import java.util.*;
import java.util.zip.*;
import java.util.List;
import java.util.regex.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.*;
import java.util.concurrent.locks.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.table.*;
import java.io.*;
import java.net.*;
import java.lang.reflect.*;
import java.lang.ref.*;
import java.lang.management.*;
import java.security.*;
import java.security.spec.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.imageio.*;
import java.math.*;
import x30_pkg.x30_util;
import static x30_pkg.x30_util.VF1;
import static x30_pkg.x30_util.l;
import static x30_pkg.x30_util.indexOf;
import static x30_pkg.x30_util.getOpt;
import static x30_pkg.x30_util.setOpt;
import static x30_pkg.x30_util.callOpt;
import static x30_pkg.x30_util.newWeakHashMap;
import static x30_pkg.x30_util.newDangerousWeakHashMap;
import static x30_pkg.x30_util.get;
import static x30_pkg.x30_util.get_raw;
import static x30_pkg.x30_util.assertTrue;
import static x30_pkg.x30_util.isHeadless;
import static x30_pkg.x30_util.isAndroid;
import static x30_pkg.x30_util.isTrue;
import x30_pkg.x30_util.DynamicObject;
import loadableUtils.utils;
import static loadableUtils.utils._threadInfo;
import static loadableUtils.utils._threadInheritInfo;
import static loadableUtils.utils._threadInfo_addMakerAndRetriever;
import static loadableUtils.utils.dm_currentModule;
import static loadableUtils.utils.dm_current_mandatory;
import static loadableUtils.utils.match;
import static loadableUtils.utils.getOpt_raw;
import static loadableUtils.utils.setOpt_raw;
import static loadableUtils.utils.getField;
import static loadableUtils.utils.fieldType;
import static loadableUtils.utils.format3;
import static loadableUtils.utils.vm_generalIdentityHashSet;
import static loadableUtils.utils.vm_generalHashMap;
import static loadableUtils.utils.vm_generalWeakSubMap;
import static loadableUtils.utils.bindToComponent;
import static loadableUtils.utils.struct;
import static loadableUtils.utils.structure;
import static loadableUtils.utils.loadPage;
import static loadableUtils.utils.loadPage_utf8;
import static loadableUtils.utils.loadPageSilentlyWithTimeout;
import static loadableUtils.utils.loadPageSilently;
import static loadableUtils.utils.loadSnippet;
import static loadableUtils.utils.loadSnippetQuietly;
import static loadableUtils.utils.sendToLocalBot;
import static loadableUtils.utils.sendToLocalBotOpt;
import static loadableUtils.utils.sendToLocalBotQuietly;
import static loadableUtils.utils.componentPopupMenu;
import static loadableUtils.utils.componentPopupMenu_top;
import static loadableUtils.utils.componentPopupMenu_initForComponent;
import static loadableUtils.utils.componentPopupMenu_getEvent;
import static loadableUtils.utils.listPopupMenu;
import static loadableUtils.utils.tablePopupMenu;
import static loadableUtils.utils.tablePopupMenuFirst;
import static loadableUtils.utils.rowSorter_setComparators;
import static loadableUtils.utils.sexyTableWithoutDrag;
import static loadableUtils.utils.dm_current_generic;
import static loadableUtils.utils.dm_current_mandatory_generic;
import static loadableUtils.utils.cset;
import static loadableUtils.utils.DynamicObject_loading;
import static loadableUtils.utils.concepts_unlisted;
import static loadableUtils.utils.makePopupMenuConditional;
import static loadableUtils.utils.makeConceptsTable_idWidth;
import static loadableUtils.utils.showConceptsTable_afterUpdate;
import static loadableUtils.utils.dynamicObjectIsLoading;
import static loadableUtils.utils.rethrow;
import static loadableUtils.utils.hasBot;
import static loadableUtils.utils.concepts_internStringsLongerThan;
import static loadableUtils.utils.concepts_setUnlistedByDefault;
import static loadableUtils.utils.realMC_tl;
import loadableUtils.utils.F0;
import loadableUtils.utils.F1;
import loadableUtils.utils.IF0;
import loadableUtils.utils.IF1;
import loadableUtils.utils.IVF1;
import loadableUtils.utils.IVF2;
import loadableUtils.utils.Matches;
import loadableUtils.utils.BetterLabel;
import loadableUtils.utils.SingleComponentPanel;
import loadableUtils.utils.Snippet;
import loadableUtils.utils.Q;
import loadableUtils.utils.ImageSurface;
import loadableUtils.utils.structure_Data;
import loadableUtils.utils.structure_ClassInfo;
import loadableUtils.utils.RGBImage;
import loadableUtils.utils.RGB;
import loadableUtils.utils.BWImage;
import loadableUtils.utils.MakesBufferedImage;
import loadableUtils.utils.MultiSet;
import loadableUtils.utils.Concept;
import loadableUtils.utils.Concepts;
import loadableUtils.utils.RC;
import loadableUtils.utils.IConceptIndex;
import loadableUtils.utils.IConceptCounter;
import loadableUtils.utils.IFieldIndex;
import loadableUtils.utils.Derefable;
import loadableUtils.utils.ImageSurfaceSelector;
import loadableUtils.utils.SimpleCRUD;
import loadableUtils.utils.PersistableThrowable;
import loadableUtils.utils.DynModule;
import loadableUtils.utils.DynPrintLog;
import loadableUtils.utils.DynObjectTable;
import loadableUtils.utils.DynImageSurface;
import loadableUtils.utils.DynCalculatedList;
import loadableUtils.utils.GlobalID;
import loadableUtils.utils.Rect;
import loadableUtils.utils.Pt;
import loadableUtils.utils.SynchronizedArrayList;
import loadableUtils.utils.SecretValue;
import loadableUtils.utils.HCRUD;
import loadableUtils.utils.HCRUD_Data;
import loadableUtils.utils.HCRUD_Concepts;
import loadableUtils.utils.ValueConverterForField;
import loadableUtils.utils.DefaultValueConverterForField;
import loadableUtils.utils.OrError;
import loadableUtils.utils.HTML;
import java.text.*;
import javax.swing.border.*;
import javax.swing.undo.UndoManager;
import java.util.TimeZone;
import java.awt.datatransfer.StringSelection;
import java.nio.charset.Charset;
import java.text.NumberFormat;

class main {

  static public class PrivateChat extends DynPrintLog {

    public String receiver, msg;

    public boolean sign, verifyBeforeSend;

    transient public StefansOS_ConnectToServer connector;

    public String switchableFields() {
      return "verifyBeforeSend";
    }

    public JComponent visualize() {
      return centerAndSouthWithMargins(super.visualize(), westCenterAndEastWithMargin(jLine(jLabel("Send to"), jMinWidth(100, jLiveValueTextField_bothWays(dm_fieldLiveValue("receiver"))), jLabel(":")), onEnterAndCtrlEnter(jLiveValueTextField_bothWays(dm_fieldLiveValue("msg")), runnableThread(new Runnable() {

        public void run() {
          try {
            sendMsg();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "sendMsg();";
        }
      })), jLine(jLiveValueCheckBox("Sign", dm_fieldLiveValue("sign")), jbutton("Send", runnableThread(new Runnable() {

        public void run() {
          try {
            sendMsg();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "sendMsg();";
        }
      })))));
    }

    public void sendMsg() {
      postMsg(receiver, msg, sign);
      setField("msg", "");
    }

    public void postSigned(String receiver, String msg) {
      postMsg(receiver, msg, true);
    }

    public void postMsg(String receiver, String msg, boolean sign) {
      if (empty(receiver = trim(receiver)))
        return;
      if (!possibleComputerID(receiver)) {
        infoBox("Not a computer ID: " + receiver);
        return;
      }
      if (empty(msg = trim(msg)))
        return;
      print("Sending to " + receiver + ": " + shorten(msg, 200));
      if (sign) {
        signWithComputerIDAndDate_verify = verifyBeforeSend;
        msg = signWithComputerIDAndDate(msg);
        print("Signed msg length: " + l(msg));
      }
      vmBus_send("sendingToPrivateChat", receiver, msg);
      connector.sendLine("privateChat:" + receiver + " " + quote(msg));
    }

    public void start() {
      try {
        super.start();
        {
          startThread(new Runnable() {

            public void run() {
              try {
                exportComputerPublicKeyToServerMechList();
              } catch (Exception __e) {
                throw rethrow(__e);
              }
            }

            public String toString() {
              return "exportComputerPublicKeyToServerMechList();";
            }
          });
        }
        ownResource(connector = new StefansOS_ConnectToServer());
        connector.onLine = new VF1<String>() {

          public void get(String line) {
            try {
              Matches m = new Matches();
              if (startsWith(line, "privately from ", m)) {
                String s = m.rest();
                int i = indexOf(s, ':');
                String sender = takeFirst(s, i);
                String msg = unquote(substring(s, i + 2));
                printWithIndent(sender + " >> ", shorten(msg, 1000));
                vmBus_send("gotFromPrivateChat", sender, msg);
              }
            } catch (Exception __e) {
              throw rethrow(__e);
            }
          }

          public String toString() {
            return "new Matches m;\r\n      if (startsWith(line, \"privately from \", m)) {\r\n        ...";
          }
        };
        connector.startWithSubs("privateChat");
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }
  }

  static public boolean _moduleClass_PrivateChat = true;

  static public String programID;

  static public void _onLoad_initUtils() {
    utils.__javax = javax();
  }

  static public void _onLoad_defaultClassFinder() {
    setDefaultClassFinder(new F1<String, Class>() {

      public Class get(String name) {
        Class c = findClass_fullName(name);
        if (c != null)
          return c;
        if (name.startsWith("main$"))
          return loadableUtils.utils.findClass_fullName("loadableUtils.utils" + name.substring(4));
        return null;
      }
    });
  }

  static public ThreadLocal<Boolean> dynamicObjectIsLoading_threadLocal() {
    return DynamicObject_loading;
  }

  static volatile public Concepts mainConcepts;

  static public Concepts db_mainConcepts() {
    if (mainConcepts == null)
      mainConcepts = newConceptsWithClassFinder(getDBProgramID());
    return mainConcepts;
  }

  static public void cleanMeUp_concepts() {
    if (db_mainConcepts() != null)
      db_mainConcepts().cleanMeUp();
  }

  static public JPanel centerAndSouthWithMargins(Component c, Component s) {
    return applyDefaultMargin(centerAndSouth(c, withTopMargin(s)));
  }

  static public JPanel centerAndSouthWithMargins(int margin, Component c, Component s) {
    return applyMargin(margin, centerAndSouth(c, withTopMargin(margin, s)));
  }

  static public JPanel westCenterAndEastWithMargin(Component w, Component c, Component e) {
    return westCenterAndEast(w, withLeftAndRightMargin(c), e);
  }

  static public JPanel jLine(Component... components) {
    return jline(components);
  }

  static public <A extends Component> JPanel jLine(List<A> components) {
    return jline(components);
  }

  static public JLabel jLabel(String text) {
    return jlabel(text);
  }

  static public JLabel jLabel() {
    return jlabel();
  }

  static public <A extends Component> A jMinWidth(final int w, final A c) {
    if (c == null)
      return null;
    return swing(new F0<A>() {

      public A get() {
        try {
          Dimension size = c.getMinimumSize();
          c.setMinimumSize(new Dimension(w, size.height));
          return jPreferWidth(w, c);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "Dimension size = c.getMinimumSize();\r\n    c.setMinimumSize(new Dimension(/*ma...";
      }
    });
  }

  static public JTextField jLiveValueTextField_bothWays(final SimpleLiveValue<String> lv) {
    final JTextField ta = jTextField();
    bindTextComponentToLiveValue_bothWays(ta, lv);
    return ta;
  }

  static public SimpleLiveValue dm_fieldLiveValue(String fieldName) {
    return dm_fieldLiveValue(dm_current_mandatory(), fieldName);
  }

  static public SimpleLiveValue dm_fieldLiveValue(final DynModule module, final String fieldName) {
    Lock __0 = module.lock;
    lock(__0);
    try {
      AutoCloseable __2 = module.enter();
      try {
        Class type = getFieldType(module, fieldName);
        final SimpleLiveValue value = new SimpleLiveValue(type, get(module, fieldName));
        dm_watchField(fieldName, new Runnable() {

          public void run() {
            try {
              Object o = get(module, fieldName);
              value.set(o);
              ;
            } catch (Exception __e) {
              throw rethrow(__e);
            }
          }

          public String toString() {
            return "ifdef dm_fieldLiveValue_debug\r\n      print(\"dm_fieldLiveValue: setting \" + fi...";
          }
        });
        value.onChange(new Runnable() {

          public void run() {
            try {
              module.setField(fieldName, value.get());
              ;
            } catch (Exception __e) {
              throw rethrow(__e);
            }
          }

          public String toString() {
            return "ifdef dm_fieldLiveValue_debug\r\n      print(\"dm_fieldLiveValue: setting 2 \" + ...";
          }
        });
        return value;
      } finally {
        _close(__2);
      }
    } finally {
      unlock(__0);
    }
  }

  static public JTextField onEnterAndCtrlEnter(final JTextField tf, final Object action) {
    onEnter(tf, action);
    onCtrlEnter(tf, action);
    return tf;
  }

  static public Runnable runnableThread(final Runnable r) {
    return new Runnable() {

      public void run() {
        try {
          startThread(r);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "startThread(r)";
      }
    };
  }

  static public JCheckBox jLiveValueCheckBox(String text, final SimpleLiveValue<Boolean> lv) {
    final JCheckBox cb = jCheckBox(text);
    bindCheckBoxToLiveValue(cb, lv);
    return cb;
  }

  static public JButton jbutton(String text, Object action) {
    return newButton(text, action);
  }

  static public JButton jbutton(String text) {
    return newButton(text, null);
  }

  static public JButton jbutton(Action action) {
    return swingNu(JButton.class, action);
  }

  static public boolean empty(Collection c) {
    return c == null || c.isEmpty();
  }

  static public boolean empty(Iterable c) {
    return c == null || !c.iterator().hasNext();
  }

  static public boolean empty(CharSequence s) {
    return s == null || s.length() == 0;
  }

  static public boolean empty(Map map) {
    return map == null || map.isEmpty();
  }

  static public boolean empty(Object[] o) {
    return o == null || o.length == 0;
  }

  static public boolean empty(Object o) {
    if (o instanceof Collection)
      return empty((Collection) o);
    if (o instanceof String)
      return empty((String) o);
    if (o instanceof Map)
      return empty((Map) o);
    if (o instanceof Object[])
      return empty((Object[]) o);
    if (o instanceof byte[])
      return empty((byte[]) o);
    if (o == null)
      return true;
    throw fail("unknown type for 'empty': " + getType(o));
  }

  static public boolean empty(Iterator i) {
    return i == null || !i.hasNext();
  }

  static public boolean empty(double[] a) {
    return a == null || a.length == 0;
  }

  static public boolean empty(float[] a) {
    return a == null || a.length == 0;
  }

  static public boolean empty(int[] a) {
    return a == null || a.length == 0;
  }

  static public boolean empty(long[] a) {
    return a == null || a.length == 0;
  }

  static public boolean empty(byte[] a) {
    return a == null || a.length == 0;
  }

  static public boolean empty(short[] a) {
    return a == null || a.length == 0;
  }

  static public boolean empty(MultiSet ms) {
    return ms == null || ms.isEmpty();
  }

  static public boolean empty(File f) {
    return getFileSize(f) == 0;
  }

  static public String trim(String s) {
    return s == null ? null : s.trim();
  }

  static public String trim(StringBuilder buf) {
    return buf.toString().trim();
  }

  static public String trim(StringBuffer buf) {
    return buf.toString().trim();
  }

  static public boolean possibleComputerID(String s) {
    return l(s) == 12 && allLowerCaseCharacters(s);
  }

  static public JWindow infoBox(String text) {
    return infoMessage(text);
  }

  static public JWindow infoBox(String text, double seconds) {
    return infoMessage(text, seconds);
  }

  static public JWindow infoBox(Throwable e) {
    return infoMessage(e);
  }

  static volatile public StringBuffer local_log = new StringBuffer();

  static volatile public Appendable print_log = local_log;

  static volatile public int print_log_max = 1024 * 1024;

  static volatile public int local_log_max = 100 * 1024;

  static public boolean print_silent = false;

  static public Object print_byThread_lock = new Object();

  static volatile public ThreadLocal<Object> print_byThread;

  static volatile public Object print_allThreads;

  static volatile public Object print_preprocess;

  static public void print() {
    print("");
  }

  static public <A> A print(String s, A o) {
    print(combinePrintParameters(s, o));
    return o;
  }

  static public <A> A print(A o) {
    ping_okInCleanUp();
    if (print_silent)
      return o;
    String s = o + "\n";
    print_noNewLine(s);
    return o;
  }

  static public void print_noNewLine(String s) {
    try {
      Object f = getThreadLocal(print_byThread_dontCreate());
      if (f == null)
        f = print_allThreads;
      if (f != null)
        if (isFalse(f instanceof F1 ? ((F1) f).get(s) : callF(f, s)))
          return;
    } catch (Throwable e) {
      System.out.println(getStackTrace(e));
    }
    print_raw(s);
  }

  static public void print_raw(String s) {
    if (print_preprocess != null)
      s = (String) callF(print_preprocess, s);
    s = fixNewLines(s);
    Appendable loc = local_log;
    Appendable buf = print_log;
    int loc_max = print_log_max;
    if (buf != loc && buf != null) {
      print_append(buf, s, print_log_max);
      loc_max = local_log_max;
    }
    if (loc != null)
      print_append(loc, s, loc_max);
    System.out.print(s);
    vmBus_send("printed", mc(), s);
  }

  static public void print_autoRotate() {
  }

  static public int shorten_default = 100;

  static public String shorten(CharSequence s) {
    return shorten(s, shorten_default);
  }

  static public String shorten(CharSequence s, int max) {
    return shorten(s, max, "...");
  }

  static public String shorten(CharSequence s, int max, String shortener) {
    if (s == null)
      return "";
    if (max < 0)
      return str(s);
    return s.length() <= max ? str(s) : subCharSequence(s, 0, min(s.length(), max - l(shortener))) + shortener;
  }

  static public String shorten(int max, CharSequence s) {
    return shorten(s, max);
  }

  static public boolean signWithComputerIDAndDate_verbose = false;

  static public boolean signWithComputerIDAndDate_verify = false;

  static public String signWithComputerIDAndDate(String s, Object... __) {
    boolean verbose = optPar("verbose", __, signWithComputerIDAndDate_verbose);
    String computerID = getComputerID();
    s = rtrim(s) + "\n\n" + "-" + computerID() + ", " + localDateWithMilliseconds() + " (" + localTimeZone().getDisplayName(false, TimeZone.SHORT) + ")";
    s = fromLines(toLines(s));
    if (verbose)
      print("Signing text: " + shorten(quote(s)));
    String signed = s + "sig: " + getMySignatureForText(s);
    signed = fromLines(toLines(signed));
    if (optPar("verify", __, signWithComputerIDAndDate_verify))
      assertEqualsOptionalVerbose(verbose, "My own signature", computerID(), getAuthorOfSignedText(signed));
    return signed;
  }

  static public void vmBus_send(String msg, Object... args) {
    Object arg = vmBus_wrapArgs(args);
    pcallFAll_minimalExceptionHandling(vm_busListeners_live(), msg, arg);
    pcallFAll_minimalExceptionHandling(vm_busListenersByMessage_live().get(msg), msg, arg);
  }

  static public void vmBus_send(String msg) {
    vmBus_send(msg, (Object) null);
  }

  static public String quote(Object o) {
    if (o == null)
      return "null";
    return quote(str(o));
  }

  static public String quote(String s) {
    if (s == null)
      return "null";
    StringBuilder out = new StringBuilder((int) (l(s) * 1.5 + 2));
    quote_impl(s, out);
    return out.toString();
  }

  static public void quote_impl(String s, StringBuilder out) {
    out.append('"');
    int l = s.length();
    for (int i = 0; i < l; i++) {
      char c = s.charAt(i);
      if (c == '\\' || c == '"')
        out.append('\\').append(c);
      else if (c == '\r')
        out.append("\\r");
      else if (c == '\n')
        out.append("\\n");
      else if (c == '\t')
        out.append("\\t");
      else if (c == '\0')
        out.append("\\0");
      else
        out.append(c);
    }
    out.append('"');
  }

  static public Thread startThread(Object runnable) {
    return startThread(defaultThreadName(), runnable);
  }

  static public Thread startThread(String name, Object runnable) {
    runnable = wrapAsActivity(runnable);
    return startThread(newThread(toRunnable(runnable), name));
  }

  static public Thread startThread(Thread t) {
    _registerThread(t);
    t.start();
    return t;
  }

  static public void exportComputerPublicKeyToServerMechList() {
    addToMechMap("Computer Public Keys", lithashmap(computerID(), getMyPublicKey()));
  }

  static public void ownResource(AutoCloseable c) {
    _registerAutoCloseable(c);
  }

  static public boolean startsWith(String a, String b) {
    return a != null && a.startsWith(unnull(b));
  }

  static public boolean startsWith(String a, char c) {
    return nemptyString(a) && a.charAt(0) == c;
  }

  static public boolean startsWith(String a, String b, Matches m) {
    if (!startsWith(a, b))
      return false;
    m.m = new String[] { substring(a, strL(b)) };
    return true;
  }

  static public boolean startsWith(List a, List b) {
    if (a == null || listL(b) > listL(a))
      return false;
    for (int i = 0; i < listL(b); i++) if (neq(a.get(i), b.get(i)))
      return false;
    return true;
  }

  static public <A> List<A> takeFirst(List<A> l, int n) {
    return l(l) <= n ? l : newSubListOrSame(l, 0, n);
  }

  static public <A> List<A> takeFirst(int n, List<A> l) {
    return takeFirst(l, n);
  }

  static public String takeFirst(int n, String s) {
    return substring(s, 0, n);
  }

  static public String takeFirst(String s, int n) {
    return substring(s, 0, n);
  }

  static public CharSequence takeFirst(int n, CharSequence s) {
    return subCharSequence(s, 0, n);
  }

  static public <A> List<A> takeFirst(int n, Iterator<A> it) {
    if (it == null)
      return null;
    List l = new ArrayList();
    for (int _repeat_0 = 0; _repeat_0 < n; _repeat_0++) {
      if (it.hasNext())
        l.add(it.next());
      else
        break;
    }
    return l;
  }

  static public <A> List<A> takeFirst(int n, Iterable<A> i) {
    if (i == null)
      return null;
    return i == null ? null : takeFirst(n, i.iterator());
  }

  static public int[] takeFirst(int n, int[] a) {
    return takeFirstOfIntArray(n, a);
  }

  static public String unquote(String s) {
    if (s == null)
      return null;
    if (startsWith(s, '[')) {
      int i = 1;
      while (i < s.length() && s.charAt(i) == '=') ++i;
      if (i < s.length() && s.charAt(i) == '[') {
        String m = s.substring(1, i);
        if (s.endsWith("]" + m + "]"))
          return s.substring(i + 1, s.length() - i - 1);
      }
    }
    if (s.length() > 1) {
      char c = s.charAt(0);
      if (c == '\"' || c == '\'') {
        int l = endsWith(s, c) ? s.length() - 1 : s.length();
        StringBuilder sb = new StringBuilder(l - 1);
        for (int i = 1; i < l; i++) {
          char ch = s.charAt(i);
          if (ch == '\\') {
            char nextChar = (i == l - 1) ? '\\' : s.charAt(i + 1);
            if (nextChar >= '0' && nextChar <= '7') {
              String code = "" + nextChar;
              i++;
              if ((i < l - 1) && s.charAt(i + 1) >= '0' && s.charAt(i + 1) <= '7') {
                code += s.charAt(i + 1);
                i++;
                if ((i < l - 1) && s.charAt(i + 1) >= '0' && s.charAt(i + 1) <= '7') {
                  code += s.charAt(i + 1);
                  i++;
                }
              }
              sb.append((char) Integer.parseInt(code, 8));
              continue;
            }
            switch(nextChar) {
              case '\"':
                ch = '\"';
                break;
              case '\\':
                ch = '\\';
                break;
              case 'b':
                ch = '\b';
                break;
              case 'f':
                ch = '\f';
                break;
              case 'n':
                ch = '\n';
                break;
              case 'r':
                ch = '\r';
                break;
              case 't':
                ch = '\t';
                break;
              case '\'':
                ch = '\'';
                break;
              case 'u':
                if (i >= l - 5) {
                  ch = 'u';
                  break;
                }
                int code = Integer.parseInt("" + s.charAt(i + 2) + s.charAt(i + 3) + s.charAt(i + 4) + s.charAt(i + 5), 16);
                sb.append(Character.toChars(code));
                i += 5;
                continue;
              default:
                ch = nextChar;
            }
            i++;
          }
          sb.append(ch);
        }
        return sb.toString();
      }
    }
    return s;
  }

  static public String substring(String s, int x) {
    return substring(s, x, strL(s));
  }

  static public String substring(String s, int x, int y) {
    if (s == null)
      return null;
    if (x < 0)
      x = 0;
    int n = s.length();
    if (y < x)
      y = x;
    if (y > n)
      y = n;
    if (x >= y)
      return "";
    return s.substring(x, y);
  }

  static public String substring(String s, CharSequence l) {
    return substring(s, lCharSequence(l));
  }

  static public <A> A printWithIndent(A o) {
    return printIndent(o);
  }

  static public <A> A printWithIndent(String indent, A o) {
    return printIndent(indent, o);
  }

  static public void printWithIndent(int indent, Object o) {
    printIndent(indent, o);
  }

  static public Class javax() {
    return getJavaX();
  }

  static public void setDefaultClassFinder(Object cf) {
    _defaultClassFinder_value = cf;
  }

  static public HashMap<String, Class> findClass_fullName_cache = new HashMap();

  static public Class findClass_fullName(String name) {
    synchronized (findClass_fullName_cache) {
      if (findClass_fullName_cache.containsKey(name))
        return findClass_fullName_cache.get(name);
      Class c;
      try {
        c = Class.forName(name);
      } catch (ClassNotFoundException e) {
        c = null;
      }
      findClass_fullName_cache.put(name, c);
      return c;
    }
  }

  static public AutoCloseable tempInterceptPrintIfNotIntercepted(F1<String, Boolean> f) {
    return print_byThread().get() == null ? tempInterceptPrint(f) : null;
  }

  static public Object _defaultClassFinder_value = defaultDefaultClassFinder();

  static public Object _defaultClassFinder() {
    return _defaultClassFinder_value;
  }

  static public Concepts newConceptsWithClassFinder(String progID) {
    Concepts cc = new Concepts(progID);
    cc.classFinder = _defaultClassFinder();
    return cc;
  }

  static public String getDBProgramID_id;

  static public String getDBProgramID() {
    return nempty(getDBProgramID_id) ? getDBProgramID_id : programIDWithCase();
  }

  static public <A extends JComponent> A applyDefaultMargin(final A c) {
    if (c != null) {
      swing(new Runnable() {

        public void run() {
          try {
            c.setBorder(BorderFactory.createEmptyBorder(withMargin_defaultWidth, withMargin_defaultWidth, withMargin_defaultWidth, withMargin_defaultWidth));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "c.setBorder(BorderFactory.createEmptyBorder(withMargin_defaultWidth, withMarg...";
        }
      });
    }
    return c;
  }

  static public JPanel centerAndSouth(final Component c, final Component s) {
    return swing(new F0<JPanel>() {

      public JPanel get() {
        try {
          JPanel panel = new JPanel(new BorderLayout());
          panel.add(BorderLayout.CENTER, wrap(c));
          if (s != null)
            panel.add(BorderLayout.SOUTH, wrap(s));
          return panel;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "JPanel panel = new JPanel(new BorderLayout);\r\n    panel.add(BorderLayout.CENT...";
      }
    });
  }

  static public int withTopMargin_defaultWidth = 6;

  static public JPanel withTopMargin(Component c) {
    return withTopMargin(withTopMargin_defaultWidth, c);
  }

  static public JPanel withTopMargin(final int w, final Component c) {
    return swing(new F0<JPanel>() {

      public JPanel get() {
        try {
          JPanel p = new JPanel(new BorderLayout());
          p.setBorder(BorderFactory.createEmptyBorder(w, 0, 0, 0));
          p.add(c);
          return p;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "JPanel p = new JPanel(new BorderLayout);\r\n    p.setBorder(BorderFactory.creat...";
      }
    });
  }

  static public <A extends JComponent> A applyMargin(int top, int left, int bottom, int right, A c) {
    return addMargin(top, left, bottom, right, c);
  }

  static public <A extends JComponent> A applyMargin(int w, A c) {
    return addMargin(w, c);
  }

  static public JPanel westCenterAndEast(Component w, Component c, Component e) {
    JPanel panel = new JPanel(new BorderLayout());
    panel.add(BorderLayout.WEST, wrap(w));
    panel.add(BorderLayout.CENTER, wrap(c));
    panel.add(BorderLayout.EAST, wrap(e));
    return panel;
  }

  static public int withLeftAndRightMargin_defaultWidth = 6;

  static public JPanel withLeftAndRightMargin(Component c) {
    return withLeftAndRightMargin(withLeftAndRightMargin_defaultWidth, c);
  }

  static public JPanel withLeftAndRightMargin(int w, Component c) {
    return withLeftAndRightMargin(w, w, c);
  }

  static public JPanel withLeftAndRightMargin(final int w1, final int w2, final Component c) {
    return swing(new F0<JPanel>() {

      public JPanel get() {
        try {
          JPanel p = new JPanel(new BorderLayout());
          p.setBorder(BorderFactory.createEmptyBorder(0, w1, 0, w2));
          p.add(c);
          return p;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "JPanel p = new JPanel(new BorderLayout);\r\n    p.setBorder(BorderFactory.creat...";
      }
    });
  }

  static public JPanel jline(final Component... components) {
    return swing(new F0<JPanel>() {

      public JPanel get() {
        try {
          return new LeftAlignedLine(components);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret new LeftAlignedLine(components);";
      }
    });
  }

  static public <A extends Component> JPanel jline(List<A> components) {
    return jline(asArray(Component.class, components));
  }

  static public JLabel jlabel(final String text) {
    return swingConstruct(BetterLabel.class, text);
  }

  static public JLabel jlabel() {
    return jlabel(" ");
  }

  static public Object swing(Object f) {
    return swingAndWait(f);
  }

  static public <A> A swing(F0<A> f) {
    return (A) swingAndWait(f);
  }

  static public <A> A swing(IF0<A> f) {
    return (A) swingAndWait(f);
  }

  static public <A extends Component> A jPreferWidth(int w, A c) {
    Dimension size = c.getPreferredSize();
    c.setPreferredSize(new Dimension(w, size.height));
    return c;
  }

  static public JTextField jTextField() {
    return jTextField("");
  }

  static public JTextField jTextField(final String text) {
    return swing(new F0<JTextField>() {

      public JTextField get() {
        try {
          JTextField tf = new JTextField(unnull(text));
          standardTextFieldPopupMenu(tf);
          jenableUndoRedo(tf);
          tf.selectAll();
          return tf;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "JTextField tf = new JTextField(unnull(text));\r\n    standardTextFieldPopupMenu...";
      }
    });
  }

  static public JTextField jTextField(Object o) {
    return jTextField(strOrEmpty(o));
  }

  static public <A extends JTextComponent> A bindTextComponentToLiveValue_bothWays(final A tc, final SimpleLiveValue<String> lv) {
    bindLiveValueListenerToComponent(tc, lv, new Runnable() {

      public void run() {
        try {
          setTextKeepCaret(tc, lv.get());
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "setTextKeepCaret(tc, lv.get())";
      }
    });
    onChange(tc, new Runnable() {

      public void run() {
        try {
          lv.set(getText(tc));
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "lv.set(getText(tc))";
      }
    });
    return tc;
  }

  static public void lock(Lock lock) {
    try {
      ping();
      if (lock == null)
        return;
      try {
        vmBus_send("locking", lock, "thread", currentThread());
        lock.lockInterruptibly();
        vmBus_send("locked", lock, "thread", currentThread());
      } catch (InterruptedException e) {
        Object reason = vm_threadInterruptionReasonsMap().get(currentThread());
        print("Locking interrupted! Reason: " + strOr(reason, "Unknown"));
        printStackTrace(e);
        rethrow(e);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void lock(Lock lock, String msg) {
    print("Locking: " + msg);
    lock(lock);
  }

  static public void lock(Lock lock, String msg, long timeout) {
    print("Locking: " + msg);
    lockOrFail(lock, timeout);
  }

  static public ReentrantLock lock() {
    return fairLock();
  }

  static public Class getFieldType(Object o, String field) {
    return fieldType(o, field);
  }

  static public void dm_watchField(String field, Runnable onChange) {
    new Dyn_FieldWatcher(dm_current_mandatory(), field, onChange);
  }

  static public void _close(AutoCloseable c) {
    if (c != null)
      try {
        c.close();
      } catch (Throwable e) {
        if (c instanceof javax.imageio.stream.ImageOutputStream)
          return;
        else
          throw rethrow(e);
      }
  }

  static public void unlock(Lock lock, String msg) {
    if (lock == null)
      return;
    lock.unlock();
    vmBus_send("unlocked", lock, "thread", currentThread());
    print("Unlocked: " + msg);
  }

  static public void unlock(Lock lock) {
    if (lock == null)
      return;
    lock.unlock();
    vmBus_send("unlocked", lock, "thread", currentThread());
  }

  static public JTextField onEnter(final JTextField tf, final Object action) {
    if (action == null || tf == null)
      return tf;
    tf.addActionListener(new java.awt.event.ActionListener() {

      public void actionPerformed(java.awt.event.ActionEvent _evt) {
        try {
          tf.selectAll();
          callF(action);
        } catch (Throwable __e) {
          messageBox(__e);
        }
      }
    });
    return tf;
  }

  static public JButton onEnter(JButton btn, final Object action) {
    if (action == null || btn == null)
      return btn;
    btn.addActionListener(actionListener(action));
    return btn;
  }

  static public JList onEnter(JList list, Object action) {
    list.addKeyListener(enterKeyListener(rCallOnSelectedListItem(list, action)));
    return list;
  }

  static public JComboBox onEnter(final JComboBox cb, final Object action) {
    {
      swing(new Runnable() {

        public void run() {
          try {
            if (cb.isEditable()) {
              JTextField text = (JTextField) cb.getEditor().getEditorComponent();
              onEnter(text, action);
            } else {
              cb.getInputMap().put(KeyStroke.getKeyStroke("ENTER"), "enter");
              cb.getActionMap().put("enter", abstractAction("", new Runnable() {

                public void run() {
                  try {
                    cb.hidePopup();
                    callF(action);
                  } catch (Exception __e) {
                    throw rethrow(__e);
                  }
                }

                public String toString() {
                  return "cb.hidePopup(); callF(action);";
                }
              }));
            }
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "if (cb.isEditable()) {\r\n      JTextField text = (JTextField) cb.getEditor().g...";
        }
      });
    }
    return cb;
  }

  static public JTable onEnter(final JTable table, final Object action) {
    table.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0), "Enter");
    table.getActionMap().put("Enter", new AbstractAction() {

      public void actionPerformed(ActionEvent e) {
        callF(action, table.getSelectedRow());
      }
    });
    return table;
  }

  static public JTextField onEnter(Object action, JTextField tf) {
    return onEnter(tf, action);
  }

  static public <A extends JComponent> A onCtrlEnter(final A c, final Object action) {
    addKeyListener(c, ctrlEnterKeyListener(action));
    return c;
  }

  static public JCheckBox jCheckBox() {
    return swingNu(JCheckBox.class);
  }

  static public JCheckBox jCheckBox(boolean checked) {
    return swingNu(JCheckBox.class, "", checked);
  }

  static public JCheckBox jCheckBox(String text, boolean checked) {
    return swingNu(JCheckBox.class, text, checked);
  }

  static public JCheckBox jCheckBox(String text) {
    return swingNu(JCheckBox.class, text);
  }

  static public JCheckBox jCheckBox(String text, boolean checked, final Object onChange) {
    JCheckBox cb = jCheckBox(checked, onChange);
    cb.setText(text);
    return cb;
  }

  static public JCheckBox jCheckBox(boolean checked, final Object onChange) {
    final JCheckBox cb = jCheckBox(checked);
    cb.addChangeListener(new ChangeListener() {

      public void stateChanged(ChangeEvent e) {
        pcallF(onChange, cb.isSelected());
      }
    });
    return cb;
  }

  static public <A extends JCheckBox> A bindCheckBoxToLiveValue(final A cb, final SimpleLiveValue<Boolean> lv) {
    bindLiveValueListenerToComponent(cb, lv, new Runnable() {

      public void run() {
        try {
          setChecked(cb, isTrue(lv.get()));
          ;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ifdef bindCheckBoxToLiveValue_debug\r\n      print(\"bindCheckBoxToLiveValue: se...";
      }
    });
    onChange(cb, new Runnable() {

      public void run() {
        try {
          lv.set(isChecked(cb));
          ;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ifdef bindCheckBoxToLiveValue_debug\r\n      print(\"bindCheckBoxToLiveValue: se...";
      }
    });
    return cb;
  }

  static public boolean newButton_autoToolTip = true;

  static public JButton newButton(final String text, final Object action) {
    return swing(new F0<JButton>() {

      public JButton get() {
        try {
          String text2 = dropPrefix("[disabled] ", text);
          final JButton btn = new JButton(text2);
          if (l(text2) < l(text))
            btn.setEnabled(false);
          if (newButton_autoToolTip) {
            btn.setToolTipText(btn.getText());
          }
          if (action != null)
            btn.addActionListener(actionListener(action, btn));
          return btn;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "S text2 = dropPrefix(\"[disabled] \", text);\r\n    final JButton btn = new JButt...";
      }
    });
  }

  static public <A> A swingNu(final Class<A> c, final Object... args) {
    return swingConstruct(c, args);
  }

  static public RuntimeException fail() {
    throw new RuntimeException("fail");
  }

  static public RuntimeException fail(Throwable e) {
    throw asRuntimeException(e);
  }

  static public RuntimeException fail(Object msg) {
    throw new RuntimeException(String.valueOf(msg));
  }

  static public RuntimeException fail(Object... objects) {
    throw new Fail(objects);
  }

  static public RuntimeException fail(String msg) {
    throw new RuntimeException(msg == null ? "" : msg);
  }

  static public RuntimeException fail(String msg, Throwable innerException) {
    throw new RuntimeException(msg, innerException);
  }

  static public String getType(Object o) {
    return getClassName(o);
  }

  static public long getFileSize(String path) {
    return path == null ? 0 : new File(path).length();
  }

  static public long getFileSize(File f) {
    return f == null ? 0 : f.length();
  }

  static public boolean allLowerCaseCharacters(String s) {
    for (int i = 0; i < l(s); i++) if (Character.getType(s.charAt(i)) != Character.LOWERCASE_LETTER)
      return false;
    return true;
  }

  static public boolean infoMessage_alwaysOnTop = true;

  static public double infoMessage_defaultTime = 5.0;

  static public JWindow infoMessage(String text) {
    return infoMessage(text, infoMessage_defaultTime);
  }

  static public JWindow infoMessage(final String text, final double seconds) {
    printHidingCredentials(text);
    return infoMessage_noprint(text, seconds);
  }

  static public JWindow infoMessage_noprint(String text) {
    return infoMessage_noprint(text, infoMessage_defaultTime);
  }

  static public JWindow infoMessage_noprint(final String _text, final double seconds) {
    final String text = hideCredentials(_text);
    if (empty(text))
      return null;
    logQuotedWithDate(infoBoxesLogFile(), text);
    if (isHeadless())
      return null;
    return (JWindow) swingAndWait(new F0<Object>() {

      public Object get() {
        try {
          final JWindow window = showWindow(infoMessage_makePanel(text));
          window.setSize(300, 150);
          moveToTopRightCorner(window);
          if (infoMessage_alwaysOnTop)
            window.setAlwaysOnTop(true);
          if (vmBus_noObjections("shouldShowInfoBox", window, text))
            window.setVisible(true);
          if (seconds != 0)
            disposeWindowAfter(iround(seconds * 1000), window);
          return window;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "final JWindow window = showWindow(infoMessage_makePanel(text));\r\n    window.s...";
      }
    });
  }

  static public JWindow infoMessage(Throwable e) {
    printStackTrace(e);
    return infoMessage(exceptionToStringShort(e));
  }

  static public String combinePrintParameters(String s, Object o) {
    return (endsWithLetterOrDigit(s) ? s + ": " : s) + o;
  }

  static public void ping_okInCleanUp() {
    if (ping_pauseAll || ping_anyActions)
      ping_impl(true);
  }

  static public Object getThreadLocal(Object o, String name) {
    ThreadLocal t = (ThreadLocal) (getOpt(o, name));
    return t != null ? t.get() : null;
  }

  static public <A> A getThreadLocal(ThreadLocal<A> tl) {
    return tl == null ? null : tl.get();
  }

  static public <A> A getThreadLocal(ThreadLocal<A> tl, A defaultValue) {
    return or(getThreadLocal(tl), defaultValue);
  }

  static public ThreadLocal<Object> print_byThread_dontCreate() {
    return print_byThread;
  }

  static public boolean isFalse(Object o) {
    return eq(false, o);
  }

  static public Object callF(Object f, Object... args) {
    try {
      if (f instanceof String)
        return callMC((String) f, args);
      return x30_util.callF(f, args);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public <A> A callF(F0<A> f) {
    return f == null ? null : f.get();
  }

  static public <A> A callF(IF0<A> f) {
    return f == null ? null : f.get();
  }

  static public <A, B> B callF(F1<A, B> f, A a) {
    return f == null ? null : f.get(a);
  }

  static public <A, B> B callF(IF1<A, B> f, A a) {
    return f == null ? null : f.get(a);
  }

  static public <A, B, C> C callF(F2<A, B, C> f, A a, B b) {
    return f == null ? null : f.get(a, b);
  }

  static public <A> void callF(VF1<A> f, A a) {
    if (f != null)
      f.get(a);
  }

  static public Object callMC(String method, Object... args) {
    return call(mc(), method, args);
  }

  static public Object call(Object o) {
    return callF(o);
  }

  static public Object call(Object o, String method, Object... args) {
    return call_withVarargs(o, method, args);
  }

  static public String getStackTrace(Throwable throwable) {
    lastException(throwable);
    return getStackTrace_noRecord(throwable);
  }

  static public String getStackTrace_noRecord(Throwable throwable) {
    StringWriter writer = new StringWriter();
    throwable.printStackTrace(new PrintWriter(writer));
    return hideCredentials(writer.toString());
  }

  static public String getStackTrace() {
    return getStackTrace_noRecord(new Throwable());
  }

  static public String fixNewLines(String s) {
    int i = indexOf(s, '\r');
    if (i < 0)
      return s;
    int l = s.length();
    StringBuilder out = new StringBuilder(l);
    out.append(s, 0, i);
    for (; i < l; i++) {
      char c = s.charAt(i);
      if (c != '\r')
        out.append(c);
      else {
        out.append('\n');
        if (i + 1 < l && s.charAt(i + 1) == '\n')
          ++i;
      }
    }
    return out.toString();
  }

  static public void print_append(Appendable buf, String s, int max) {
    try {
      synchronized (buf) {
        buf.append(s);
        if (buf instanceof StringBuffer)
          rotateStringBuffer(((StringBuffer) buf), max);
        else if (buf instanceof StringBuilder)
          rotateStringBuilder(((StringBuilder) buf), max);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Class mc() {
    return main.class;
  }

  static public String str(Object o) {
    return o == null ? "null" : o.toString();
  }

  static public String str(char[] c) {
    return new String(c);
  }

  static public CharSequence subCharSequence(CharSequence s, int x) {
    return subCharSequence(s, x, s == null ? 0 : s.length());
  }

  static public CharSequence subCharSequence(CharSequence s, int x, int y) {
    if (s == null)
      return null;
    if (x < 0)
      x = 0;
    if (x >= s.length())
      return "";
    if (y < x)
      y = x;
    if (y > s.length())
      y = s.length();
    return s.subSequence(x, y);
  }

  static public int min(int a, int b) {
    return Math.min(a, b);
  }

  static public long min(long a, long b) {
    return Math.min(a, b);
  }

  static public float min(float a, float b) {
    return Math.min(a, b);
  }

  static public float min(float a, float b, float c) {
    return min(min(a, b), c);
  }

  static public double min(double a, double b) {
    return Math.min(a, b);
  }

  static public double min(double[] c) {
    double x = Double.MAX_VALUE;
    for (double d : c) x = Math.min(x, d);
    return x;
  }

  static public float min(float[] c) {
    float x = Float.MAX_VALUE;
    for (float d : c) x = Math.min(x, d);
    return x;
  }

  static public byte min(byte[] c) {
    byte x = 127;
    for (byte d : c) if (d < x)
      x = d;
    return x;
  }

  static public short min(short[] c) {
    short x = 0x7FFF;
    for (short d : c) if (d < x)
      x = d;
    return x;
  }

  static public int min(int[] c) {
    int x = Integer.MAX_VALUE;
    for (int d : c) if (d < x)
      x = d;
    return x;
  }

  static public <A> A optPar(ThreadLocal<A> tl, A defaultValue) {
    A a = tl.get();
    if (a != null) {
      tl.set(null);
      return a;
    }
    return defaultValue;
  }

  static public <A> A optPar(ThreadLocal<A> tl) {
    return optPar(tl, null);
  }

  static public Object optPar(Object[] params, String name) {
    return optParam(params, name);
  }

  static public Object optPar(String name, Object[] params) {
    return optParam(params, name);
  }

  static public Object optPar(String name, Map params) {
    return optParam(name, params);
  }

  static public <A> A optPar(Object[] params, String name, A defaultValue) {
    return optParam(params, name, defaultValue);
  }

  static public <A> A optPar(String name, Object[] params, A defaultValue) {
    return optParam(params, name, defaultValue);
  }

  static public String getComputerID() {
    try {
      return computerID();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  public static String rtrim(String s) {
    if (s == null)
      return null;
    int i = s.length();
    while (i > 0 && " \t\r\n".indexOf(s.charAt(i - 1)) >= 0) --i;
    return i < s.length() ? s.substring(0, i) : s;
  }

  static public String _computerID;

  static public Lock computerID_lock = lock();

  public static String computerID() {
    if (_computerID == null) {
      Lock __0 = computerID_lock;
      lock(__0);
      try {
        if (_computerID != null)
          return _computerID;
        File file = computerIDFile();
        _computerID = loadTextFile(file.getPath());
        if (_computerID == null) {
          _computerID = loadTextFile(userDir(".tinybrain/computer-id"));
          if (_computerID == null)
            _computerID = makeRandomID(12, new SecureRandom());
          saveTextFile(file, _computerID);
        }
      } finally {
        unlock(__0);
      }
    }
    return _computerID;
  }

  static public String localDateWithMilliseconds(Date time) {
    return localDateWithMilliseconds(time.getTime());
  }

  static public String localDateWithMilliseconds(long time) {
    SimpleDateFormat format = simpleDateFormat_local("yyyy/MM/dd HH:mm:ss''SSSS");
    return format.format(time);
  }

  static public String localDateWithMilliseconds() {
    return localDateWithMilliseconds(now());
  }

  static public TimeZone localTimeZone() {
    return getTimeZone(standardTimeZone());
  }

  static public String fromLines(Iterable lines) {
    StringBuilder buf = new StringBuilder();
    if (lines != null)
      for (Object line : lines) buf.append(str(line)).append('\n');
    return buf.toString();
  }

  static public String fromLines(String... lines) {
    return fromLines(asList(lines));
  }

  static public IterableIterator<String> toLines(File f) {
    return linesFromFile(f);
  }

  static public List<String> toLines(String s) {
    List<String> lines = new ArrayList<String>();
    if (s == null)
      return lines;
    int start = 0;
    while (true) {
      int i = toLines_nextLineBreak(s, start);
      if (i < 0) {
        if (s.length() > start)
          lines.add(s.substring(start));
        break;
      }
      lines.add(s.substring(start, i));
      if (s.charAt(i) == '\r' && i + 1 < s.length() && s.charAt(i + 1) == '\n')
        i += 2;
      else
        ++i;
      start = i;
    }
    return lines;
  }

  static public int toLines_nextLineBreak(String s, int start) {
    int n = s.length();
    for (int i = start; i < n; i++) {
      char c = s.charAt(i);
      if (c == '\r' || c == '\n')
        return i;
    }
    return -1;
  }

  static public String getMySignatureForText(String s) {
    return base64encode(PKI.sign(toUtf8(s), PKI.getStandardPrivateKey()));
  }

  static public <A> A assertEqualsOptionalVerbose(boolean verbose, Object x, A y) {
    return assertEqualsOptionalVerbose(verbose, null, x, y);
  }

  static public <A> A assertEqualsOptionalVerbose(boolean verbose, String msg, Object x, A y) {
    return verbose ? assertEqualsVerbose(msg, x, y) : assertEquals(msg, x, y);
  }

  static public boolean getAuthorOfSignedText_debug = false;

  static public String getAuthorOfSignedText(String signed) {
    return pairB(getAuthorOfSignedText2(signed));
  }

  static public Pair<String, String> getAuthorOfSignedText2(String signed) {
    try {
      List<String> lines = toLines(signed);
      String authorLine = nextToLast(lines);
      String sigLine = last(lines);
      if (getAuthorOfSignedText_debug)
        print("authorLine: " + authorLine);
      String text = fromLines(dropLast(lines));
      if (!startsWith(authorLine, "-"))
        return null;
      String author = dropPrefix("-", authorLine);
      author = beforeComma(author);
      if (!isComputerID(author))
        throw fail("Not a computer ID: " + author);
      String publicKey = getPublicKeyOfComputer(author);
      if (publicKey == null)
        throw fail("Computer " + author + " has to publish a public key.");
      if (!startsWith(sigLine, "sig: "))
        return null;
      String sig = dropPrefix("sig: ", sigLine);
      if (!PKI.verifySignature(PKI.publicKeyFromString(publicKey), PKI.signatureFromString(sig), toUtf8(text))) {
        print("Signature doesn't verify (key: ..." + publicKey + ")");
        print("Sig: " + sig);
        print("Text:");
        printIndent(">> ", text);
        return pair(author, null);
      }
      return pair(author, author);
    } catch (RuntimeException e) {
      printShortException(e);
      return null;
    }
  }

  static public Object vmBus_wrapArgs(Object... args) {
    return empty(args) ? null : l(args) == 1 ? args[0] : args;
  }

  static public void pcallFAll_minimalExceptionHandling(Collection l, Object... args) {
    if (l != null)
      for (Object f : cloneList(l)) {
        ping();
        pcallF_minimalExceptionHandling(f, args);
      }
  }

  static public void pcallFAll_minimalExceptionHandling(Iterator it, Object... args) {
    while (it.hasNext()) {
      ping();
      pcallF_minimalExceptionHandling(it.next(), args);
    }
  }

  static public Set vm_busListeners_live_cache;

  static public Set vm_busListeners_live() {
    if (vm_busListeners_live_cache == null)
      vm_busListeners_live_cache = vm_busListeners_live_load();
    return vm_busListeners_live_cache;
  }

  static public Set vm_busListeners_live_load() {
    return vm_generalIdentityHashSet("busListeners");
  }

  static public Map<String, Set> vm_busListenersByMessage_live_cache;

  static public Map<String, Set> vm_busListenersByMessage_live() {
    if (vm_busListenersByMessage_live_cache == null)
      vm_busListenersByMessage_live_cache = vm_busListenersByMessage_live_load();
    return vm_busListenersByMessage_live_cache;
  }

  static public Map<String, Set> vm_busListenersByMessage_live_load() {
    return vm_generalHashMap("busListenersByMessage");
  }

  static public String defaultThreadName_name;

  static public String defaultThreadName() {
    if (defaultThreadName_name == null)
      defaultThreadName_name = "A thread by " + programID();
    return defaultThreadName_name;
  }

  static public Runnable wrapAsActivity(Object r) {
    return toRunnable(r);
  }

  static public Thread newThread(Object runnable) {
    return new BetterThread(_topLevelErrorHandling(toRunnable(runnable)));
  }

  static public Thread newThread(Object runnable, String name) {
    if (name == null)
      name = defaultThreadName();
    return new BetterThread(_topLevelErrorHandling(toRunnable(runnable)), name);
  }

  static public Thread newThread(String name, Object runnable) {
    return newThread(runnable, name);
  }

  static public Runnable toRunnable(final Object o) {
    if (o instanceof Runnable)
      return (Runnable) o;
    return new Runnable() {

      public void run() {
        try {
          callF(o);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "callF(o)";
      }
    };
  }

  static public Map<Thread, Boolean> _registerThread_threads;

  static public Object _onRegisterThread;

  static public Thread _registerThread(Thread t) {
    if (_registerThread_threads == null)
      _registerThread_threads = newWeakHashMap();
    _registerThread_threads.put(t, true);
    vm_generalWeakSubMap("thread2mc").put(t, weakRef(mc()));
    callF(_onRegisterThread, t);
    return t;
  }

  static public void _registerThread() {
    _registerThread(Thread.currentThread());
  }

  static public String addToMechMap(String listName, Map<String, String> map) {
    return appendToMechMap(listName, map);
  }

  static public HashMap lithashmap(Object... x) {
    return litmap(x);
  }

  static public String getMyPublicKey() {
    return PKI.publicKeyToString(PKI.getStandardPublicKey());
  }

  static public Set<AutoCloseable> _registerAutoCloseable_set = synchroHashSet();

  static public void _registerAutoCloseable(AutoCloseable c) {
    addIfNotNull(_registerAutoCloseable_set, c);
  }

  static public void cleanMeUp__registerAutoCloseable() {
    closeAutoCloseables(getAndClearList(_registerAutoCloseable_set));
  }

  static public String unnull(String s) {
    return s == null ? "" : s;
  }

  static public <A> Collection<A> unnull(Collection<A> l) {
    return l == null ? emptyList() : l;
  }

  static public <A> List<A> unnull(List<A> l) {
    return l == null ? emptyList() : l;
  }

  static public int[] unnull(int[] l) {
    return l == null ? emptyIntArray() : l;
  }

  static public char[] unnull(char[] l) {
    return l == null ? emptyCharArray() : l;
  }

  static public double[] unnull(double[] l) {
    return l == null ? emptyDoubleArray() : l;
  }

  static public <A, B> Map<A, B> unnull(Map<A, B> l) {
    return l == null ? emptyMap() : l;
  }

  static public <A> Iterable<A> unnull(Iterable<A> i) {
    return i == null ? emptyList() : i;
  }

  static public <A> A[] unnull(A[] a) {
    return a == null ? (A[]) emptyObjectArray() : a;
  }

  static public BitSet unnull(BitSet b) {
    return b == null ? new BitSet() : b;
  }

  static public Pt unnull(Pt p) {
    return p == null ? new Pt() : p;
  }

  static public <A, B> Pair<A, B> unnull(Pair<A, B> p) {
    return p != null ? p : new Pair(null, null);
  }

  static public int unnull(Integer i) {
    return i == null ? 0 : i;
  }

  static public long unnull(Long l) {
    return l == null ? 0L : l;
  }

  static public boolean nemptyString(String s) {
    return s != null && s.length() > 0;
  }

  static public int strL(String s) {
    return s == null ? 0 : s.length();
  }

  static public int listL(Collection l) {
    return l == null ? 0 : l.size();
  }

  static public boolean neq(Object a, Object b) {
    return !eq(a, b);
  }

  static public <A> List<A> newSubListOrSame(List<A> l, int startIndex) {
    return newSubListOrSame(l, startIndex, l(l));
  }

  static public <A> List<A> newSubListOrSame(List<A> l, int startIndex, int endIndex) {
    if (l == null)
      return null;
    int n = l(l);
    startIndex = max(0, startIndex);
    endIndex = min(n, endIndex);
    if (startIndex >= endIndex)
      return ll();
    if (startIndex == 0 && endIndex == n)
      return l;
    return cloneList(l.subList(startIndex, endIndex));
  }

  static public int[] takeFirstOfIntArray(int[] b, int n) {
    return subIntArray(b, 0, n);
  }

  static public int[] takeFirstOfIntArray(int n, int[] b) {
    return takeFirstOfIntArray(b, n);
  }

  static public boolean endsWith(String a, String b) {
    return a != null && a.endsWith(b);
  }

  static public boolean endsWith(String a, char c) {
    return nempty(a) && lastChar(a) == c;
  }

  static public boolean endsWith(String a, String b, Matches m) {
    if (!endsWith(a, b))
      return false;
    m.m = new String[] { dropLast(l(b), a) };
    return true;
  }

  static public int lCharSequence(CharSequence s) {
    return s == null ? 0 : s.length();
  }

  static public <A> A printIndent(A o) {
    print(indentx(str(o)));
    return o;
  }

  static public <A> A printIndent(String indent, A o) {
    print(indentx(indent, str(o)));
    return o;
  }

  static public void printIndent(int indent, Object o) {
    print(indentx(indent, str(o)));
  }

  static public Class __javax;

  static public Class getJavaX() {
    try {
      return __javax;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public int withMargin_defaultWidth = 6;

  static public JPanel withMargin(Component c) {
    return withMargin(withMargin_defaultWidth, c);
  }

  static public JPanel withMargin(int w, Component c) {
    return withMargin(w, w, c);
  }

  static public JPanel withMargin(int w, int h, Component c) {
    return withMargin(w, h, w, h, c);
  }

  static public JPanel withMargin(final int top, final int left, final int bottom, final int right, final Component c) {
    return swing(new F0<JPanel>() {

      public JPanel get() {
        try {
          JPanel p = new JPanel(new BorderLayout());
          p.setBorder(BorderFactory.createEmptyBorder(top, left, bottom, right));
          p.add(c);
          return p;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "JPanel p = new JPanel(new BorderLayout);\r\n    p.setBorder(BorderFactory.creat...";
      }
    });
  }

  static public ThreadLocal<Object> print_byThread() {
    synchronized (print_byThread_lock) {
      if (print_byThread == null)
        print_byThread = new ThreadLocal();
    }
    return print_byThread;
  }

  static public AutoCloseable tempInterceptPrint(F1<String, Boolean> f) {
    return tempSetThreadLocal(print_byThread(), f);
  }

  static public Object defaultDefaultClassFinder() {
    return new F1<String, Class>() {

      public Class get(String name) {
        Class c = get2(name);
        return c;
      }

      public Class get2(String name) {
        if (eq(name, "<main>"))
          return mc();
        {
          Class c = findClass_fullName(name);
          if (c != null)
            return c;
        }
        if (startsWithAny(name, "loadableUtils.utils$", "main$", mcDollar()))
          for (String pkg : ll("loadableUtils.utils$", mcDollar())) {
            String newName = pkg + afterDollar(name);
            {
              Class c = findClass_fullName(newName);
              if (c != null)
                return c;
            }
          }
        return null;
      }
    };
  }

  static public boolean nempty(Collection c) {
    return !empty(c);
  }

  static public boolean nempty(CharSequence s) {
    return !empty(s);
  }

  static public boolean nempty(Object[] o) {
    return !empty(o);
  }

  static public boolean nempty(byte[] o) {
    return !empty(o);
  }

  static public boolean nempty(int[] o) {
    return !empty(o);
  }

  static public boolean nempty(Map m) {
    return !empty(m);
  }

  static public boolean nempty(Iterator i) {
    return i != null && i.hasNext();
  }

  static public boolean nempty(Object o) {
    return !empty(o);
  }

  static public String programIDWithCase() {
    return nempty(caseID()) ? programID() + "/" + quoteUnlessIdentifierOrInteger(caseID()) : programID();
  }

  static public JComponent wrap(Object swingable) {
    return _recordNewSwingComponent(wrap_2(swingable));
  }

  static public JComponent wrap_2(Object swingable) {
    if (swingable == null)
      return null;
    JComponent c;
    if (swingable instanceof Component)
      c = componentToJComponent(((Component) swingable));
    else
      c = componentToJComponent((Component) callOpt(swingable, "swing"));
    if (c instanceof JTable || c instanceof JList || c instanceof JTextArea || c instanceof JEditorPane || c instanceof JTextPane || c instanceof JTree)
      return jscroll(c);
    return c == null ? jlabel(str(swingable)) : c;
  }

  static public <A extends JComponent> A addMargin(final int top, final int left, final int bottom, final int right, final A c) {
    if (c != null) {
      swing(new Runnable() {

        public void run() {
          try {
            Border margin = BorderFactory.createEmptyBorder(top, left, bottom, right);
            c.setBorder(jCompoundBorder(c.getBorder(), margin));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "Border margin = BorderFactory.createEmptyBorder(top, left, bottom, right);\r\n ...";
        }
      });
    }
    return c;
  }

  static public <A extends JComponent> A addMargin(int w, A c) {
    return addMargin(w, w, w, w, c);
  }

  static public Object[] asArray(List l) {
    return toObjectArray(l);
  }

  static public <A> A[] asArray(Class<A> type, List l) {
    return (A[]) l.toArray((Object[]) Array.newInstance(type, l.size()));
  }

  static public <A> A swingConstruct(final Class<A> c, final Object... args) {
    return swing(new F0<A>() {

      public A get() {
        try {
          return nuObject(c, args);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret nuObject(c, args);";
      }
    });
  }

  static public void swingAndWait(Runnable r) {
    try {
      if (isAWTThread())
        r.run();
      else
        EventQueue.invokeAndWait(addThreadInfoToRunnable(r));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Object swingAndWait(final Object f) {
    if (isAWTThread())
      return callF(f);
    else {
      final Var result = new Var();
      swingAndWait(new Runnable() {

        public void run() {
          try {
            result.set(callF(f));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "result.set(callF(f));";
        }
      });
      return result.get();
    }
  }

  static public JTextField standardTextFieldPopupMenu(final JTextField tf) {
    final WeakReference<JTextField> ref = weakRef(tf);
    componentPopupMenuItem(tf, "Copy text to clipboard", new Runnable() {

      public void run() {
        try {
          copyTextToClipboard(ref.get().getText());
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "copyTextToClipboard(ref.get().getText())";
      }
    });
    componentPopupMenuItem(tf, "Paste", new Runnable() {

      public void run() {
        try {
          ref.get().paste();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ref.get().paste()";
      }
    });
    return tf;
  }

  static public <A extends JTextComponent> A jenableUndoRedo(final A textcomp) {
    {
      swing(new Runnable() {

        public void run() {
          try {
            final UndoManager undo = new UndoManager();
            vm_generalWeakSet("Undo Managers").add(undo);
            textcomp.getDocument().addUndoableEditListener(new UndoableEditListener() {

              public void undoableEditHappened(UndoableEditEvent evt) {
                undo.addEdit(evt.getEdit());
              }
            });
            textcomp.getActionMap().put("Undo", abstractAction("Undo", new Runnable() {

              public void run() {
                try {
                  if (undo.canUndo())
                    undo.undo();
                } catch (Exception __e) {
                  throw rethrow(__e);
                }
              }

              public String toString() {
                return "if (undo.canUndo()) undo.undo()";
              }
            }));
            textcomp.getActionMap().put("Redo", abstractAction("Redo", new Runnable() {

              public void run() {
                try {
                  if (undo.canRedo())
                    undo.redo();
                } catch (Exception __e) {
                  throw rethrow(__e);
                }
              }

              public String toString() {
                return "if (undo.canRedo()) undo.redo()";
              }
            }));
            textcomp.getInputMap().put(KeyStroke.getKeyStroke("control Z"), "Undo");
            textcomp.getInputMap().put(KeyStroke.getKeyStroke("control Y"), "Redo");
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "final new UndoManager undo;\r\n    vm_generalWeakSet(\"Undo Managers\").add(undo)...";
        }
      });
    }
    return textcomp;
  }

  static public String strOrEmpty(Object o) {
    return o == null ? "" : str(o);
  }

  static public <A extends JComponent> A bindLiveValueListenerToComponent(A component, final LiveValue lv, final Runnable listener) {
    if (lv != null)
      bindToComponent(component, new Runnable() {

        public void run() {
          try {
            lv.onChangeAndNow(listener);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "ifdef bindLiveValueListenerToComponent_debug\r\n          print(\"bindLiveValueL...";
        }
      }, new Runnable() {

        public void run() {
          try {
            lv.removeOnChangeListener(listener);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "lv.removeOnChangeListener(listener)";
        }
      });
    return component;
  }

  static public <A extends JTextComponent> A setTextKeepCaret(final String text, final A c) {
    if (c != null) {
      swing(new Runnable() {

        public void run() {
          try {
            int caret = c.getCaretPosition();
            setText(c, text);
            setCaretPosition(c, caret);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "int caret = c.getCaretPosition();\r\n    setText(c, text);\r\n    setCaretPositio...";
        }
      });
    }
    return c;
  }

  static public <A extends JTextComponent> A setTextKeepCaret(A c, String text) {
    return setTextKeepCaret(text, c);
  }

  static public <A extends JSpinner> A onChange(A spinner, Object r) {
    {
      swing(new Runnable() {

        public void run() {
          try {
            spinner.addChangeListener(changeListener(r));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "spinner.addChangeListener(changeListener(r));";
        }
      });
    }
    return spinner;
  }

  static public <A extends AbstractButton> A onChange(A b, Object r) {
    {
      swing(new Runnable() {

        public void run() {
          try {
            b.addItemListener(itemListener(r));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "b.addItemListener(itemListener(r));";
        }
      });
    }
    return b;
  }

  static public void onChange(JTextComponent tc, Object r) {
    onUpdate(tc, r);
  }

  static public <A extends JSlider> A onChange(A slider, final Object r) {
    {
      swing(new Runnable() {

        public void run() {
          try {
            slider.addChangeListener(changeListener(r));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "slider.addChangeListener(changeListener(r));";
        }
      });
    }
    return slider;
  }

  static public JComboBox onChange(Object r, JComboBox cb) {
    return onChange(cb, r);
  }

  static public JComboBox onChange(JComboBox cb, final Object r) {
    if (isEditableComboBox(cb))
      onChange(textFieldFromComboBox(cb), r);
    else
      onSelectedItem(cb, new VF1<String>() {

        public void get(String s) {
          try {
            callF(r);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "callF(r)";
        }
      });
    return cb;
  }

  static public String getText(final AbstractButton c) {
    return c == null ? "" : (String) swingAndWait(new F0<Object>() {

      public Object get() {
        try {
          return c.getText();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret c.getText();";
      }
    });
  }

  static public String getText(final JTextComponent c) {
    return c == null ? "" : (String) swingAndWait(new F0<Object>() {

      public Object get() {
        try {
          return c.getText();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret c.getText();";
      }
    });
  }

  static public String getText(final JLabel l) {
    return l == null ? "" : (String) swingAndWait(new F0<Object>() {

      public Object get() {
        try {
          return l.getText();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret l.getText();";
      }
    });
  }

  static public String getText(final JComboBox cb) {
    if (cb == null)
      return null;
    if (isEditableComboBox(cb))
      return unnull((String) cb.getEditor().getItem());
    else
      return str(cb.getSelectedItem());
  }

  static volatile public boolean ping_pauseAll = false;

  static public int ping_sleep = 100;

  static volatile public boolean ping_anyActions = false;

  static public Map<Thread, Object> ping_actions = newWeakHashMap();

  static public ThreadLocal<Boolean> ping_isCleanUpThread = new ThreadLocal();

  static public boolean ping() {
    if (ping_pauseAll || ping_anyActions)
      ping_impl(true);
    return true;
  }

  static public boolean ping_impl(boolean okInCleanUp) {
    try {
      if (ping_pauseAll && !isAWTThread()) {
        do Thread.sleep(ping_sleep); while (ping_pauseAll);
        return true;
      }
      if (ping_anyActions) {
        if (!okInCleanUp && !isTrue(ping_isCleanUpThread.get()))
          failIfUnlicensed();
        Object action = null;
        synchronized (ping_actions) {
          if (!ping_actions.isEmpty()) {
            action = ping_actions.get(currentThread());
            if (action instanceof Runnable)
              ping_actions.remove(currentThread());
            if (ping_actions.isEmpty())
              ping_anyActions = false;
          }
        }
        if (action instanceof Runnable)
          ((Runnable) action).run();
        else if (eq(action, "cancelled"))
          throw fail("Thread cancelled.");
      }
      return false;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Thread currentThread() {
    return Thread.currentThread();
  }

  static public Map<Thread, Object> vm_threadInterruptionReasonsMap() {
    return vm_generalWeakSubMap("Thread interruption reasons");
  }

  static public String strOr(Object o, String ifNull) {
    return o == null ? ifNull : str(o);
  }

  static public <A extends Throwable> A printStackTrace(A e) {
    print(getStackTrace(e));
    return e;
  }

  static public void printStackTrace() {
    printStackTrace(new Throwable());
  }

  static public void printStackTrace(String msg) {
    printStackTrace(new Throwable(msg));
  }

  static public void printStackTrace(String msg, Throwable e) {
    printStackTrace(new Throwable(msg, e));
  }

  static public void lockOrFail(Lock lock, long timeout) {
    try {
      ping();
      vmBus_send("locking", lock, "thread", currentThread());
      if (!lock.tryLock(timeout, TimeUnit.MILLISECONDS)) {
        String s = "Couldn't acquire lock after " + timeout + " ms.";
        if (lock instanceof ReentrantLock) {
          ReentrantLock l = (ReentrantLock) lock;
          s += " Hold count: " + l.getHoldCount() + ", owner: " + call(l, "getOwner");
        }
        throw fail(s);
      }
      vmBus_send("locked", lock, "thread", currentThread());
      ping();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public ReentrantLock fairLock() {
    return new ReentrantLock(true);
  }

  static public void messageBox(final String msg) {
    if (headless())
      print(msg);
    else {
      swing(new Runnable() {

        public void run() {
          try {
            JOptionPane.showMessageDialog(null, msg, "JavaX", JOptionPane.INFORMATION_MESSAGE);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "JOptionPane.showMessageDialog(null, msg, \"JavaX\", JOptionPane.INFORMATION_MES...";
        }
      });
    }
  }

  static public void messageBox(Throwable e) {
    printStackTrace(e);
    messageBox(hideCredentials(innerException2(e)));
  }

  static public ActionListener actionListener(final Object runnable) {
    return actionListener(runnable, null);
  }

  static public ActionListener actionListener(final Object runnable, final Object instanceToHold) {
    if (runnable instanceof ActionListener)
      return (ActionListener) runnable;
    final Object info = _threadInfo();
    return new java.awt.event.ActionListener() {

      public void actionPerformed(java.awt.event.ActionEvent _evt) {
        try {
          _threadInheritInfo(info);
          AutoCloseable __1 = holdInstance(instanceToHold);
          try {
            callF(runnable);
          } finally {
            _close(__1);
          }
        } catch (Throwable __e) {
          messageBox(__e);
        }
      }
    };
  }

  static public KeyListener enterKeyListener(final Object action) {
    return new KeyAdapter() {

      public void keyPressed(KeyEvent ke) {
        if (ke.getKeyCode() == KeyEvent.VK_ENTER)
          pcallF(action);
      }
    };
  }

  static public Runnable rCallOnSelectedListItem(final JList list, final Object action) {
    return new Runnable() {

      public void run() {
        try {
          pcallF(action, getSelectedItem(list));
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "pcallF(action, getSelectedItem(list))";
      }
    };
  }

  static public AbstractAction abstractAction(String name, final Object runnable) {
    return new AbstractAction(name) {

      public void actionPerformed(ActionEvent evt) {
        pcallF(runnable);
      }
    };
  }

  static public void addKeyListener(final Component c, final KeyListener l) {
    if (c != null) {
      swing(new Runnable() {

        public void run() {
          try {
            c.addKeyListener(l);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "c.addKeyListener(l);";
        }
      });
    }
  }

  static public KeyListener ctrlEnterKeyListener(final Object action) {
    final Object info = _threadInfo();
    return new KeyAdapter() {

      public void keyReleased(KeyEvent ke) {
        if (ke.getKeyCode() == KeyEvent.VK_ENTER && ke.getModifiers() == KeyEvent.CTRL_MASK) {
          _threadInheritInfo(info);
          pcallF(action);
        }
      }
    };
  }

  static public Object pcallF(Object f, Object... args) {
    return pcallFunction(f, args);
  }

  static public <A> A pcallF(F0<A> f) {
    try {
      return f == null ? null : f.get();
    } catch (Throwable __e) {
      return null;
    }
  }

  static public <A, B> B pcallF(F1<A, B> f, A a) {
    try {
      return f == null ? null : f.get(a);
    } catch (Throwable __e) {
      return null;
    }
  }

  static public <A> void pcallF(VF1<A> f, A a) {
    try {
      {
        if (f != null)
          f.get(a);
      }
    } catch (Throwable __e) {
      _handleException(__e);
    }
  }

  static public <A> A pcallF(IF0<A> f) {
    try {
      return f == null ? null : f.get();
    } catch (Throwable __e) {
      return null;
    }
  }

  static public <A, B> B pcallF(IF1<A, B> f, A a) {
    try {
      return f == null ? null : f.get(a);
    } catch (Throwable __e) {
      return null;
    }
  }

  static public void setChecked(JCheckBox checkBox, boolean b) {
    if (checkBox != null) {
      swing(new Runnable() {

        public void run() {
          try {
            if (isChecked(checkBox) != b)
              checkBox.setSelected(b);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "if (isChecked(checkBox) != b)\r\n      checkBox.setSelected(b);";
        }
      });
    }
  }

  static public void setChecked(JCheckBoxMenuItem mi, boolean b) {
    if (mi != null) {
      swing(new Runnable() {

        public void run() {
          try {
            mi.setSelected(b);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "mi.setSelected(b);";
        }
      });
    }
  }

  static public boolean isChecked(JCheckBox checkBox) {
    return checkBox != null && (boolean) swing(new F0<Boolean>() {

      public Boolean get() {
        try {
          return checkBox.isSelected();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret checkBox.isSelected();";
      }
    });
  }

  static public boolean isChecked(JCheckBoxMenuItem mi) {
    return mi != null && (boolean) swing(new F0<Boolean>() {

      public Boolean get() {
        try {
          return mi.isSelected();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret mi.isSelected();";
      }
    });
  }

  static public boolean isChecked(JRadioButton rb) {
    return rb != null && (boolean) swing(() -> rb.isSelected());
  }

  static public String dropPrefix(String prefix, String s) {
    return s == null ? null : s.startsWith(prefix) ? s.substring(l(prefix)) : s;
  }

  static public RuntimeException asRuntimeException(Throwable t) {
    if (t instanceof Error)
      _handleError((Error) t);
    return t instanceof RuntimeException ? (RuntimeException) t : new RuntimeException(t);
  }

  static public String getClassName(Object o) {
    return o == null ? "null" : o instanceof Class ? ((Class) o).getName() : o.getClass().getName();
  }

  static public <A> A printHidingCredentials(A o) {
    print(hideCredentials(str(o)));
    return o;
  }

  static public String hideCredentials(URL url) {
    return url == null ? null : hideCredentials(str(url));
  }

  static public String hideCredentials(String url) {
    try {
      if (startsWithOneOf(url, "http://", "https://") && isAGIBlueDomain(hostNameFromURL(url)))
        return url;
    } catch (Throwable e) {
      print("HideCredentials", e);
    }
    return url.replaceAll("([&?])(_pass|key|cookie)=[^&\\s\"]*", "$1$2=<hidden>");
  }

  static public String hideCredentials(Object o) {
    return hideCredentials(str(o));
  }

  static public void logQuotedWithDate(String s) {
    logQuotedWithTime(s);
  }

  static public void logQuotedWithDate(String logFile, String s) {
    logQuotedWithTime(logFile, s);
  }

  static public void logQuotedWithDate(File logFile, String s) {
    logQuotedWithTime(logFile, s);
  }

  static public File infoBoxesLogFile() {
    return new File(javaxDataDir(), "Logs/infoBoxes.txt");
  }

  static public JWindow showWindow(Component c) {
    JWindow w = new JWindow();
    w.add(wrap(c));
    return w;
  }

  static public JPanel infoMessage_makePanel(String text) {
    final JTextArea ta = wrappedTextArea(text);
    onClick(ta, new Runnable() {

      public void run() {
        try {
          disposeWindow(ta);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "disposeWindow(ta)";
      }
    });
    int size = 14;
    if (l(text) <= 50)
      size *= 2;
    else if (l(text) < 100)
      size = iround(size * 1.5);
    ta.setFont(typeWriterFont(size));
    JScrollPane sp = jscroll(ta);
    return withMargin(sp);
  }

  static public int moveToTopRightCorner_inset = 20;

  static public <A extends Component> A moveToTopRightCorner(A a) {
    return moveToTopRightCorner(moveToTopRightCorner_inset, moveToTopRightCorner_inset, a);
  }

  static public <A extends Component> A moveToTopRightCorner(int insetX, int insetY, A a) {
    Window w = getWindow(a);
    if (w != null)
      w.setLocation(getScreenSize().width - w.getWidth() - insetX, insetY);
    return a;
  }

  static public boolean vmBus_noObjections(String msg, Object... args) {
    return !vmBus_anyFalse(msg, args);
  }

  static public <A extends Window> A disposeWindowAfter(int delay, final A w) {
    if (w != null)
      swingLater(delay, new Runnable() {

        public void run() {
          try {
            w.dispose();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "w.dispose();";
        }
      });
    return w;
  }

  static public <A extends Window> A disposeWindowAfter(A w, double seconds) {
    return disposeWindowAfter(toMS_int(seconds), w);
  }

  static public <A extends Window> A disposeWindowAfter(double seconds, A w) {
    return disposeWindowAfter(w, seconds);
  }

  static public int iround(double d) {
    return (int) Math.round(d);
  }

  static public int iround(Number n) {
    return iround(toDouble(n));
  }

  static public String exceptionToStringShort(Throwable e) {
    lastException(e);
    e = getInnerException(e);
    String msg = hideCredentials(unnull(e.getMessage()));
    if (msg.indexOf("Error") < 0 && msg.indexOf("Exception") < 0)
      return baseClassName(e) + prependIfNempty(": ", msg);
    else
      return msg;
  }

  static public boolean endsWithLetterOrDigit(String s) {
    return s != null && s.length() > 0 && Character.isLetterOrDigit(s.charAt(s.length() - 1));
  }

  static public <A> A or(A a, A b) {
    return a != null ? a : b;
  }

  static public boolean eq(Object a, Object b) {
    return a == b || a != null && b != null && a.equals(b);
  }

  static public Object call_withVarargs(Object o, String method, Object... args) {
    try {
      if (o == null)
        return null;
      if (o instanceof Class) {
        Class c = (Class) o;
        _MethodCache cache = callOpt_getCache(c);
        Method me = cache.findStaticMethod(method, args);
        if (me != null)
          return invokeMethod(me, null, args);
        List<Method> methods = cache.cache.get(method);
        if (methods != null)
          methodSearch: for (Method m : methods) {
            {
              if (!(m.isVarArgs()))
                continue;
            }
            {
              if (!(isStaticMethod(m)))
                continue;
            }
            Object[] newArgs = massageArgsForVarArgsCall(m, args);
            if (newArgs != null)
              return invokeMethod(m, null, newArgs);
          }
        throw fail("Method " + c.getName() + "." + method + "(" + joinWithComma(classNames(args)) + ") not found");
      } else {
        Class c = o.getClass();
        _MethodCache cache = callOpt_getCache(c);
        Method me = cache.findMethod(method, args);
        if (me != null)
          return invokeMethod(me, o, args);
        List<Method> methods = cache.cache.get(method);
        if (methods != null)
          methodSearch: for (Method m : methods) {
            {
              if (!(m.isVarArgs()))
                continue;
            }
            Object[] newArgs = massageArgsForVarArgsCall(m, args);
            if (newArgs != null)
              return invokeMethod(m, o, newArgs);
          }
        throw fail("Method " + c.getName() + "." + method + "(" + joinWithComma(classNames(args)) + ") not found");
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static volatile public PersistableThrowable lastException_lastException;

  static public PersistableThrowable lastException() {
    return lastException_lastException;
  }

  static public void lastException(Throwable e) {
    lastException_lastException = persistableThrowable(e);
  }

  static public void rotateStringBuffer(StringBuffer buf, int max) {
    try {
      if (buf == null)
        return;
      synchronized (buf) {
        if (buf.length() <= max)
          return;
        try {
          int newLength = max / 2;
          int ofs = buf.length() - newLength;
          String newString = buf.substring(ofs);
          buf.setLength(0);
          buf.append("[...] ").append(newString);
        } catch (Exception e) {
          buf.setLength(0);
        }
        buf.trimToSize();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void rotateStringBuilder(StringBuilder buf, int max) {
    try {
      if (buf == null)
        return;
      synchronized (buf) {
        if (buf.length() <= max)
          return;
        try {
          int newLength = max / 2;
          int ofs = buf.length() - newLength;
          String newString = buf.substring(ofs);
          buf.setLength(0);
          buf.append("[...] ").append(newString);
        } catch (Exception e) {
          buf.setLength(0);
        }
        buf.trimToSize();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public <A> A optParam(ThreadLocal<A> tl, A defaultValue) {
    return optPar(tl, defaultValue);
  }

  static public <A> A optParam(ThreadLocal<A> tl) {
    return optPar(tl);
  }

  static public Object optParam(String name, Map params) {
    return mapGet(params, name);
  }

  static public <A> A optParam(Object[] opt, String name, A defaultValue) {
    int n = l(opt);
    if (n == 1 && opt[0] instanceof Map) {
      Map map = (Map) (opt[0]);
      return map.containsKey(name) ? (A) map.get(name) : defaultValue;
    }
    if (!even(l(opt)))
      throw fail("Odd parameter length");
    for (int i = 0; i < l(opt); i += 2) if (eq(opt[i], name))
      return (A) opt[i + 1];
    return defaultValue;
  }

  static public Object optParam(Object[] opt, String name) {
    return optParam(opt, name, null);
  }

  static public Object optParam(String name, Object[] params) {
    return optParam(params, name);
  }

  static public File computerIDFile() {
    return javaxDataDir("Basic Info/computer-id.txt");
  }

  static public String loadTextFile(String fileName) {
    return loadTextFile(fileName, null);
  }

  static public String loadTextFile(File f, String defaultContents) {
    return loadTextFile(f, defaultContents, "UTF-8");
  }

  static public String loadTextFile(File f, String defaultContents, String encoding) {
    try {
      checkFileNotTooBigToRead(f);
      if (f == null || !f.exists())
        return defaultContents;
      FileInputStream fileInputStream = new FileInputStream(f);
      InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream, encoding);
      return loadTextFile(inputStreamReader);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  public static String loadTextFile(File fileName) {
    return loadTextFile(fileName, null);
  }

  static public String loadTextFile(String fileName, String defaultContents) {
    return fileName == null ? defaultContents : loadTextFile(newFile(fileName), defaultContents);
  }

  static public String loadTextFile(Reader reader) throws IOException {
    StringBuilder builder = new StringBuilder();
    try {
      char[] buffer = new char[1024];
      int n;
      while (-1 != (n = reader.read(buffer))) builder.append(buffer, 0, n);
    } finally {
      reader.close();
    }
    return str(builder);
  }

  static public File userDir() {
    return new File(userHome());
  }

  static public File userDir(String path) {
    return new File(userHome(), path);
  }

  static public String makeRandomID(int length) {
    return makeRandomID(length, defaultRandomGenerator());
  }

  static public String makeRandomID(int length, Random random) {
    char[] id = new char[length];
    for (int i = 0; i < id.length; i++) id[i] = (char) ((int) 'a' + random.nextInt(26));
    return new String(id);
  }

  static public String makeRandomID(Random r, int length) {
    return makeRandomID(length, r);
  }

  static public File saveTextFile(String fileName, String contents) throws IOException {
    CriticalAction action = beginCriticalAction("Saving file " + fileName + " (" + l(contents) + " chars)");
    try {
      File file = new File(fileName);
      mkdirsForFile(file);
      String tempFileName = fileName + "_temp";
      File tempFile = new File(tempFileName);
      if (contents != null) {
        if (tempFile.exists())
          try {
            String saveName = tempFileName + ".saved." + now();
            copyFile(tempFile, new File(saveName));
          } catch (Throwable e) {
            printStackTrace(e);
          }
        FileOutputStream fileOutputStream = newFileOutputStream(tempFile.getPath());
        OutputStreamWriter outputStreamWriter = new OutputStreamWriter(fileOutputStream, "UTF-8");
        PrintWriter printWriter = new PrintWriter(outputStreamWriter);
        printWriter.print(contents);
        printWriter.close();
      }
      if (file.exists() && !file.delete())
        throw new IOException("Can't delete " + fileName);
      if (contents != null)
        if (!tempFile.renameTo(file))
          throw new IOException("Can't rename " + tempFile + " to " + file);
      vmBus_send("wroteFile", file);
      return file;
    } finally {
      action.done();
    }
  }

  static public File saveTextFile(File fileName, String contents) {
    try {
      saveTextFile(fileName.getPath(), contents);
      return fileName;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public SimpleDateFormat simpleDateFormat_local(String format) {
    SimpleDateFormat sdf = new SimpleDateFormat(format);
    sdf.setTimeZone(localTimeZone());
    return sdf;
  }

  static public long now_virtualTime;

  static public long now() {
    return now_virtualTime != 0 ? now_virtualTime : System.currentTimeMillis();
  }

  static public TimeZone getTimeZone(String name) {
    return TimeZone.getTimeZone(name);
  }

  static public String standardTimeZone_name = "Europe/Berlin";

  static public String standardTimeZone() {
    return standardTimeZone_name;
  }

  static public <A> ArrayList<A> asList(A[] a) {
    return a == null ? new ArrayList<A>() : new ArrayList<A>(Arrays.asList(a));
  }

  static public ArrayList<Integer> asList(int[] a) {
    if (a == null)
      return null;
    ArrayList<Integer> l = emptyList(a.length);
    for (int i : a) l.add(i);
    return l;
  }

  static public ArrayList<Long> asList(long[] a) {
    if (a == null)
      return null;
    ArrayList<Long> l = emptyList(a.length);
    for (long i : a) l.add(i);
    return l;
  }

  static public ArrayList<Float> asList(float[] a) {
    if (a == null)
      return null;
    ArrayList<Float> l = emptyList(a.length);
    for (float i : a) l.add(i);
    return l;
  }

  static public ArrayList<Double> asList(double[] a) {
    if (a == null)
      return null;
    ArrayList<Double> l = emptyList(a.length);
    for (double i : a) l.add(i);
    return l;
  }

  static public <A> ArrayList<A> asList(Iterator<A> it) {
    ArrayList l = new ArrayList();
    if (it != null)
      while (it.hasNext()) l.add(it.next());
    return l;
  }

  static public <A> ArrayList<A> asList(IterableIterator<A> s) {
    return asList((Iterator) s);
  }

  static public <A> ArrayList<A> asList(Iterable<A> s) {
    if (s instanceof ArrayList)
      return (ArrayList) s;
    ArrayList l = new ArrayList();
    if (s != null)
      for (A a : s) l.add(a);
    return l;
  }

  static public <A> ArrayList<A> asList(Enumeration<A> e) {
    ArrayList l = new ArrayList();
    if (e != null)
      while (e.hasMoreElements()) l.add(e.nextElement());
    return l;
  }

  static public CloseableIterableIterator<String> linesFromFile(File f) {
    return linesFromFile(f, null);
  }

  static public CloseableIterableIterator<String> linesFromFile(File f, IResourceHolder resourceHolder) {
    try {
      if (!f.exists())
        return emptyCloseableIterableIterator();
      if (ewic(f.getName(), ".gz"))
        return linesFromReader(utf8bufferedReader(newGZIPInputStream(f)), resourceHolder);
      return linesFromReader(utf8bufferedReader(f), resourceHolder);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public CloseableIterableIterator<String> linesFromFile(String path) {
    return linesFromFile(path, null);
  }

  static public CloseableIterableIterator<String> linesFromFile(String path, IResourceHolder resourceHolder) {
    return linesFromFile(newFile(path), resourceHolder);
  }

  static public String base64encode(byte[] a) {
    int aLen = a.length;
    int numFullGroups = aLen / 3;
    int numBytesInPartialGroup = aLen - 3 * numFullGroups;
    int resultLen = 4 * ((aLen + 2) / 3);
    StringBuffer result = new StringBuffer(resultLen);
    char[] intToAlpha = intToBase64;
    int inCursor = 0;
    for (int i = 0; i < numFullGroups; i++) {
      int byte0 = a[inCursor++] & 0xff;
      int byte1 = a[inCursor++] & 0xff;
      int byte2 = a[inCursor++] & 0xff;
      result.append(intToAlpha[byte0 >> 2]);
      result.append(intToAlpha[(byte0 << 4) & 0x3f | (byte1 >> 4)]);
      result.append(intToAlpha[(byte1 << 2) & 0x3f | (byte2 >> 6)]);
      result.append(intToAlpha[byte2 & 0x3f]);
    }
    if (numBytesInPartialGroup != 0) {
      int byte0 = a[inCursor++] & 0xff;
      result.append(intToAlpha[byte0 >> 2]);
      if (numBytesInPartialGroup == 1) {
        result.append(intToAlpha[(byte0 << 4) & 0x3f]);
        result.append("==");
      } else {
        int byte1 = a[inCursor++] & 0xff;
        result.append(intToAlpha[(byte0 << 4) & 0x3f | (byte1 >> 4)]);
        result.append(intToAlpha[(byte1 << 2) & 0x3f]);
        result.append('=');
      }
    }
    return result.toString();
  }

  static final public char[] intToBase64 = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/' };

  static public byte[] toUtf8(String s) {
    try {
      return s.getBytes(utf8charset());
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public <A> A assertEqualsVerbose(Object x, A y) {
    assertEqualsVerbose((String) null, x, y);
    return y;
  }

  static public <A> A assertEqualsVerbose(String msg, Object x, A y) {
    if (!eq(x, y)) {
      throw fail((nempty(msg) ? msg + ": " : "") + "expected: " + x + ", got: " + y);
    } else
      print("OK" + (empty(msg) ? "" : " " + msg) + ": " + (x));
    return y;
  }

  static public <A> A assertEquals(Object x, A y) {
    return assertEquals(null, x, y);
  }

  static public <A> A assertEquals(String msg, Object x, A y) {
    if (assertVerbose())
      return assertEqualsVerbose(msg, x, y);
    if (!(x == null ? y == null : x.equals(y)))
      throw fail((msg != null ? msg + ": " : "") + y + " != " + x);
    return y;
  }

  static public <A, B> B pairB(Pair<A, B> p) {
    return p == null ? null : p.b;
  }

  static public <A> A nextToLast(List<A> l) {
    return get(l, l(l) - 2);
  }

  static public <A> A last(List<A> l) {
    return empty(l) ? null : l.get(l.size() - 1);
  }

  static public char last(String s) {
    return empty(s) ? '#' : s.charAt(l(s) - 1);
  }

  static public int last(int[] a) {
    return l(a) != 0 ? a[l(a) - 1] : 0;
  }

  static public double last(double[] a) {
    return l(a) != 0 ? a[l(a) - 1] : 0;
  }

  static public <A> A last(A[] a) {
    return l(a) != 0 ? a[l(a) - 1] : null;
  }

  static public <A> A last(Iterator<A> it) {
    A a = null;
    while (it.hasNext()) {
      ping();
      a = it.next();
    }
    return a;
  }

  static public <A> A last(Collection<A> l) {
    if (l == null)
      return null;
    if (l instanceof List)
      return (A) last(((List) l));
    if (l instanceof SortedSet)
      return (A) last(((SortedSet) l));
    Iterator<A> it = iterator(l);
    A a = null;
    while (it.hasNext()) {
      ping();
      a = it.next();
    }
    return a;
  }

  static public <A> A last(SortedSet<A> l) {
    return l == null ? null : l.last();
  }

  static public <A> A[] dropLast(A[] a) {
    return dropLast(a, 1);
  }

  static public <A> A[] dropLast(A[] a, int n) {
    if (a == null)
      return null;
    n = Math.min(n, a.length);
    A[] b = arrayOfSameType(a, a.length - n);
    System.arraycopy(a, 0, b, 0, b.length);
    return b;
  }

  static public <A> List<A> dropLast(List<A> l) {
    return subList(l, 0, l(l) - 1);
  }

  static public <A> List<A> dropLast(int n, List<A> l) {
    return subList(l, 0, l(l) - n);
  }

  static public <A> List<A> dropLast(Iterable<A> l) {
    return dropLast(asList(l));
  }

  static public String dropLast(String s) {
    return substring(s, 0, l(s) - 1);
  }

  static public String dropLast(String s, int n) {
    return substring(s, 0, l(s) - n);
  }

  static public String dropLast(int n, String s) {
    return dropLast(s, n);
  }

  static public String beforeComma(String s) {
    return substring(s, 0, smartIndexOf(s, ','));
  }

  static public boolean isComputerID(String s) {
    return isRandomID(s, 12);
  }

  static public String getPublicKeyOfComputer(String computer) {
    if (!isComputerID(computer))
      return null;
    if (eq(computer, computerID()))
      return getMyPublicKey();
    return mechMap("Computer Public Keys").get(computer);
  }

  static public <A, B> Pair<A, B> pair(A a, B b) {
    return new Pair(a, b);
  }

  static public <A> Pair<A, A> pair(A a) {
    return new Pair(a, a);
  }

  static public void printShortException(Throwable e) {
    print(exceptionToStringShort(e));
  }

  static public void printShortException(String s, Throwable e) {
    print(s, exceptionToStringShort(e));
  }

  static public <A> ArrayList<A> cloneList(Iterable<A> l) {
    return l instanceof Collection ? cloneList((Collection) l) : asList(l);
  }

  static public <A> ArrayList<A> cloneList(Collection<A> l) {
    if (l == null)
      return new ArrayList();
    synchronized (collectionMutex(l)) {
      return new ArrayList<A>(l);
    }
  }

  static public Object pcallF_minimalExceptionHandling(Object f, Object... args) {
    try {
      return callFunction(f, args);
    } catch (Throwable e) {
      System.out.println(getStackTrace(e));
      _storeException(e);
    }
    return null;
  }

  static public String programID() {
    return getProgramID();
  }

  static public String programID(Object o) {
    return getProgramID(o);
  }

  static public Runnable _topLevelErrorHandling(final Runnable runnable) {
    final Object info = _threadInfo();
    return new Runnable() {

      public void run() {
        try {
          try {
            _threadInheritInfo(info);
            runnable.run();
          } catch (Throwable __e) {
            _handleException(__e);
          }
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "pcall {\r\n      _threadInheritInfo(info);\r\n      runnable.run();\r\n    }";
      }
    };
  }

  static public <A> WeakReference<A> weakRef(A a) {
    return newWeakReference(a);
  }

  static public String appendToMechMap(String listName, Map<String, String> map) {
    return appendToMechList(listName, formatDoubleArrowMap(map));
  }

  static public HashMap litmap(Object... x) {
    HashMap map = new HashMap();
    litmap_impl(map, x);
    return map;
  }

  static public void litmap_impl(Map map, Object... x) {
    if (x != null)
      for (int i = 0; i < x.length - 1; i += 2) if (x[i + 1] != null)
        map.put(x[i], x[i + 1]);
  }

  static public <A> Set<A> synchroHashSet() {
    return Collections.synchronizedSet(new HashSet<A>());
  }

  static public <A> boolean addIfNotNull(Collection<A> l, A a) {
    return a != null && l != null & l.add(a);
  }

  static public <A> void addIfNotNull(MultiSet<A> ms, A a) {
    if (a != null && ms != null)
      ms.add(a);
  }

  static public void closeAutoCloseables(Collection<AutoCloseable> l) {
    if (l != null)
      for (AutoCloseable c : l) {
        try {
          c.close();
        } catch (Throwable __e) {
          _handleException(__e);
        }
      }
  }

  static public <A> List<A> getAndClearList(Collection<A> l) {
    if (l == null)
      return emptyList();
    synchronized (collectionMutex(l)) {
      List<A> out = cloneList(l);
      l.clear();
      return out;
    }
  }

  static public ArrayList emptyList() {
    return new ArrayList();
  }

  static public ArrayList emptyList(int capacity) {
    return new ArrayList(max(0, capacity));
  }

  static public ArrayList emptyList(Iterable l) {
    return l instanceof Collection ? emptyList(((Collection) l).size()) : emptyList();
  }

  static public ArrayList emptyList(Object[] l) {
    return emptyList(l(l));
  }

  static public <A> ArrayList<A> emptyList(Class<A> c) {
    return new ArrayList();
  }

  static public int[] emptyIntArray_a = new int[0];

  static public int[] emptyIntArray() {
    return emptyIntArray_a;
  }

  static public char[] emptyCharArray = new char[0];

  static public char[] emptyCharArray() {
    return emptyCharArray;
  }

  static public double[] emptyDoubleArray = new double[0];

  static public double[] emptyDoubleArray() {
    return emptyDoubleArray;
  }

  static public Map emptyMap() {
    return new HashMap();
  }

  static public Object[] emptyObjectArray_a = new Object[0];

  static public Object[] emptyObjectArray() {
    return emptyObjectArray_a;
  }

  static public int max(int a, int b) {
    return Math.max(a, b);
  }

  static public int max(int a, int b, int c) {
    return max(max(a, b), c);
  }

  static public long max(int a, long b) {
    return Math.max((long) a, b);
  }

  static public long max(long a, long b) {
    return Math.max(a, b);
  }

  static public double max(int a, double b) {
    return Math.max((double) a, b);
  }

  static public float max(float a, float b) {
    return Math.max(a, b);
  }

  static public double max(double a, double b) {
    return Math.max(a, b);
  }

  static public int max(Collection<Integer> c) {
    int x = Integer.MIN_VALUE;
    for (int i : c) x = max(x, i);
    return x;
  }

  static public double max(double[] c) {
    if (c.length == 0)
      return Double.MIN_VALUE;
    double x = c[0];
    for (int i = 1; i < c.length; i++) x = Math.max(x, c[i]);
    return x;
  }

  static public float max(float[] c) {
    if (c.length == 0)
      return Float.MAX_VALUE;
    float x = c[0];
    for (int i = 1; i < c.length; i++) x = Math.max(x, c[i]);
    return x;
  }

  static public byte max(byte[] c) {
    byte x = -128;
    for (byte d : c) if (d > x)
      x = d;
    return x;
  }

  static public short max(short[] c) {
    short x = -0x8000;
    for (short d : c) if (d > x)
      x = d;
    return x;
  }

  static public int max(int[] c) {
    int x = Integer.MIN_VALUE;
    for (int d : c) if (d > x)
      x = d;
    return x;
  }

  static public <A> List<A> ll(A... a) {
    ArrayList l = new ArrayList(a.length);
    if (a != null)
      for (A x : a) l.add(x);
    return l;
  }

  static public int[] subIntArray(int[] b, int start) {
    return subIntArray(b, start, l(b));
  }

  static public int[] subIntArray(int[] b, int start, int end) {
    start = max(start, 0);
    end = min(end, l(b));
    if (start == 0 && end == l(b))
      return b;
    if (start >= end)
      return new int[0];
    int[] x = new int[end - start];
    System.arraycopy(b, start, x, 0, end - start);
    return x;
  }

  static public char lastChar(String s) {
    return empty(s) ? '\0' : s.charAt(l(s) - 1);
  }

  static public String indentx(String s) {
    return indentx(indent_default, s);
  }

  static public String indentx(int n, String s) {
    return dropSuffix(repeat(' ', n), indent(n, s));
  }

  static public String indentx(String indent, String s) {
    return dropSuffix(indent, indent(indent, s));
  }

  static public <A> AutoCloseable tempSetThreadLocal(final ThreadLocal<A> tl, A a) {
    if (tl == null)
      return null;
    final A prev = setThreadLocal(tl, a);
    return new AutoCloseable() {

      public String toString() {
        return "tl.set(prev);";
      }

      public void close() throws Exception {
        tl.set(prev);
      }
    };
  }

  static public Object get2(Object o, String field1, String field2) {
    return get(get(o, field1), field2);
  }

  static public boolean startsWithAny(String a, Collection<String> b) {
    for (String prefix : unnullForIteration(b)) if (startsWith(a, prefix))
      return true;
    return false;
  }

  static public boolean startsWithAny(String a, String... b) {
    if (b != null)
      for (String prefix : unnullForIteration(b)) if (startsWith(a, prefix))
        return true;
    return false;
  }

  static public boolean startsWithAny(String a, Collection<String> b, Matches m) {
    for (String prefix : unnullForIteration(b)) if (startsWith(a, prefix, m))
      return true;
    return false;
  }

  static public String mcDollar() {
    return mcName() + "$";
  }

  static public String afterDollar(String s) {
    return substring(s, smartIndexOf(s, '$') + 1);
  }

  static volatile public String caseID_caseID;

  static public String caseID() {
    return caseID_caseID;
  }

  static public void caseID(String id) {
    caseID_caseID = id;
  }

  static public String quoteUnlessIdentifierOrInteger(String s) {
    return quoteIfNotIdentifierOrInteger(s);
  }

  static public <A extends Component> A _recordNewSwingComponent(A c) {
    if (c != null)
      callF((Object) vm_generalMap_get("newSwingComponentRegistry"), (Object) c);
    return c;
  }

  static public JComponent componentToJComponent(Component c) {
    if (c instanceof JComponent)
      return (JComponent) c;
    if (c instanceof JFrame)
      return ((JFrame) c).getRootPane();
    if (c == null)
      return null;
    throw fail("boohoo " + getClassName(c));
  }

  static public JScrollPane jscroll(final Component c) {
    return swing(new F0<JScrollPane>() {

      public JScrollPane get() {
        try {
          return new JScrollPane(c);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret new JScrollPane(c);";
      }
    });
  }

  static public Border jCompoundBorder(Border inner, Border outer) {
    if (inner == null)
      return outer;
    if (outer == null)
      return inner;
    return BorderFactory.createCompoundBorder(inner, outer);
  }

  static public Object[] toObjectArray(Collection c) {
    List l = asList(c);
    return l.toArray(new Object[l.size()]);
  }

  static public Object nuObject(String className, Object... args) {
    try {
      return nuObject(classForName(className), args);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public <A> A nuObject(Class<A> c, Object... args) {
    try {
      if (args.length == 0)
        return nuObjectWithoutArguments(c);
      Constructor m = nuObject_findConstructor(c, args);
      makeAccessible(m);
      return (A) m.newInstance(args);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Constructor nuObject_findConstructor(Class c, Object... args) {
    for (Constructor m : c.getDeclaredConstructors()) {
      if (!nuObject_checkArgs(m.getParameterTypes(), args, false))
        continue;
      return m;
    }
    throw fail("Constructor " + c.getName() + getClasses(args) + " not found" + (args.length == 0 && (c.getModifiers() & java.lang.reflect.Modifier.STATIC) == 0 ? " - hint: it's a non-static class!" : ""));
  }

  static public boolean nuObject_checkArgs(Class[] types, Object[] args, boolean debug) {
    if (types.length != args.length) {
      if (debug)
        System.out.println("Bad parameter length: " + args.length + " vs " + types.length);
      return false;
    }
    for (int i = 0; i < types.length; i++) if (!(args[i] == null || isInstanceX(types[i], args[i]))) {
      if (debug)
        System.out.println("Bad parameter " + i + ": " + args[i] + " vs " + types[i]);
      return false;
    }
    return true;
  }

  static public boolean isAWTThread() {
    if (isAndroid())
      return false;
    if (isHeadless())
      return false;
    return isAWTThread_awt();
  }

  static public boolean isAWTThread_awt() {
    return SwingUtilities.isEventDispatchThread();
  }

  static public Runnable addThreadInfoToRunnable(final Object r) {
    final Object info = _threadInfo();
    return info == null ? asRunnable(r) : new Runnable() {

      public void run() {
        try {
          _inheritThreadInfo(info);
          callF(r);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "_inheritThreadInfo(info); callF(r);";
      }
    };
  }

  static public <A extends JComponent> A componentPopupMenuItem(A c, final String name, final Object action) {
    componentPopupMenu(c, new VF1<JPopupMenu>() {

      public void get(JPopupMenu menu) {
        try {
          addMenuItem(menu, name, action);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "addMenuItem(menu, name, action);";
      }
    });
    return c;
  }

  static public void componentPopupMenuItem(JComponent c, final JMenuItem menuItem) {
    componentPopupMenu(c, new VF1<JPopupMenu>() {

      public void get(JPopupMenu menu) {
        try {
          addMenuItem(menu, menuItem);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "addMenuItem(menu, menuItem);";
      }
    });
  }

  static public String copyTextToClipboard(Object _text) {
    String text = str(_text);
    StringSelection selection = new StringSelection(text);
    Toolkit.getDefaultToolkit().getSystemClipboard().setContents(selection, selection);
    vmBus_send("newClipboardContents", text);
    return text;
  }

  static public Set vm_generalWeakSet(Object name) {
    synchronized (get(javax(), "generalMap")) {
      Set set = (Set) (vm_generalMap_get(name));
      if (set == null)
        vm_generalMap_put(name, set = newWeakHashSet());
      return set;
    }
  }

  static public boolean setText_opt = true;

  static public <A extends JTextComponent> A setText(A c, Object text) {
    setText((JComponent) c, text);
    return c;
  }

  static public <A extends JComboBox> A setText(final A c, Object text) {
    final String s = strUnnull(text);
    {
      swing(new Runnable() {

        public void run() {
          try {
            c.getEditor().setItem(s);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "c.getEditor().setItem(s);";
        }
      });
    }
    return c;
  }

  static public void setText(JLabel c, Object text) {
    setText((JComponent) c, text);
  }

  static public JButton setText(JButton c, Object text) {
    setText((JComponent) c, jlabel_textAsHTML_center_ifNeeded(strUnnull(text)));
    return c;
  }

  static public <A extends JComponent> A setText(final A c, Object text) {
    if (c == null)
      return null;
    final String s = strUnnull(text);
    {
      swing(new Runnable() {

        public void run() {
          try {
            if (!setText_opt || neq(callOpt(c, "getText"), s))
              call(c, "setText", s);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "if (!setText_opt || neq(callOpt(c, \"getText\"), s))\r\n      call(c, \"setText\", s);";
        }
      });
    }
    return c;
  }

  static public void setCaretPosition(final JTextComponent c, final int pos) {
    if (c != null) {
      swing(new Runnable() {

        public void run() {
          try {
            try {
              int _pos = max(0, min(l(c.getText()), pos));
              c.setCaretPosition(_pos);
            } catch (Throwable __e) {
              _handleException(__e);
            }
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "pcall {\r\n      int _pos = max(0, min(l(c.getText()), pos));\r\n      c.setCaret...";
        }
      });
    }
  }

  static public ChangeListener changeListener(final Object r) {
    return new ChangeListener() {

      public void stateChanged(ChangeEvent e) {
        pcallF(r);
      }
    };
  }

  static public ItemListener itemListener(final Object r) {
    return new ItemListener() {

      public void itemStateChanged(ItemEvent e) {
        pcallF(r);
      }
    };
  }

  static public void onUpdate(JComponent c, final Object r) {
    if (c instanceof JTextComponent)
      ((JTextComponent) c).getDocument().addDocumentListener(new DocumentListener() {

        public void insertUpdate(DocumentEvent e) {
          call(r);
        }

        public void removeUpdate(DocumentEvent e) {
          call(r);
        }

        public void changedUpdate(DocumentEvent e) {
          call(r);
        }
      });
    else if (c instanceof ItemSelectable)
      ((ItemSelectable) c).addItemListener(new ItemListener() {

        public void itemStateChanged(ItemEvent e) {
          call(r);
        }
      });
    else
      print("Warning: onUpdate doesn't know " + getClassName(c));
  }

  static public void onUpdate(List<? extends JComponent> l, Object r) {
    for (JComponent c : l) onUpdate(c, r);
  }

  static public boolean isEditableComboBox(final JComboBox cb) {
    return cb != null && swing(new F0<Boolean>() {

      public Boolean get() {
        try {
          return cb.isEditable();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret cb.isEditable();";
      }
    });
  }

  static public JTextField textFieldFromComboBox(JComboBox cb) {
    return (JTextField) cb.getEditor().getEditorComponent();
  }

  static public JComboBox onSelectedItem(final JComboBox cb, final VF1<String> f) {
    addActionListener(cb, new Runnable() {

      public void run() {
        try {
          pcallF(f, selectedItem(cb));
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "pcallF(f, selectedItem(cb))";
      }
    });
    return cb;
  }

  static public void failIfUnlicensed() {
    assertTrue("license off", licensed());
  }

  static public boolean headless() {
    return isHeadless();
  }

  static public Throwable innerException2(Throwable e) {
    if (e == null)
      return null;
    while (empty(e.getMessage()) && e.getCause() != null) e = e.getCause();
    return e;
  }

  static public ThreadLocal<List<Object>> holdInstance_l = new ThreadLocal();

  static public AutoCloseable holdInstance(Object o) {
    if (o == null)
      return null;
    listThreadLocalAdd(holdInstance_l, o);
    return new AutoCloseable() {

      public void close() {
        listThreadLocalPopLast(holdInstance_l);
      }
    };
  }

  static public String getSelectedItem(JList l) {
    return (String) l.getSelectedValue();
  }

  static public String getSelectedItem(JComboBox cb) {
    return strOrNull(cb.getSelectedItem());
  }

  static public Object pcallFunction(Object f, Object... args) {
    try {
      return callFunction(f, args);
    } catch (Throwable __e) {
      _handleException(__e);
    }
    return null;
  }

  static volatile public PersistableThrowable _handleException_lastException;

  static public List _handleException_onException = synchroList(ll((IVF1<Throwable>) (__1 -> printStackTrace2(__1))));

  static public boolean _handleException_showThreadCancellations = false;

  static public void _handleException(Throwable e) {
    _handleException_lastException = persistableThrowable(e);
    Throwable e2 = innerException(e);
    if (e2.getClass() == RuntimeException.class && eq(e2.getMessage(), "Thread cancelled.") || e2 instanceof InterruptedException) {
      if (_handleException_showThreadCancellations)
        System.out.println(getStackTrace_noRecord(e2));
      return;
    }
    for (Object f : cloneList(_handleException_onException)) try {
      callF(f, e);
    } catch (Throwable e3) {
      try {
        printStackTrace2(e3);
      } catch (Throwable e4) {
        System.out.println(getStackTrace(e3));
        System.out.println(getStackTrace(e4));
      }
    }
  }

  static public void _handleError(Error e) {
    call(javax(), "_handleError", e);
  }

  static public boolean startsWithOneOf(String s, String... l) {
    for (String x : l) if (startsWith(s, x))
      return true;
    return false;
  }

  static public boolean startsWithOneOf(String s, Matches m, String... l) {
    for (String x : l) if (startsWith(s, x, m))
      return true;
    return false;
  }

  static public boolean isAGIBlueDomain(String domain) {
    return domainIsUnder(domain, theAGIBlueDomain());
  }

  static public String hostNameFromURL(String url) {
    try {
      return new URL(url).getHost();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void logQuotedWithTime(String s) {
    logQuotedWithTime(standardLogFile(), s);
  }

  static public void logQuotedWithTime(File logFile, String s) {
    logQuoted(logFile, logQuotedWithTime_format(s));
  }

  static public void logQuotedWithTime(String logFile, String s) {
    logQuoted(logFile, logQuotedWithTime_format(s));
  }

  static public String logQuotedWithTime_format(String s) {
    return (now()) + " " + s;
  }

  static public File javaxDataDir_dir;

  static public File javaxDataDir() {
    return javaxDataDir_dir != null ? javaxDataDir_dir : new File(userHome(), "JavaX-Data");
  }

  static public File javaxDataDir(String... subs) {
    return newFile(javaxDataDir(), subs);
  }

  static public JTextArea wrappedTextArea(final JTextArea ta) {
    enableWordWrapForTextArea(ta);
    return ta;
  }

  static public JTextArea wrappedTextArea() {
    return wrappedTextArea(jtextarea());
  }

  static public JTextArea wrappedTextArea(String text) {
    JTextArea ta = wrappedTextArea();
    setText(ta, text);
    return ta;
  }

  static public <A extends JComponent> A onClick(final A c, final Object runnable) {
    if (c != null) {
      swing(new Runnable() {

        public void run() {
          try {
            c.addMouseListener(new MouseAdapter() {

              public void mouseClicked(MouseEvent e) {
                callF(runnable, e);
              }
            });
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "c.addMouseListener(new MouseAdapter {\r\n      public void mouseClicked(MouseEv...";
        }
      });
    }
    return c;
  }

  static public void onClick(JButton btn, final Object runnable) {
    onEnter(btn, runnable);
  }

  static public void disposeWindow(final Window window) {
    if (window != null) {
      swing(new Runnable() {

        public void run() {
          try {
            window.dispatchEvent(new WindowEvent(window, WindowEvent.WINDOW_CLOSING));
            myFrames_list.remove(window);
            window.dispose();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "window.dispatchEvent(new WindowEvent(window, WindowEvent.WINDOW_CLOSING)); //...";
        }
      });
    }
  }

  static public void disposeWindow(final Component c) {
    disposeWindow(getWindow(c));
  }

  static public void disposeWindow(Object o) {
    if (o != null)
      disposeWindow(((Component) o));
  }

  static public void disposeWindow() {
    disposeWindow(heldInstance(Component.class));
  }

  static public Font typeWriterFont() {
    return typeWriterFont(iround(14 * getSwingFontScale()));
  }

  static public Font typeWriterFont(int size) {
    return new Font("Courier", Font.PLAIN, size);
  }

  static public Window getWindow(Object o) {
    if (!(o instanceof Component))
      return null;
    return swing(() -> {
      Component c = (Component) o;
      while (c != null) {
        if (c instanceof Window)
          return ((Window) c);
        c = c.getParent();
      }
      return null;
    });
  }

  static public Dimension getScreenSize() {
    return Toolkit.getDefaultToolkit().getScreenSize();
  }

  static public boolean vmBus_anyFalse(String msg, Object... args) {
    return contains(vmBus_queryAll(msg, args), false);
  }

  static public void swingLater(long delay, final Object r) {
    javax.swing.Timer timer = new javax.swing.Timer(toInt(delay), actionListener(wrapAsActivity(r)));
    timer.setRepeats(false);
    timer.start();
  }

  static public void swingLater(Object r) {
    SwingUtilities.invokeLater(toRunnable(r));
  }

  static public int toMS_int(double seconds) {
    return toInt_checked((long) (seconds * 1000));
  }

  static public double toDouble(Object o) {
    if (o instanceof Number)
      return ((Number) o).doubleValue();
    if (o instanceof BigInteger)
      return ((BigInteger) o).doubleValue();
    if (o instanceof String)
      return parseDouble(((String) o));
    if (o == null)
      return 0.0;
    throw fail(o);
  }

  static public Throwable getInnerException(Throwable e) {
    if (e == null)
      return null;
    while (e.getCause() != null) e = e.getCause();
    return e;
  }

  static public Throwable getInnerException(Runnable r) {
    return getInnerException(getException(r));
  }

  static public String baseClassName(String className) {
    return substring(className, className.lastIndexOf('.') + 1);
  }

  static public String baseClassName(Object o) {
    return baseClassName(getClassName(o));
  }

  static public String prependIfNempty(String prefix, String s) {
    return empty(s) ? unnull(s) : prefix + s;
  }

  static final public Map<Class, _MethodCache> callOpt_cache = newDangerousWeakHashMap();

  static public Object callOpt_cached(Object o, String methodName, Object... args) {
    try {
      if (o == null)
        return null;
      if (o instanceof Class) {
        Class c = (Class) o;
        _MethodCache cache = callOpt_getCache(c);
        Method me = cache.findMethod(methodName, args);
        if (me == null || (me.getModifiers() & Modifier.STATIC) == 0)
          return null;
        return invokeMethod(me, null, args);
      } else {
        Class c = o.getClass();
        _MethodCache cache = callOpt_getCache(c);
        Method me = cache.findMethod(methodName, args);
        if (me == null)
          return null;
        return invokeMethod(me, o, args);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public _MethodCache callOpt_getCache(Class c) {
    _MethodCache cache = callOpt_cache.get(c);
    if (cache == null)
      callOpt_cache.put(c, cache = new _MethodCache(c));
    return cache;
  }

  static public Object invokeMethod(Method m, Object o, Object... args) {
    try {
      try {
        return m.invoke(o, args);
      } catch (InvocationTargetException e) {
        throw rethrow(getExceptionCause(e));
      } catch (IllegalArgumentException e) {
        throw new IllegalArgumentException(e.getMessage() + " - was calling: " + m + ", args: " + joinWithSpace(classNames(args)));
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public boolean isStaticMethod(Method m) {
    return methodIsStatic(m);
  }

  static public Object[] massageArgsForVarArgsCall(Method m, Object[] args) {
    Class<?>[] types = m.getParameterTypes();
    int n = types.length - 1, nArgs = args.length;
    if (nArgs < n)
      return null;
    for (int i = 0; i < n; i++) if (!argumentCompatibleWithType(args[i], types[i]))
      return null;
    Class varArgType = types[n].getComponentType();
    for (int i = n; i < nArgs; i++) if (!argumentCompatibleWithType(args[i], varArgType))
      return null;
    Object[] newArgs = new Object[n + 1];
    arraycopy(args, 0, newArgs, 0, n);
    Object[] varArgs = arrayOfType(varArgType, nArgs - n);
    arraycopy(args, n, varArgs, 0, nArgs - n);
    newArgs[n] = varArgs;
    return newArgs;
  }

  static public <A> String joinWithComma(Collection<A> c) {
    return join(", ", c);
  }

  static public String joinWithComma(String... c) {
    return join(", ", c);
  }

  static public String joinWithComma(Pair p) {
    return p == null ? "" : joinWithComma(str(p.a), str(p.b));
  }

  static public List<String> classNames(Collection l) {
    return getClassNames(l);
  }

  static public List<String> classNames(Object[] l) {
    return getClassNames(Arrays.asList(l));
  }

  static public PersistableThrowable persistableThrowable(Throwable e) {
    return e == null ? null : new PersistableThrowable(e);
  }

  static public <A, B> B mapGet(Map<A, B> map, A a) {
    return map == null || a == null ? null : map.get(a);
  }

  static public <A, B> B mapGet(A a, Map<A, B> map) {
    return map == null || a == null ? null : map.get(a);
  }

  static public boolean even(int i) {
    return (i & 1) == 0;
  }

  static public boolean even(long i) {
    return (i & 1) == 0;
  }

  static public boolean even(BigInteger n) {
    return even(n.intValue());
  }

  static public ThreadLocal<VF1<File>> checkFileNotTooBigToRead_tl = new ThreadLocal();

  static public void checkFileNotTooBigToRead(File f) {
    callF(checkFileNotTooBigToRead_tl.get(), f);
  }

  static public File newFile(File base, String... names) {
    for (String name : names) base = new File(base, name);
    return base;
  }

  static public File newFile(String name) {
    return name == null ? null : new File(name);
  }

  static public File newFile(String base, String... names) {
    return newFile(newFile(base), names);
  }

  static public String _userHome;

  static public String userHome() {
    if (_userHome == null)
      return actualUserHome();
    return _userHome;
  }

  static public File userHome(String path) {
    return new File(userDir(), path);
  }

  static public Random defaultRandomGenerator() {
    return ThreadLocalRandom.current();
  }

  static public List<CriticalAction> beginCriticalAction_inFlight = synchroList();

  static public class CriticalAction {

    public String description;

    public CriticalAction() {
    }

    public CriticalAction(String description) {
      this.description = description;
    }

    public void done() {
      beginCriticalAction_inFlight.remove(this);
    }
  }

  static public CriticalAction beginCriticalAction(String description) {
    ping();
    CriticalAction c = new CriticalAction(description);
    beginCriticalAction_inFlight.add(c);
    return c;
  }

  static public void cleanMeUp_beginCriticalAction() {
    int n = 0;
    while (nempty(beginCriticalAction_inFlight)) {
      int m = l(beginCriticalAction_inFlight);
      if (m != n) {
        n = m;
        try {
          print("Waiting for " + n2(n, "critical actions") + ": " + join(", ", collect(beginCriticalAction_inFlight, "description")));
        } catch (Throwable __e) {
          _handleException(__e);
        }
      }
      sleepInCleanUp(10);
    }
  }

  public static File mkdirsForFile(File file) {
    File dir = file.getParentFile();
    if (dir != null) {
      dir.mkdirs();
      if (!dir.isDirectory())
        if (dir.isFile())
          throw fail("Please delete the file " + f2s(dir) + " - it is supposed to be a directory!");
        else
          throw fail("Unknown IO exception during mkdirs of " + f2s(file));
    }
    return file;
  }

  public static String mkdirsForFile(String path) {
    mkdirsForFile(new File(path));
    return path;
  }

  static public File copyFile(File src, File dest) {
    try {
      FileInputStream inputStream = new FileInputStream(src.getPath());
      FileOutputStream outputStream = newFileOutputStream(dest.getPath());
      try {
        copyStream(inputStream, outputStream);
        inputStream.close();
      } finally {
        outputStream.close();
      }
      return dest;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public FileOutputStream newFileOutputStream(File path) throws IOException {
    return newFileOutputStream(path.getPath());
  }

  static public FileOutputStream newFileOutputStream(String path) throws IOException {
    return newFileOutputStream(path, false);
  }

  static public FileOutputStream newFileOutputStream(File path, boolean append) throws IOException {
    return newFileOutputStream(path.getPath(), append);
  }

  static public FileOutputStream newFileOutputStream(String path, boolean append) throws IOException {
    mkdirsForFile(path);
    FileOutputStream f = new FileOutputStream(path, append);
    _registerIO(f, path, true);
    return f;
  }

  static public CloseableIterableIterator emptyCloseableIterableIterator_instance = new CloseableIterableIterator() {

    public Object next() {
      throw fail();
    }

    public boolean hasNext() {
      return false;
    }
  };

  static public <A> CloseableIterableIterator<A> emptyCloseableIterableIterator() {
    return emptyCloseableIterableIterator_instance;
  }

  static public boolean ewic(String a, String b) {
    return endsWithIgnoreCase(a, b);
  }

  static public boolean ewic(String a, String b, Matches m) {
    return endsWithIgnoreCase(a, b, m);
  }

  static public CloseableIterableIterator<String> linesFromReader(Reader r) {
    return linesFromReader(r, null);
  }

  static public CloseableIterableIterator<String> linesFromReader(Reader r, IResourceHolder resourceHolder) {
    final BufferedReader br = bufferedReader(r);
    return holdResource(resourceHolder, iteratorFromFunction_f0_autoCloseable(new F0<String>() {

      public String get() {
        try {
          return readLineFromReaderWithClose(br);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret readLineFromReaderWithClose(br);";
      }
    }, _wrapIOCloseable(r)));
  }

  static public BufferedReader utf8bufferedReader(InputStream in) {
    try {
      return in == null ? null : bufferedReader(_registerIOWrap(new InputStreamReader(in, "UTF-8"), in));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public BufferedReader utf8bufferedReader(File f) {
    try {
      return utf8bufferedReader(newFileInputStream(f));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public GZIPInputStream newGZIPInputStream(File f) {
    return gzInputStream(f);
  }

  static public GZIPInputStream newGZIPInputStream(InputStream in) {
    return gzInputStream(in);
  }

  static public Charset utf8charset_cache;

  static public Charset utf8charset() {
    if (utf8charset_cache == null)
      utf8charset_cache = utf8charset_load();
    return utf8charset_cache;
  }

  static public Charset utf8charset_load() {
    return Charset.forName("UTF-8");
  }

  static public ThreadLocal<Boolean> assertVerbose_value = new ThreadLocal();

  static public void assertVerbose(boolean b) {
    assertVerbose_value.set(b);
  }

  static public boolean assertVerbose() {
    return isTrue(assertVerbose_value.get());
  }

  static public <A> Iterator<A> iterator(Iterable<A> c) {
    return c == null ? emptyIterator() : c.iterator();
  }

  static public <A> A[] arrayOfSameType(A[] a, int n) {
    return newObjectArrayOfSameType(a, n);
  }

  static public <A> List<A> subList(List<A> l, int startIndex) {
    return subList(l, startIndex, l(l));
  }

  static public <A> List<A> subList(int startIndex, List<A> l) {
    return subList(l, startIndex);
  }

  static public <A> List<A> subList(int startIndex, int endIndex, List<A> l) {
    return subList(l, startIndex, endIndex);
  }

  static public <A> List<A> subList(List<A> l, int startIndex, int endIndex) {
    if (l == null)
      return null;
    int n = l(l);
    startIndex = Math.max(0, startIndex);
    endIndex = Math.min(n, endIndex);
    if (startIndex >= endIndex)
      return ll();
    if (startIndex == 0 && endIndex == n)
      return l;
    return l.subList(startIndex, endIndex);
  }

  static public int smartIndexOf(String s, String sub, int i) {
    if (s == null)
      return 0;
    i = s.indexOf(sub, min(i, l(s)));
    return i >= 0 ? i : l(s);
  }

  static public int smartIndexOf(String s, int i, char c) {
    return smartIndexOf(s, c, i);
  }

  static public int smartIndexOf(String s, char c, int i) {
    if (s == null)
      return 0;
    i = s.indexOf(c, min(i, l(s)));
    return i >= 0 ? i : l(s);
  }

  static public int smartIndexOf(String s, String sub) {
    return smartIndexOf(s, sub, 0);
  }

  static public int smartIndexOf(String s, char c) {
    return smartIndexOf(s, c, 0);
  }

  static public <A> int smartIndexOf(List<A> l, A sub) {
    return smartIndexOf(l, sub, 0);
  }

  static public <A> int smartIndexOf(List<A> l, int start, A sub) {
    return smartIndexOf(l, sub, start);
  }

  static public <A> int smartIndexOf(List<A> l, A sub, int start) {
    int i = indexOf(l, sub, start);
    return i < 0 ? l(l) : i;
  }

  static public boolean isRandomID(String s, int len) {
    if (l(s) != len)
      return false;
    for (int i = 0; i < len; i++) if (!Character.isLetter(s.charAt(i)))
      return false;
    return true;
  }

  static public Map<String, String> mechMap(String listName) {
    return mechMapCI(listName);
  }

  static public Object collectionMutex(List l) {
    return l;
  }

  static public Object collectionMutex(Object o) {
    if (o instanceof List)
      return o;
    String c = className(o);
    if (eq(c, "java.util.TreeMap$KeySet"))
      c = className(o = getOpt(o, "m"));
    else if (eq(c, "java.util.HashMap$KeySet"))
      c = className(o = get_raw(o, "this$0"));
    if (eqOneOf(c, "java.util.TreeMap$AscendingSubMap", "java.util.TreeMap$DescendingSubMap"))
      c = className(o = get_raw(o, "m"));
    return o;
  }

  static public Object callFunction(Object f, Object... args) {
    return callF(f, args);
  }

  static public Throwable _storeException_value;

  static public void _storeException(Throwable e) {
    _storeException_value = e;
  }

  static public String getProgramID() {
    return nempty(programID) ? formatSnippetIDOpt(programID) : "?";
  }

  static public String getProgramID(Class c) {
    String id = (String) getOpt(c, "programID");
    if (nempty(id))
      return formatSnippetID(id);
    return "?";
  }

  static public String getProgramID(Object o) {
    return getProgramID(getMainClass(o));
  }

  static public <A> WeakReference<A> newWeakReference(A a) {
    return a == null ? null : new WeakReference(a);
  }

  static public String appendToMechList(String name, String text) {
    return botAppendToMechList_uniqCI(name, text);
  }

  static public String appendToMechList(String name, Collection<String> lines) {
    return botAppendToMechList_uniqCI(name, lines);
  }

  static public String formatDoubleArrowMap(Map map) {
    return lines(mapMapToList(map, new F2<Object, Object, String>() {

      public String get(Object key, Object value) {
        try {
          return str(key) + " => " + str(value);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "str(key) + \" => \" + str(value)";
      }
    }));
  }

  static public String dropSuffix(String suffix, String s) {
    return s.endsWith(suffix) ? s.substring(0, l(s) - l(suffix)) : s;
  }

  static public String repeat(char c, int n) {
    n = Math.max(n, 0);
    char[] chars = new char[n];
    for (int i = 0; i < n; i++) chars[i] = c;
    return new String(chars);
  }

  static public <A> List<A> repeat(A a, int n) {
    n = Math.max(n, 0);
    List<A> l = new ArrayList(n);
    for (int i = 0; i < n; i++) l.add(a);
    return l;
  }

  static public <A> List<A> repeat(int n, A a) {
    return repeat(a, n);
  }

  static public int indent_default = 2;

  static public String indent(int indent) {
    return repeat(' ', indent);
  }

  static public String indent(int indent, String s) {
    return indent(repeat(' ', indent), s);
  }

  static public String indent(String indent, String s) {
    return indent + s.replace("\n", "\n" + indent);
  }

  static public String indent(String s) {
    return indent(indent_default, s);
  }

  static public List<String> indent(String indent, List<String> lines) {
    List<String> l = new ArrayList();
    if (lines != null)
      for (String s : lines) l.add(indent + s);
    return l;
  }

  static public Map<JFrame, Boolean> myFrames_list = weakHashMap();

  static public List<JFrame> myFrames() {
    return swing(new F0<List<JFrame>>() {

      public List<JFrame> get() {
        try {
          return keysList(myFrames_list);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret keysList(myFrames_list);";
      }
    });
  }

  static public <A> A setThreadLocal(ThreadLocal<A> tl, A value) {
    if (tl == null)
      return null;
    A old = tl.get();
    tl.set(value);
    return old;
  }

  static public String unnullForIteration(String s) {
    return s == null ? "" : s;
  }

  static public <A> Collection<A> unnullForIteration(Collection<A> l) {
    return l == null ? immutableEmptyList() : l;
  }

  static public <A> List<A> unnullForIteration(List<A> l) {
    return l == null ? immutableEmptyList() : l;
  }

  static public int[] unnullForIteration(int[] l) {
    return l == null ? emptyIntArray() : l;
  }

  static public char[] unnullForIteration(char[] l) {
    return l == null ? emptyCharArray() : l;
  }

  static public double[] unnullForIteration(double[] l) {
    return l == null ? emptyDoubleArray() : l;
  }

  static public <A, B> Map<A, B> unnullForIteration(Map<A, B> l) {
    return l == null ? immutableEmptyMap() : l;
  }

  static public <A> Iterable<A> unnullForIteration(Iterable<A> i) {
    return i == null ? immutableEmptyList() : i;
  }

  static public <A> A[] unnullForIteration(A[] a) {
    return a == null ? (A[]) emptyObjectArray() : a;
  }

  static public BitSet unnullForIteration(BitSet b) {
    return b == null ? new BitSet() : b;
  }

  static public Pt unnullForIteration(Pt p) {
    return p == null ? new Pt() : p;
  }

  static public <A, B> Pair<A, B> unnullForIteration(Pair<A, B> p) {
    return p != null ? p : new Pair(null, null);
  }

  static public long unnullForIteration(Long l) {
    return l == null ? 0L : l;
  }

  static public String mcName() {
    return mc().getName();
  }

  static public String quoteIfNotIdentifierOrInteger(String s) {
    if (s == null)
      return null;
    return isJavaIdentifier(s) || isInteger(s) ? s : quote(s);
  }

  static public Object vm_generalMap_get(Object key) {
    return vm_generalMap().get(key);
  }

  static public Map<String, Class> classForName_cache = synchroHashMap();

  static public Class classForName(String name) {
    try {
      if (classForName_cache == null)
        return Class.forName(name);
      Class c = classForName_cache.get(name);
      if (c == null)
        classForName_cache.put(name, c = Class.forName(name));
      return c;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Map<Class, Constructor> nuObjectWithoutArguments_cache = newDangerousWeakHashMap();

  static public Object nuObjectWithoutArguments(String className) {
    try {
      return nuObjectWithoutArguments(classForName(className));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public <A> A nuObjectWithoutArguments(Class<A> c) {
    try {
      if (nuObjectWithoutArguments_cache == null)
        return (A) nuObjectWithoutArguments_findConstructor(c).newInstance();
      Constructor m = nuObjectWithoutArguments_cache.get(c);
      if (m == null)
        nuObjectWithoutArguments_cache.put(c, m = nuObjectWithoutArguments_findConstructor(c));
      return (A) m.newInstance();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Constructor nuObjectWithoutArguments_findConstructor(Class c) {
    for (Constructor m : c.getDeclaredConstructors()) if (empty(m.getParameterTypes())) {
      makeAccessible(m);
      return m;
    }
    throw fail("No default constructor found in " + c.getName());
  }

  static public Field makeAccessible(Field f) {
    try {
      f.setAccessible(true);
    } catch (Throwable e) {
      vmBus_send("makeAccessible_error", e, f);
    }
    return f;
  }

  static public Method makeAccessible(Method m) {
    try {
      m.setAccessible(true);
    } catch (Throwable e) {
      vmBus_send("makeAccessible_error", e, m);
    }
    return m;
  }

  static public Constructor makeAccessible(Constructor c) {
    try {
      c.setAccessible(true);
    } catch (Throwable e) {
      vmBus_send("makeAccessible_error", e, c);
    }
    return c;
  }

  static public List<Class> getClasses(Object[] array) {
    List<Class> l = emptyList(l(array));
    for (Object o : array) l.add(_getClass(o));
    return l;
  }

  static public boolean isInstanceX(Class type, Object arg) {
    if (type == boolean.class)
      return arg instanceof Boolean;
    if (type == int.class)
      return arg instanceof Integer;
    if (type == long.class)
      return arg instanceof Long;
    if (type == float.class)
      return arg instanceof Float;
    if (type == short.class)
      return arg instanceof Short;
    if (type == char.class)
      return arg instanceof Character;
    if (type == byte.class)
      return arg instanceof Byte;
    if (type == double.class)
      return arg instanceof Double;
    return type.isInstance(arg);
  }

  static public Runnable asRunnable(Object o) {
    return toRunnable(o);
  }

  static public void _inheritThreadInfo(Object info) {
    _threadInheritInfo(info);
  }

  static public void addMenuItem(JPopupMenu menu, String text, Object action) {
    menu.add(jmenuItem(text, action));
  }

  static public void addMenuItem(JPopupMenu menu, JMenuItem menuItem) {
    menu.add(menuItem);
  }

  static public void addMenuItem(JMenu menu, String text, Object action) {
    menu.add(jmenuItem(text, action));
  }

  static public void addMenuItem(Menu menu, String text, Object action) {
    menu.add(menuItem(text, action));
  }

  static public void addMenuItem(JMenu menu, JMenuItem menuItem) {
    menu.add(menuItem);
  }

  static public void addMenuItem(JMenuBar menuBar, String text, Runnable action) {
    addMenuItem(menuBar, jmenuItem(text, action));
  }

  static public void addMenuItem(JMenuBar menuBar, JMenuItem menuItem) {
    addDirectMenuItem(menuBar, menuItem);
  }

  static public Object vm_generalMap_put(Object key, Object value) {
    return mapPutOrRemove(vm_generalMap(), key, value);
  }

  static public <A> Set<A> newWeakHashSet() {
    return synchroWeakHashSet();
  }

  static public String strUnnull(Object o) {
    return o == null ? "" : str(o);
  }

  static public String jlabel_textAsHTML_center_ifNeeded(String text) {
    if (swic(text, "<html>") && ewic(text, "</html>"))
      return text;
    if (!containsNewLines(text))
      return text;
    return jlabel_textAsHTML_center(text);
  }

  static public void addActionListener(JTextField tf, final Runnable action) {
    onEnter(tf, action);
  }

  static public void addActionListener(final JComboBox cb, final Runnable action) {
    if (cb != null) {
      swing(new Runnable() {

        public void run() {
          try {
            cb.addActionListener(actionListener(action));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "cb.addActionListener(actionListener(action));";
        }
      });
    }
  }

  static public void addActionListener(final AbstractButton b, final Runnable action) {
    if (b != null) {
      swing(new Runnable() {

        public void run() {
          try {
            b.addActionListener(actionListener(action));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "b.addActionListener(actionListener(action));";
        }
      });
    }
  }

  static public String selectedItem(JList l) {
    return getSelectedItem(l);
  }

  static public String selectedItem(JComboBox cb) {
    return getSelectedItem(cb);
  }

  static volatile public boolean licensed_yes = true;

  static public boolean licensed() {
    if (!licensed_yes)
      return false;
    ping_okInCleanUp();
    return true;
  }

  static public void licensed_off() {
    licensed_yes = false;
  }

  static public <A> void listThreadLocalAdd(ThreadLocal<List<A>> tl, A a) {
    List<A> l = tl.get();
    if (l == null)
      tl.set(l = new ArrayList());
    l.add(a);
  }

  static public <A> A listThreadLocalPopLast(ThreadLocal<List<A>> tl) {
    List<A> l = tl.get();
    if (l == null)
      return null;
    A a = popLast(l);
    if (empty(l))
      tl.set(null);
    return a;
  }

  static public String strOrNull(Object o) {
    return o == null ? null : str(o);
  }

  static public <A> List<A> synchroList() {
    return synchroList(new ArrayList<A>());
  }

  static public <A> List<A> synchroList(List<A> l) {
    return Collections.synchronizedList(l);
  }

  static public Throwable printStackTrace2(Throwable e) {
    print(getStackTrace2(e));
    return e;
  }

  static public void printStackTrace2() {
    printStackTrace2(new Throwable());
  }

  static public void printStackTrace2(String msg) {
    printStackTrace2(new Throwable(msg));
  }

  static public Throwable innerException(Throwable e) {
    return getInnerException(e);
  }

  static public boolean domainIsUnder(String domain, String mainDomain) {
    return eqic(domain, mainDomain) || ewic(domain, "." + mainDomain);
  }

  static public String theAGIBlueDomain() {
    return "agi.blue";
  }

  static public File standardLogFile() {
    return getProgramFile("log");
  }

  static public void logQuoted(String logFile, String line) {
    logQuoted(getProgramFile(logFile), line);
  }

  static public void logQuoted(File logFile, String line) {
    appendToFile(logFile, quote(line) + "\n");
  }

  static public JTextArea enableWordWrapForTextArea(JTextArea ta) {
    return enableWordWrapForTextArea(ta, true);
  }

  static public JTextArea enableWordWrapForTextArea(JTextArea ta, boolean enabled) {
    if (ta != null) {
      swing(new Runnable() {

        public void run() {
          try {
            ta.setLineWrap(enabled);
            ta.setWrapStyleWord(true);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "ta.setLineWrap(enabled);\r\n    ta.setWrapStyleWord(true);\r\n    // Haven't foun...";
        }
      });
    }
    return ta;
  }

  static public JTextArea jtextarea() {
    return jTextArea();
  }

  static public JTextArea jtextarea(String text) {
    return jTextArea(text);
  }

  static public <A> A heldInstance(Class<A> c) {
    List<Object> l = holdInstance_l.get();
    for (int i = l(l) - 1; i >= 0; i--) {
      Object o = l.get(i);
      if (isInstanceOf(o, c))
        return (A) o;
    }
    throw fail("No instance of " + className(c) + " held");
  }

  static public float getSwingFontScale() {
    return or((Float) vm_generalMap_get("swingFontScale_value"), 1f);
  }

  static public boolean contains(Collection c, Object o) {
    return c != null && c.contains(o);
  }

  static public boolean contains(Object[] x, Object o) {
    if (x != null)
      for (Object a : x) if (eq(a, o))
        return true;
    return false;
  }

  static public boolean contains(String s, char c) {
    return s != null && s.indexOf(c) >= 0;
  }

  static public boolean contains(String s, String b) {
    return s != null && s.indexOf(b) >= 0;
  }

  static public boolean contains(BitSet bs, int i) {
    return bs != null && bs.get(i);
  }

  static public List vmBus_queryAll(String msg, Object... args) {
    Object arg = vmBus_wrapArgs(args);
    List out = new ArrayList();
    for (Object o : unnullForIteration(vm_busListeners_live())) addIfNotNull(out, pcallF(o, msg, arg));
    for (Object o : unnullForIteration(vm_busListenersByMessage_live().get(msg))) addIfNotNull(out, pcallF(o, msg, arg));
    return out;
  }

  static public int toInt(Object o) {
    if (o == null)
      return 0;
    if (o instanceof Number)
      return ((Number) o).intValue();
    if (o instanceof String)
      return parseInt(((String) o));
    if (o instanceof Boolean)
      return boolToInt(((Boolean) o));
    throw fail("woot not int: " + getClassName(o));
  }

  static public int toInt(long l) {
    if (l != (int) l)
      throw fail("Too large for int: " + l);
    return (int) l;
  }

  static public int toInt_checked(long l) {
    if (l != (int) l)
      throw fail("Too large for int: " + l);
    return (int) l;
  }

  static public double parseDouble(String s) {
    return Double.parseDouble(s);
  }

  static public Throwable getException(Runnable r) {
    try {
      callF(r);
      return null;
    } catch (Throwable e) {
      return e;
    }
  }

  static public Throwable getExceptionCause(Throwable e) {
    Throwable c = e.getCause();
    return c != null ? c : e;
  }

  static public String joinWithSpace(Iterable c) {
    return join(" ", c);
  }

  static public String joinWithSpace(String... c) {
    return join(" ", c);
  }

  static public boolean methodIsStatic(Method m) {
    return (m.getModifiers() & Modifier.STATIC) != 0;
  }

  static public boolean argumentCompatibleWithType(Object arg, Class type) {
    return arg == null ? !type.isPrimitive() : isInstanceX(type, arg);
  }

  static public void arraycopy(Object[] a, Object[] b) {
    if (a != null && b != null)
      arraycopy(a, 0, b, 0, Math.min(a.length, b.length));
  }

  static public void arraycopy(Object src, int srcPos, Object dest, int destPos, int n) {
    if (n != 0)
      System.arraycopy(src, srcPos, dest, destPos, n);
  }

  static public <A> A[] arrayOfType(Class<A> type, int n) {
    return makeArray(type, n);
  }

  static public <A> A[] arrayOfType(int n, Class<A> type) {
    return arrayOfType(type, n);
  }

  public static <A> String join(String glue, Iterable<A> strings) {
    if (strings == null)
      return "";
    if (strings instanceof Collection) {
      if (((Collection) strings).size() == 1)
        return str(first(((Collection) strings)));
    }
    StringBuilder buf = new StringBuilder();
    Iterator<A> i = strings.iterator();
    if (i.hasNext()) {
      buf.append(i.next());
      while (i.hasNext()) buf.append(glue).append(i.next());
    }
    return buf.toString();
  }

  public static String join(String glue, String... strings) {
    return join(glue, Arrays.asList(strings));
  }

  static public <A> String join(Iterable<A> strings) {
    return join("", strings);
  }

  static public <A> String join(Iterable<A> strings, String glue) {
    return join(glue, strings);
  }

  public static String join(String[] strings) {
    return join("", strings);
  }

  static public String join(String glue, Pair p) {
    return p == null ? "" : str(p.a) + glue + str(p.b);
  }

  static public List<String> getClassNames(Collection l) {
    List<String> out = new ArrayList();
    if (l != null)
      for (Object o : l) out.add(o == null ? null : getClassName(o));
    return out;
  }

  static public String actualUserHome_value;

  static public String actualUserHome() {
    if (actualUserHome_value == null) {
      if (isAndroid())
        actualUserHome_value = "/storage/emulated/0/";
      else
        actualUserHome_value = System.getProperty("user.home");
    }
    return actualUserHome_value;
  }

  static public File actualUserHome(String sub) {
    return newFile(new File(actualUserHome()), sub);
  }

  static public String n2(long l) {
    return formatWithThousands(l);
  }

  static public String n2(Collection l) {
    return n2(l(l));
  }

  static public String n2(Map map) {
    return n2(l(map));
  }

  static public String n2(double l, String singular) {
    return n2(l, singular, singular + "s");
  }

  static public String n2(double l, String singular, String plural) {
    if (fraction(l) == 0)
      return n2((long) l, singular, plural);
    else
      return l + " " + plural;
  }

  static public String n2(long l, String singular, String plural) {
    return n_fancy2(l, singular, plural);
  }

  static public String n2(long l, String singular) {
    return n_fancy2(l, singular, singular + "s");
  }

  static public String n2(Collection l, String singular) {
    return n2(l(l), singular);
  }

  static public String n2(Collection l, String singular, String plural) {
    return n_fancy2(l, singular, plural);
  }

  static public String n2(Map m, String singular, String plural) {
    return n_fancy2(m, singular, plural);
  }

  static public String n2(Map m, String singular) {
    return n2(l(m), singular);
  }

  static public String n2(long[] a, String singular) {
    return n2(l(a), singular);
  }

  static public String n2(Object[] a, String singular) {
    return n2(l(a), singular);
  }

  static public String n2(Object[] a, String singular, String plural) {
    return n_fancy2(a, singular, plural);
  }

  static public String n2(MultiSet ms, String singular, String plural) {
    return n_fancy2(ms, singular, plural);
  }

  static public List collect(Iterable c, String field) {
    return collectField(c, field);
  }

  static public List collect(String field, Iterable c) {
    return collectField(c, field);
  }

  static public void sleepInCleanUp(long ms) {
    try {
      if (ms < 0)
        return;
      Thread.sleep(ms);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String f2s(File f) {
    return f == null ? null : f.getAbsolutePath();
  }

  static public String f2s(String s) {
    return f2s(newFile(s));
  }

  static public String f2s(java.nio.file.Path p) {
    return p == null ? null : f2s(p.toFile());
  }

  static public void copyStream(InputStream in, OutputStream out) {
    try {
      byte[] buf = new byte[65536];
      while (true) {
        int n = in.read(buf);
        if (n <= 0)
          return;
        out.write(buf, 0, n);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void _registerIO(Object object, String path, boolean opened) {
  }

  static public boolean endsWithIgnoreCase(String a, String b) {
    int la = l(a), lb = l(b);
    return la >= lb && regionMatchesIC(a, la - lb, b, 0, lb);
  }

  static public boolean endsWithIgnoreCase(String a, String b, Matches m) {
    if (!endsWithIgnoreCase(a, b))
      return false;
    if (m != null)
      m.m = new String[] { substring(a, 0, l(a) - l(b)) };
    return true;
  }

  static public BufferedReader bufferedReader(Reader r) {
    return bufferedReader(r, 8192);
  }

  static public BufferedReader bufferedReader(Reader r, int bufSize) {
    if (r == null)
      return null;
    return r instanceof BufferedReader ? (BufferedReader) r : _registerIOWrap(new BufferedReader(r, bufSize), r);
  }

  static public <A extends AutoCloseable> A holdResource(IResourceHolder holder, A a) {
    {
      if (holder != null)
        holder.add(a);
    }
    return a;
  }

  static public <A> CloseableIterableIterator<A> iteratorFromFunction_f0_autoCloseable(final F0<A> f, final AutoCloseable closeable) {
    class IFF2 extends CloseableIterableIterator<A> {

      public A a;

      public boolean done = false;

      public boolean hasNext() {
        getNext();
        return !done;
      }

      public A next() {
        getNext();
        if (done)
          throw fail();
        A _a = a;
        a = null;
        return _a;
      }

      public void getNext() {
        if (done || a != null)
          return;
        a = f.get();
        done = a == null;
      }

      public void close() throws Exception {
        if (closeable != null)
          closeable.close();
      }
    }
    ;
    return new IFF2();
  }

  static public String readLineFromReaderWithClose(BufferedReader r) {
    try {
      String s = r.readLine();
      if (s == null)
        r.close();
      return s;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public AutoCloseable _wrapIOCloseable(final AutoCloseable c) {
    return c == null ? null : new AutoCloseable() {

      public String toString() {
        return "c.close();\r\n    _registerIO(c, null, false);";
      }

      public void close() throws Exception {
        c.close();
        _registerIO(c, null, false);
      }
    };
  }

  static public <A> A _registerIOWrap(A wrapper, Object wrapped) {
    return wrapper;
  }

  static public FileInputStream newFileInputStream(File path) throws IOException {
    return newFileInputStream(path.getPath());
  }

  static public FileInputStream newFileInputStream(String path) throws IOException {
    FileInputStream f = new FileInputStream(path);
    _registerIO(f, path, true);
    return f;
  }

  static public int gzInputStream_defaultBufferSize = 65536;

  static public GZIPInputStream gzInputStream(File f) {
    try {
      return gzInputStream(new FileInputStream(f));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public GZIPInputStream gzInputStream(File f, int bufferSize) {
    try {
      return gzInputStream(new FileInputStream(f), bufferSize);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public GZIPInputStream gzInputStream(InputStream in) {
    return gzInputStream(in, gzInputStream_defaultBufferSize);
  }

  static public GZIPInputStream gzInputStream(InputStream in, int bufferSize) {
    try {
      return _registerIOWrap(new GZIPInputStream(in, gzInputStream_defaultBufferSize), in);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Iterator emptyIterator() {
    return Collections.emptyIterator();
  }

  static public <A> A[] newObjectArrayOfSameType(A[] a) {
    return newObjectArrayOfSameType(a, a.length);
  }

  static public <A> A[] newObjectArrayOfSameType(A[] a, int n) {
    return (A[]) Array.newInstance(a.getClass().getComponentType(), n);
  }

  static public Map<String, Pair<String, Map<String, String>>> mechMapCI_cache = synchroMap();

  static public Map<String, String> mechMapCI(String listName) {
    Pair<String, Map<String, String>> p = mechMapCI_cache.get(listName);
    String text = mechList_raw(listName);
    if (p != null && eq(p.a, text))
      return p.b;
    String parsing = first(mechList_opt(listName + " | Parsing"));
    Map<String, String> map;
    if (parsing == null)
      map = parseDoubleArrowMapCI(tlft(text));
    else
      map = asCIMap((Map<String, String>) callMC(parsing, text));
    p = pair(text, map);
    mechMapCI_cache.put(listName, p);
    return p.b;
  }

  static public String className(Object o) {
    return getClassName(o);
  }

  static public boolean eqOneOf(Object o, Object... l) {
    for (Object x : l) if (eq(o, x))
      return true;
    return false;
  }

  static public String formatSnippetIDOpt(String s) {
    return isSnippetID(s) ? formatSnippetID(s) : s;
  }

  static public String formatSnippetID(String id) {
    return "#" + parseSnippetID(id);
  }

  static public String formatSnippetID(long id) {
    return "#" + id;
  }

  static public Class getMainClass() {
    return mc();
  }

  static public Class getMainClass(Object o) {
    try {
      if (o == null)
        return null;
      if (o instanceof Class && eq(((Class) o).getName(), "x30"))
        return (Class) o;
      ClassLoader cl = (o instanceof Class ? (Class) o : o.getClass()).getClassLoader();
      if (cl == null)
        return null;
      String name = mainClassNameForClassLoader(cl);
      return loadClassFromClassLoader_orNull(cl, name);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String botAppendToMechList_uniqCI(String name, String text) {
    return botAppendToMechList_mode(name, text, "uniqCI");
  }

  static public String botAppendToMechList_uniqCI(String name, Collection<String> lines) {
    return botAppendToMechList_mode(name, lines, "uniqCI");
  }

  static public String lines(Iterable lines) {
    return fromLines(lines);
  }

  static public String lines(Object[] lines) {
    return fromLines(asList(lines));
  }

  static public List<String> lines(String s) {
    return toLines(s);
  }

  static public <A> String lines(Iterable<A> l, IF1<A, String> f) {
    return mapToLines(l, f);
  }

  static public List mapMapToList(Map map, Object f) {
    return map(map, f);
  }

  static public List mapMapToList(Object f, Map map) {
    return map(f, map);
  }

  static public Map<String, String> parseDoubleLeftArrowMapCI_tlft(String s) {
    return parseDoubleLeftArrowMapCI(tlft(s));
  }

  static public <A, B> Map<A, B> weakHashMap() {
    return newWeakHashMap();
  }

  static public <A, B> List<A> keysList(Map<A, B> map) {
    return cloneListSynchronizingOn(keys(map), map);
  }

  static public <A> List<A> keysList(MultiSet<A> ms) {
    return ms == null ? null : keysList(ms.map);
  }

  static public <A> List<A> immutableEmptyList() {
    return Collections.emptyList();
  }

  static public <A, B> Map<A, B> immutableEmptyMap() {
    return Collections.emptyMap();
  }

  static public boolean isJavaIdentifier(String s) {
    if (empty(s) || !Character.isJavaIdentifierStart(s.charAt(0)))
      return false;
    for (int i = 1; i < s.length(); i++) if (!Character.isJavaIdentifierPart(s.charAt(i)))
      return false;
    return true;
  }

  static public boolean isInteger(String s) {
    int n = l(s);
    if (n == 0)
      return false;
    int i = 0;
    if (s.charAt(0) == '-')
      if (++i >= n)
        return false;
    while (i < n) {
      char c = s.charAt(i);
      if (c < '0' || c > '9')
        return false;
      ++i;
    }
    return true;
  }

  static public Map vm_generalMap_map;

  static public Map vm_generalMap() {
    if (vm_generalMap_map == null)
      vm_generalMap_map = (Map) get(javax(), "generalMap");
    return vm_generalMap_map;
  }

  static public Map synchroHashMap() {
    return synchronizedMap(new HashMap());
  }

  static public Class<?> _getClass(String name) {
    try {
      return Class.forName(name);
    } catch (ClassNotFoundException e) {
      return null;
    }
  }

  static public Class _getClass(Object o) {
    return o == null ? null : o instanceof Class ? (Class) o : o.getClass();
  }

  static public Class _getClass(Object realm, String name) {
    try {
      return classLoaderForObject(realm).loadClass(classNameToVM(name));
    } catch (ClassNotFoundException e) {
      return null;
    }
  }

  static public boolean jmenuItem_newThreads = false;

  static public JMenuItem jmenuItem(final String text) {
    return jMenuItem(text, null);
  }

  static public JMenuItem jmenuItem(final String text, final Object r) {
    return swing(new F0<JMenuItem>() {

      public JMenuItem get() {
        try {
          Pair<String, Integer> p = jmenu_autoMnemonic(dropPrefix("[disabled] ", text));
          JMenuItem mi = new JMenuItem(p.a);
          if (startsWith(text, "[disabled] "))
            disableMenuItem(mi);
          if (p.b != 0)
            mi.setMnemonic(p.b);
          mi.addActionListener(jmenuItem_newThreads ? actionListenerInNewThread(r) : actionListener(r));
          return mi;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "Pair<S, Int> p = jmenu_autoMnemonic(dropPrefix(\"[disabled] \", text));\r\n    JM...";
      }
    });
  }

  static public MenuItem menuItem(String text, final Object r) {
    MenuItem mi = new MenuItem(text);
    mi.addActionListener(actionListener(r));
    return mi;
  }

  static public void addDirectMenuItem(JMenuBar mb, String text, Object action) {
    if (mb != null) {
      swing(new Runnable() {

        public void run() {
          try {
            addDirectMenuItem(mb, directJMenuItem(text, action));
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "addDirectMenuItem(mb, directJMenuItem(text, action));";
        }
      });
    }
  }

  static public void addDirectMenuItem(Component c, String text, Object action) {
    addDirectMenuItem(addMenuBar(c), text, action);
  }

  static public void addDirectMenuItem(JMenuBar mb, JMenuItem menuItem) {
    if (mb != null) {
      swing(new Runnable() {

        public void run() {
          try {
            mb.add(menuItem);
            revalidate(mb);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "mb.add(menuItem);\r\n    revalidate(mb);";
        }
      });
    }
  }

  static public <A, B> B mapPutOrRemove(Map<A, B> map, A key, B value) {
    if (map != null && key != null)
      if (value != null)
        return map.put(key, value);
      else
        return map.remove(key);
    return null;
  }

  static public <A> Set<A> synchroWeakHashSet() {
    return Collections.newSetFromMap((Map) newWeakHashMap());
  }

  static public boolean swic(String a, String b) {
    return startsWithIgnoreCase(a, b);
  }

  static public boolean swic(String a, String b, Matches m) {
    if (!swic(a, b))
      return false;
    m.m = new String[] { substring(a, l(b)) };
    return true;
  }

  static public boolean containsNewLines(String s) {
    return containsNewLine(s);
  }

  static public String jlabel_textAsHTML_center(String text) {
    return "<html><div style=\"text-align: center;\">" + replace(htmlencode2(text), "\n", "<br>") + "</div></html>";
  }

  static public <A> A popLast(List<A> l) {
    return liftLast(l);
  }

  static public <A> List<A> popLast(int n, List<A> l) {
    return liftLast(n, l);
  }

  static public String getStackTrace2(Throwable e) {
    return hideCredentials(getStackTrace(unwrapTrivialExceptionWraps(e)) + replacePrefix("java.lang.RuntimeException: ", "FAIL: ", hideCredentials(str(innerException2(e)))) + "\n");
  }

  static public boolean eqic(String a, String b) {
    if ((a == null) != (b == null))
      return false;
    if (a == null)
      return true;
    return a.equalsIgnoreCase(b);
  }

  static public boolean eqic(char a, char b) {
    if (a == b)
      return true;
    char u1 = Character.toUpperCase(a);
    char u2 = Character.toUpperCase(b);
    if (u1 == u2)
      return true;
    return Character.toLowerCase(u1) == Character.toLowerCase(u2);
  }

  static public File getProgramFile(String progID, String fileName) {
    if (new File(fileName).isAbsolute())
      return new File(fileName);
    return new File(getProgramDir(progID), fileName);
  }

  static public File getProgramFile(String fileName) {
    return getProgramFile(getProgramID(), fileName);
  }

  static public Lock appendToFile_lock = lock();

  static public boolean appendToFile_keepOpen = false;

  static public HashMap<String, Writer> appendToFile_writers = new HashMap();

  static public void appendToFile(String path, String s) {
    try {
      Lock __0 = appendToFile_lock;
      lock(__0);
      try {
        mkdirsForFile(new File(path));
        path = getCanonicalPath(path);
        Writer writer = appendToFile_writers.get(path);
        if (writer == null) {
          writer = new BufferedWriter(new OutputStreamWriter(newFileOutputStream(path, true), "UTF-8"));
          if (appendToFile_keepOpen)
            appendToFile_writers.put(path, writer);
        }
        writer.write(s);
        if (!appendToFile_keepOpen)
          writer.close();
      } finally {
        unlock(__0);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void appendToFile(File path, String s) {
    if (path != null)
      appendToFile(path.getPath(), s);
  }

  static public void cleanMeUp_appendToFile() {
    AutoCloseable __3 = tempCleaningUp();
    try {
      Lock __1 = appendToFile_lock;
      lock(__1);
      try {
        closeAllWriters(values(appendToFile_writers));
        appendToFile_writers.clear();
      } finally {
        unlock(__1);
      }
    } finally {
      _close(__3);
    }
  }

  static public JTextArea jTextArea() {
    return jTextArea("");
  }

  static public JTextArea jTextArea(final String text) {
    return jTextAreaWithUndo(text);
  }

  static public boolean isInstanceOf(Object o, Class type) {
    return type.isInstance(o);
  }

  static public int parseInt(String s) {
    return emptyString(s) ? 0 : Integer.parseInt(s);
  }

  static public int parseInt(char c) {
    return Integer.parseInt(str(c));
  }

  static public int boolToInt(boolean b) {
    return b ? 1 : 0;
  }

  static public <A> A[] makeArray(Class<A> type, int n) {
    return (A[]) Array.newInstance(type, n);
  }

  static public Object first(Object list) {
    return first((Iterable) list);
  }

  static public <A> A first(List<A> list) {
    return empty(list) ? null : list.get(0);
  }

  static public <A> A first(A[] bla) {
    return bla == null || bla.length == 0 ? null : bla[0];
  }

  static public <A> A first(IterableIterator<A> i) {
    return first((Iterator<A>) i);
  }

  static public <A> A first(Iterator<A> i) {
    return i == null || !i.hasNext() ? null : i.next();
  }

  static public <A> A first(Iterable<A> i) {
    if (i == null)
      return null;
    Iterator<A> it = i.iterator();
    return it.hasNext() ? it.next() : null;
  }

  static public Character first(String s) {
    return empty(s) ? null : s.charAt(0);
  }

  static public Character first(CharSequence s) {
    return empty(s) ? null : s.charAt(0);
  }

  static public <A, B> A first(Pair<A, B> p) {
    return p == null ? null : p.a;
  }

  static public Byte first(byte[] l) {
    return empty(l) ? null : l[0];
  }

  static public String formatWithThousands(long l) {
    return formatWithThousandsSeparator(l);
  }

  static public double fraction(double d) {
    return d % 1;
  }

  static public String n_fancy2(long l, String singular, String plural) {
    return formatWithThousandsSeparator(l) + " " + trim(l == 1 ? singular : plural);
  }

  static public String n_fancy2(Collection l, String singular, String plural) {
    return n_fancy2(l(l), singular, plural);
  }

  static public String n_fancy2(Map m, String singular, String plural) {
    return n_fancy2(l(m), singular, plural);
  }

  static public String n_fancy2(Object[] a, String singular, String plural) {
    return n_fancy2(l(a), singular, plural);
  }

  static public String n_fancy2(MultiSet ms, String singular, String plural) {
    return n_fancy2(l(ms), singular, plural);
  }

  static public List collectField(Iterable c, String field) {
    List l = new ArrayList();
    if (c != null)
      for (Object a : c) l.add(getOpt(a, field));
    return l;
  }

  static public List collectField(String field, Iterable c) {
    return collectField(c, field);
  }

  static public boolean regionMatchesIC(String a, int offsetA, String b, int offsetB, int len) {
    return a != null && a.regionMatches(true, offsetA, b, offsetB, len);
  }

  static public Map synchroMap() {
    return synchroHashMap();
  }

  static public <A, B> Map<A, B> synchroMap(Map<A, B> map) {
    return Collections.synchronizedMap(map);
  }

  static public ExpiringMap2<String, String> mechList_raw_cache = new ExpiringMap2(10000).setMap(ciMap());

  static public Lock mechList_raw_lock = lock();

  static public int mechList_raw_timeout = 60000;

  static public String mechList_raw(String name) {
    try {
      Lock __0 = mechList_raw_lock;
      lock(__0);
      try {
        if (empty(name))
          return "";
        String src = mechList_raw_cache.get(name);
        if (src != null)
          return src;
        src = mechList_raw_fresh(name);
        if (src != null)
          mechList_raw_cache.put(name, src);
        return src;
      } finally {
        unlock(__0);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void _onLoad_mechList_raw() {
    ownResource(vmBus_onMessage("mechChange", listName -> mechList_raw_cache.remove((String) listName)));
  }

  static public List<String> mechList_opt(String name) {
    return mechList_opt_tlft(name);
  }

  static public Map<String, String> parseDoubleArrowMapCI(List<String> l) {
    return parseDoubleArrowMap((Map) ciMap(), l);
  }

  static public Map<String, String> parseDoubleArrowMapCI(String s) {
    return parseDoubleArrowMapCI_tlft(s);
  }

  static public List<String> tlft(String s) {
    return toLinesFullTrim(s);
  }

  static public List<String> tlft(File f) {
    return toLinesFullTrim(f);
  }

  static public <B> TreeMap<String, B> asCIMap(Map<String, B> map) {
    return asCaseInsensitiveMap(map);
  }

  public static boolean isSnippetID(String s) {
    try {
      parseSnippetID(s);
      return true;
    } catch (RuntimeException e) {
      return false;
    }
  }

  public static long parseSnippetID(String snippetID) {
    long id = Long.parseLong(shortenSnippetID(snippetID));
    if (id == 0)
      throw fail("0 is not a snippet ID");
    return id;
  }

  static public String mainClassNameForClassLoader(ClassLoader cl) {
    return or((String) callOpt(cl, "mainClassName"), "main");
  }

  static public Class loadClassFromClassLoader_orNull(ClassLoader cl, String name) {
    try {
      return cl == null ? null : cl.loadClass(name);
    } catch (ClassNotFoundException e) {
      return null;
    }
  }

  static public String botAppendToMechList_mode(String name, String text, String mode) {
    if (empty(name) || empty(text))
      return "";
    String result = postPageSilently("http://butter.botcompany.de:8080/mech/raw/bot-list-append", arrayPlus(muricaCredentials(), "name", name, "text", text, "mode", mode));
    if (!swic(result, "No change")) {
      if (eq(mechMode().readMode, "localCopies")) {
        print("Appending to local list copy: " + name);
        appendToLocalMechListCopy(name, text);
      }
      mech_notifyBusOfChange(name);
      mechList_clearCache(name);
    }
    return result;
  }

  static public String botAppendToMechList_mode(String name, Collection<String> lines, String mode) {
    if (empty(lines))
      return "";
    return botAppendToMechList_mode(name, lines(lines), mode);
  }

  static public List<String> mapToLines(Map map) {
    List<String> l = new ArrayList();
    for (Object key : keys(map)) l.add(str(key) + " = " + str(map.get(key)));
    return l;
  }

  static public String mapToLines(Map map, Object f) {
    return lines(map(map, f));
  }

  static public String mapToLines(Object f, Map map) {
    return lines(map(map, f));
  }

  static public String mapToLines(Object f, Iterable l) {
    return lines(map(f, l));
  }

  static public <A> String mapToLines(Iterable<A> l, IF1<A, String> f) {
    return mapToLines((Object) f, l);
  }

  static public <A> String mapToLines(IF1<A, String> f, Iterable<A> l) {
    return mapToLines((Object) f, l);
  }

  static public <A, B> String mapToLines(Map<A, B> map, IF2<A, B, String> f) {
    return lines(map(map, f));
  }

  static public List map(Iterable l, Object f) {
    return map(f, l);
  }

  static public List map(Object f, Iterable l) {
    List x = emptyList(l);
    if (l != null)
      for (Object o : l) {
        ping();
        x.add(callF(f, o));
      }
    return x;
  }

  static public <A, B> List<B> map(Iterable<A> l, F1<A, B> f) {
    return map(f, l);
  }

  static public <A, B> List<B> map(F1<A, B> f, Iterable<A> l) {
    List x = emptyList(l);
    if (l != null)
      for (A o : l) {
        ping();
        x.add(callF(f, o));
      }
    return x;
  }

  static public <A, B> List<B> map(IF1<A, B> f, Iterable<A> l) {
    return map(l, f);
  }

  static public <A, B> List<B> map(Iterable<A> l, IF1<A, B> f) {
    List x = emptyList(l);
    if (l != null)
      for (A o : l) {
        ping();
        x.add(f.get(o));
      }
    return x;
  }

  static public <A, B> List<B> map(IF1<A, B> f, A[] l) {
    return map(l, f);
  }

  static public <A, B> List<B> map(A[] l, IF1<A, B> f) {
    List x = emptyList(l);
    if (l != null)
      for (A o : l) {
        ping();
        x.add(f.get(o));
      }
    return x;
  }

  static public List map(Object f, Object[] l) {
    return map(f, asList(l));
  }

  static public List map(Object[] l, Object f) {
    return map(f, l);
  }

  static public List map(Object f, Map map) {
    return map(map, f);
  }

  static public List map(Map map, Object f) {
    List x = new ArrayList();
    if (map != null)
      for (Object _e : map.entrySet()) {
        ping();
        Map.Entry e = (Map.Entry) _e;
        x.add(callF(f, e.getKey(), e.getValue()));
      }
    return x;
  }

  static public <A, B, C> List<C> map(Map<A, B> map, IF2<A, B, C> f) {
    return map(map, (Object) f);
  }

  static public Map<String, String> parseDoubleLeftArrowMapCI(List<String> l) {
    return parseDoubleLeftArrowMap((Map) ciMap(), l);
  }

  static public <A> ArrayList<A> cloneListSynchronizingOn(Collection<A> l, Object mutex) {
    if (l == null)
      return new ArrayList();
    synchronized (mutex) {
      return new ArrayList<A>(l);
    }
  }

  static public <A, B> Set<A> keys(Map<A, B> map) {
    return map == null ? new HashSet() : map.keySet();
  }

  static public Set keys(Object map) {
    return keys((Map) map);
  }

  static public <A> Set<A> keys(MultiSet<A> ms) {
    return ms.keySet();
  }

  static public Map synchronizedMap() {
    return synchroMap();
  }

  static public <A, B> Map<A, B> synchronizedMap(Map<A, B> map) {
    return synchroMap(map);
  }

  static public ClassLoader classLoaderForObject(Object o) {
    if (o instanceof ClassLoader)
      return ((ClassLoader) o);
    if (o == null)
      return null;
    return _getClass(o).getClassLoader();
  }

  static public String classNameToVM(String name) {
    return name.replace(".", "$");
  }

  static public JMenuItem jMenuItem(final String text) {
    return jmenuItem(text);
  }

  static public JMenuItem jMenuItem(String text, Object r) {
    return jmenuItem(text, r);
  }

  static public Pair<String, Integer> jmenu_autoMnemonic(String s) {
    int i = indexOf(s, '&');
    if (i >= 0 && i < l(s) && isLetterOrDigit(s.charAt(i + 1)))
      return pair(substring(s, 0, i) + substring(s, i + 1), (int) s.charAt(i + 1));
    return pair(s, 0);
  }

  static public JMenuItem disableMenuItem(final JMenuItem mi) {
    if (mi != null) {
      swing(new Runnable() {

        public void run() {
          try {
            mi.setEnabled(false);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "mi.setEnabled(false);";
        }
      });
    }
    return mi;
  }

  static public ActionListener actionListenerInNewThread(final Object runnable) {
    return actionListenerInNewThread(runnable, null);
  }

  static public ActionListener actionListenerInNewThread(final Object runnable, final Object instanceToHold) {
    if (runnable instanceof ActionListener)
      return (ActionListener) runnable;
    return new java.awt.event.ActionListener() {

      public void actionPerformed(java.awt.event.ActionEvent _evt) {
        try {
          startThread("Action Listener", new Runnable() {

            public void run() {
              try {
                AutoCloseable __1 = holdInstance(instanceToHold);
                try {
                  callF(runnable);
                } finally {
                  _close(__1);
                }
              } catch (Exception __e) {
                throw rethrow(__e);
              }
            }

            public String toString() {
              return "AutoCloseable __1 = holdInstance(instanceToHold); try {\r\n      callF(runnable...";
            }
          });
        } catch (Throwable __e) {
          messageBox(__e);
        }
      }
    };
  }

  static public JMenuItem directJMenuItem(Action a) {
    return new JMenuItem(a) {

      public Dimension getMaximumSize() {
        return new Dimension(super.getPreferredSize().width, super.getMaximumSize().height);
      }
    };
  }

  static public JMenuItem directJMenuItem(String text, Object action) {
    return directJMenuItem(abstractAction(text, action));
  }

  static public JMenuBar addMenuBar(final Component c) {
    return swing(new F0<JMenuBar>() {

      public JMenuBar get() {
        try {
          RootPaneContainer f = getPossiblyInternalFrame(c);
          if (f == null)
            return null;
          JMenuBar bar = (JMenuBar) (call(f, "getJMenuBar"));
          if (bar == null) {
            setMenuBar(f, bar = new JMenuBar());
            revalidate((Component) f);
          }
          return bar;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "RootPaneContainer f = getPossiblyInternalFrame(c);\r\n    if (f == null) null;\r...";
      }
    });
  }

  static public <A extends Component> A revalidate(final A c) {
    if (c == null || !c.isShowing())
      return c;
    {
      swing(new Runnable() {

        public void run() {
          try {
            c.revalidate();
            c.repaint();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "// magic combo to actually relayout and repaint\r\n    c.revalidate();\r\n    c.r...";
        }
      });
    }
    return c;
  }

  static public void revalidate(JFrame f) {
    revalidate((Component) f);
  }

  static public void revalidate(JInternalFrame f) {
    revalidate((Component) f);
  }

  static public boolean startsWithIgnoreCase(String a, String b) {
    return regionMatchesIC(a, 0, b, 0, b.length());
  }

  static public boolean containsNewLine(String s) {
    return contains(s, '\n');
  }

  static public <A> List<A> replace(List<A> l, A a, A b) {
    for (int i = 0; i < l(l); i++) if (eq(l.get(i), a))
      l.set(i, b);
    return l;
  }

  static public <A> List<A> replace(A a, A b, List<A> l) {
    return replace(l, a, b);
  }

  static public String replace(String s, String a, String b) {
    return s == null ? null : a == null || b == null ? s : s.replace(a, b);
  }

  static public String replace(String s, char a, char b) {
    return s == null ? null : s.replace(a, b);
  }

  static public String htmlencode2(String s) {
    return htmlencode_noQuotes(s);
  }

  static public <A> A liftLast(List<A> l) {
    if (empty(l))
      return null;
    int i = l(l) - 1;
    A a = l.get(i);
    l.remove(i);
    return a;
  }

  static public <A> List<A> liftLast(int n, List<A> l) {
    int i = l(l) - n;
    List<A> part = cloneSubList(l, i);
    removeSubList(l, i);
    return part;
  }

  static public Throwable unwrapTrivialExceptionWraps(Throwable e) {
    if (e == null)
      return e;
    while (e.getClass() == RuntimeException.class && e.getCause() != null && eq(e.getMessage(), str(e.getCause()))) e = e.getCause();
    return e;
  }

  static public String replacePrefix(String prefix, String replacement, String s) {
    if (!startsWith(s, prefix))
      return s;
    return replacement + substring(s, l(prefix));
  }

  static public String asString(Object o) {
    return o == null ? null : o.toString();
  }

  static public File getProgramDir() {
    return programDir();
  }

  static public File getProgramDir(String snippetID) {
    return programDir(snippetID);
  }

  static public String getCanonicalPath(File f) {
    try {
      return f == null ? null : f.getCanonicalPath();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String getCanonicalPath(String path) {
    return getCanonicalPath(newFile(path));
  }

  static public AutoCloseable tempCleaningUp() {
    return tempSetTL(ping_isCleanUpThread, true);
  }

  static public void closeAllWriters(Collection<? extends Writer> l) {
    for (Writer w : unnull(l)) {
      try {
        w.close();
      } catch (Throwable __e) {
        _handleException(__e);
      }
    }
  }

  static public <A, B> Collection<B> values(Map<A, B> map) {
    return map == null ? emptyList() : map.values();
  }

  static public Collection values(Object map) {
    return values((Map) map);
  }

  static public JTextArea jTextAreaWithUndo() {
    return jTextAreaWithUndo("");
  }

  static public JTextArea jTextAreaWithUndo(final String text) {
    return jenableUndoRedo(swingNu(JTextArea.class, text));
  }

  static public boolean emptyString(String s) {
    return s == null || s.length() == 0;
  }

  static public String formatWithThousandsSeparator(long l) {
    return NumberFormat.getInstance(new Locale("en_US")).format(l);
  }

  static public <A> TreeMap<String, A> ciMap() {
    return caseInsensitiveMap();
  }

  static public String mechList_raw_fresh(String name) {
    return mechList_opt_raw_fresh(name);
  }

  static public <A> AutoCloseable vmBus_onMessage(String msg, IVF1<A> onMessage) {
    return vmBus_onMessage(msg, ivf1ToVF1(onMessage));
  }

  static public <A> AutoCloseable vmBus_onMessage(final String msg, final VF1<A> onMessage) {
    Map<String, Set> map = vm_busListenersByMessage_live();
    synchronized (map) {
      Set listeners = map.get(msg);
      if (listeners == null)
        map.put(msg, listeners = syncIdentityHashSet());
      return tempAdd(listeners, new VF2<String, Object>() {

        public void get(String _msg, Object arg) {
          try {
            callF(onMessage, arg);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "callF(onMessage, arg)";
        }
      });
    }
  }

  static public <A, B> AutoCloseable vmBus_onMessage(String msg, final VF2<A, B> onMessage) {
    return vmBus_onMessage(msg, new VF1<Object[]>() {

      public void get(Object[] o) {
        try {
          callF(onMessage, first(o), second(o));
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "callF(onMessage, first(o), second(o));";
      }
    });
  }

  static public <A, B> AutoCloseable vmBus_onMessage(String msg, final IVF2<A, B> onMessage) {
    return vmBus_onMessage(msg, new VF1<Object[]>() {

      public void get(Object[] o) {
        try {
          callF(onMessage, first(o), second(o));
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "callF(onMessage, first(o), second(o));";
      }
    });
  }

  static public AutoCloseable vmBus_onMessage(String msg, Runnable onMessage) {
    return vmBus_onMessage(msg, runnableToVF1(onMessage));
  }

  static public List<String> mechList_opt_tlft(String name) {
    return mechList_opt_tlft_cached(name);
  }

  static public Map<String, String> parseDoubleArrowMap(Map<String, String> map, List<String> l) {
    for (String s : l) {
      List<String> x = splitAtDoubleArrow_bothDirections(s);
      if (l(x) == 2)
        map.put(first(x), second(x));
    }
    return map;
  }

  static public Map<String, String> parseDoubleArrowMapCI_tlft(String s) {
    return parseDoubleArrowMapCI(tlft(s));
  }

  static public List<String> toLinesFullTrim(String s) {
    List<String> l = new ArrayList();
    for (String line : toLines(s)) if (nempty(line = trim(line)))
      l.add(line);
    return l;
  }

  static public List<String> toLinesFullTrim(File f) {
    List<String> l = new ArrayList();
    for (String line : linesFromFile(f)) if (nempty(line = trim(line)))
      l.add(line);
    return l;
  }

  static public <B> TreeMap<String, B> asCaseInsensitiveMap(Map<String, B> map) {
    if (isCIMap(map))
      return (TreeMap) map;
    TreeMap<String, B> m = ciMap();
    putAll(m, map);
    return m;
  }

  static public String shortenSnippetID(String snippetID) {
    if (snippetID.startsWith("#"))
      snippetID = snippetID.substring(1);
    String httpBlaBla = "http://tinybrain.de/";
    if (snippetID.startsWith(httpBlaBla))
      snippetID = snippetID.substring(httpBlaBla.length());
    return "" + parseLong(snippetID);
  }

  static public MechMode mechMode_value = new MechMode();

  static public MechMode mechMode() {
    return mechMode_value;
  }

  static public <A> List<A> listMinusSet(Iterable<A> l, Collection<? extends A> stuff) {
    if (l == null)
      return null;
    if (empty(stuff))
      return asList(l);
    Set<? extends A> set = asSet(stuff);
    List<A> l2 = new ArrayList();
    for (A a : l) if (!set.contains(a))
      l2.add(a);
    return l2;
  }

  static public <A> List<A> listMinusSet(Iterable<A> l, Collection<A> stuff, Collection<? extends A> stuff2) {
    return listMinusSet(listMinusSet(l, stuff), stuff2);
  }

  static public TreeSet<String> asCISet(Iterable<String> c) {
    return toCaseInsensitiveSet(c);
  }

  static public TreeSet<String> asCISet(String... x) {
    return toCaseInsensitiveSet(x);
  }

  static public void mech_notifyBusOfChange(String listName) {
    vmBus_send("mechChange", listName);
  }

  static public ThreadLocal<Boolean> mechList_clearCache_inFunction = new ThreadLocal();

  static public void mechList_clearCache(String listName) {
    {
      AutoCloseable __1 = tempSetTL(mechList_clearCache_inFunction, true);
      try {
        print("Sending mech clear: " + listName);
        vmBus_send("mechList_clearCache", listName);
      } finally {
        _close(__1);
      }
    }
    mechList_clearCache_noSend(listName);
  }

  static public void mechList_clearCache_noSend(String listName) {
    for (String field : mcFields()) if (startsWithEndsWith(field, "mech", "_cache")) {
      Object o = getOptMC(field);
      if (o instanceof Map)
        removeFromMapCI_sync((Map) o, listName);
    }
  }

  static public String postPageSilently(String url, Object... params) {
    return doPostSilently(litmap(params), url);
  }

  static public Object[] arrayPlus(Object[] a1, Object... a2) {
    return concatArrays(a1, a2);
  }

  static public Object[] muricaCredentials() {
    String pass = muricaPassword();
    return nempty(pass) ? new Object[] { "_pass", pass } : new Object[0];
  }

  static public void appendToLocalMechListCopy(String listName, String text) {
    appendToTextFile(remoteMechListMirrorFile(listName), "\n" + text);
  }

  static public Map<String, String> parseDoubleLeftArrowMap(Map<String, String> map, List<String> l) {
    for (String s : l) {
      List<String> x = splitAtDoubleLeftArrow(s);
      if (l(x) == 2)
        map.put(second(x), first(x));
    }
    return map;
  }

  static public boolean isLetterOrDigit(char c) {
    return Character.isLetterOrDigit(c);
  }

  static public RootPaneContainer getPossiblyInternalFrame(Component c) {
    JInternalFrame f = getInternalFrame(c);
    if (f != null)
      return f;
    return optCast(RootPaneContainer.class, getWindow(c));
  }

  static public void setMenuBar(final JMenuBar mb, final RootPaneContainer f) {
    {
      swing(new Runnable() {

        public void run() {
          try {
            call(f, "setJMenuBar", mb);
            revalidate((Component) f);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "call(f, \"setJMenuBar\", mb);\r\n    revalidate((Component) f);";
        }
      });
    }
  }

  static public void setMenuBar(RootPaneContainer f, JMenuBar mb) {
    setMenuBar(mb, f);
  }

  static public String htmlencode_noQuotes(String s) {
    if (s == null)
      return "";
    StringBuilder out = new StringBuilder(Math.max(16, s.length()));
    for (int i = 0; i < s.length(); i++) {
      char c = s.charAt(i);
      if (c == '<')
        out.append("&lt;");
      else if (c == '>')
        out.append("&gt;");
      else if (c > 127 || c == '&') {
        int cp = s.codePointAt(i);
        out.append("&#x");
        out.append(intToHex_flexLength(cp));
        out.append(';');
        i += Character.charCount(cp) - 1;
      } else
        out.append(c);
    }
    return out.toString();
  }

  static public <A> List<A> cloneSubList(List<A> l, int startIndex, int endIndex) {
    return newSubList(l, startIndex, endIndex);
  }

  static public <A> List<A> cloneSubList(List<A> l, int startIndex) {
    return newSubList(l, startIndex);
  }

  static public void removeSubList(List l, int from, int to) {
    if (l != null)
      subList(l, from, to).clear();
  }

  static public void removeSubList(List l, int from) {
    if (l != null)
      subList(l, from).clear();
  }

  static public File programDir_mine;

  static public File programDir() {
    return programDir(getProgramID());
  }

  static public File programDir(String snippetID) {
    boolean me = sameSnippetID(snippetID, programID());
    if (programDir_mine != null && me)
      return programDir_mine;
    File dir = new File(javaxDataDir(), formatSnippetIDOpt(snippetID));
    if (me) {
      String c = caseID();
      if (nempty(c))
        dir = newFile(dir, c);
    }
    return dir;
  }

  static public File programDir(String snippetID, String subPath) {
    return new File(programDir(snippetID), subPath);
  }

  static public <A> AutoCloseable tempSetTL(ThreadLocal<A> tl, A a) {
    return tempSetThreadLocal(tl, a);
  }

  static public <A> AutoCloseable tempSetTL(x30_pkg.x30_util.BetterThreadLocal<A> tl, A a) {
    return tempSetThreadLocalIfNecessary(tl, a);
  }

  static public <A> List<A> concatLists(Iterable<A>... lists) {
    List<A> l = new ArrayList();
    if (lists != null)
      for (Iterable<A> list : lists) addAll(l, list);
    return l;
  }

  static public <A> List<A> concatLists(Collection<? extends Iterable<A>> lists) {
    List<A> l = new ArrayList();
    if (lists != null)
      for (Iterable<A> list : lists) addAll(l, list);
    return l;
  }

  static public <A> TreeMap<String, A> caseInsensitiveMap() {
    return new TreeMap(caseInsensitiveComparator());
  }

  static public String mechList_opt_raw_fresh(String name) {
    Object readMode = mechMode().readMode;
    if (readMode instanceof File) {
      String md5Name = uniqueFileNameUsingMD5_80_v2(upper(name));
      return loadTextFileFromZipFile((File) readMode, md5Name);
    }
    boolean useLocal = false, useRemote = true;
    if (eq(readMode, "mergeLocalAndRemote"))
      useLocal = true;
    else if (eq(readMode, "local")) {
      useLocal = true;
      useRemote = false;
    }
    String s = "";
    if (useRemote) {
      if (eq(mechMode().readMode, "localCopies"))
        s = unnull(loadTextFile(remoteMechListMirrorFile(name)));
      else
        s = serverMechList_raw_fresh(name, true);
    }
    if (useLocal)
      s = appendNewLineIfNempty(s) + localMechList_opt_raw_fresh(name);
    return s;
  }

  static public <A> VF1<A> ivf1ToVF1(IVF1<A> f) {
    return f == null ? null : new VF1<A>() {

      public void get(A a) {
        try {
          f.get(a);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "f.get(a)";
      }
    };
  }

  static public <A> Set<A> syncIdentityHashSet() {
    return (Set) synchronizedSet(identityHashSet());
  }

  static public <A> AutoCloseable tempAdd(final Collection<A> l, final A a) {
    if (l == null || l.contains(a))
      return null;
    l.add(a);
    return new AutoCloseable() {

      public String toString() {
        return "l.remove(a);";
      }

      public void close() throws Exception {
        l.remove(a);
      }
    };
  }

  static public <A> A second(List<A> l) {
    return get(l, 1);
  }

  static public <A> A second(Iterable<A> l) {
    if (l == null)
      return null;
    Iterator<A> it = iterator(l);
    if (!it.hasNext())
      return null;
    it.next();
    return it.hasNext() ? it.next() : null;
  }

  static public <A> A second(A[] bla) {
    return bla == null || bla.length <= 1 ? null : bla[1];
  }

  static public <A, B> B second(Pair<A, B> p) {
    return p == null ? null : p.b;
  }

  static public char second(String s) {
    return charAt(s, 1);
  }

  static public <A, B> B second(Either<A, B> e) {
    return e == null ? null : e.bOpt();
  }

  static public <A> A third(List<A> l) {
    return _get(l, 2);
  }

  static public <A> A third(Iterable<A> l) {
    if (l == null)
      return null;
    Iterator<A> it = iterator(l);
    for (int _repeat_0 = 0; _repeat_0 < 2; _repeat_0++) {
      if (!it.hasNext())
        return null;
      it.next();
    }
    return it.hasNext() ? it.next() : null;
  }

  static public <A> A third(A[] bla) {
    return bla == null || bla.length <= 2 ? null : bla[2];
  }

  static public <A> VF1<A> runnableToVF1(final Runnable r) {
    return r == null ? null : new VF1<A>() {

      public void get(A a) {
        try {
          r.run();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "r.run()";
      }
    };
  }

  static public Map<String, MechListDependentCache<List<String>>> mechList_opt_tlft_cached_cache = ciMap();

  static public Lock mechList_opt_tlft_cached_lock = lock();

  static public List<String> mechList_opt_tlft_cached(String name) {
    MechListDependentCache<List<String>> listCache;
    {
      Lock __0 = mechList_opt_tlft_cached_lock;
      lock(__0);
      try {
        listCache = mechList_opt_tlft_cached_cache.get(name);
        if (listCache == null)
          mechList_opt_tlft_cached_cache.put(name, listCache = new MechListDependentCache(name, new F1<String, List<String>>() {

            public List<String> get(String x) {
              try {
                return tlft(x);
              } catch (Exception __e) {
                throw rethrow(__e);
              }
            }

            public String toString() {
              return "tlft(x)";
            }
          }));
      } finally {
        unlock(__0);
      }
    }
    return listCache.get();
  }

  static public List<String> splitAtDoubleArrow_bothDirections(String s) {
    return splitAtDoubleArrow_bothDirections(javaTok(s));
  }

  static public List<String> splitAtDoubleArrow_bothDirections(List<String> tok) {
    List<String> l = splitAtDoubleArrow(tok);
    if (l(l) != 2)
      l = reversedList(splitAtDoubleLeftArrow(tok));
    return l;
  }

  static public boolean isCIMap(Map m) {
    return m instanceof TreeMap && ((TreeMap) m).comparator() == caseInsensitiveComparator();
  }

  static public <A, B> Map<A, B> putAll(Map<A, B> a, Map<? extends A, ? extends B> b) {
    if (a != null && b != null)
      a.putAll(b);
    return a;
  }

  static public <A, B> Map<A, B> putAll(Map<A, B> a, Object... b) {
    if (a != null)
      litmap_impl(a, b);
    return a;
  }

  static public long parseLong(String s) {
    if (empty(s))
      return 0;
    return Long.parseLong(dropSuffix("L", s));
  }

  static public long parseLong(Object s) {
    return Long.parseLong((String) s);
  }

  static public Set asSet(Object[] array) {
    HashSet set = new HashSet();
    for (Object o : array) if (o != null)
      set.add(o);
    return set;
  }

  static public Set<String> asSet(String[] array) {
    TreeSet<String> set = new TreeSet();
    for (String o : array) if (o != null)
      set.add(o);
    return set;
  }

  static public <A> Set<A> asSet(Iterable<A> l) {
    if (l instanceof Set)
      return (Set) l;
    HashSet<A> set = new HashSet();
    for (A o : unnull(l)) if (o != null)
      set.add(o);
    return set;
  }

  static public <A> Set<A> asSet(MultiSet<A> ms) {
    return ms == null ? null : ms.asSet();
  }

  static public TreeSet<String> toCaseInsensitiveSet(Iterable<String> c) {
    if (isCISet(c))
      return (TreeSet) c;
    TreeSet<String> set = caseInsensitiveSet();
    addAll(set, c);
    return set;
  }

  static public TreeSet<String> toCaseInsensitiveSet(String... x) {
    TreeSet<String> set = caseInsensitiveSet();
    addAll(set, x);
    return set;
  }

  static public Set<String> mcFields() {
    return staticFieldNames(mc());
  }

  static public boolean startsWithEndsWith(String s, String prefix, String suffix) {
    return startsWith(s, prefix) && endsWith(s, suffix);
  }

  static public boolean startsWithEndsWith(String s, String prefixSuffix) {
    return startsWithEndsWith(s, prefixSuffix, prefixSuffix);
  }

  static public Object getOptMC(String field) {
    return getOpt(mc(), field);
  }

  static public void removeFromMapCI_sync(Map<String, Object> map, String key) {
    if (map == null)
      return;
    synchronized (getMutex(map)) {
      for (String k : cloneList(keys(map))) if (eqic(key, k))
        map.remove(k);
    }
  }

  static public String doPostSilently(Map urlParameters, String url) {
    return doPostSilently(makePostData(urlParameters), url);
  }

  static public String doPostSilently(String urlParameters, String url) {
    doPost_silently.set(true);
    return doPost(urlParameters, url);
  }

  static public Object[] concatArrays(Object[]... arrays) {
    int l = 0;
    for (Object[] a : arrays) l += l(a);
    Object[] x = new Object[l];
    int i = 0;
    for (Object[] a : arrays) if (a != null) {
      System.arraycopy(a, 0, x, i, l(a));
      i += l(a);
    }
    return x;
  }

  static volatile public boolean muricaPassword_pretendNotAuthed = false;

  static public String muricaPassword() {
    if (muricaPassword_pretendNotAuthed)
      return null;
    return trim(loadTextFile(muricaPasswordFile()));
  }

  static public void appendToTextFile(File file, String s) {
    appendToFile(file, s);
  }

  static public void appendToTextFile(String file, String s) {
    appendToTextFile(programFile(file), s);
  }

  static public File remoteMechListMirrorFile(String listName) {
    return newFile(remoteMechListMirrorsDir(), uniqueFileNameUsingMD5_80_v2(upper(listName)));
  }

  static public List<String> splitAtDoubleLeftArrow(String s) {
    return splitAtDoubleLeftArrow(javaTok(s));
  }

  static public List<String> splitAtDoubleLeftArrow(List<String> tok) {
    List<String> l = new ArrayList();
    int i = 0;
    while (i < l(tok)) {
      int j = indexOfSubList(tok, ll("<", "", "="), i);
      if (i >= l(tok))
        break;
      if (j < 0)
        j = l(tok);
      l.add(trimJoin(tok.subList(i, j)));
      i = j + 3;
    }
    return l;
  }

  static public JInternalFrame getInternalFrame(final Object _o) {
    return _o == null ? null : swing(new F0<JInternalFrame>() {

      public JInternalFrame get() {
        try {
          Object o = _o;
          if (o instanceof ButtonGroup)
            o = first(buttonsInGroup((ButtonGroup) o));
          if (!(o instanceof Component))
            return null;
          Component c = (Component) o;
          while (c != null) {
            if (c instanceof JInternalFrame)
              return (JInternalFrame) c;
            c = c.getParent();
          }
          return null;
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "O o = _o;\r\n    if (o instanceof ButtonGroup) o = first(buttonsInGroup((Button...";
      }
    });
  }

  static public <A> A optCast(Class<A> c, Object o) {
    return isInstance(c, o) ? (A) o : null;
  }

  static public String intToHex_flexLength(int i) {
    return Integer.toHexString(i);
  }

  static public <A> List<A> newSubList(List<A> l, int startIndex, int endIndex) {
    return cloneList(subList(l, startIndex, endIndex));
  }

  static public <A> List<A> newSubList(List<A> l, int startIndex) {
    return cloneList(subList(l, startIndex));
  }

  static public boolean sameSnippetID(String a, String b) {
    if (!isSnippetID(a) || !isSnippetID(b))
      return false;
    return parseSnippetID(a) == parseSnippetID(b);
  }

  static public <A> AutoCloseable tempSetThreadLocalIfNecessary(ThreadLocal<A> tl, A a) {
    if (tl == null)
      return null;
    A prev = tl.get();
    if (eq(prev, a))
      return null;
    tl.set(a);
    return new AutoCloseable() {

      public String toString() {
        return "tl.set(prev);";
      }

      public void close() throws Exception {
        tl.set(prev);
      }
    };
  }

  static public <A> AutoCloseable tempSetThreadLocalIfNecessary(x30_pkg.x30_util.BetterThreadLocal<A> tl, A a) {
    if (tl == null)
      return null;
    A prev = tl.get();
    if (eq(prev, a))
      return null;
    tl.set(a);
    return new AutoCloseable() {

      public String toString() {
        return "tl.set(prev);";
      }

      public void close() throws Exception {
        tl.set(prev);
      }
    };
  }

  static public <A, B extends A> void addAll(Collection<A> c, Iterable<B> b) {
    if (c != null && b != null)
      for (A a : b) c.add(a);
  }

  static public <A, B extends A> boolean addAll(Collection<A> c, Collection<B> b) {
    return c != null && b != null && c.addAll(b);
  }

  static public <A, B extends A> boolean addAll(Collection<A> c, B... b) {
    return c != null && b != null && c.addAll(Arrays.asList(b));
  }

  static public <A, B> Map<A, B> addAll(Map<A, B> a, Map<? extends A, ? extends B> b) {
    if (a != null)
      a.putAll(b);
    return a;
  }

  static public Comparator<String> caseInsensitiveComparator() {
    return betterCIComparator();
  }

  static public String uniqueFileNameUsingMD5_80_v2(String fullName) {
    return uniqueFileNameUsingMD5_80_v2(fullName, md5(fullName));
  }

  static public String uniqueFileNameUsingMD5_80_v2(String fullName, String md5) {
    return takeFirst(80 - 33, fileNameEncode(fullName)) + " - " + md5;
  }

  static public String upper(String s) {
    return s == null ? null : s.toUpperCase();
  }

  static public char upper(char c) {
    return Character.toUpperCase(c);
  }

  static public String loadTextFileFromZipFile(File inZip, String fileName) {
    try {
      if (!fileExists(inZip))
        return null;
      try {
        ZipFile zip = new ZipFile(inZip);
        try {
          return loadTextFileFromZipFile(zip, fileName);
        } finally {
          _close(zip);
        }
      } catch (Throwable e) {
        throw fail(f2s(inZip), e);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String loadTextFileFromZipFile(ZipFile zip, String fileName) {
    try {
      ZipEntry entry = zip.getEntry(fileName);
      if (entry == null)
        return null;
      InputStream fin = zip.getInputStream(entry);
      try {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        copyStream(fin, baos);
        return fromUTF8(baos.toByteArray());
      } finally {
        _close(fin);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public boolean serverMechList_raw_fresh_verbose = false;

  static public String serverMechList_raw_fresh(String name) {
    return serverMechList_raw_fresh(name, false);
  }

  static public String serverMechList_raw_fresh(String name, boolean opt) {
    Lock __0 = downloadLock();
    lock(__0);
    try {
      String text = null;
      try {
        text = loadTextFile(remoteMechListMirrorFile(name));
      } catch (Throwable __e) {
        _handleException(__e);
      }
      Object[] params = muricaCredentialsPlus("md5", md5OrNull(text), "l", l(text), "opt", opt ? 1 : 0, "withStatus", 1);
      String url = "http://butter.botcompany.de:8080/mech/raw/list-text/" + urlencode(name);
      String page = postPageSilently(url, params);
      Map map = jsonDecodeMap(page);
      boolean same = eq(map.get("Same"), true);
      boolean appended = eq(map.get("Appended"), true);
      saveTextFile(remoteMechListMirrorMetaFile(name), struct(getMultipleKeys(map, "Name", "Status")));
      if (!same) {
        if (appended)
          text += (String) map.get("Text");
        else
          text = (String) map.get("Text");
        saveTextFile(remoteMechListMirrorFile(name), text);
        File nameFile = remoteMechListMirrorNameFile(name);
        if (!fileExists(nameFile)) {
          String actualName = or((String) map.get("Name"), name);
          saveTextFile(nameFile, actualName);
        }
      }
      if (serverMechList_raw_fresh_verbose)
        print("Mech list " + name + ": " + (appended ? "appended" : same ? "same" : "downloaded") + ": " + n2(countLines(text), "line"));
      if (!same)
        vmBus_send("remoteMechListMirrorChanged", name);
      return text;
    } finally {
      unlock(__0);
    }
  }

  static public String appendNewLineIfNempty(String s) {
    return empty(s) ? "" : s + "\n";
  }

  static public String localMechList_opt_raw_fresh(String name) {
    return unnull(loadTextFile(localMechListFile(name)));
  }

  static public <A> Set<A> synchronizedSet() {
    return synchroHashSet();
  }

  static public <A> Set<A> synchronizedSet(Set<A> set) {
    return Collections.synchronizedSet(set);
  }

  static public <A> Set<A> identityHashSet() {
    return Collections.newSetFromMap(new IdentityHashMap());
  }

  static public char charAt(String s, int i) {
    return s != null && i >= 0 && i < s.length() ? s.charAt(i) : '\0';
  }

  static public <A> A _get(List<A> l, int idx) {
    return l != null && idx >= 0 && idx < l(l) ? l.get(idx) : null;
  }

  static public Object _get(Object o, String field) {
    return get(o, field);
  }

  static public Object _get(String field, Object o) {
    return get(o, field);
  }

  static public <A> A _get(A[] l, int idx) {
    return idx >= 0 && idx < l(l) ? l[idx] : null;
  }

  static public int javaTok_n, javaTok_elements;

  static public boolean javaTok_opt = false;

  static public List<String> javaTok(String s) {
    ++javaTok_n;
    ArrayList<String> tok = new ArrayList();
    int l = s == null ? 0 : s.length();
    int i = 0;
    while (i < l) {
      int j = i;
      char c, d;
      while (j < l) {
        c = s.charAt(j);
        d = j + 1 >= l ? '\0' : s.charAt(j + 1);
        if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
          ++j;
        else if (c == '/' && d == '*') {
          do ++j; while (j < l && !regionMatches(s, j, "*/"));
          j = Math.min(j + 2, l);
        } else if (c == '/' && d == '/') {
          do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
        } else
          break;
      }
      tok.add(javaTok_substringN(s, i, j));
      i = j;
      if (i >= l)
        break;
      c = s.charAt(i);
      d = i + 1 >= l ? '\0' : s.charAt(i + 1);
      if (c == '\'' && Character.isJavaIdentifierStart(d) && i + 2 < l && "'\\".indexOf(s.charAt(i + 2)) < 0) {
        j += 2;
        while (j < l && Character.isJavaIdentifierPart(s.charAt(j))) ++j;
      } else if (c == '\'' || c == '"') {
        char opener = c;
        ++j;
        while (j < l) {
          int c2 = s.charAt(j);
          if (c2 == opener || c2 == '\n' && opener == '\'') {
            ++j;
            break;
          } else if (c2 == '\\' && j + 1 < l)
            j += 2;
          else
            ++j;
        }
      } else if (Character.isJavaIdentifierStart(c))
        do ++j; while (j < l && (Character.isJavaIdentifierPart(s.charAt(j)) || s.charAt(j) == '\''));
      else if (Character.isDigit(c)) {
        do ++j; while (j < l && Character.isDigit(s.charAt(j)));
        if (j < l && s.charAt(j) == 'L')
          ++j;
      } else if (c == '[' && d == '[') {
        do ++j; while (j < l && !regionMatches(s, j, "]]"));
        j = Math.min(j + 2, l);
      } else if (c == '[' && d == '=' && i + 2 < l && s.charAt(i + 2) == '[') {
        do ++j; while (j + 2 < l && !regionMatches(s, j, "]=]"));
        j = Math.min(j + 3, l);
      } else
        ++j;
      tok.add(javaTok_substringC(s, i, j));
      i = j;
    }
    if ((tok.size() % 2) == 0)
      tok.add("");
    javaTok_elements += tok.size();
    return tok;
  }

  static public List<String> javaTok(List<String> tok) {
    return javaTokWithExisting(join(tok), tok);
  }

  static public List<String> splitAtDoubleArrow(String s) {
    return splitAtDoubleArrow(javaTok(s));
  }

  static public List<String> splitAtDoubleArrow(List<String> tok) {
    List<String> l = new ArrayList();
    int i = 0;
    while (i < l(tok)) {
      int j = indexOfSubList(tok, splitAtDoubleArrow_tok(), i);
      if (j < 0)
        j = l(tok);
      l.add(trimJoin(tok.subList(i, j)));
      i = j + 3;
    }
    return l;
  }

  static public <A> List<A> reversedList(Iterable<A> l) {
    List<A> x = cloneList(l);
    Collections.reverse(x);
    return x;
  }

  static public boolean isCISet(Iterable<String> l) {
    return l instanceof TreeSet && ((TreeSet) l).comparator() == caseInsensitiveComparator();
  }

  static public TreeSet<String> caseInsensitiveSet() {
    return caseInsensitiveSet_treeSet();
  }

  static public TreeSet<String> caseInsensitiveSet(Collection<String> c) {
    return caseInsensitiveSet_treeSet(c);
  }

  static public Set<String> staticFieldNames(Object o) {
    TreeSet<String> fields = new TreeSet();
    Class _c = _getClass(o);
    do {
      for (Field f : _c.getDeclaredFields()) if ((f.getModifiers() & Modifier.STATIC) != 0)
        fields.add(f.getName());
      _c = _c.getSuperclass();
    } while (_c != null);
    return fields;
  }

  static public Object getMutex(Object o) {
    return collectionMutex(o);
  }

  static public String makePostData(Map<Object, Object> map) {
    StringBuilder buf = new StringBuilder();
    for (Map.Entry<Object, Object> e : map.entrySet()) {
      String key = (String) (e.getKey());
      Object val = e.getValue();
      if (val != null) {
        String value = str(val);
        if (nempty(buf))
          buf.append("&");
        buf.append(urlencode(key)).append("=").append(urlencode((value)));
      }
    }
    return str(buf);
  }

  static public String makePostData(Object... params) {
    StringBuilder buf = new StringBuilder();
    int n = l(params);
    for (int i = 0; i + 1 < n; i += 2) {
      String key = (String) (params[i]);
      Object val = params[i + 1];
      if (val != null) {
        String value = str(val);
        if (nempty(buf))
          buf.append("&");
        buf.append(urlencode(key)).append("=").append(urlencode((value)));
      }
    }
    return str(buf);
  }

  static public ThreadLocal<Boolean> doPost_silently = new ThreadLocal();

  static public ThreadLocal<Long> doPost_timeout = new ThreadLocal();

  static public ThreadLocal<Map<String, String>> doPost_extraHeaders = new ThreadLocal();

  static public String doPost(String url, Map urlParameters) {
    return doPost(urlParameters, url);
  }

  static public String doPost(Map urlParameters, String url) {
    return doPost(makePostData(urlParameters), url);
  }

  static public String doPost(String urlParameters, String url) {
    try {
      URL _url = new URL(url);
      ping();
      return doPost(urlParameters, _url.openConnection(), _url);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String doPost(String urlParameters, URLConnection conn, URL url) {
    try {
      boolean silently = isTrue(optParam(doPost_silently));
      Long timeout = optParam(doPost_timeout);
      Map<String, String> extraHeaders = optPar(doPost_extraHeaders);
      setHeaders(conn);
      for (String key : keys(extraHeaders)) {
        conn.setRequestProperty(key, extraHeaders.get(key));
      }
      int l = lUtf8(urlParameters);
      if (!silently)
        print("Sending POST request: " + hideCredentials(url) + " (" + l + " bytes)");
      if (timeout != null)
        setURLConnectionTimeouts(conn, timeout);
      ((HttpURLConnection) conn).setRequestMethod("POST");
      conn.setDoOutput(true);
      conn.setRequestProperty("Content-Length", str(l));
      OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream(), "UTF-8");
      writer.write(urlParameters);
      writer.flush();
      String contents = loadPage_utf8(conn, url, false);
      writer.close();
      return contents;
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public File muricaPasswordFile() {
    return new File(javaxSecretDir(), "murica/muricaPasswordFile");
  }

  static public File programFile(String name) {
    return prepareProgramFile(name);
  }

  static public File programFile(String progID, String name) {
    return prepareProgramFile(progID, name);
  }

  static public File remoteMechListMirrorsDir() {
    return javaxDataDir("Remote Mech Lists");
  }

  static public <A> int indexOfSubList(List<A> x, List<A> y) {
    return indexOfSubList(x, y, 0);
  }

  static public <A> int indexOfSubList(List<A> x, List<A> y, int i) {
    outer: for (; i + l(y) <= l(x); i++) {
      for (int j = 0; j < l(y); j++) if (neq(x.get(i + j), y.get(j)))
        continue outer;
      return i;
    }
    return -1;
  }

  static public <A> int indexOfSubList(List<A> x, A[] y, int i) {
    outer: for (; i + l(y) <= l(x); i++) {
      for (int j = 0; j < l(y); j++) if (neq(x.get(i + j), y[j]))
        continue outer;
      return i;
    }
    return -1;
  }

  static public String trimJoin(List<String> s) {
    return trim(join(s));
  }

  static public List<AbstractButton> buttonsInGroup(ButtonGroup g) {
    if (g == null)
      return ll();
    return asList(g.getElements());
  }

  static public boolean isInstance(Class type, Object arg) {
    return type.isInstance(arg);
  }

  static public betterCIComparator_C betterCIComparator_instance;

  static public betterCIComparator_C betterCIComparator() {
    if (betterCIComparator_instance == null)
      betterCIComparator_instance = new betterCIComparator_C();
    return betterCIComparator_instance;
  }

  final static public class betterCIComparator_C implements Comparator<String> {

    public int compare(String s1, String s2) {
      if (s1 == null)
        return s2 == null ? 0 : -1;
      if (s2 == null)
        return 1;
      int n1 = s1.length();
      int n2 = s2.length();
      int min = Math.min(n1, n2);
      for (int i = 0; i < min; i++) {
        char c1 = s1.charAt(i);
        char c2 = s2.charAt(i);
        if (c1 != c2) {
          c1 = Character.toUpperCase(c1);
          c2 = Character.toUpperCase(c2);
          if (c1 != c2) {
            c1 = Character.toLowerCase(c1);
            c2 = Character.toLowerCase(c2);
            if (c1 != c2) {
              return c1 - c2;
            }
          }
        }
      }
      return n1 - n2;
    }
  }

  static public String md5(String text) {
    try {
      if (text == null)
        return "-";
      return bytesToHex(md5_impl(toUtf8(text)));
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String md5(byte[] data) {
    if (data == null)
      return "-";
    return bytesToHex(md5_impl(data));
  }

  static public byte[] md5_impl(byte[] data) {
    try {
      return MessageDigest.getInstance("MD5").digest(data);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String md5(File file) {
    return md5OfFile(file);
  }

  static public String fileNameEncode_safeChars = " ()[]#,!";

  static public String fileNameEncode(String s) {
    StringBuilder buf = new StringBuilder();
    int n = l(s);
    for (int i = 0; i < n; i++) {
      char c = s.charAt(i);
      if (contains(fileNameEncode_safeChars, c))
        buf.append(c);
      else
        buf.append(urlencode(str(c)));
    }
    return str(buf);
  }

  static public boolean fileExists(String path) {
    return path != null && new File(path).exists();
  }

  static public boolean fileExists(File f) {
    return f != null && f.exists();
  }

  static public String fromUTF8(byte[] bytes) {
    return fromUtf8(bytes);
  }

  static public Lock downloadLock_lock = fairLock();

  static public Lock downloadLock() {
    return downloadLock_lock;
  }

  static public Object[] muricaCredentialsPlus(Object... params) {
    return concatArrays(muricaCredentials(), params);
  }

  static public String md5OrNull(String s) {
    return s == null ? null : md5(s);
  }

  static public String urlencode(String x) {
    try {
      return URLEncoder.encode(unnull(x), "UTF-8");
    } catch (UnsupportedEncodingException e) {
      throw new RuntimeException(e);
    }
  }

  static public Map jsonDecodeMap(String s) {
    Object o = jsonDecode(s);
    if (o instanceof List && empty((List) o))
      return new HashMap();
    if (o instanceof Map)
      return (Map) o;
    else
      throw fail("Not a JSON map: " + s);
  }

  static public File remoteMechListMirrorMetaFile(String listName) {
    return javaxDataDir("Remote Mech Lists/" + uniqueFileNameUsingMD5_80_v2(upper(listName)) + ".meta");
  }

  static public <A, B> Map<A, B> getMultipleKeys(Map<A, B> map, A... keys) {
    Map<A, B> map2 = similarEmptyMap(map);
    if (map != null)
      for (A key : keys) map2.put(key, map.get(key));
    return map2;
  }

  static public File remoteMechListMirrorNameFile(String listName) {
    return javaxDataDir("Remote Mech Lists/" + uniqueFileNameUsingMD5_80_v2(upper(listName)) + ".name");
  }

  static public int countLines(String s) {
    return l(toLines(s));
  }

  static public File localMechListFile(String listName) {
    return newFile(localMechListsDir(), uniqueFileNameUsingMD5_80_v2(listName) + ".text");
  }

  static public boolean regionMatches(String a, int offsetA, String b, int offsetB, int len) {
    return a != null && b != null && a.regionMatches(offsetA, b, offsetB, len);
  }

  static public boolean regionMatches(String a, int offsetA, String b) {
    return regionMatches(a, offsetA, b, 0, l(b));
  }

  static public String javaTok_substringN(String s, int i, int j) {
    if (i == j)
      return "";
    if (j == i + 1 && s.charAt(i) == ' ')
      return " ";
    return s.substring(i, j);
  }

  static public String javaTok_substringC(String s, int i, int j) {
    return s.substring(i, j);
  }

  static public List<String> javaTokWithExisting(String s, List<String> existing) {
    ++javaTok_n;
    int nExisting = javaTok_opt && existing != null ? existing.size() : 0;
    ArrayList<String> tok = existing != null ? new ArrayList(nExisting) : new ArrayList();
    int l = s.length();
    int i = 0, n = 0;
    while (i < l) {
      int j = i;
      char c, d;
      while (j < l) {
        c = s.charAt(j);
        d = j + 1 >= l ? '\0' : s.charAt(j + 1);
        if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
          ++j;
        else if (c == '/' && d == '*') {
          do ++j; while (j < l && !s.substring(j, Math.min(j + 2, l)).equals("*/"));
          j = Math.min(j + 2, l);
        } else if (c == '/' && d == '/') {
          do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
        } else
          break;
      }
      if (n < nExisting && javaTokWithExisting_isCopyable(existing.get(n), s, i, j))
        tok.add(existing.get(n));
      else
        tok.add(javaTok_substringN(s, i, j));
      ++n;
      i = j;
      if (i >= l)
        break;
      c = s.charAt(i);
      d = i + 1 >= l ? '\0' : s.charAt(i + 1);
      if (c == '\'' && Character.isJavaIdentifierStart(d) && i + 2 < l && "'\\".indexOf(s.charAt(i + 2)) < 0) {
        j += 2;
        while (j < l && Character.isJavaIdentifierPart(s.charAt(j))) ++j;
      } else if (c == '\'' || c == '"') {
        char opener = c;
        ++j;
        while (j < l) {
          if (s.charAt(j) == opener) {
            ++j;
            break;
          } else if (s.charAt(j) == '\\' && j + 1 < l)
            j += 2;
          else
            ++j;
        }
      } else if (Character.isJavaIdentifierStart(c))
        do ++j; while (j < l && (Character.isJavaIdentifierPart(s.charAt(j)) || "'".indexOf(s.charAt(j)) >= 0));
      else if (Character.isDigit(c)) {
        do ++j; while (j < l && Character.isDigit(s.charAt(j)));
        if (j < l && s.charAt(j) == 'L')
          ++j;
      } else if (c == '[' && d == '[') {
        do ++j; while (j + 1 < l && !s.substring(j, j + 2).equals("]]"));
        j = Math.min(j + 2, l);
      } else if (c == '[' && d == '=' && i + 2 < l && s.charAt(i + 2) == '[') {
        do ++j; while (j + 2 < l && !s.substring(j, j + 3).equals("]=]"));
        j = Math.min(j + 3, l);
      } else
        ++j;
      if (n < nExisting && javaTokWithExisting_isCopyable(existing.get(n), s, i, j))
        tok.add(existing.get(n));
      else
        tok.add(javaTok_substringC(s, i, j));
      ++n;
      i = j;
    }
    if ((tok.size() % 2) == 0)
      tok.add("");
    javaTok_elements += tok.size();
    return tok;
  }

  static public boolean javaTokWithExisting_isCopyable(String t, String s, int i, int j) {
    return t.length() == j - i && s.regionMatches(i, t, 0, j - i);
  }

  static public List<String> splitAtDoubleArrow_tok;

  static public List<String> splitAtDoubleArrow_tok() {
    if (splitAtDoubleArrow_tok == null)
      splitAtDoubleArrow_tok = ll("=", "", ">");
    return splitAtDoubleArrow_tok;
  }

  static public TreeSet<String> caseInsensitiveSet_treeSet() {
    return new TreeSet(caseInsensitiveComparator());
  }

  static public TreeSet<String> caseInsensitiveSet_treeSet(Collection<String> c) {
    return toCaseInsensitiveSet_treeSet(c);
  }

  static public void setHeaders(URLConnection con) throws IOException {
    String computerID = getComputerID_quick();
    if (computerID != null)
      try {
        con.setRequestProperty("X-ComputerID", computerID);
        con.setRequestProperty("X-OS", System.getProperty("os.name") + " " + System.getProperty("os.version"));
      } catch (Throwable e) {
      }
  }

  static public int lUtf8(String s) {
    return l(utf8(s));
  }

  static public URLConnection setURLConnectionTimeouts(URLConnection con, long timeout) {
    con.setConnectTimeout(toInt(timeout));
    con.setReadTimeout(toInt(timeout));
    if (con.getConnectTimeout() != timeout || con.getReadTimeout() != timeout)
      print("Warning: Timeouts not set by JDK.");
    return con;
  }

  static public File javaxSecretDir_dir;

  static public File javaxSecretDir() {
    return javaxSecretDir_dir != null ? javaxSecretDir_dir : new File(userHome(), "JavaX-Secret");
  }

  static public File javaxSecretDir(String sub) {
    return newFile(javaxSecretDir(), sub);
  }

  static public File prepareProgramFile(String name) {
    return mkdirsForFile(getProgramFile(name));
  }

  static public File prepareProgramFile(String progID, String name) {
    return mkdirsForFile(getProgramFile(progID, name));
  }

  public static String bytesToHex(byte[] bytes) {
    return bytesToHex(bytes, 0, bytes.length);
  }

  public static String bytesToHex(byte[] bytes, int ofs, int len) {
    StringBuilder stringBuilder = new StringBuilder(len * 2);
    for (int i = 0; i < len; i++) {
      String s = "0" + Integer.toHexString(bytes[ofs + i]);
      stringBuilder.append(s.substring(s.length() - 2, s.length()));
    }
    return stringBuilder.toString();
  }

  static public boolean md5OfFile_verbose = false;

  static public String md5OfFile(String path) {
    return md5OfFile(newFile(path));
  }

  static public String md5OfFile(File f) {
    try {
      if (!f.exists())
        return "-";
      if (md5OfFile_verbose)
        print("Getting MD5 of " + f);
      MessageDigest md5 = MessageDigest.getInstance("MD5");
      FileInputStream in = new FileInputStream(f);
      try {
        byte[] buf = new byte[65536];
        int l;
        while (true) {
          l = in.read(buf);
          if (l <= 0)
            break;
          md5.update(buf, 0, l);
        }
        return bytesToHex(md5.digest());
      } finally {
        _close(in);
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String fromUtf8(byte[] bytes) {
    try {
      return bytes == null ? null : new String(bytes, utf8charset());
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public Object jsonDecode(String text) {
    return new jsonDecode_Y(text).parse();
  }

  static public class jsonDecode_Y {

    public String text;

    public List<String> tok;

    public boolean useOrderedMaps = false;

    public int i = 1;

    public jsonDecode_Y(String text) {
      this.text = text;
      tok = jsonTok(text);
    }

    transient public IF1<String, RuntimeException> fail;

    public RuntimeException fail(String msg) {
      return fail != null ? fail.get(msg) : fail_base(msg);
    }

    final public RuntimeException fail_fallback(IF1<String, RuntimeException> _f, String msg) {
      return _f != null ? _f.get(msg) : fail_base(msg);
    }

    public RuntimeException fail_base(String msg) {
      return main.fail(msg);
    }

    public Object parse() {
      if (l(tok) == 1)
        return null;
      return parseExpr();
    }

    public Object parseExpr() {
      String t = tok.get(i);
      if (t.startsWith("\"") || t.startsWith("'")) {
        String s = unquote(tok.get(i));
        i += 2;
        return s;
      }
      if (t.equals("{"))
        return parseMap();
      if (t.equals("["))
        return this.parseList();
      if (t.equals("null")) {
        i += 2;
        return null;
      }
      if (t.equals("false")) {
        i += 2;
        return false;
      }
      if (t.equals("true")) {
        i += 2;
        return true;
      }
      boolean minus = false;
      if (t.equals("-")) {
        minus = true;
        i += 2;
        t = get(tok, i);
      }
      if (isInteger(t)) {
        int j = i;
        i += 2;
        if (eqOneOf(get(tok, i), ".", "e", "E")) {
          while (isInteger(get(tok, i)) || eqOneOf(get(tok, i), ".", "e", "E", "-")) i += 2;
          double d = parseDouble(joinSubList(tok, j, i - 1));
          if (minus)
            d = -d;
          return d;
        } else {
          long l = parseLong(t);
          if (minus)
            l = -l;
          return l != (int) l ? (Object) new Long(l) : new Integer((int) l);
        }
      }
      throw fail("Unknown token " + (i + 1) + ": " + t + ": " + text);
    }

    public Object parseList() {
      consume("[");
      List list = new ArrayList();
      while (!tok.get(i).equals("]")) {
        list.add(parseExpr());
        if (tok.get(i).equals(","))
          i += 2;
      }
      consume("]");
      return list;
    }

    public Object parseMap() {
      consume("{");
      Map map = useOrderedMaps ? new LinkedHashMap() : new TreeMap();
      while (!tok.get(i).equals("}")) {
        String key = unquote(tok.get(i));
        i += 2;
        consume(":");
        Object value = parseExpr();
        map.put(key, value);
        if (tok.get(i).equals(","))
          i += 2;
      }
      consume("}");
      return map;
    }

    public void consume(String s) {
      if (!tok.get(i).equals(s)) {
        String prevToken = i - 2 >= 0 ? tok.get(i - 2) : "";
        String nextTokens = join(tok.subList(i, Math.min(i + 4, tok.size())));
        throw fail(quote(s) + " expected: " + prevToken + " " + nextTokens + " (" + i + "/" + tok.size() + ")");
      }
      i += 2;
    }
  }

  static public Map similarEmptyMap(Map m) {
    if (m instanceof TreeMap)
      return new TreeMap(((TreeMap) m).comparator());
    if (m instanceof LinkedHashMap)
      return new LinkedHashMap();
    return new HashMap();
  }

  static public Map similarEmptyMap(Iterable m) {
    if (m instanceof TreeSet)
      return new TreeMap(((TreeSet) m).comparator());
    if (m instanceof LinkedHashSet)
      return new LinkedHashMap();
    return new HashMap();
  }

  static public File localMechListsDir() {
    return javaxDataDir("Mech Lists");
  }

  static public TreeSet<String> toCaseInsensitiveSet_treeSet(Iterable<String> c) {
    if (isCISet(c))
      return (TreeSet) c;
    TreeSet<String> set = caseInsensitiveSet_treeSet();
    addAll(set, c);
    return set;
  }

  static public TreeSet<String> toCaseInsensitiveSet_treeSet(String... x) {
    TreeSet<String> set = caseInsensitiveSet_treeSet();
    addAll(set, x);
    return set;
  }

  static public String getComputerID_quick() {
    return computerID();
  }

  static public byte[] utf8(String s) {
    return toUtf8(s);
  }

  static public List<String> jsonTok(String s) {
    List<String> tok = new ArrayList();
    int l = l(s);
    int i = 0;
    while (i < l) {
      int j = i;
      char c;
      String cc;
      while (j < l) {
        c = s.charAt(j);
        cc = s.substring(j, Math.min(j + 2, l));
        if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
          ++j;
        else if (cc.equals("/*")) {
          do ++j; while (j < l && !s.substring(j, Math.min(j + 2, l)).equals("*/"));
          j = Math.min(j + 2, l);
        } else if (cc.equals("//")) {
          do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
        } else
          break;
      }
      tok.add(s.substring(i, j));
      i = j;
      if (i >= l)
        break;
      c = s.charAt(i);
      if (c == '\'' || c == '"') {
        char opener = c;
        ++j;
        while (j < l) {
          if (s.charAt(j) == opener) {
            ++j;
            break;
          } else if (s.charAt(j) == '\\' && j + 1 < l)
            j += 2;
          else
            ++j;
        }
      } else if (Character.isLetter(c))
        do ++j; while (j < l && Character.isLetter(s.charAt(j)));
      else if (Character.isDigit(c))
        do ++j; while (j < l && Character.isDigit(s.charAt(j)));
      else
        ++j;
      tok.add(s.substring(i, j));
      i = j;
    }
    if ((tok.size() % 2) == 0)
      tok.add("");
    return tok;
  }

  static public Class main() {
    return getMainClass();
  }

  static public String joinSubList(List<String> l, int i, int j) {
    return join(subList(l, i, j));
  }

  static public String joinSubList(List<String> l, int i) {
    return join(subList(l, i));
  }

  static public interface IResourceHolder {

    public <A extends AutoCloseable> A add(A a);
  }

  final static public class _MethodCache {

    final public Class c;

    final public HashMap<String, List<Method>> cache = new HashMap();

    public _MethodCache(Class c) {
      this.c = c;
      _init();
    }

    public void _init() {
      Class _c = c;
      while (_c != null) {
        for (Method m : _c.getDeclaredMethods()) if (!isAbstract(m) && !reflection_isForbiddenMethod(m))
          multiMapPut(cache, m.getName(), makeAccessible(m));
        _c = _c.getSuperclass();
      }
      for (Class intf : allInterfacesImplementedBy(c)) for (Method m : intf.getDeclaredMethods()) if (m.isDefault() && !reflection_isForbiddenMethod(m))
        multiMapPut(cache, m.getName(), makeAccessible(m));
    }

    public Method findMethod(String method, Object[] args) {
      try {
        List<Method> m = cache.get(method);
        if (m == null)
          return null;
        int n = m.size();
        for (int i = 0; i < n; i++) {
          Method me = m.get(i);
          if (call_checkArgs(me, args, false))
            return me;
        }
        return null;
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    public Method findStaticMethod(String method, Object[] args) {
      try {
        List<Method> m = cache.get(method);
        if (m == null)
          return null;
        int n = m.size();
        for (int i = 0; i < n; i++) {
          Method me = m.get(i);
          if (isStaticMethod(me) && call_checkArgs(me, args, false))
            return me;
        }
        return null;
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }
  }

  static public class StefansOS_ConnectToServer implements AutoCloseable {

    public DialogIO io;

    volatile public boolean on = false;

    public Set<String> subs = synchroLinkedHashSet();

    public VF1<String> onLine;

    public String server = "botcompany.de";

    public List<Runnable> onConnected = syncList();

    public void start() {
      if (on)
        return;
      on = true;
      _connect();
      doEvery_daemon_highPriority(30000, new Runnable() {

        public void run() {
          try {
            if (io != null)
              io.sendLine("");
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "if (io != null) io.sendLine(\"\")";
        }
      });
    }

    public void cleanMeUp() {
      on = false;
      closeIO();
    }

    public void close() {
      cleanMeUp();
    }

    public void _connect() {
      startThread("Connect", new Runnable() {

        public void run() {
          try {
            while (licensed() && on) {
              if (!tryToConnect()) {
                sleepSeconds(1);
                continue;
              }
              try {
                io = talkTo(server, 6000);
                io.getSocket().setSoTimeout(30000 + 10000);
                print("Connected.");
                pcallFAll(onConnected);
                AutoCloseable __1 = tempAfterwards(new Runnable() {

                  public void run() {
                    try {
                      print("Disconnected.");
                    } catch (Exception __e) {
                      throw rethrow(__e);
                    }
                  }

                  public String toString() {
                    return "print(\"Disconnected.\")";
                  }
                });
                try {
                  io.sendLine(format("computerID=*", computerID()));
                  for (String channel : cloneList(subs)) io.sendLine(format("sub *", channel));
                  print("Sent computer ID: " + computerID());
                  String line;
                  while ((line = io.readLine()) != null) pcallF(onLine, line);
                } finally {
                  _close(__1);
                }
              } catch (Throwable e) {
                printShortException(e);
              }
              closeIO();
              sleepSeconds(5);
            }
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "while (licensed() && on) {\r\n        if (!tryToConnect()) { sleepSeconds(1); c...";
        }
      });
    }

    public void closeIO() {
      if (io != null) {
        try {
          io.close();
        } catch (Throwable __e) {
          _handleException(__e);
        }
        io = null;
      }
    }

    public boolean connected() {
      return io != null;
    }

    public void sub(String channel) {
      if (subs.add(channel) && io != null) {
        try {
          io.sendLine(format("sub *", channel));
        } catch (Throwable __e) {
          _handleException(__e);
        }
      }
    }

    public void startWithSubs(String... channels) {
      for (String channel : channels) sub(channel);
      start();
    }

    public void sendLine(String line) {
      if (io != null)
        io.sendLine(line);
      else
        print("Can't send, not connected: " + line);
    }

    transient public IF0<Boolean> tryToConnect;

    public boolean tryToConnect() {
      return tryToConnect != null ? tryToConnect.get() : tryToConnect_base();
    }

    final public boolean tryToConnect_fallback(IF0<Boolean> _f) {
      return _f != null ? _f.get() : tryToConnect_base();
    }

    public boolean tryToConnect_base() {
      return true;
    }
  }

  static abstract public class VF2<A, B> {

    abstract public void get(A a, B b);
  }

  static public class Var<A> implements IVar<A>, ISetter<A> {

    public Var() {
    }

    public Var(A v) {
      this.v = v;
    }

    public A v;

    public synchronized void set(A a) {
      if (v != a) {
        v = a;
        notifyAll();
      }
    }

    public synchronized A get() {
      return v;
    }

    public synchronized boolean has() {
      return v != null;
    }

    public synchronized void clear() {
      v = null;
    }

    public String toString() {
      return str(this.get());
    }
  }

  static public class MechListDependentCache<A> extends Cache<A> {

    public String listName, lastListContents;

    public MechListDependentCache() {
    }

    public MechListDependentCache(String listName, Object maker) {
      this.maker = maker;
      this.listName = listName;
    }

    public A make() {
      return (A) callF(maker, lastListContents);
    }

    public A get() {
      if (hasLock(lock))
        return value;
      {
        String listContents = mL_raw(listName);
        Lock __0 = lock;
        lock(__0);
        try {
          if (!eqOrSame(listContents, lastListContents))
            clear();
          lastListContents = listContents;
        } finally {
          unlock(__0);
        }
      }
      return super.get();
    }
  }

  static public class BetterThread extends Thread {

    public Runnable target;

    public BetterThread(Runnable target) {
      this.target = target;
      _created();
    }

    public BetterThread(Runnable target, String name) {
      super(name);
      this.target = target;
      _created();
    }

    public void _created() {
      vmBus_send("threadCreated", this);
    }

    public void run() {
      try {
        vmBus_send("threadStarted", this);
        if (target != null)
          target.run();
      } finally {
        vmBus_send("threadEnded", this);
      }
    }

    public Runnable getTarget() {
      return target;
    }
  }

  static public class LeftAlignedLine extends JPanel {

    public LeftAlignedLine(Component... components) {
      setLayout(LetterLayout.leftAlignedRow());
      for (Component component : components) add(component);
    }

    public void add(String text) {
      add(new JLabel(text));
    }
  }

  static abstract public class LiveValue<A> {

    abstract public Class<A> getType();

    abstract public A get();

    abstract public void onChange(Runnable l);

    abstract public void removeOnChangeListener(Runnable l);

    public void onChangeAndNow(Runnable l) {
      onChange(l);
      callF(l);
    }
  }

  static abstract public class IterableIterator<A> implements Iterator<A>, Iterable<A> {

    public Iterator<A> iterator() {
      return this;
    }

    public void remove() {
      unsupportedOperation();
    }
  }

  static public class Dyn_FieldWatcher {

    public DynModule module;

    public String field;

    public Object value;

    public Runnable action;

    transient public IF1<Object, Object> cloneValue;

    public Object cloneValue(Object o) {
      return cloneValue != null ? cloneValue.get(o) : cloneValue_base(o);
    }

    final public Object cloneValue_fallback(IF1<Object, Object> _f, Object o) {
      return _f != null ? _f.get(o) : cloneValue_base(o);
    }

    public Object cloneValue_base(Object o) {
      return o;
    }

    public Dyn_FieldWatcher(DynModule module, String field, Runnable action) {
      this(module, field, action, null);
    }

    public Dyn_FieldWatcher(DynModule module, String field, Runnable action, IF1 cloneValue) {
      this.cloneValue = cloneValue;
      this.action = action;
      this.field = field;
      this.module = module;
      value = cloneValue(get(module, field));
      module.onChange(new Runnable() {

        public void run() {
          try {
            check();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "check();";
        }
      });
      module.onFieldChange(new VF1<String>() {

        public void get(String f) {
          try {
            if (eq(f, field))
              check();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "if (eq(f, field))\r\n        check();";
        }
      });
    }

    public void check() {
      Object newValue = cloneValue(get(module, field));
      if (eq(value, newValue))
        return;
      value = newValue;
      dm_q(module, action);
    }
  }

  static abstract public class F2<A, B, C> {

    abstract public C get(A a, B b);
  }

  static public class PKI {

    static public String getProvider() {
      return isAndroid() ? "BC" : "SUN";
    }

    public static boolean verifySignature(byte[] publicKey, byte[] signature, String file) throws InvalidKeyException, NoSuchProviderException, NoSuchAlgorithmException, IOException, SignatureException, InvalidKeySpecException {
      Signature sig = initPublicSignature(publicKey);
      FileInputStream datafis = new FileInputStream(file);
      BufferedInputStream bufin = new BufferedInputStream(datafis);
      byte[] buffer = new byte[1024];
      while (bufin.available() != 0) {
        int len = bufin.read(buffer);
        sig.update(buffer, 0, len);
      }
      bufin.close();
      return sig.verify(signature);
    }

    public static boolean verifySignature(byte[] publicKey, byte[] signature, byte[] data) {
      try {
        Signature sig = initPublicSignature(publicKey);
        sig.update(data);
        return sig.verify(signature);
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    static public Signature initPublicSignature(byte[] publicKey) throws NoSuchAlgorithmException, NoSuchProviderException, InvalidKeySpecException, InvalidKeyException {
      Signature sig = Signature.getInstance("SHA1withDSA", getProvider());
      PublicKey pub = KeyFactory.getInstance("DSA", getProvider()).generatePublic(new X509EncodedKeySpec(publicKey));
      sig.initVerify(pub);
      return sig;
    }

    public static byte[] sign(String file, byte[] privateKey) {
      try {
        Signature dsa = initSignature(privateKey);
        FileInputStream fis = new FileInputStream(file);
        BufferedInputStream bufin = new BufferedInputStream(fis);
        byte[] buffer = new byte[1024];
        int len;
        while ((len = bufin.read(buffer)) >= 0) dsa.update(buffer, 0, len);
        bufin.close();
        return dsa.sign();
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    public static byte[] sign(byte[] data, byte[] privateKey) {
      try {
        Signature dsa = initSignature(privateKey);
        dsa.update(data);
        return dsa.sign();
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    static public Signature initSignature(byte[] privateKey) throws NoSuchAlgorithmException, NoSuchProviderException, InvalidKeySpecException, InvalidKeyException {
      Signature dsa = Signature.getInstance("SHA1withDSA", getProvider());
      EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(privateKey);
      PrivateKey priv = KeyFactory.getInstance("DSA", getProvider()).generatePrivate(keySpec);
      dsa.initSign(priv);
      return dsa;
    }

    public static KeyPair makeKeyPair() throws NoSuchAlgorithmException, NoSuchProviderException {
      KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DSA", getProvider());
      SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
      keyGen.initialize(1024, random);
      return keyGen.generateKeyPair();
    }

    public static boolean makeStandardKeyPairIfNecessary() {
      try {
        File publicKeyPath = getStandardPublicKeyPath();
        File privateKeyPath = getStandardPrivateKeyPath();
        if (!publicKeyPath.exists() || !privateKeyPath.exists()) {
          print("PKI: Making standard key pair");
          KeyPair keyPair = makeKeyPair();
          byte[] privateKey = keyPair.getPrivate().getEncoded();
          print("PKI: Private key hex (debug) - " + bytesToHex(privateKey));
          saveTextFile(privateKeyPath, privateKeyToString(privateKey));
          String publicKey = publicKeyToString(keyPair.getPublic());
          saveTextFile(publicKeyPath, publicKey);
          print("PKI: Standard key pair made!");
          print();
          printInfo();
          return true;
        }
        return false;
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    static public void printInfo() {
      print("PKI: Machine's public key: " + publicKeyToString(getStandardPublicKey()));
      print("PKI: Machine's private key in: " + getStandardPrivateKeyPath());
      print("PKI: Machine's public key also in: " + getStandardPublicKeyPath());
      print("PKI: User's public key: " + publicKeyToString(userPublicKey()));
      print("PKI: User's private key in: " + userPrivateKeyPath());
      print("PKI: User's public key also in: " + userPublicKeyPath());
    }

    public static File getStandardPrivateKeyPath() {
      return new File(getSecretProgramDir("#1001547"), "Computer-Private-Key");
    }

    public static File userPublicKeyPath() {
      return new File(getProgramDir("#1001547"), "User-Public-Key");
    }

    public static File userPrivateKeyPath() {
      return new File(getSecretProgramDir("#1001547"), "User-Private-Key");
    }

    public static File getStandardPublicKeyPath() {
      return new File(getProgramDir("#1001547"), "Computer-Public-Key");
    }

    public static byte[] getStandardPrivateKey() {
      makeStandardKeyPairIfNecessary();
      return privateKeyFromString(loadTextFile(getStandardPrivateKeyPath()));
    }

    public static byte[] getStandardPublicKey() {
      makeStandardKeyPairIfNecessary();
      return publicKeyFromString(loadTextFile(getStandardPublicKeyPath()));
    }

    public static byte[] userPrivateKey() {
      makeUserKeyPairIfNecessary();
      return privateKeyFromString(loadTextFile(userPrivateKeyPath()));
    }

    public static byte[] userPublicKey() {
      makeUserKeyPairIfNecessary();
      return publicKeyFromString(loadTextFile(userPublicKeyPath()));
    }

    static public String publicKeyToString(PublicKey publicKey) {
      return publicKeyToString(publicKey.getEncoded());
    }

    public static String privateKeyToString(PrivateKey privateKey) {
      return privateKeyToString(privateKey.getEncoded());
    }

    public static byte[] publicKeyFromString(String key) {
      return base64decode(dropPrefixMandatory("publickey:", trim(key)));
    }

    public static byte[] privateKeyFromString(String key) {
      return base64decode(dropPrefixMandatory("privatekey:", trim(key)));
    }

    public static byte[] signatureFromString(String key) {
      return base64decode(key);
    }

    public static byte[] dataFromString(String text) {
      return toUtf8(text);
    }

    public static String signatureToString(byte[] signature) {
      return base64encode(signature);
    }

    public static String publicKeyToString(byte[] key) {
      return "publickey:" + base64encode(key);
    }

    public static String privateKeyToString(byte[] key) {
      return "privatekey:" + base64encode(key);
    }

    static public boolean makeUserKeyPairIfNecessary() {
      try {
        File publicKeyPath = userPublicKeyPath();
        File privateKeyPath = userPrivateKeyPath();
        if (!publicKeyPath.exists() || !privateKeyPath.exists()) {
          print("PKI: Making user key pair");
          KeyPair keyPair = makeKeyPair();
          byte[] privateKey = keyPair.getPrivate().getEncoded();
          print("PKI: Private key hex (debug) - " + bytesToHex(privateKey));
          saveTextFile(privateKeyPath, privateKeyToString(privateKey));
          String publicKey = publicKeyToString(keyPair.getPublic());
          saveTextFile(publicKeyPath, publicKey);
          print("PKI: User key pair made!");
          print();
          printInfo();
          return true;
        }
        return false;
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }
  }

  static public class SimpleLiveValue<A> extends LiveValue<A> {

    public Class<A> type;

    volatile public A value;

    transient public List onChange = synchroList();

    public SimpleLiveValue(Class<A> type) {
      this.type = type;
    }

    public SimpleLiveValue(Class<A> type, A value) {
      this.value = value;
      this.type = type;
    }

    public Class<A> getType() {
      return type;
    }

    public A get() {
      return value;
    }

    public void onChange(Runnable l) {
      onChange.add(l);
    }

    public void onChangeAndNow(Runnable l) {
      onChange(l);
      callF(l);
    }

    public void removeOnChangeListener(Runnable l) {
      onChange.remove(l);
    }

    public void fireChanged() {
      pcallFAll(onChange);
    }

    public void set(A a) {
      if (neq(value, a)) {
        value = a;
        fireChanged();
      }
    }
  }

  static abstract public class CloseableIterableIterator<A> extends IterableIterator<A> implements AutoCloseable {

    public void close() throws Exception {
    }
  }

  static public class ExpiringMap2<A, B> extends AbstractMap<A, B> {

    public Map<A, Pair<Long, B>> byKey = new HashMap();

    public PriorityBlockingQueue<Pair<Long, A>> queue = new PriorityBlockingQueue();

    public long standardExpiryTime;

    public boolean renewOnOverwrite = true, renewOnGet;

    public Object onChange;

    public ExpiringMap2() {
    }

    public ExpiringMap2(long standardExpiryTime) {
      this.standardExpiryTime = standardExpiryTime;
    }

    public ExpiringMap2(long standardExpiryTime, Object onChange) {
      this.onChange = onChange;
      this.standardExpiryTime = standardExpiryTime;
    }

    synchronized public boolean clean() {
      boolean changes = false;
      Pair<Long, A> p;
      while ((p = queue.peek()) != null && sysTime() >= p.a) {
        p = queue.poll();
        Pair<Long, B> v = byKey.get(p.b);
        if (v != null) {
          byKey.remove(p.b);
          changes = true;
          change();
        }
      }
      return changes;
    }

    public void change() {
      callF(onChange);
    }

    synchronized public B put(A a, B b) {
      clean();
      long timeout = sysTime() + standardExpiryTime;
      Pair<Long, B> p = byKey.get(a);
      if (p != null && renewOnOverwrite)
        queue.remove(new Pair(p.a, a));
      byKey.put(a, pair(timeout, b));
      change();
      if (p == null || renewOnOverwrite)
        queue.add(new Pair(timeout, a));
      return pairB(p);
    }

    synchronized public B remove(Object a) {
      clean();
      Pair<Long, B> p = byKey.get(a);
      if (p == null)
        return null;
      queue.remove(new Pair(p.a, a));
      byKey.remove(a);
      change();
      return p.b;
    }

    synchronized public B get(Object a) {
      clean();
      Pair<Long, B> p = byKey.get(a);
      if (renewOnGet && p != null) {
        queue.remove(new Pair(p.a, a));
        long timeout = sysTime() + standardExpiryTime;
        byKey.put((A) a, pair(timeout, p.b));
        queue.add(new Pair(timeout, a));
      }
      return pairB(p);
    }

    synchronized public Set<Map.Entry<A, B>> entrySet() {
      clean();
      return synchronizedSet(mapValues("pairB", byKey).entrySet());
    }

    synchronized public Set<A> keySet() {
      clean();
      return synchronizedSet(byKey.keySet());
    }

    synchronized public int size() {
      clean();
      return byKey.size();
    }

    public void setStandardExpiryTime(long ms) {
      standardExpiryTime = ms;
    }

    synchronized public ExpiringMap2<A, B> setMap(Map innerMap) {
      byKey = innerMap;
      return this;
    }
  }

  static public interface IF2<A, B, C> {

    public C get(A a, B b);
  }

  static public class MechMode implements IFieldsToList {

    public Object readMode;

    public Object writeMode;

    public MechMode() {
    }

    public MechMode(Object readMode, Object writeMode) {
      this.writeMode = writeMode;
      this.readMode = readMode;
    }

    public String toString() {
      return shortClassName(this) + "(" + readMode + ", " + writeMode + ")";
    }

    public boolean equals(Object o) {
      if (!(o instanceof MechMode))
        return false;
      MechMode __1 = (MechMode) o;
      return eq(readMode, __1.readMode) && eq(writeMode, __1.writeMode);
    }

    public int hashCode() {
      int h = -866263200;
      h = boostHashCombine(h, _hashCode(readMode));
      h = boostHashCombine(h, _hashCode(writeMode));
      return h;
    }

    public Object[] _fieldsToList() {
      return new Object[] { readMode, writeMode };
    }
  }

  static public class Fail extends RuntimeException implements IFieldsToList {

    public Object[] objects;

    public Fail() {
    }

    public Fail(Object... objects) {
      this.objects = objects;
    }

    public String toString() {
      return shortClassName(this) + "(" + objects + ")";
    }

    public Object[] _fieldsToList() {
      return new Object[] { objects };
    }
  }

  static public class Pair<A, B> implements Comparable<Pair<A, B>> {

    public A a;

    public B b;

    public Pair() {
    }

    public Pair(A a, B b) {
      this.b = b;
      this.a = a;
    }

    public int hashCode() {
      return hashCodeFor(a) + 2 * hashCodeFor(b);
    }

    public boolean equals(Object o) {
      if (o == this)
        return true;
      if (!(o instanceof Pair))
        return false;
      Pair t = (Pair) o;
      return eq(a, t.a) && eq(b, t.b);
    }

    public String toString() {
      return "<" + a + ", " + b + ">";
    }

    public int compareTo(Pair<A, B> p) {
      if (p == null)
        return 1;
      int i = ((Comparable<A>) a).compareTo(p.a);
      if (i != 0)
        return i;
      return ((Comparable<B>) b).compareTo(p.b);
    }
  }

  static public interface IFieldsToList {

    public Object[] _fieldsToList();
  }

  static abstract public class DialogIO implements AutoCloseable {

    public String line;

    public boolean eos, loud, noClose;

    public Lock lock = lock();

    abstract public String readLineImpl();

    abstract public boolean isStillConnected();

    abstract public void sendLine(String line);

    abstract public boolean isLocalConnection();

    abstract public Socket getSocket();

    public int getPort() {
      Socket s = getSocket();
      return s == null ? 0 : s.getPort();
    }

    public boolean helloRead = false;

    public int shortenOutputTo = 500;

    public String readLineNoBlock() {
      String l = line;
      line = null;
      return l;
    }

    public boolean waitForLine() {
      try {
        ping();
        if (line != null)
          return true;
        line = readLineImpl();
        if (line == null)
          eos = true;
        return line != null;
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    public String readLine() {
      waitForLine();
      helloRead = true;
      return readLineNoBlock();
    }

    public String ask(String s, Object... args) {
      if (loud)
        return askLoudly(s, args);
      if (!helloRead)
        readLine();
      if (args.length != 0)
        s = format3(s, args);
      sendLine(s);
      return readLine();
    }

    public String askLoudly(String s, Object... args) {
      if (!helloRead)
        readLine();
      if (args.length != 0)
        s = format3(s, args);
      print("> " + shorten(s, shortenOutputTo));
      sendLine(s);
      String answer = readLine();
      print("< " + shorten(answer, shortenOutputTo));
      return answer;
    }

    public void pushback(String l) {
      if (line != null)
        throw fail();
      line = l;
      helloRead = false;
    }
  }

  static abstract public class DialogHandler {

    abstract public void run(DialogIO io);
  }

  static public interface ISetter<A> {

    public void set(A a);
  }

  static public interface IVar<A> extends IF0<A> {

    public void set(A a);

    public A get();

    default public boolean has() {
      return get() != null;
    }

    default public void clear() {
      set(null);
    }
  }

  static public class LetterLayout implements LayoutManager {

    public String[] lines;

    public Map<String, Component> map = new TreeMap();

    public Map<Component, String> constraints = new HashMap();

    public RC[] rows;

    public RC[] cols;

    public Cell[][] cells;

    public int spacingX = 10, spacingY = 10;

    public int insetTop, insetBottom, insetLeft, insetRight;

    public int template;

    public boolean formWideLeftSide, formWideRightSide;

    static final public int STALACTITE = 1, LEFT_ALIGNED_ROW = 2, CENTERED_ROW = 3, FORM = 4, RIGHT_ALIGNED_ROW = 5;

    public boolean debug = false;

    public void setLeftBorder(int border) {
      insetLeft = border;
    }

    public void setRightBorder(int border) {
      insetRight = border;
    }

    public static JComponent withBorder(JComponent component, int border) {
      JPanel panel = new JPanel(new LetterLayout("C").setBorder(border));
      panel.add("C", component);
      return panel;
    }

    public static JPanel panel(String... lines) {
      return new JPanel(new LetterLayout(lines));
    }

    public static JPanel stalactitePanel() {
      return new JPanel(stalactite());
    }

    static public class DummyComponent extends JComponent {
    }

    static public class Cell {

      public boolean aux = false;

      public int minWidth, minHeight;

      public Component component;

      public int colspan, rowspan;

      public double weightX, weightY;
    }

    static public class RC {

      public int min;

      public double weightSum;

      public int start;

      public int minEnd;
    }

    public LetterLayout(int template) {
      this.template = template;
    }

    public LetterLayout(String... lines) {
      this.lines = lines;
    }

    public void layoutContainer(Container container) {
      prepareLayout(container);
      if (debug)
        System.out.println("Container size: " + container.getSize());
      Insets insets = getInsets(container);
      for (int r = 0; r < rows.length; r++) {
        for (int i = 0; i < cols.length; ) {
          Cell cell = cells[i][r];
          if (cell.aux)
            ++i;
          else {
            if (cell.component != null) {
              int x1 = cols[i].start;
              int y1 = rows[r].start;
              int x2 = i + cell.colspan < cols.length ? cols[i + cell.colspan].start - spacingX : container.getWidth() - insets.right;
              int y2 = r + cell.rowspan < rows.length ? rows[r + cell.rowspan].start - spacingY : container.getHeight() - insets.bottom;
              if (debug)
                System.out.println("Layouting (" + i + ", " + r + ", " + cell.component.getClass().getName() + "): " + x1 + " " + y1 + " " + x2 + " " + y2);
              cell.component.setBounds(x1, y1, x2 - x1, y2 - y1);
            }
            i += cells[i][r].colspan;
          }
        }
      }
    }

    final public void prepareLayout(Container container) {
      applyTemplate(container);
      int numRows = lines.length, numCols = lines[0].length();
      for (int i = 1; i < numRows; i++) if (lines[i].length() != numCols)
        throw new IllegalArgumentException("Lines have varying length");
      cells = new Cell[numCols][numRows];
      rows = new RC[numRows];
      cols = new RC[numCols];
      for (int r = 0; r < numRows; r++) rows[r] = new RC();
      for (int i = 0; i < numCols; i++) cols[i] = new RC();
      for (int r = 0; r < numRows; r++) for (int i = 0; i < numCols; i++) cells[i][r] = new Cell();
      for (int r = 0; r < numRows; r++) {
        String line = lines[r];
        for (int i = 0; i < numCols; ) {
          Cell cell = cells[i][r];
          if (cell.aux) {
            ++i;
            continue;
          }
          char ch = line.charAt(i);
          int iNext = i;
          do ++iNext; while (iNext < numCols && ch == line.charAt(iNext));
          int rNext = r;
          do ++rNext; while (rNext < numRows && ch == lines[rNext].charAt(i));
          cell.weightX = numCols == 1 || iNext > i + 1 ? 1.0 : 0.0;
          cell.weightY = numRows == 1 || rNext > r + 1 ? 1.0 : 0.0;
          Component c = map.get(String.valueOf(ch));
          cell.component = c;
          if (c != null) {
            cell.minWidth = c.getMinimumSize().width + spacingX;
            cell.minHeight = getMinimumHeight(c) + spacingY;
          }
          cell.colspan = iNext - i;
          cell.rowspan = rNext - r;
          if (cell.colspan == 1)
            cols[i].min = Math.max(cols[i].min, cell.minWidth);
          if (cell.rowspan == 1)
            rows[r].min = Math.max(rows[r].min, cell.minHeight);
          for (int r2 = r; r2 < rNext; r2++) for (int i2 = i; i2 < iNext; i2++) if (r2 != r || i2 != i)
            cells[i2][r2].aux = true;
          i = iNext;
        }
      }
      while (true) {
        for (int i = 0; i < numCols; i++) {
          int minStart = i == 0 ? 0 : cols[i - 1].minEnd;
          double weightStart = i == 0 ? 0.0 : cols[i - 1].weightSum;
          for (int r = 0; r < numRows; r++) {
            Cell cell = cells[i][r];
            if (!cell.aux) {
              RC rc = cols[i + cell.colspan - 1];
              rc.minEnd = Math.max(rc.minEnd, minStart + cell.minWidth);
              rc.weightSum = Math.max(rc.weightSum, weightStart + cell.weightX);
            }
          }
        }
        for (int r = 0; r < numRows; r++) {
          int minStart = r == 0 ? 0 : rows[r - 1].minEnd;
          double weightStart = r == 0 ? 0.0 : rows[r - 1].weightSum;
          for (int i = 0; i < numCols; i++) {
            Cell cell = cells[i][r];
            if (!cell.aux) {
              RC rc = rows[r + cell.rowspan - 1];
              rc.minEnd = Math.max(rc.minEnd, minStart + cell.minHeight);
              rc.weightSum = Math.max(rc.weightSum, weightStart + cell.weightY);
            }
          }
        }
        if (allWeightsZero(cols)) {
          for (int r = 0; r < numRows; r++) for (int i = 0; i < numCols; i++) cells[i][r].weightX = 1.0;
          continue;
        }
        if (allWeightsZero(rows)) {
          for (int r = 0; r < numRows; r++) for (int i = 0; i < numCols; i++) cells[i][r].weightY = 1.0;
          continue;
        }
        break;
      }
      Insets insets = getInsets(container);
      determineStarts(cols, insets.left, container.getWidth() - insets.left - insets.right + spacingX, spacingX);
      determineStarts(rows, insets.top, container.getHeight() - insets.top - insets.bottom + spacingY, spacingY);
    }

    final public boolean allWeightsZero(RC[] rcs) {
      for (int i = 0; i < rcs.length; i++) if (rcs[i].weightSum != 0.0)
        return false;
      return true;
    }

    static public int getMinimumHeight(Component c) {
      return c.getMinimumSize().height;
    }

    final public void applyTemplate(Container container) {
      if (template == STALACTITE) {
        Component[] components = container.getComponents();
        lines = new String[components.length + 2];
        map.clear();
        for (int i = 0; i < components.length; i++) {
          String s = String.valueOf(makeIndexChar(i));
          map.put(s, components[i]);
          lines[i] = s;
        }
        lines[components.length] = lines[components.length + 1] = " ";
      } else if (template == FORM) {
        Component[] components = container.getComponents();
        int numRows = components.length / 2;
        lines = new String[numRows + 2];
        map.clear();
        for (int row = 0; row < numRows; row++) {
          String lower = String.valueOf(makeIndexChar(row));
          String upper = String.valueOf(makeAlternateIndexChar(row));
          Component rightComponent = components[row * 2 + 1];
          if (rightComponent instanceof DummyComponent)
            upper = lower;
          lines[row] = (formWideLeftSide ? lower + lower : lower) + (formWideRightSide ? upper + upper : upper);
          map.put(lower, components[row * 2]);
          if (!(rightComponent instanceof DummyComponent))
            map.put(upper, rightComponent);
        }
        lines[numRows] = lines[numRows + 1] = (formWideLeftSide ? "  " : " ") + (formWideRightSide ? "  " : " ");
      } else if (template == LEFT_ALIGNED_ROW) {
        lines = new String[] { makeSingleRow(container) + RIGHT_CHAR + RIGHT_CHAR };
      } else if (template == CENTERED_ROW) {
        lines = new String[] { "" + LEFT_CHAR + LEFT_CHAR + makeSingleRow(container) + RIGHT_CHAR + RIGHT_CHAR };
      } else if (template == RIGHT_ALIGNED_ROW) {
        lines = new String[] { "" + LEFT_CHAR + LEFT_CHAR + makeSingleRow(container) };
      }
    }

    final public String makeSingleRow(Container container) {
      Component[] components = container.getComponents();
      StringBuffer buf = new StringBuffer();
      map.clear();
      for (int i = 0; i < components.length; i++) {
        var c = components[i];
        String s = constraints.get(c);
        if (isOneOfSingleChars(s, LEFT_CHAR, RIGHT_CHAR))
          continue;
        s = str(makeAlternateIndexChar(i));
        setConstraints(c, s);
        buf.append(s);
      }
      return buf.toString();
    }

    static public void determineStarts(RC[] rcs, int start, int totalSize, int spacing) {
      int minTotal = rcs[rcs.length - 1].minEnd;
      double weightSum = rcs[rcs.length - 1].weightSum;
      int spare = (int) ((totalSize - minTotal) / (weightSum == 0.0 ? 1.0 : weightSum));
      int x = start, minSum = 0;
      double prevWeightSum = 0.0;
      for (int i = 0; i < rcs.length; i++) {
        int width = rcs[i].minEnd - minSum + (int) ((rcs[i].weightSum - prevWeightSum) * spare) - spacing;
        rcs[i].start = x;
        x += width + spacing;
        prevWeightSum = rcs[i].weightSum;
        minSum = rcs[i].minEnd;
      }
    }

    public void addLayoutComponent(String s, Component component) {
      setConstraints(component, s);
    }

    public void setConstraints(Component component, String s) {
      mapPutOrRemove(map, s, component);
      mapPutOrRemove(constraints, component, s);
    }

    public void removeLayoutComponent(Component component) {
      map.values().remove(component);
      constraints.remove(component);
    }

    public Dimension minimumLayoutSize(Container container) {
      prepareLayout(container);
      Insets insets = getInsets(container);
      Dimension result = new Dimension(insets.left + cols[cols.length - 1].minEnd + insets.right - spacingX, insets.top + rows[rows.length - 1].minEnd + insets.bottom - spacingY);
      return result;
    }

    final public Insets getInsets(Container container) {
      Insets insets = container.getInsets();
      return new Insets(insets.top + insetTop, insets.left + insetLeft, insets.bottom + insetBottom, insets.right + insetRight);
    }

    public Dimension preferredLayoutSize(Container container) {
      return minimumLayoutSize(container);
    }

    public LetterLayout setSpacing(int x, int y) {
      spacingX = x;
      spacingY = y;
      return this;
    }

    public LetterLayout setSpacing(int spacing) {
      return setSpacing(spacing, spacing);
    }

    public LetterLayout setBorder(int top, int left, int bottom, int right) {
      insetTop = top;
      insetLeft = left;
      insetBottom = bottom;
      insetRight = right;
      return this;
    }

    public LetterLayout setBorder(int inset) {
      return setBorder(inset, inset, inset, inset);
    }

    public LetterLayout setTopBorder(int inset) {
      insetTop = inset;
      return this;
    }

    public static LetterLayout stalactite() {
      return new LetterLayout(STALACTITE);
    }

    public static LetterLayout leftAlignedRow() {
      return new LetterLayout(LEFT_ALIGNED_ROW);
    }

    public static LetterLayout leftAlignedRow(int spacing) {
      return leftAlignedRow().setSpacing(spacing);
    }

    public static LetterLayout centeredRow() {
      return new LetterLayout(CENTERED_ROW);
    }

    public static LetterLayout rightAlignedRow() {
      return new LetterLayout(RIGHT_ALIGNED_ROW);
    }

    public static JPanel rightAlignedRowPanel(JComponent... components) {
      return makePanel(new LetterLayout(RIGHT_ALIGNED_ROW), components);
    }

    static public JPanel makePanel(LetterLayout letterLayout, JComponent[] components) {
      JPanel panel = new JPanel(letterLayout);
      for (JComponent component : components) {
        panel.add(component);
      }
      return panel;
    }

    public static LetterLayout form() {
      LetterLayout letterLayout = new LetterLayout(FORM);
      letterLayout.formWideLeftSide = true;
      letterLayout.formWideRightSide = true;
      return letterLayout;
    }

    public static LetterLayout formWideRightSide() {
      LetterLayout letterLayout = new LetterLayout(FORM);
      letterLayout.formWideRightSide = true;
      return letterLayout;
    }

    public static Component getDummyComponent() {
      return new DummyComponent();
    }

    public static JPanel newPanel(String... lines) {
      return new JPanel(new LetterLayout(lines));
    }

    public boolean isDebug() {
      return debug;
    }

    public void setDebug(boolean debug) {
      this.debug = debug;
    }

    public static char makeIndexChar(int idx) {
      return (char) ('a' + idx * 2);
    }

    public static char makeAlternateIndexChar(int idx) {
      return (char) ('b' + idx * 2);
    }

    public static char LEFT_CHAR = ',', RIGHT_CHAR = '.';

    public static void main(String[] args) {
      System.out.println((int) makeIndexChar(0));
      System.out.println((int) makeAlternateIndexChar(0));
      System.out.println((int) makeIndexChar(32000));
      System.out.println((int) makeAlternateIndexChar(32000));
      System.out.println((int) LEFT_CHAR);
      System.out.println((int) RIGHT_CHAR);
    }
  }

  static public class Cache<A> {

    public Object maker;

    public A value;

    public long loaded;

    static public boolean debug = false;

    public long changeCount;

    public Lock lock = lock();

    public Cache() {
    }

    public Cache(Object maker) {
      this.maker = maker;
    }

    public Cache(IF0<A> maker) {
      this.maker = maker;
    }

    public A get() {
      if (hasLock(lock))
        return value;
      Lock __0 = lock;
      lock(__0);
      try {
        if (loaded == 0) {
          value = make();
          changeCount++;
          loaded = sysNow();
        }
        return value;
      } finally {
        unlock(__0);
      }
    }

    public void clear() {
      Lock __1 = lock;
      lock(__1);
      try {
        if (debug && loaded != 0)
          print("Clearing cache");
        value = null;
        changeCount++;
        loaded = 0;
      } finally {
        unlock(__1);
      }
    }

    public void clear(double seconds) {
      Lock __2 = lock;
      lock(__2);
      try {
        if (seconds != 0 && loaded != 0 && sysNow() >= loaded + seconds * 1000)
          clear();
      } finally {
        unlock(__2);
      }
    }

    public void set(A a) {
      Lock __3 = lock;
      lock(__3);
      try {
        value = a;
        ++changeCount;
        loaded = sysNow();
      } finally {
        unlock(__3);
      }
    }

    public A make() {
      return (A) callF(maker);
    }
  }

  static public boolean isAbstract(Class c) {
    return (c.getModifiers() & Modifier.ABSTRACT) != 0;
  }

  static public boolean isAbstract(Method m) {
    return (m.getModifiers() & Modifier.ABSTRACT) != 0;
  }

  static public boolean reflection_isForbiddenMethod(Method m) {
    return m.getDeclaringClass() == Object.class && eqOneOf(m.getName(), "finalize", "clone", "registerNatives");
  }

  static public <A, B> void multiMapPut(Map<A, List<B>> map, A a, B b) {
    List<B> l = map.get(a);
    if (l == null)
      map.put(a, l = new ArrayList());
    l.add(b);
  }

  static public Set<Class> allInterfacesImplementedBy(Class c) {
    if (c == null)
      return null;
    HashSet<Class> set = new HashSet();
    allInterfacesImplementedBy_find(c, set);
    return set;
  }

  static public void allInterfacesImplementedBy_find(Class c, Set<Class> set) {
    if (c.isInterface() && !set.add(c))
      return;
    do {
      for (Class intf : c.getInterfaces()) allInterfacesImplementedBy_find(intf, set);
    } while ((c = c.getSuperclass()) != null);
  }

  static public Method findMethod(Object o, String method, Object... args) {
    return findMethod_cached(o, method, args);
  }

  static public boolean findMethod_checkArgs(Method m, Object[] args, boolean debug) {
    Class<?>[] types = m.getParameterTypes();
    if (types.length != args.length) {
      if (debug)
        System.out.println("Bad parameter length: " + args.length + " vs " + types.length);
      return false;
    }
    for (int i = 0; i < types.length; i++) if (!(args[i] == null || isInstanceX(types[i], args[i]))) {
      if (debug)
        System.out.println("Bad parameter " + i + ": " + args[i] + " vs " + types[i]);
      return false;
    }
    return true;
  }

  static public boolean call_checkArgs(Method m, Object[] args, boolean debug) {
    Class<?>[] types = m.getParameterTypes();
    if (types.length != args.length) {
      if (debug)
        print("Bad parameter length: " + args.length + " vs " + types.length);
      return false;
    }
    for (int i = 0; i < types.length; i++) {
      Object arg = args[i];
      if (!(arg == null ? !types[i].isPrimitive() : isInstanceX(types[i], arg))) {
        if (debug)
          print("Bad parameter " + i + ": " + arg + " vs " + types[i]);
        return false;
      }
    }
    return true;
  }

  static public Method findStaticMethod(Class c, String method, Object... args) {
    Class _c = c;
    while (c != null) {
      for (Method m : c.getDeclaredMethods()) {
        if (!m.getName().equals(method))
          continue;
        if ((m.getModifiers() & Modifier.STATIC) == 0 || !findStaticMethod_checkArgs(m, args))
          continue;
        return m;
      }
      c = c.getSuperclass();
    }
    return null;
  }

  static public boolean findStaticMethod_checkArgs(Method m, Object[] args) {
    Class<?>[] types = m.getParameterTypes();
    if (types.length != args.length)
      return false;
    for (int i = 0; i < types.length; i++) if (!(args[i] == null || isInstanceX(types[i], args[i])))
      return false;
    return true;
  }

  static public <A> Set<A> synchroLinkedHashSet() {
    return Collections.synchronizedSet(new LinkedHashSet<A>());
  }

  static public <A> List<A> syncList() {
    return synchroList();
  }

  static public <A> List<A> syncList(List<A> l) {
    return synchroList(l);
  }

  static public FixedRateTimer doEvery_daemon_highPriority(long delay, final Object r) {
    return doEvery_daemon_highPriority(delay, delay, r);
  }

  static public FixedRateTimer doEvery_daemon_highPriority(long delay, long firstDelay, final Object r) {
    return doEvery_daemon(delay, firstDelay, new Runnable() {

      public void run() {
        try {
          highThreadPriority();
          callF(r);
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "highThreadPriority();\r\n    callF(r);";
      }
    });
  }

  static public FixedRateTimer doEvery_daemon_highPriority(double delaySeconds, final Object r) {
    return doEvery_daemon_highPriority(toMS(delaySeconds), r);
  }

  static public void sleepSeconds(double s) {
    if (s > 0)
      sleep(round(s * 1000));
  }

  static public DialogIO talkTo(int port) {
    return talkTo("localhost", port);
  }

  static public int talkTo_defaultTimeout = 10000;

  static public int talkTo_timeoutForReads = 0;

  static public ThreadLocal<Map<String, DialogIO>> talkTo_byThread = new ThreadLocal();

  static public DialogIO talkTo(String ip, int port) {
    try {
      String full = ip + ":" + port;
      Map<String, DialogIO> map = talkTo_byThread.get();
      if (map != null && map.containsKey(full))
        return map.get(full);
      if (isLocalhost(ip) && port == vmPort())
        return talkToThisVM();
      return new talkTo_IO(ip, port);
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public class talkTo_IO extends DialogIO {

    public String ip;

    public int port;

    public Socket s;

    public Writer w;

    public BufferedReader in;

    public talkTo_IO(String ip, int port) {
      this.port = port;
      this.ip = ip;
      try {
        s = new Socket();
        try {
          if (talkTo_timeoutForReads != 0)
            s.setSoTimeout(talkTo_timeoutForReads);
          s.connect(new InetSocketAddress(ip, port), talkTo_defaultTimeout);
        } catch (Throwable e) {
          throw fail("Tried talking to " + ip + ":" + port, e);
        }
        w = new OutputStreamWriter(s.getOutputStream(), "UTF-8");
        in = new BufferedReader(new InputStreamReader(s.getInputStream(), "UTF-8"));
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    public boolean isLocalConnection() {
      return s.getInetAddress().isLoopbackAddress();
    }

    public boolean isStillConnected() {
      return !(eos || s.isClosed());
    }

    public void sendLine(String line) {
      try {
        Lock __0 = lock;
        lock(__0);
        try {
          w.write(line + "\n");
          w.flush();
        } finally {
          unlock(__0);
        }
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    public String readLineImpl() {
      try {
        return in.readLine();
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    public void close() {
      try {
        if (!noClose)
          s.close();
      } catch (IOException e) {
      }
    }

    public Socket getSocket() {
      return s;
    }
  }

  static public void pcallFAll(Collection l, Object... args) {
    if (l != null)
      for (Object f : cloneList(l)) pcallF(f, args);
  }

  static public void pcallFAll(Iterator it, Object... args) {
    while (it.hasNext()) pcallF(it.next(), args);
  }

  static public AutoCloseable tempAfterwards(final Object r) {
    return new AutoCloseable() {

      public void close() {
        callF(r);
      }
    };
  }

  static public String format(String pat, Object... args) {
    return format3(pat, args);
  }

  static public boolean hasLock(Lock lock) {
    return ((ReentrantLock) lock).isHeldByCurrentThread();
  }

  static public String mL_raw(String name) {
    return mechList_raw(name);
  }

  static public boolean eqOrSame(Object a, Object b) {
    return a == null ? b == null : a == b || b != null && a.equals(b);
  }

  static public void clear(Collection c) {
    if (c != null)
      c.clear();
  }

  static public void clear(Map map) {
    if (map != null)
      map.clear();
  }

  static public void add(BitSet bs, int i) {
    bs.set(i);
  }

  static public <A> boolean add(Collection<A> c, A a) {
    return c != null && c.add(a);
  }

  static public void add(Container c, Component x) {
    addToContainer(c, x);
  }

  static public UnsupportedOperationException unsupportedOperation() {
    throw new UnsupportedOperationException();
  }

  static public Q dm_q() {
    return dm_current_mandatory().q();
  }

  static public void dm_q(Runnable r) {
    dm_inQ(r);
  }

  static public void dm_q(DynModule module, Runnable r) {
    module.q().add(r);
  }

  static public <A> A dm_q(IF0<A> f) {
    return dm_evalInQ(if0ToF0(f));
  }

  static public File getSecretProgramDir() {
    return getSecretProgramDir(actualProgramID());
  }

  static public File getSecretProgramDir(String snippetID) {
    if (empty(snippetID))
      return javaxSecretDir();
    return newFile(javaxSecretDir(), formatSnippetID(snippetID));
  }

  static public byte[] base64decode(String s) {
    byte[] alphaToInt = base64decode_base64toint;
    int sLen = s.length();
    int numGroups = sLen / 4;
    if (4 * numGroups != sLen)
      throw new IllegalArgumentException("String length must be a multiple of four.");
    int missingBytesInLastGroup = 0;
    int numFullGroups = numGroups;
    if (sLen != 0) {
      if (s.charAt(sLen - 1) == '=') {
        missingBytesInLastGroup++;
        numFullGroups--;
      }
      if (s.charAt(sLen - 2) == '=')
        missingBytesInLastGroup++;
    }
    byte[] result = new byte[3 * numGroups - missingBytesInLastGroup];
    int inCursor = 0, outCursor = 0;
    for (int i = 0; i < numFullGroups; i++) {
      int ch0 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
      int ch1 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
      int ch2 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
      int ch3 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
      result[outCursor++] = (byte) ((ch0 << 2) | (ch1 >> 4));
      result[outCursor++] = (byte) ((ch1 << 4) | (ch2 >> 2));
      result[outCursor++] = (byte) ((ch2 << 6) | ch3);
    }
    if (missingBytesInLastGroup != 0) {
      int ch0 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
      int ch1 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
      result[outCursor++] = (byte) ((ch0 << 2) | (ch1 >> 4));
      if (missingBytesInLastGroup == 1) {
        int ch2 = base64decode_base64toint(s.charAt(inCursor++), alphaToInt);
        result[outCursor++] = (byte) ((ch1 << 4) | (ch2 >> 2));
      }
    }
    return result;
  }

  static public int base64decode_base64toint(char c, byte[] alphaToInt) {
    int result = alphaToInt[c];
    if (result < 0)
      throw new IllegalArgumentException("Illegal character " + c);
    return result;
  }

  static final public byte[] base64decode_base64toint = { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51 };

  static public String dropPrefixMandatory(String prefix, String s) {
    if (s.startsWith(prefix))
      return s.substring(prefix.length());
    else
      throw fail("Prefix " + prefix + " not found in: " + s);
  }

  static public long sysTime() {
    return sysNow();
  }

  static public void change() {
    callOpt(getOptMC("mainConcepts"), "allChanged");
  }

  static public <A, B> void put(Map<A, B> map, A a, B b) {
    if (map != null)
      map.put(a, b);
  }

  static public <A> void put(List<A> l, int i, A a) {
    if (l != null && i >= 0 && i < l(l))
      l.set(i, a);
  }

  static public <A> void remove(List<A> l, int i) {
    if (l != null && i >= 0 && i < l(l))
      l.remove(i);
  }

  static public <A> void remove(Collection<A> l, A a) {
    if (l != null)
      l.remove(a);
  }

  static public <A, B> B remove(Map<A, B> map, Object a) {
    return map == null ? null : map.remove(a);
  }

  static public <A, B> Set<Map.Entry<A, B>> entrySet(Map<A, B> map) {
    return _entrySet(map);
  }

  static public Map mapValues(Object func, Map map) {
    Map m = similarEmptyMap(map);
    for (Object key : keys(map)) m.put(key, callF(func, map.get(key)));
    return m;
  }

  static public <A, B, C> Map<A, C> mapValues(Map<A, B> map, IF1<B, C> f) {
    return mapValues(f, map);
  }

  static public <A, B, C> Map<A, C> mapValues(IF1<B, C> f, Map<A, B> map) {
    Map m = similarEmptyMap(map);
    for (Map.Entry<? extends A, ? extends B> __0 : _entrySet(map)) {
      A key = __0.getKey();
      B val = __0.getValue();
      m.put(key, f.get(val));
    }
    return m;
  }

  static public Map mapValues(Map map, Object func) {
    return mapValues(func, map);
  }

  static public <A, B> Set<A> keySet(Map<A, B> map) {
    return map == null ? new HashSet() : map.keySet();
  }

  static public Set keySet(Object map) {
    return keys((Map) map);
  }

  static public <A> Set<A> keySet(MultiSet<A> ms) {
    return ms.keySet();
  }

  static public String shortClassName(Object o) {
    if (o == null)
      return null;
    Class c = o instanceof Class ? (Class) o : o.getClass();
    String name = c.getName();
    return shortenClassName(name);
  }

  static public int boostHashCombine(int a, int b) {
    return a ^ (b + 0x9e3779b9 + (a << 6) + (a >> 2));
  }

  static public int _hashCode(Object a) {
    return a == null ? 0 : a.hashCode();
  }

  static public int hashCodeFor(Object a) {
    return a == null ? 0 : a.hashCode();
  }

  static volatile public boolean readLine_noReadLine = false;

  static public String readLine_lastInput;

  static public String readLine_prefix = "[] ";

  static public String readLine() {
    if (readLine_noReadLine)
      return null;
    String s = readLineHidden();
    if (s != null) {
      readLine_lastInput = s;
      print(readLine_prefix + s);
    }
    return s;
  }

  static public <A> A set(A o, String field, Object value) {
    if (o == null)
      return null;
    if (o instanceof Class)
      set((Class) o, field, value);
    else
      try {
        Field f = set_findField(o.getClass(), field);
        makeAccessible(f);
        smartSet(f, o, value);
      } catch (Exception e) {
        throw new RuntimeException(e);
      }
    return o;
  }

  static public void set(Class c, String field, Object value) {
    if (c == null)
      return;
    try {
      Field f = set_findStaticField(c, field);
      makeAccessible(f);
      smartSet(f, null, value);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

  static public Field set_findStaticField(Class<?> c, String field) {
    Class _c = c;
    do {
      for (Field f : _c.getDeclaredFields()) if (f.getName().equals(field) && (f.getModifiers() & java.lang.reflect.Modifier.STATIC) != 0)
        return f;
      _c = _c.getSuperclass();
    } while (_c != null);
    throw new RuntimeException("Static field '" + field + "' not found in " + c.getName());
  }

  static public Field set_findField(Class<?> c, String field) {
    Class _c = c;
    do {
      for (Field f : _c.getDeclaredFields()) if (f.getName().equals(field))
        return f;
      _c = _c.getSuperclass();
    } while (_c != null);
    throw new RuntimeException("Field '" + field + "' not found in " + c.getName());
  }

  static public void set(BitSet bs, int idx) {
    {
      if (bs != null)
        bs.set(idx);
    }
  }

  static public boolean isOneOfSingleChars(String s, char... chars) {
    if (l(s) != 1)
      return false;
    char real = s.charAt(0);
    for (char c : unnullForIteration(chars)) if (real == c)
      return true;
    return false;
  }

  static public long sysNow() {
    ping();
    return System.nanoTime() / 1000000;
  }

  static public Method findMethod_cached(Object o, String method, Object... args) {
    try {
      if (o == null)
        return null;
      if (o instanceof Class) {
        _MethodCache cache = callOpt_getCache(((Class) o));
        List<Method> methods = cache.cache.get(method);
        if (methods != null)
          for (Method m : methods) if (isStaticMethod(m) && findMethod_checkArgs(m, args, false))
            return m;
        return null;
      } else {
        _MethodCache cache = callOpt_getCache(o.getClass());
        List<Method> methods = cache.cache.get(method);
        if (methods != null)
          for (Method m : methods) if (findMethod_checkArgs(m, args, false))
            return m;
        return null;
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public FixedRateTimer doEvery_daemon(long delay, final Object r) {
    return doEvery_daemon(delay, delay, r);
  }

  static public FixedRateTimer doEvery_daemon(long delay, long firstDelay, final Object r) {
    FixedRateTimer timer = new FixedRateTimer(true);
    timer.scheduleAtFixedRate(smartTimerTask(r, timer, delay), firstDelay, delay);
    return timer;
  }

  static public FixedRateTimer doEvery_daemon(double delaySeconds, final Object r) {
    return doEvery_daemon(toMS(delaySeconds), r);
  }

  static public void highThreadPriority() {
    currentThread().setPriority(Thread.NORM_PRIORITY + 1);
  }

  static public long toMS(double seconds) {
    return (long) (seconds * 1000);
  }

  static volatile public boolean sleep_noSleep = false;

  static public void sleep(long ms) {
    ping();
    if (ms < 0)
      return;
    if (isAWTThread() && ms > 100)
      throw fail("Should not sleep on AWT thread");
    try {
      Thread.sleep(ms);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

  static public void sleep() {
    try {
      if (sleep_noSleep)
        throw fail("nosleep");
      print("Sleeping.");
      sleepQuietly();
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public long round(double d) {
    return Math.round(d);
  }

  static public String round(String s) {
    return roundBracket(s);
  }

  static public boolean isLocalhost(String ip) {
    return isLoopbackIP(ip) || eqic(ip, "localhost");
  }

  static public int vmPort() {
    return myVMPort();
  }

  static public DialogIO talkToThisVM() {
    return new talkToThisVM_IO();
  }

  static public class talkToThisVM_IO extends DialogIO {

    public List<String> answers = ll(thisVMGreeting());

    public boolean isLocalConnection() {
      return true;
    }

    public boolean isStillConnected() {
      return true;
    }

    public int getPort() {
      return vmPort();
    }

    public void sendLine(String line) {
      answers.add(or2(sendToThisVM_newThread(line), "?"));
    }

    public String readLineImpl() {
      try {
        return popFirst(answers);
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    public void close() {
    }

    public Socket getSocket() {
      return null;
    }
  }

  static public void addToContainer(Container a, Component... b) {
    if (a == null)
      return;
    {
      swing(new Runnable() {

        public void run() {
          try {
            for (Component c : unnullForIteration(b)) if (c != null)
              a.add(c);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "for (Component c : unnullForIteration(b))\r\n      if (c != null) \r\n        a.a...";
        }
      });
    }
  }

  static public void dm_inQ(Runnable r) {
    dm_q().add(r);
  }

  static public void dm_inQ(DynModule mod, Runnable r) {
    dm_q(mod, r);
  }

  static public <A> A dm_evalInQ(F0<A> f) {
    return dm_evalInQ(dm_current_mandatory(), f);
  }

  static public <A> A dm_evalInQ(IF0<A> f) {
    return dm_evalInQ(dm_current_mandatory(), if0ToF0(f));
  }

  static public <A> A dm_evalInQ(DynModule module, F0<A> f) {
    return evalInQ(module.q(), f);
  }

  static public <A> F0<A> if0ToF0(IF0<A> f) {
    return f == null ? null : new F0<A>() {

      public A get() {
        try {
          return f.get();
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "ret f.get();";
      }
    };
  }

  static public String actualProgramID() {
    return programID();
  }

  static public <A, B> Set<Map.Entry<A, B>> _entrySet(Map<A, B> map) {
    return map == null ? Collections.EMPTY_SET : map.entrySet();
  }

  static public String shortenClassName(String name) {
    if (name == null)
      return null;
    int i = lastIndexOf(name, "$");
    if (i < 0)
      i = lastIndexOf(name, ".");
    return i < 0 ? name : substring(name, i + 1);
  }

  static public String readLineHidden() {
    try {
      if (get(javax(), "readLine_reader") == null)
        set(javax(), "readLine_reader", new BufferedReader(new InputStreamReader(System.in, "UTF-8")));
      try {
        return ((BufferedReader) get(javax(), "readLine_reader")).readLine();
      } finally {
        consoleClearInput();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void smartSet(Field f, Object o, Object value) throws Exception {
    try {
      f.set(o, value);
    } catch (Exception e) {
      Class type = f.getType();
      if (type == int.class && value instanceof Long) {
        f.set(o, ((Long) value).intValue());
        return;
      }
      if (type == boolean.class && value instanceof String) {
        f.set(o, isTrueOrYes(((String) value)));
        return;
      }
      if (type == LinkedHashMap.class && value instanceof Map) {
        f.set(o, asLinkedHashMap((Map) value));
        return;
      }
      try {
        if (f.getType() == Concept.Ref.class) {
          f.set(o, ((Concept) o).new Ref((Concept) value));
          return;
        }
        if (o instanceof Concept.Ref) {
          f.set(o, ((Concept.Ref) o).get());
          return;
        }
      } catch (Throwable _e) {
      }
      throw e;
    }
  }

  static public TimerTask smartTimerTask(Object r, java.util.Timer timer, long delay) {
    return new SmartTimerTask(r, timer, delay, _threadInfo());
  }

  static public class SmartTimerTask extends TimerTask implements IFieldsToList {

    public Object r;

    public java.util.Timer timer;

    public long delay;

    public Object threadInfo;

    public SmartTimerTask() {
    }

    public SmartTimerTask(Object r, java.util.Timer timer, long delay, Object threadInfo) {
      this.threadInfo = threadInfo;
      this.delay = delay;
      this.timer = timer;
      this.r = r;
    }

    public String toString() {
      return shortClassName(this) + "(" + r + ", " + timer + ", " + delay + ", " + threadInfo + ")";
    }

    public Object[] _fieldsToList() {
      return new Object[] { r, timer, delay, threadInfo };
    }

    public long lastRun;

    public void run() {
      if (!licensed())
        timer.cancel();
      else {
        _threadInheritInfo(threadInfo);
        AutoCloseable __1 = tempActivity(r);
        try {
          lastRun = fixTimestamp(lastRun);
          long now = now();
          if (now >= lastRun + delay * 0.9) {
            lastRun = now;
            if (eq(false, pcallF(r)))
              timer.cancel();
          }
        } finally {
          _close(__1);
        }
      }
    }
  }

  static public Object sleepQuietly_monitor = new Object();

  static public void sleepQuietly() {
    try {
      assertFalse(isAWTThread());
      synchronized (sleepQuietly_monitor) {
        sleepQuietly_monitor.wait();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public String roundBracket(String s) {
    return "(" + s + ")";
  }

  static public String roundBracket(Object s) {
    return roundBracket(str(s));
  }

  static public boolean isLoopbackIP(String ip) {
    return eq(ip, "127.0.0.1");
  }

  static public int myVMPort() {
    List records = (List) (get(getJavaX(), "record_list"));
    Object android = last(records);
    return or0((Integer) get(android, "port"));
  }

  static public String thisVMGreeting() {
    List record_list = (List) (get(getJavaX(), "record_list"));
    Object android = first(record_list);
    return getString(android, "greeting");
  }

  static public String or2(String a, String b) {
    return nempty(a) ? a : b;
  }

  static public String or2(String a, String b, String c) {
    return or2(or2(a, b), c);
  }

  static public String sendToThisVM_newThread(String s, Object... args) {
    final String _s = format(s, args);
    try {
      return (String) evalInNewThread(new F0<Object>() {

        public Object get() {
          try {
            return callStaticAnswerMethod(getJavaX(), _s);
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "ret callStaticAnswerMethod(getJavaX(), _s);";
        }
      });
    } catch (Throwable e) {
      e = getInnerException(e);
      printStackTrace(e);
      return str(e);
    }
  }

  static public <A> A popFirst(List<A> l) {
    if (empty(l))
      return null;
    A a = first(l);
    l.remove(0);
    return a;
  }

  static public <A> A popFirst(Collection<A> l) {
    if (empty(l))
      return null;
    A a = first(l);
    l.remove(a);
    return a;
  }

  static public <A> List<A> popFirst(int n, List<A> l) {
    List<A> part = cloneSubList(l, 0, n);
    removeSubList(l, 0, n);
    return part;
  }

  static public <A> A evalInQ(Q q, final F0<A> f) {
    if (isInQ(q))
      return callF(f);
    final Var<Either<A, Throwable>> var = new Var();
    q.add(new Runnable() {

      public void run() {
        try {
          try {
            var.set(eitherA(callF(f)));
          } catch (Throwable e) {
            var.set(eitherB(e));
          }
        } catch (Exception __e) {
          throw rethrow(__e);
        }
      }

      public String toString() {
        return "try {\r\n      var.set(eitherA(callF(f)));\r\n    } catch (Throwable e) {\r\n      ...";
      }
    });
    return returnOrThrow_either(waitForVarToBeNotNull(var));
  }

  static public int lastIndexOf(String a, String b) {
    return a == null || b == null ? -1 : a.lastIndexOf(b);
  }

  static public int lastIndexOf(String a, char b) {
    return a == null ? -1 : a.lastIndexOf(b);
  }

  static public <A> int lastIndexOf(List<A> l, int i, A a) {
    if (l == null)
      return -1;
    for (i = min(l(l), i) - 1; i >= 0; i--) if (eq(l.get(i), a))
      return i;
    return -1;
  }

  static public <A> int lastIndexOf(List<A> l, A a) {
    if (l == null)
      return -1;
    for (int i = l(l) - 1; i >= 0; i--) if (eq(l.get(i), a))
      return i;
    return -1;
  }

  static public void consoleClearInput() {
    consoleSetInput("");
  }

  static public boolean isTrueOrYes(Object o) {
    return isTrueOpt(o) || o instanceof String && (eqicOneOf(((String) o), "1", "t", "true") || isYes(((String) o)));
  }

  static public <A, B> LinkedHashMap<A, B> asLinkedHashMap(Map<A, B> map) {
    if (map instanceof LinkedHashMap)
      return (LinkedHashMap) map;
    LinkedHashMap<A, B> m = new LinkedHashMap();
    if (map != null)
      synchronized (collectionMutex(map)) {
        m.putAll(map);
      }
    return m;
  }

  static public AutoCloseable tempActivity(Object r) {
    return null;
  }

  static public long fixTimestamp(long timestamp) {
    return timestamp > now() ? 0 : timestamp;
  }

  static public void assertFalse(Object o) {
    if (!(eq(o, false)))
      throw fail(str(o));
  }

  static public boolean assertFalse(boolean b) {
    if (b)
      throw fail("oops");
    return b;
  }

  static public boolean assertFalse(String msg, boolean b) {
    if (b)
      throw fail(msg);
    return b;
  }

  static public int or0(Integer i) {
    return i == null ? 0 : i;
  }

  static public long or0(Long l) {
    return l == null ? 0L : l;
  }

  static public double or0(Double d) {
    return d == null ? 0.0 : d;
  }

  static public String getString(Map map, Object key) {
    return map == null ? null : (String) map.get(key);
  }

  static public String getString(List l, int idx) {
    return (String) get(l, idx);
  }

  static public String getString(Object o, Object key) {
    if (o instanceof Map)
      return getString((Map) o, key);
    if (key instanceof String)
      return (String) getOpt(o, (String) key);
    throw fail("Not a string key: " + getClassName(key));
  }

  static public String getString(String key, Object o) {
    return getString(o, (Object) key);
  }

  static public Object evalInNewThread(final Object f) {
    final Flag flag = new Flag();
    final Var var = new Var();
    final Var<Throwable> exception = new Var();
    {
      startThread(new Runnable() {

        public void run() {
          try {
            try {
              var.set(callF(f));
            } catch (Throwable e) {
              exception.set(e);
            }
            flag.raise();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "try {\r\n      var.set(callF(f));\r\n    } catch (Throwable e) {\r\n      exception...";
        }
      });
    }
    flag.waitUntilUp();
    if (exception.has())
      throw rethrow(exception.get());
    return var.get();
  }

  static public String callStaticAnswerMethod(List bots, String s) {
    for (Object c : bots) try {
      String answer = callStaticAnswerMethod(c, s);
      if (!empty(answer))
        return answer;
    } catch (Throwable e) {
      print("Error calling " + getProgramID(c));
      e.printStackTrace();
    }
    return null;
  }

  static public String callStaticAnswerMethod(Object c, String s) {
    String answer = (String) callOpt(c, "answer", s, litlist(s));
    if (answer == null)
      answer = (String) callOpt(c, "answer", s);
    return emptyToNull(answer);
  }

  static public String callStaticAnswerMethod(String s) {
    return callStaticAnswerMethod(mc(), s);
  }

  static public String callStaticAnswerMethod(String s, List<String> history) {
    return callStaticAnswerMethod(mc(), s, history);
  }

  static public String callStaticAnswerMethod(Object c, String s, List<String> history) {
    String answer = (String) callOpt(c, "answer", s, history);
    if (answer == null)
      answer = (String) callOpt(c, "answer", s);
    return emptyToNull(answer);
  }

  static public boolean isInQ(Q q) {
    return q != null && isCurrentThread(q.rst.thread);
  }

  static public <A, B> Either<A, B> eitherA(A a) {
    return new Either(1, a);
  }

  static public <A, B> Either<A, B> eitherB(B b) {
    return new Either(2, b);
  }

  static public <A> A returnOrThrow_either(Either<A, Throwable> e) {
    if (isEitherB(e))
      throw rethrow(e.b());
    return eitherAOpt(e);
  }

  static public <A> A waitForVarToBeNotNull(Var<A> v) {
    try {
      synchronized (v) {
        while (!v.has()) v.wait();
        return v.get();
      }
    } catch (Exception __e) {
      throw rethrow(__e);
    }
  }

  static public void consoleSetInput(final String text) {
    if (headless())
      return;
    setTextAndSelectAll(consoleInputField(), text);
    focusConsole();
  }

  static public boolean isTrueOpt(Object o) {
    if (o instanceof Boolean)
      return ((Boolean) o).booleanValue();
    return false;
  }

  static public boolean eqicOneOf(String s, String... l) {
    for (String x : l) if (eqic(s, x))
      return true;
    return false;
  }

  static public List<String> isYes_yesses = litlist("y", "yes", "yeah", "y", "yup", "yo", "corect", "sure", "ok", "afirmative");

  static public boolean isYes(String s) {
    return isYes_yesses.contains(collapseWord(toLowerCase(get(parse3(s), 1))));
  }

  static public <A> ArrayList<A> litlist(A... a) {
    ArrayList l = new ArrayList(a.length);
    for (A x : a) l.add(x);
    return l;
  }

  static public String emptyToNull(String s) {
    return eq(s, "") ? null : s;
  }

  static public <A, B> Map<A, B> emptyToNull(Map<A, B> map) {
    return empty(map) ? null : map;
  }

  static public boolean isCurrentThread(Thread t) {
    return t != null && t == currentThread();
  }

  static public <A, B> boolean isEitherB(Either<A, B> e) {
    return eitherIsB(e);
  }

  static public <A, B> A eitherAOpt(Either<A, B> e) {
    return e != null && e.isA() ? e.a() : null;
  }

  static public JTextField setTextAndSelectAll(final JTextField tf, final String text) {
    if (tf != null) {
      swing(new Runnable() {

        public void run() {
          try {
            tf.setText(text);
            tf.selectAll();
          } catch (Exception __e) {
            throw rethrow(__e);
          }
        }

        public String toString() {
          return "tf.setText(text);\r\n    tf.selectAll();";
        }
      });
    }
    return tf;
  }

  static public JTextField consoleInputField() {
    Object console = get(getJavaX(), "console");
    return (JTextField) getOpt(console, "tfInput");
  }

  static public void focusConsole(String s) {
    setConsoleInput(s);
    focusConsole();
  }

  static public void focusConsole() {
    JComponent tf = consoleInputFieldOrComboBox();
    if (tf != null) {
      tf.requestFocus();
    }
  }

  static public String collapseWord(String s) {
    if (s == null)
      return "";
    StringBuilder buf = new StringBuilder();
    for (int i = 0; i < l(s); i++) if (i == 0 || !charactersEqualIC(s.charAt(i), s.charAt(i - 1)))
      buf.append(s.charAt(i));
    return buf.toString();
  }

  static public List<String> toLowerCase(List<String> strings) {
    List<String> x = new ArrayList();
    for (String s : strings) x.add(s.toLowerCase());
    return x;
  }

  static public String[] toLowerCase(String[] strings) {
    String[] x = new String[l(strings)];
    for (int i = 0; i < l(strings); i++) x[i] = strings[i].toLowerCase();
    return x;
  }

  static public String toLowerCase(String s) {
    return s == null ? "" : s.toLowerCase();
  }

  static public List<String> parse3(String s) {
    return dropPunctuation(javaTokPlusPeriod(s));
  }

  static public <A, B> boolean eitherIsB(Either<A, B> e) {
    return e != null && e.isB();
  }

  static public void setConsoleInput(String text) {
    consoleSetInput(text);
  }

  static public JComponent consoleInputFieldOrComboBox() {
    Object console = get(getJavaX(), "console");
    JComboBox cb = (JComboBox) (getOpt(console, "cbInput"));
    if (cb != null)
      return cb;
    return (JTextField) getOpt(console, "tfInput");
  }

  static public boolean charactersEqualIC(char c1, char c2) {
    if (c1 == c2)
      return true;
    char u1 = Character.toUpperCase(c1);
    char u2 = Character.toUpperCase(c2);
    if (u1 == u2)
      return true;
    return Character.toLowerCase(u1) == Character.toLowerCase(u2);
  }

  static public List<String> dropPunctuation_keep = ll("*", "<", ">");

  static public List<String> dropPunctuation(List<String> tok) {
    tok = new ArrayList<String>(tok);
    for (int i = 1; i < tok.size(); i += 2) {
      String t = tok.get(i);
      if (t.length() == 1 && !Character.isLetter(t.charAt(0)) && !Character.isDigit(t.charAt(0)) && !dropPunctuation_keep.contains(t)) {
        tok.set(i - 1, tok.get(i - 1) + tok.get(i + 1));
        tok.remove(i);
        tok.remove(i);
        i -= 2;
      }
    }
    return tok;
  }

  static public String dropPunctuation(String s) {
    return join(dropPunctuation(nlTok(s)));
  }

  static public List<String> javaTokPlusPeriod(String s) {
    List<String> tok = new ArrayList<String>();
    if (s == null)
      return tok;
    int l = s.length();
    int i = 0;
    while (i < l) {
      int j = i;
      char c;
      String cc;
      while (j < l) {
        c = s.charAt(j);
        cc = s.substring(j, Math.min(j + 2, l));
        if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
          ++j;
        else if (cc.equals("/*")) {
          do ++j; while (j < l && !s.substring(j, Math.min(j + 2, l)).equals("*/"));
          j = Math.min(j + 2, l);
        } else if (cc.equals("//")) {
          do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0);
        } else
          break;
      }
      tok.add(s.substring(i, j));
      i = j;
      if (i >= l)
        break;
      c = s.charAt(i);
      cc = s.substring(i, Math.min(i + 2, l));
      if (c == (char) 0x201C || c == (char) 0x201D)
        c = '"';
      if (c == '\'' || c == '"') {
        char opener = c;
        ++j;
        while (j < l) {
          char _c = s.charAt(j);
          if (_c == (char) 0x201C || _c == (char) 0x201D)
            _c = '"';
          if (_c == opener) {
            ++j;
            break;
          } else if (s.charAt(j) == '\\' && j + 1 < l)
            j += 2;
          else
            ++j;
        }
        if (j - 1 >= i + 1) {
          tok.add(opener + s.substring(i + 1, j - 1) + opener);
          i = j;
          continue;
        }
      } else if (Character.isJavaIdentifierStart(c))
        do ++j; while (j < l && (Character.isJavaIdentifierPart(s.charAt(j)) || s.charAt(j) == '\''));
      else if (Character.isDigit(c))
        do ++j; while (j < l && Character.isDigit(s.charAt(j)));
      else if (cc.equals("[[")) {
        do ++j; while (j + 1 < l && !s.substring(j, j + 2).equals("]]"));
        j = Math.min(j + 2, l);
      } else if (cc.equals("[=") && i + 2 < l && s.charAt(i + 2) == '[') {
        do ++j; while (j + 2 < l && !s.substring(j, j + 3).equals("]=]"));
        j = Math.min(j + 3, l);
      } else if (s.substring(j, Math.min(j + 3, l)).equals("..."))
        j += 3;
      else if (c == '$' || c == '#')
        do ++j; while (j < l && Character.isDigit(s.charAt(j)));
      else
        ++j;
      tok.add(s.substring(i, j));
      i = j;
    }
    if ((tok.size() % 2) == 0)
      tok.add("");
    return tok;
  }

  static public List<String> nlTok(String s) {
    return javaTokPlusPeriod(s);
  }

  static public class Either<A, B> {

    public byte which;

    public Object value;

    public Either() {
    }

    public Either(int which, Object value) {
      this.which = (byte) which;
      this.value = value;
    }

    public boolean isA() {
      return which == 1;
    }

    public boolean isB() {
      return which == 2;
    }

    public A a() {
      if (which != 1)
        _failMe();
      return (A) value;
    }

    public B b() {
      if (which != 2)
        _failMe();
      return (B) value;
    }

    public A aOpt() {
      return which != 1 ? null : (A) value;
    }

    public B bOpt() {
      return which != 2 ? null : (B) value;
    }

    public void _failMe() {
      throw fail("Either object is of wrong type: " + shortClassName(value));
    }

    public String toString() {
      return "Either" + (isA() ? "A" : "B") + "(" + value + ")";
    }
  }

  static public class FixedRateTimer extends java.util.Timer {

    public FixedRateTimer() {
      this(false);
    }

    public FixedRateTimer(boolean daemon) {
      this(defaultTimerName(), daemon);
    }

    public FixedRateTimer(String name) {
      this(name, false);
    }

    public FixedRateTimer(String name, boolean daemon) {
      super(name, daemon);
      _registerTimer(this);
    }

    public List<Entry> entries = synchroList();

    static public class Entry implements IFieldsToList {

      public TimerTask task;

      public long firstTime;

      public long period;

      public Entry() {
      }

      public Entry(TimerTask task, long firstTime, long period) {
        this.period = period;
        this.firstTime = firstTime;
        this.task = task;
      }

      public String toString() {
        return shortClassName(this) + "(" + task + ", " + firstTime + ", " + period + ")";
      }

      public Object[] _fieldsToList() {
        return new Object[] { task, firstTime, period };
      }
    }

    public void scheduleAtFixedRate(TimerTask task, long delay, long period) {
      entries.add(new Entry(task, now() + delay, period));
      super.scheduleAtFixedRate(task, delay, period);
    }

    public void cancel() {
      entries.clear();
      super.cancel();
    }

    public int purge() {
      entries.clear();
      return super.purge();
    }

    public FixedRateTimer changeRate(int newPeriod) {
      Object r = ((SmartTimerTask) first(entries).task).r;
      cancel();
      return doEvery(newPeriod, r);
    }
  }

  static public class Flag implements Runnable {

    public boolean up = false;

    public synchronized boolean raise() {
      if (!up) {
        up = true;
        notifyAll();
        return true;
      } else
        return false;
    }

    public synchronized void waitUntilUp() {
      while (!up) {
        try {
          wait();
        } catch (InterruptedException e) {
          e.printStackTrace();
        }
      }
    }

    public synchronized void waitUntilUp(long timeout) {
      if (!up) {
        try {
          wait(timeout);
        } catch (InterruptedException e) {
          e.printStackTrace();
        }
      }
    }

    public synchronized boolean isUp() {
      return up;
    }

    public boolean get() {
      return isUp();
    }

    public String toString() {
      return isUp() ? "up" : "down";
    }

    public void waitForThisOr(Flag otherFlag) {
      try {
        while (!isUp() && !otherFlag.isUp()) Thread.sleep(50);
      } catch (Exception __e) {
        throw rethrow(__e);
      }
    }

    public void run() {
      raise();
    }
  }

  static public String b(Object contents, Object... params) {
    return tag("b", contents, params);
  }

  static public <A, B> boolean isA(Either<A, B> e) {
    return eitherIsA(e);
  }

  static public String defaultTimerName_name;

  static public String defaultTimerName() {
    if (defaultTimerName_name == null)
      defaultTimerName_name = "A timer by " + programID();
    return defaultTimerName_name;
  }

  static public Set<java.util.Timer> _registerTimer_list = newWeakHashSet();

  static public void _registerTimer(java.util.Timer timer) {
    _registerTimer_list.add(timer);
  }

  static public void cleanMeUp__registerTimer() {
    cancelTimers(getAndClearList(_registerTimer_list));
  }

  static public FixedRateTimer doEvery(long delay, final Object r) {
    return doEvery(delay, delay, r);
  }

  static public FixedRateTimer doEvery(long delay, long firstDelay, final Object r) {
    FixedRateTimer timer = new FixedRateTimer(shorten(programID() + ": " + r, 80));
    timer.scheduleAtFixedRate(smartTimerTask(r, timer, toInt(delay)), toInt(firstDelay), toInt(delay));
    return vmBus_timerStarted(timer);
  }

  static public FixedRateTimer doEvery(double initialSeconds, double delaySeconds, final Object r) {
    return doEvery(toMS(delaySeconds), toMS(initialSeconds), r);
  }

  static public FixedRateTimer doEvery(double delaySeconds, final Object r) {
    return doEvery(toMS(delaySeconds), r);
  }

  static public String tag(String tag) {
    return htag(tag);
  }

  static public String tag(String tag, Object contents, Object... params) {
    return htag(tag, str(contents), params);
  }

  static public String tag(String tag, StringBuilder contents, Object... params) {
    return htag(tag, contents, params);
  }

  static public String tag(String tag, StringBuffer contents, Object... params) {
    return htag(tag, contents, params);
  }

  static public <A, B> boolean eitherIsA(Either<A, B> e) {
    return e != null && e.isA();
  }

  static public void cancelTimers(Collection timers) {
    for (Object timer : timers) cancelTimer(timer);
  }

  static public <A> A vmBus_timerStarted(A timer) {
    vmBus_send("timerStarted", timer, costCenter());
    return timer;
  }

  static public String htag(String tag) {
    return htag(tag, "");
  }

  static public String htag(String tag, Object contents, Object... params) {
    String openingTag = hopeningTag(tag, params);
    String s = str(contents);
    if (empty(s) && neqic(tag, "script"))
      return dropLast(openingTag) + "/>";
    return openingTag + s + "</" + tag + ">";
  }

  static public void cancelTimer(javax.swing.Timer timer) {
    if (timer != null)
      timer.stop();
  }

  static public void cancelTimer(java.util.Timer timer) {
    if (timer != null)
      timer.cancel();
  }

  static public void cancelTimer(Object o) {
    if (o instanceof java.util.Timer)
      cancelTimer((java.util.Timer) o);
    else if (o instanceof javax.swing.Timer)
      cancelTimer((javax.swing.Timer) o);
    else if (o instanceof AutoCloseable) {
      try {
        ((AutoCloseable) o).close();
      } catch (Throwable __e) {
        _handleException(__e);
      }
    }
  }

  static public Object costCenter() {
    return mc();
  }

  static public String hopeningTag(String tag, Map params) {
    return hopeningTag(tag, mapToParams(params));
  }

  static public String hopeningTag(String tag, Object... params) {
    StringBuilder buf = new StringBuilder();
    buf.append("<" + tag);
    params = unrollParams(params);
    for (int i = 0; i < l(params); i += 2) {
      String name = (String) get(params, i);
      Object val = get(params, i + 1);
      if (nempty(name) && val != null) {
        if (val == html_valueLessParam())
          buf.append(" " + name);
        else {
          String s = str(val);
          if (!empty(s))
            buf.append(" " + name + "=" + htmlQuote(s));
        }
      }
    }
    buf.append(">");
    return str(buf);
  }

  static public boolean neqic(String a, String b) {
    return !eqic(a, b);
  }

  static public boolean neqic(char a, char b) {
    return !eqic(a, b);
  }

  static public Object[] mapToParams(Map map) {
    return mapToObjectArray(map);
  }

  static public Object[] unrollParams(Object[] params) {
    if (l(params) == 1 && params[0] instanceof Map)
      return mapToParams((Map) params[0]);
    return params;
  }

  static public Object html_valueLessParam_cache;

  static public Object html_valueLessParam() {
    if (html_valueLessParam_cache == null)
      html_valueLessParam_cache = html_valueLessParam_load();
    return html_valueLessParam_cache;
  }

  static public Object html_valueLessParam_load() {
    return new Object();
  }

  static public String htmlQuote(String s) {
    return "\"" + htmlencode_forParams(s) + "\"";
  }

  static public Object[] mapToObjectArray(Map map) {
    List l = new ArrayList();
    for (Object o : keys(map)) {
      l.add(o);
      l.add(map.get(o));
    }
    return toObjectArray(l);
  }

  static public Object[] mapToObjectArray(Object f, Collection l) {
    int n = l(l);
    Object[] array = new Object[n];
    if (n != 0) {
      Iterator it = iterator(l);
      for (int i = 0; i < n; i++) array[i] = callF(f, it.next());
    }
    return array;
  }

  static public Object[] mapToObjectArray(Object f, Object[] l) {
    int n = l(l);
    Object[] array = new Object[n];
    for (int i = 0; i < n; i++) array[i] = callF(f, l[i]);
    return array;
  }

  static public <A> Object[] mapToObjectArray(Collection<A> l, IF1<A, Object> f) {
    return mapToObjectArray(f, l);
  }

  static public <A> Object[] mapToObjectArray(A[] l, IF1<A, Object> f) {
    return mapToObjectArray(f, l);
  }

  static public <A> Object[] mapToObjectArray(IF1<A, Object> f, A[] l) {
    int n = l(l);
    Object[] array = new Object[n];
    for (int i = 0; i < n; i++) array[i] = f.get(l[i]);
    return array;
  }

  static public ThreadLocal<Boolean> htmlencode_forParams_useV2 = new ThreadLocal();

  static public String htmlencode_forParams(String s) {
    if (s == null)
      return "";
    if (isTrue(htmlencode_forParams_useV2.get()))
      return htmlencode_forParams_v2(s);
    StringBuilder out = new StringBuilder(Math.max(16, s.length()));
    for (int i = 0; i < s.length(); i++) {
      char c = s.charAt(i);
      if (c > 127 || c == '"' || c == '<' || c == '>') {
        out.append("&#");
        out.append((int) c);
        out.append(';');
      } else
        out.append(c);
    }
    return out.toString();
  }

  static public String htmlencode_forParams_v2(String s) {
    if (s == null)
      return "";
    StringBuilder out = new StringBuilder(Math.max(16, s.length()));
    for (int i = 0; i < s.length(); i++) {
      char c = s.charAt(i);
      if (c > 127 || c == '"' || c == '<' || c == '>' || c == '&') {
        out.append("&#");
        out.append((int) c);
        out.append(';');
      } else
        out.append(c);
    }
    return out.toString();
  }
}