static LS wordTok2_uncached(String s) {
  new ArrayList<S> tok;
  int l = s == null ? 0 : s.length();
  
  int i = 0, n = 0;
  while (i < l) {
    int j = i;
    
    // scan for whitespace
    while (j < l) {
      char c = s.charAt(j);
      break if Character.isJavaIdentifierPart(c);
      ++j;
      if (j >= l) break;
    }
    
    tok.add(javaTok_substringN(s, i, j));
    ++n;
    i = j;
    if (i >= l) break;
    char c = s.charAt(i);
    char d = i+1 >= l ? '\0' : s.charAt(i+1);

    // scan for non-whitespace
    
    if (Character.isJavaIdentifierStart(c)) {
      do ++j; while (j < l && (Character.isJavaIdentifierPart(s.charAt(j)) || s.charAt(j) == '\'')); // for stuff like "don't"
    } else if (Character.isDigit(c)) {
      do ++j; while (j < l && Character.isDigit(s.charAt(j)));
      if (j < l && s.charAt(j) == 'L') ++j; // Long constants like 1L
    } else
      ++j;
      
    tok.add(javaTok_substringC(s, i, j));
    ++n;
    i = j;
  }
  
  if ((tok.size() % 2) == 0) tok.add("");
  ret tok;
}

Began life as a copy of #1023688