srecord noeq LeftArrowScriptAutoCompleter(GazelleV_LeftArrowScriptParser parser) {
  LS tok;
  CharInToken cursor;
  S typedCharacters;

  void seek(S text, int iChar) {
    parser.setText(text);
    parser.init();
    tok = parser.tok;
    cursor = charIndexToCharInToken(tok, iChar-1);
    typedCharacters = takeFirst(cursor.token(), cursor.iChar+1);
  }
  
  S prevToken() { ret get(tok, cursor.iTok-2); }
  
  bool beginningOfCmd() {
    ret eqOneOf(prevToken(), ";", "{", "}")
      || containsNewLine(get(tok, cursor.iTok-1));
  }

  Cl<S> getCompletions() { ret searcher()!; }
  
  ScoredStringSearcher searcher() {
    ScoredStringSearcher searcher = new(typedCharacters);
    S prev = prevToken();
    
    if (!beginningOfCmd() && isIdentifier(prev))
      searcher.addAll("true", "false", "null");
    else
      searcher.addAll(globalMethodNames());
    ret searcher;
  }

  swappable Cl<S> globalMethodNames() {
    ret concatMap methodNames(parser.functionContainers);
  }
}