Program: 109004
Project: 109004
Buggy source:
private void highlight(){
  if (highlighter == null) {
    highlighter=new QueryTokenizer(new QueryTokenizerListener(){
      @Override public void geq(      int start,      int length){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=length;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_BLUE;
        styles.add(style);
      }
      @Override public void value(      int start,      int length){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=length;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_DARK_GRAY;
        styles.add(style);
      }
      @Override public void field(      int start,      int length){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=length;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_RED;
        styles.add(style);
      }
      @Override public void begin(      int start){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=1;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_GREEN;
        styles.add(style);
      }
      @Override public void end(      int start){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=1;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_GREEN;
        styles.add(style);
      }
      @Override public void and(      int start,      int length){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=length;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_GRAY;
        styles.add(style);
      }
      @Override public void or(      int start,      int length){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=length;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_GRAY;
        styles.add(style);
      }
      @Override public void less(      int start){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=1;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_BLUE;
        styles.add(style);
      }
      @Override public void greater(      int start){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=1;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_BLUE;
        styles.add(style);
      }
      @Override public void leq(      int start,      int length){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=length;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_BLUE;
        styles.add(style);
      }
      @Override public void equals(      int start){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=1;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_BLUE;
        styles.add(style);
      }
    }
);
  }
  styles.clear();
  highlighter.tokenize(text.getText());
  text.setRedraw(false);
  text.setStyleRanges(styles.toArray(new StyleRange[styles.size()]));
  text.setRedraw(true);
}

Fixed version (ground truth):
private void highlight(){
  if (highlighter == null) {
    highlighter=new QueryTokenizer(new QueryTokenizerListener(){
      @Override public void geq(      int start,      int length){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=length;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_BLUE;
        styles.add(style);
      }
      @Override public void value(      int start,      int length){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=length;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_DARK_GRAY;
        styles.add(style);
      }
      @Override public void field(      int start,      int length){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=length;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_RED;
        styles.add(style);
      }
      @Override public void begin(      int start){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=1;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_GREEN;
        styles.add(style);
      }
      @Override public void end(      int start){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=1;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_GREEN;
        styles.add(style);
      }
      @Override public void and(      int start,      int length){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=length;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_GRAY;
        styles.add(style);
      }
      @Override public void or(      int start,      int length){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=length;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_GRAY;
        styles.add(style);
      }
      @Override public void less(      int start){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=1;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_BLUE;
        styles.add(style);
      }
      @Override public void greater(      int start){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=1;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_BLUE;
        styles.add(style);
      }
      @Override public void leq(      int start,      int length){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=length;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_BLUE;
        styles.add(style);
      }
      @Override public void equals(      int start){
        StyleRange style=new StyleRange();
        style.start=start;
        style.length=1;
        style.fontStyle=SWT.BOLD;
        style.foreground=GUIHelper.COLOR_BLUE;
        styles.add(style);
      }
      @Override public void invalid(      int start){
      }
    }
);
  }
  styles.clear();
  highlighter.tokenize(text.getText());
  text.setRedraw(false);
  text.setStyleRanges(styles.toArray(new StyleRange[styles.size()]));
  text.setRedraw(true);
}