public void setKeepTrailingSpacesOnCaretLine(boolean keep) {
    boolean old = myOptions.KEEP_TRAILING_SPACE_ON_CARET_LINE;
    if (old == keep) return;
    myOptions.KEEP_TRAILING_SPACE_ON_CARET_LINE = keep;
    myPropertyChangeSupport.firePropertyChange(PropNames.PROP_KEEP_TRAILING_SPACE_ON_CARET_LINE, old, keep);
  }
public void setKeepTrailingSpacesOnCaretLine(boolean keep)