@NotNull
  private VisualPosition prevSelectionVisualPosition(@NotNull VisualPosition pos) {
    int prevColumn = pos.column - 1;
    if (prevColumn >= 0) {
      return new VisualPosition(pos.line, prevColumn, true);
    }
    if (isColumnMode() || pos.line == 0) {
      return new VisualPosition(pos.line, 0, true);
    }
    int prevLine = pos.line - 1;
    return new VisualPosition(prevLine, EditorUtil.getLastVisualLineColumnNumber(this, prevLine), true);
  }
@NotNull
  private VisualPosition prevSelectionVisualPosition(@NotNull VisualPosition pos)