Never pass negative values to setSelection.

     *

     * @param start the character index where the selection should start.

     * @param end the character index where the selection should end.

     * @return Returns true on success, false if the input connection is no longer valid either when

     * setting the selection or when retrieving the text cache at that point.

     * @return Returns true on success, false on failure: either the input connection is no longer

     * valid when setting the selection or when retrieving the text cache at that point, or

     * invalid arguments were passed.

     */

    public boolean setSelection(final int start, final int end) {

        if (DEBUG_BATCH_NESTING) checkBatchEdit();

        if (DEBUG_PREVIOUS_TEXT) checkConsistencyForDebug();

        if (start < 0 || end < 0) {

            return false;

        }

        mExpectedSelStart = start;

        mExpectedSelEnd = end;

        if (null != mIC) {