public static interface TextBuffer.DeleteRange

Signal emitted when one or more characters are deleted.

You can get a String representing the the removed characters by calling:

 deleted = buffer.getText(start, finish, false);
 

Note that in the case of a user action which attempts to delete text in a TextView that is not editable or within a range of characters affected by TextTags with the editable property set to false then the action will be inhibited and this signal will not be raised.