Deletes all editable text in the given range.
Calls gtk.text_buffer.TextBuffer.delete_ for each editable sub-range of
[start,end). start and end are revalidated to point to
the location of the last deleted range, or left untouched if
no text was deleted.
Deletes all editable text in the given range. Calls gtk.text_buffer.TextBuffer.delete_ for each editable sub-range of [start,end). start and end are revalidated to point to the location of the last deleted range, or left untouched if no text was deleted.