on-delete

Called before a range is deleted from the buffer. If the return value is #f, then the delete will be aborted. Otherwise, after-delete is guaranteed to be called after the delete has completed.

The buffer is internally locked for writing during a call to this method (see also Locks). Use after-delete to modify the buffer, if necessary.

See also on-edit-sequence.

• (send a-mred:media-text-edit on-delete s l) -> void
      s : int
      l : int

  Calls the superclass's on-delete and then calls the callback for the text box control.