after-delete (augmentable only) in text%

Called after a given range is deleted from the editor (and after the display is refreshed; use on-delete and begin-edit-sequence to avoid extra refreshes when after-delete modifies the editor).

See also can-delete? and on-edit-sequence.

No internals locks are set when this method is called.

• (send a-text after-delete start len) -> void
     start : exact non-negative integer
     len : exact non-negative integer

  The start argument specifies the starting position of the deleted range. The len argument specifies number of deleted items (so start + len is the ending position of the deleted range).