after-delete 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.
( -> void
send a-text after-delete start len)
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).