on-delete (augmentable only) in pasteboard%

Called before a snip is deleted from the editor, after can-delete? is called to verify that the deletion is allowed. The after-delete method is guaranteed to be called after the delete has completed.

The editor is internally locked for writing when this method is called (see also Locks). Use after-delete to modify the editor, if necessary.

• (send a-pasteboard on-delete snip) -> void
     snip : snip% object