get-focus-snip in editor<%>
Returns the snip within the editor that gets the keyboard focus when
the editor has the focus, or #f if the editor does not
delegate the focus.
The returned snip might be an editor-snip% object. In that
case, the embedded editor might delegate the focus to one of its own
snips. However, the
get-focus-snip method returns only the editor-snip% object, because it is
the focus-owning snip within the immediate editor.
See also
set-caret-owner .
( -> send an-editor get-focus-snip)snip% object or #f