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 .