GitLab

some suspicious corner cases (see Bug#13007 and Bug#13012).
(mode_line_update_needed): New function.
(redisplay_internal, redisplay_window): Use it.
(ensure_selected_frame): New function.
(redisplay_internal, unwind_redisplay): Use it.
(redisplay_internal): Move comment about buffer_shared...
(buffer_shared_and_changed): ...near to its real use.