[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#14604: 24.3.50.1; Possibly incorrect behaviour of frame-selected-win
From: |
Stefan Monnier |
Subject: |
bug#14604: 24.3.50.1; Possibly incorrect behaviour of frame-selected-window |
Date: |
Thu, 13 Jun 2013 10:35:18 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) |
> This works on 24.3, but on trunk all windows will be shown as "selected".
> (setq-default
> mode-line-format
> '(:eval (if (eq (frame-selected-window)
> (selected-window))
> "selected"
> "not-selected")))
Indeed this doesn't work any more. This was one of the very few places
where (eq (frame-selected-window) (selected-window)) was nil, and this
"invariant" is presumed at various places in the C code, so it was
a bug.
BTW, this worked in Emacs<24.3 if you wanted to highlight every frame's
selected-window, but not if you wanted to highlight "the one and only
selected-window". For single-frame settings, there's no difference,
of course.
There is no alternative, yet. We should probably provide some ad-hoc
primitives (call them maybe display-selected-window and
display-frame-selected-window) which return something like "the window
that was selected when we entered redisplay".
Stefan