GNU bug report logs - #19721
25.0.50; Mode-line not redrawn with expose events

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From: YAMAMOTO Mitsuharu <mituharu <at> math.s.chiba-u.ac.jp>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 19721 <at> debbugs.gnu.org
Subject: bug#19721: 25.0.50; Mode-line not redrawn with expose events
Date: Sat, 31 Jan 2015 20:37:09 +0900

[Message part 1 (text/plain, inline)]

>>>>> On Sat, 31 Jan 2015 12:53:37 +0200, Eli Zaretskii <eliz <at> gnu.org> said:

> Does the patch below fix the problem?

> I cannot reproduce your recipe on the systems to which I have access,
> so I used a slightly modified procedure and the dump-glyph-matrix
> function to show what I think is the same issue: namely, in a frame
> with 3 vertically-arranged windows, the window "after the selected
> one" (in the next-window sense) has its mode-line row disabled in the
> current glyph matrix.  That problem is solved by the patch below, but
> I'm not sure it solves yours.

With this patch, the mode-lines are redrawn when they are exposed.
But I also observe that a mode-line part is not updated with the last
C-x o (see the 3rd mode-line in the screenshot) with the previously
mentioned procedure on the Mac port.  Strangely, if I try C-x o three
times further, then the second mode-line part is also not updated.
Unfortunately, I couldn't reproduce it with Cent OS 5.11.

				     YAMAMOTO Mitsuharu
				mituharu <at> math.s.chiba-u.ac.jp

[mode-line-not-update.png (image/png, inline)]

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