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bug#17173: 24.4.50; Emacs partially loses display, and redisplay via `C-


From: Eli Zaretskii
Subject: bug#17173: 24.4.50; Emacs partially loses display, and redisplay via `C-l' does not fix it
Date: Wed, 02 Apr 2014 19:59:27 +0300

> Date: Wed, 2 Apr 2014 08:14:16 -0700 (PDT)
> From: Drew Adams <address@hidden>
> 
> If I create a new frame (e.g. C-x 5 f) that partially obscures an
> existing frame, for instance, and the select that partially obscured
> frame (e.g., by clicking its title bar), so that it is raised again, the
> part of the buffer that was obscured looks wiped out (blank).  And
> repeated C-l does not fix this.

What about "M-x redraw-display RET" -- does it redisplay the frame in
its entirety?

> This does not happen systematically - just sometimes.

Can you try to figure out what distinguishes the cases when it happens
from those when it doesn't?  Maybe some mouse gesture before the click
on the obscured frame?  Or maybe it depends on which optional display
features (like display-time) you have enabled at the time?

Any idea when this started?





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