GNU bug report logs - #12170
save-excursion fails boundary case with recenter

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Package: emacs;

Reported by: "Bill Brodie" <wbrodie <at> panix.com>

Date: Fri, 10 Aug 2012 02:01:02 UTC

Severity: normal

Tags: notabug

Done: npostavs <at> users.sourceforge.net

Bug is archived. No further changes may be made.

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From: Eli Zaretskii <eliz <at> gnu.org>
To: martin rudalics <rudalics <at> gmx.at>
Cc: 12170 <at> debbugs.gnu.org, wbrodie <at> panix.com
Subject: bug#12170: save-excursion fails boundary case with recenter
Date: Sat, 11 Aug 2012 19:31:53 +0300

> Date: Sat, 11 Aug 2012 18:05:14 +0200
> From: martin rudalics <rudalics <at> gmx.at>
> CC: wbrodie <at> panix.com, 12170 <at> debbugs.gnu.org
> 
> So the difference should be in one of the four assignments
> 
>    w->start_at_line_beg = 0;
>    w->update_mode_line = 1;
>    w->last_modified = 0;
>    w->last_overlay_modified = 0;
> 
> and I'd obviously vote for the first one.  Interesting side-effect.

FWIW, there are only 2 places in redisplay that look at
w->start_at_line_beg, but neither your nor Bill's recipe don't
exercise the code of either of these two places.
This bug report was last modified 8 years and 120 days ago.

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