GNU bug report logs - #16347
24.3.50; Company pseudo-tooltip refresh problem when expanded down at eob

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#16347: closed (24.3.50; Company pseudo-tooltip refresh
 problem when expanded down at eob)
Date: Sat, 11 Jan 2014 11:56:02 +0000

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Your message dated Sat, 11 Jan 2014 13:55:31 +0200
with message-id <83y52mag24.fsf <at> gnu.org>
and subject line Re: bug#16347: 24.3.50; Company pseudo-tooltip refresh problem when expanded down at eob
has caused the debbugs.gnu.org bug report #16347,
regarding 24.3.50; Company pseudo-tooltip refresh problem when expanded down at eob
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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16347: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=16347
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From: Dmitry Gutov <dgutov <at> yandex.ru>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3.50;
 Company pseudo-tooltip refresh problem when expanded down at eob
Date: Sun, 05 Jan 2014 08:21:05 +0400

`company-select-next' (`M-n') and `company-select-previous' (`M-p')
don't update the default candidates' dropdown appearance, specifically
the "current" line selection doesn't move.

It's easiest to spot in a new IELM session.

1. M-x ielm.
2. Make sure that there's no text after point, and there are enough
screen lines below it so that the pseudo-tooltip will be rendered below
the current line.
3. M-x company-complete.
4. Press `M-n' and/or `M-p' several times. Note that the "current"
candidate doesn't change, but different summary lines get shown in the
echo area.

In some other buffers, the "current" lines can move 1-2 times, but then
it likewise stops getting updated.

It's a relatively recent problem. I haven't had time to bisect it yet,
but Emacs 24.3 definitely doesn't have this bug.


In GNU Emacs 24.3.50.4 (x86_64-unknown-linux-gnu, GTK+ Version 3.8.6)
 of 2014-01-04 on axl
Bzr revision: 115859 vincentb1 <at> users.sourceforge.net-20140103141824-juu968y9pi6r2zvv
Windowing system distributor `The X.Org Foundation', version 11.0.11403000
System Description:	Ubuntu 13.10

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From: Eli Zaretskii <eliz <at> gnu.org>
To: dgutov <at> yandex.ru
Cc: 16347-done <at> debbugs.gnu.org
Subject: Re: bug#16347: 24.3.50;
 Company pseudo-tooltip refresh problem when expanded down at eob
Date: Sat, 11 Jan 2014 13:55:31 +0200

> Date: Thu, 09 Jan 2014 18:44:28 +0200
> From: Eli Zaretskii <eliz <at> gnu.org>
> Cc: 16347 <at> debbugs.gnu.org
> 
> > Date: Thu, 09 Jan 2014 17:23:02 +0400
> > From: Dmitry Gutov <dgutov <at> yandex.ru>
> > CC: monnier <at> IRO.UMontreal.CA, 16347 <at> debbugs.gnu.org
> > 
> > Sorry, you both. Here's the missing piece:
> > 
> > (setq bidi-display-reordering nil)
> 
> OK, now I see the problem.
> 
> > This is pretty low-level var, so maybe it's not even supposed to be set 
> > by a user.
> 
> Indeed, it isn't.  But in this case, all it does is enable a redisplay
> optimization that is disabled when bidi-display-reordering is non-nil.
> So there's a bug either in that redisplay optimization or in the
> conditions that enable it (probably the latter).
> 
> I will take a look.

Fixed in trunk revision 115974.

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