GNU bug report logs - #31966
27.0.50; auto-complete candidates aren't aligned properly

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Stefan Kangas <stefan <at> marxist.se>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#31966: closed (27.0.50; auto-complete candidates aren't
 aligned properly)
Date: Wed, 21 Aug 2019 02:18:01 +0000

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

Your message dated Wed, 21 Aug 2019 04:17:05 +0200
with message-id <CADwFkmki0q=-Gce+nFOUwhSnYbgxAm2XAnQbNrhkp=1kturWFQ <at> mail.gmail.com>
and subject line Re: bug#31966: 27.0.50; auto-complete candidates aren't aligned properly
has caused the debbugs.gnu.org bug report #31966,
regarding 27.0.50; auto-complete candidates aren't aligned properly
to be marked as done.

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


-- 
31966: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=31966
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: John Shahid <jvshahid <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 27.0.50; auto-complete candidates aren't aligned properly
Date: Mon, 25 Jun 2018 17:08:50 +0000

The candidates in the auto-complete popup aren't aligned properly. The
left margin appears to be shifted to the right relative to the
point. This seems to be caused by `vertical-motion' behavior changing on
master.

when display-line-numbers is turned on I expect the following to move
the point to the following line while keeping the point's column fixed
(assuming of course that the following line is long enough):

  (vertical-motion (cons (car (posn-col-row (posn-at-point))) 1))

This isn't the case anymore with current master. Point will move to the
right by the number of characters used to display the line numbers.


In GNU Emacs 27.0.50 (build 1, x86_64-pc-linux-gnu)
 of 2018-06-25 built on 452af4531e9a
Repository revision: 9f6bb1c2d9cac8ccea129242d6977bc848b3f715
System Description: Ubuntu 16.04.4 LTS

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[Message part 3 (message/rfc822, inline)]

From: Stefan Kangas <stefan <at> marxist.se>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: John Shahid <jvshahid <at> gmail.com>, 31966-done <at> debbugs.gnu.org
Subject: Re: bug#31966: 27.0.50;
 auto-complete candidates aren't aligned properly
Date: Wed, 21 Aug 2019 04:17:05 +0200

Eli Zaretskii <eliz <at> gnu.org> writes:

> tags 31966 notabug
> thanks
>
>> From: John Shahid <jvshahid <at> gmail.com>
>> Date: Mon, 25 Jun 2018 17:08:50 +0000
>>
>> The candidates in the auto-complete popup aren't aligned properly. The
>> left margin appears to be shifted to the right relative to the
>> point. This seems to be caused by `vertical-motion' behavior changing on
>> master.
>>
>> when display-line-numbers is turned on I expect the following to move
>> the point to the following line while keeping the point's column fixed
>> (assuming of course that the following line is long enough):
>>
>>   (vertical-motion (cons (car (posn-col-row (posn-at-point))) 1))
>>
>> This isn't the case anymore with current master. Point will move to the
>> right by the number of characters used to display the line numbers.
>
> (The emacs-26 branch behaves like master now, btw.)
>
> This is not a bug.  posn-at-point doesn't measure columns, it measures
> the X coordinate relative to the window edge, and just expresses it in
> columns, so the result includes the width taken by the line-number
> display.  If you need to get at the column number relative to the
> leftmost text character, use current-column.  And if you want the
> result in canonical columns, i.e. in units of width of the frame's
> default face's font (as opposed to the font used by buffer text near
> point), then subtract from what posn-at-point returns the value
> returned by the following function call:
>
>   (line-number-display-width 'columns)
>
> The code you show used to work because there was a bug which masked
> this issue, and that bug is now fixed on both master and the emacs-26
> branch.

This was tagged notabug over a year ago, and indeed doesn't seem to be
a bug.  I'm therefore now closing this bug report.

Thanks,
Stefan Kangas

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