GNU bug report logs - #38563
27.0.50; Company popup renders with newlines (?) inheriting the bg properties of the character at next line's bol

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Dmitry Gutov <dgutov <at> yandex.ru>
Subject: bug#38563: closed (Re: bug#38563: 27.0.50; Company popup renders
 with newlines (?) inheriting the bg properties of the character at next
 line's bol)
Date: Fri, 13 Dec 2019 12:01:02 +0000

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

Your bug report

#38563: 27.0.50; Company popup renders with newlines (?) inheriting the bg properties of the character at next line's bol

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 38563 <at> debbugs.gnu.org.

-- 
38563: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=38563
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Dmitry Gutov <dgutov <at> yandex.ru>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 38563-done <at> debbugs.gnu.org
Subject: Re: bug#38563: 27.0.50; Company popup renders with newlines (?)
 inheriting the bg properties of the character at next line's bol
Date: Fri, 13 Dec 2019 14:00:26 +0200

On 13.12.2019 12:31, Eli Zaretskii wrote:

> I think I found a better solution, which should "just work" for you.
> Please try the latest master.

It does! Thank you Eli.

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From: Dmitry Gutov <dgutov <at> yandex.ru>
To: bug-gnu-emacs <at> gnu.org
Subject: 27.0.50; Company popup renders with newlines (?) inheriting the bg
 properties of the character at next line's bol
Date: Wed, 11 Dec 2019 03:13:59 +0200

[Message part 4 (text/plain, inline)]

Here's an unfortunate new behavior which I didn't have time to report
or properly describe before.

When the next line starts on a character that has a distinct background,
that background is inherited when displaying newlines inside the display
string that renders the popup.

Here are two ways I usually trigger it:

1. Initiate completion on the "Author:" line of a LogEdit buffer (the
next line is an inverse-video line).

2. Have at least one space at the beginning of a line, and have
whitespace-mode on to highlight it in red. Then initiate completion on
the preceding line.

Screenshots are attached.

Needless to say, the latest Emacs 26 doesn't exhibit this problem.

[Screenshot from 2019-12-11 03-00-35.png (image/png, attachment)]

[Screenshot from 2019-12-11 03-00-41.png (image/png, attachment)]

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