GNU bug report logs - #40124
Bad interaction between before-string and :box faces

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Clément Pit-Claudel <cpitclaudel <at> gmail.com>
To: bug-gnu-emacs <bug-gnu-emacs <at> gnu.org>
Subject: Bad interaction between before-string and :box faces
Date: Wed, 18 Mar 2020 15:26:38 -0400

Hi all,

In the following sample, the word "test" should have its letters "e" and "s" in a box; but instead they display with just a bar above and below.  Removing the before-string property fixes the issue.

(with-current-buffer (get-buffer-create "box-test")
  (erase-buffer)
  (insert "test")
  (let ((ov (make-overlay 2 4)))
    (overlay-put ov 'face '(:box t))
    (overlay-put ov 'before-string
                 (propertize ">" 'display
                             '(left-fringe right-arrow))))
  (pop-to-buffer (current-buffer)))

This was reported by Artemios (cc'd) in https://github.com/flycheck/flycheck/issues/1666.

Clément.

In GNU Emacs 28.0.50 (build 5, x86_64-pc-linux-gnu, GTK+ Version 3.22.30, cairo version 1.15.10)
 of 2020-03-15 built on clem-w50-mint
Repository revision: 9dccaf8a5cdb10dae597345ec3741475477a7d97
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.11906000
System Description: Linux Mint 19.3

Recent messages:
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Configured features:
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INOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE HARFBUZZ M17N_FLT LIBOTF
ZLIB TOOLKIT_SCROLL_BARS GTK3 X11 XDBE XIM MODULES THREADS LIBSYSTEMD
JSON PDUMPER LCMS2 GMP

Important settings:
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  value of $LC_NUMERIC: en_DK.UTF-8
  value of $LC_TIME: en_DK.UTF-8
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  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
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Load-path shadows:
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Features:
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Message #8 received at 40124 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Clément Pit-Claudel <cpitclaudel <at> gmail.com>
Cc: demisbalbach <at> googlemail.com, 40124 <at> debbugs.gnu.org
Subject: Re: bug#40124: Bad interaction between before-string and :box faces
Date: Thu, 19 Mar 2020 17:00:03 +0200

> From: Clément Pit-Claudel <cpitclaudel <at> gmail.com>
> Date: Wed, 18 Mar 2020 15:26:38 -0400
> Cc: demisbalbach <at> googlemail.com
> 
> In the following sample, the word "test" should have its letters "e" and "s" in a box; but instead they display with just a bar above and below.  Removing the before-string property fixes the issue.
> 
> (with-current-buffer (get-buffer-create "box-test")
>   (erase-buffer)
>   (insert "test")
>   (let ((ov (make-overlay 2 4)))
>     (overlay-put ov 'face '(:box t))
>     (overlay-put ov 'before-string
>                  (propertize ">" 'display
>                              '(left-fringe right-arrow))))
>   (pop-to-buffer (current-buffer)))
> 
> This was reported by Artemios (cc'd) in https://github.com/flycheck/flycheck/issues/1666.

Thanks, I think I fixed this now on the master branch.

Message #13 received at 40124-done <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefan <at> marxist.se>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: demisbalbach <at> googlemail.com,
 Clément Pit-Claudel <cpitclaudel <at> gmail.com>,
 40124-done <at> debbugs.gnu.org
Subject: Re: bug#40124: Bad interaction between before-string and :box faces
Date: Tue, 25 Aug 2020 15:35:26 -0700

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

>> From: Clément Pit-Claudel <cpitclaudel <at> gmail.com>
>> Date: Wed, 18 Mar 2020 15:26:38 -0400
>> Cc: demisbalbach <at> googlemail.com
>>
>> In the following sample, the word "test" should have its letters "e" and "s" in a box; but instead they display with just a bar above and below.  Removing the before-string property fixes the issue.
>>
>> (with-current-buffer (get-buffer-create "box-test")
>>   (erase-buffer)
>>   (insert "test")
>>   (let ((ov (make-overlay 2 4)))
>>     (overlay-put ov 'face '(:box t))
>>     (overlay-put ov 'before-string
>>                  (propertize ">" 'display
>>                              '(left-fringe right-arrow))))
>>   (pop-to-buffer (current-buffer)))
>>
>> This was reported by Artemios (cc'd) in https://github.com/flycheck/flycheck/issues/1666.
>
> Thanks, I think I fixed this now on the master branch.

There has been no followup within 22 weeks, so I'm going to assume the
fix worked and close this bug now.

If this conclusion is incorrect, please reply to this email (use "Reply
to all" in your email client) and we can reopen the bug report.

Best regards,
Stefan Kangas

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