From: Gabriel <gabriel376@hotmail.com>
To: 59527@debbugs.gnu.org
Subject: bug#59527: 29.0.50; Face issues in show-paren context overlay
Date: Wed, 23 Nov 2022 21:22:02 -0300 [thread overview]
Message-ID: <SJ0PR06MB86096892237D8E21745E1D848B0F9@SJ0PR06MB8609.namprd06.prod.outlook.com> (raw)
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Description:
The context overlay (from show-paren) has some face issues. First, in
case font-lock was not applied to a previous region of the buffer, the
overlay will not display the context with font-lock. Second, the
overlay will be displayed with the same background as the top-left line
of the window instead of the original context background.
Steps:
1) emacs -Q (master "b42cd524b46a4f29ef13e9d03be9d3df917f9aa3")
2) eval:
(progn
;; enable overlay context in show-paren
(setopt show-paren-context-when-offscreen 'overlay)
;; just to have a different background to reproduce issue #2
(add-hook 'c-mode-hook #'whitespace-mode))
3) Open file src/xdisp.c from emacs source tree: C-x C-f emacs/src/xdisp.c
4) Go to line 13418: M-g M-g 13418
5) Go to next char (the context overlay will be displayed): C-f
Problem 1: the overlay context does not have font-lock, since font-lock
was not applied to the previous area that contains the context. As a
workaround, execute C-M b (to navigate to context and force font-lock
update) and then C-M-f to navigate back and display again the overlay
context (with correct font-lock, this time). I expect the context
overlay to always be displayed with an updated font-lock.
Problem 2: the overlay context will be displayed with the same
background color as the top-left line of the window (yellow, in this
case, because of whitespace-mode). I expect the context overlay to
always show the correct background, regardless of the face in the
top-left line.
See attached images for more information.
[-- Attachment #2: wrong font-lock.png --]
[-- Type: image/png, Size: 102835 bytes --]
[-- Attachment #3: correct font-lock.png --]
[-- Type: image/png, Size: 103577 bytes --]
[-- Attachment #4: whitespace-mode + wrong font-lock.png --]
[-- Type: image/png, Size: 116445 bytes --]
[-- Attachment #5: whitespace-mode + correct font-lock.png --]
[-- Type: image/png, Size: 118041 bytes --]
[-- Attachment #6: Type: text/plain, Size: 13 bytes --]
---
Gabriel
next reply other threads:[~2022-11-24 0:22 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-24 0:22 Gabriel [this message]
2022-11-24 7:10 ` bug#59527: 29.0.50; Face issues in show-paren context overlay Eli Zaretskii
2022-11-24 7:18 ` Tassilo Horn
2022-11-24 9:55 ` Tassilo Horn
2022-11-24 11:21 ` Gabriel
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