GNU bug report logs - #76967
30.1; Specific UTF-8 characters causes misalignments on PGTK

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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#76967: closed (30.1; Specific UTF-8 characters causes
 misalignments on PGTK)
Date: Sat, 29 Mar 2025 11:19:01 +0000

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

Your message dated Sat, 29 Mar 2025 14:18:20 +0300
with message-id <861pug84qr.fsf <at> gnu.org>
and subject line Re: bug#76967: 30.1; Specific UTF-8 characters causes misalignments on PGTK
has caused the debbugs.gnu.org bug report #76967,
regarding 30.1; Specific UTF-8 characters causes misalignments on PGTK
to be marked as done.

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


-- 
76967: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=76967
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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

From: artur <amad <at> atl.tools>
To: bug-gnu-emacs <at> gnu.org
Subject: 30.1; Specific UTF-8 characters causes misalignments on PGTK
Date: Tue, 11 Mar 2025 20:07:11 +0000

To reproduce this bug, you must:
1. Open a terminal (such as emacs-eat, vterm, the usual emacs terminal)
2. Open btop (I used `nix run "nixpkgs#btop"` but you could use `pacman
-S btop | yes && btop` on Arch Linux)

The effects caused are severe distortion to where the program isn't
really usable. You may see extreme graphical issues such as:
- More violent refreshes
- Characters not lining up either barely or Finnishly gapped

A recipe will not be provided, as the terminals provided by Emacs cannot
render btop period.


In GNU Emacs 30.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.48,
cairo version 1.18.2)
System Description: NixOS 25.05 (Warbler)

Configured using:
'configure
--prefix=/nix/store/q9plzwv5nr7b0napm8wqw7n8diqkzbk9-emacs-pgtk-30.1
--disable-build-details --with-modules --with-pgtk
--with-compress-install --with-toolkit-scroll-bars
--with-native-compilation --without-imagemagick --with-mailutils
--without-small-ja-dic --with-tree-sitter --without-xinput2
--without-xwidgets --with-dbus --with-selinux'

Configured features:
CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
LIBSELINUX LIBSYSTEMD LIBXML2 MODULES NATIVE_COMP NOTIFY INOTIFY PDUMPER
PGTK PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS
TREE_SITTER WEBP XIM GTK3 ZLIB

Important settings:
 value of $EMACSLOADPATH:
 value of $EMACSNATIVELOADPATH:
 value of $LANG: de_DE.UTF-8
 locale-coding-system: utf-8-unix

Major mode: Fundamental

Minor modes in effect:
 mood-line-mode: t
 helm-mode: t
 helm-minibuffer-history-mode: t
 savehist-mode: t
 which-key-mode: t
 envrc-global-mode: t
 spacious-padding-mode: t
 override-global-mode: t
 tooltip-mode: t
 global-eldoc-mode: t
 show-paren-mode: t
 electric-indent-mode: t
 mouse-wheel-mode: t
 file-name-shadow-mode: t
 global-font-lock-mode: t
 blink-cursor-mode: t
 minibuffer-regexp-mode: t
 buffer-read-only: t
 line-number-mode: t
 indent-tabs-mode: t
 transient-mark-mode: t
 auto-composition-mode: t
 auto-encryption-mode: t
 auto-compression-mode: t

Load-path shadows:
/nix/store/36pj459qgxdr31ck8p34knf62krvp5rn-emacs-packages-deps/share/emacs/site-lisp/site-start 
hides 
/nix/store/q9plzwv5nr7b0napm8wqw7n8diqkzbk9-emacs-pgtk-30.1/share/emacs/site-lisp/site-start
/nix/store/36pj459qgxdr31ck8p34knf62krvp5rn-emacs-packages-deps/share/emacs/site-lisp/elpa/transient-20250306.1916/transient 
hides 
/nix/store/q9plzwv5nr7b0napm8wqw7n8diqkzbk9-emacs-pgtk-30.1/share/emacs/30.1/lisp/transient
/nix/store/36pj459qgxdr31ck8p34knf62krvp5rn-emacs-packages-deps/share/emacs/site-lisp/elpa/seq-2.24/seq 
hides 
/nix/store/q9plzwv5nr7b0napm8wqw7n8diqkzbk9-emacs-pgtk-30.1/share/emacs/30.1/lisp/emacs-lisp/seq
/nix/store/36pj459qgxdr31ck8p34knf62krvp5rn-emacs-packages-deps/share/emacs/site-lisp/elpa/compat-30.0.2.0/compat 
hides 
/nix/store/q9plzwv5nr7b0napm8wqw7n8diqkzbk9-emacs-pgtk-30.1/share/emacs/30.1/lisp/emacs-lisp/compat

Features:
(shadow sort mail-extr emacsbug message yank-media puny rfc822 mml
mml-sec epa derived epg rfc6068 epg-config gnus-util mm-decode mm-bodies
mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail
rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils comp comp-cstr
cl-extra winner cursor-sensor tramp-archive tramp-gvfs dbus xml
helm-command helm-elisp helm-eval edebug helm-info comp-run comp-common
display-line-numbers eglot external-completion jsonrpc xref flymake
thingatpt seq-25 diff ert pp ewoc debug backtrace find-func warnings
compile text-property-search imenu mood-line helm-mode helm-misc
helm-files image-dired image-dired-tags image-dired-external
image-dired-util image-mode dired dired-loaddefs exif filenotify tramp
trampver tramp-integration files-x tramp-message help-mode tramp-compat
xdg shell pcomplete parse-time iso8601 time-date tramp-loaddefs
helm-buffers helm-x-icons helm-occur helm-tags helm-locate helm-grep
helm-regexp format-spec helm-utils helm-help helm-types helm
helm-global-bindings helm-easymenu edmacro kmacro helm-core helm-source
helm-multi-match helm-lib async savehist which-key envrc inheritenv
diff-mode track-changes config spacious-padding cc-mode cc-fonts
cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs
python rx project compat pcase treesit comint ansi-osc ring ansi-color
base16-everforest-dark-hard-theme base16-theme bind-key easy-mmode
base16-theme-autoloads envrc-autoloads haskell-mode-autoloads
helm-autoloads helm-core-autoloads async-autoloads inheritenv-autoloads
mood-line-autoloads nix-mode-autoloads magit-section-autoloads
llama-autoloads qml-mode-autoloads rust-mode-autoloads
spacious-padding-autoloads info transient-autoloads vterm-autoloads
wfnames-autoloads package browse-url url url-proxy url-privacy
url-expand url-methods url-history url-cookie generate-lisp-file
url-domsuf url-util mailcap url-handlers url-parse auth-source cl-seq
eieio eieio-core cl-macs icons password-cache json subr-x map byte-opt
gv bytecomp byte-compile url-vars cl-loaddefs cl-lib rmc iso-transl
tooltip cconv eldoc paren electric uniquify ediff-hook vc-hooks
lisp-float-type elisp-mode mwheel term/pgtk-win pgtk-win term/common-win
touch-screen pgtk-dnd tool-bar dnd fontset image regexp-opt fringe
tabulated-list replace newcomment text-mode lisp-mode prog-mode register
page tab-bar menu-bar rfn-eshadow isearch easymenu timer select
scroll-bar mouse jit-lock font-lock syntax font-core term/tty-colors
frame minibuffer nadvice seq simple cl-generic indonesian philippine
cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech
european ethiopic indian cyrillic chinese composite emoji-zwj charscript
charprop case-table epa-hook jka-cmpr-hook help abbrev obarray oclosure
cl-preloaded button loaddefs theme-loaddefs faces cus-face macroexp
files window text-properties overlay sha1 md5 base64 format env
code-pages mule custom widget keymap hashtable-print-readable backquote
threads dbusbind inotify dynamic-setting system-font-setting
font-render-setting cairo gtk pgtk multi-tty move-toolbar
make-network-process native-compile emacs)

Memory information:
((conses 16 321284 30614) (symbols 48 22076 0) (strings 32 70691 3306)
(string-bytes 1 2695713) (vectors 16 38770)
(vector-slots 8 464270 12189) (floats 8 153 1264)
(intervals 56 1019 110) (buffers 992 16))


------------
Artur Manuel
amadaluzia

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

From: Eli Zaretskii <eliz <at> gnu.org>
To: Artur Manuel <amad <at> atl.tools>
Cc: 76967-done <at> debbugs.gnu.org, manuel <at> ledu-giraud.fr
Subject: Re: bug#76967: 30.1; Specific UTF-8 characters causes misalignments
 on PGTK
Date: Sat, 29 Mar 2025 14:18:20 +0300

> Date: Sat, 15 Mar 2025 11:21:03 +0000
> From: Artur Manuel <amad <at> atl.tools>
> Cc: 76967 <at> debbugs.gnu.org, manuel <at> ledu-giraud.fr
> 
>  > Can you use some font-viewing utility to check if the default
>  > face's font has glyphs for the problematic characters, when Emacs 
> uses
>  > a different font for them?
> Did that just now on the problematic characters. I can finally conclude
> that this is a font-wise issue. I believe the solution is to just force
> fixed-pitch on fonts (like what foot is doing) instead of allowing fonts
> of varying width to do as they please.
> 
> However, I feel like if forced fixed-width were to be implemented in the
> future, it would need to be done as a special mode which toggles it.
> Since EWW (I think at least) and some Org-mode users would prefer to use
> variable-pitch.

No further comments within 2 weeks, so I'm closing this bug.

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