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* bug#54646: 29.0.50; set-fontset-font and font clipping issues
@ 2022-03-31  3:37 Visuwesh
  2022-03-31  5:34 ` Eli Zaretskii
  0 siblings, 1 reply; 53+ messages in thread
From: Visuwesh @ 2022-03-31  3:37 UTC (permalink / raw)
  To: 54646

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I have the following line [1] in my init.el to make Emacs use "Kurinto
Seri" for the Tamil script,

    (set-fontset-font t 'tamil "Kurinto Seri")

and this leads to font "clipping" issues.  The text is shaped properly
in that it combines the diacritics but I see "clipping" problems
instead.  See screenshot below:


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I type C-x C-+, then the clipping problem goes away until I increase the
font size again a bit and the problem gets worse:


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I cannot seem to reproduce this from emacs -Q, nor do I see this issue
when I start Emacs up (I use the daemon if that makes a difference [2]).
It naturally shows up after using Emacs for a while, sometimes reopening
the frame fixes the clipping problems, sometimes I have to reevaluate
the set-fontset-font form to fix it.  And this issue isn't font-specific
as well: I had the same problem with "Noto Serif."  I would highly any
hints towards nailing the problem down; I'm really out of ideas.

If I didn't make it clear, there are no such problems if I don't modify
the default fontset.

[1] I also modify the default fontset for other scripts,

      (set-fontset-font t 'mathematical "Kurinto Mono" nil 'prepend)
      (set-fontset-font t 'mathematical "Latin Modern Math" nil 'append)
      (set-fontset-font t 'symbol "Latin Modern Math" nil 'append)
      (set-fontset-font t 'emoji "Kurinto Mono")
      (set-fontset-font t 'emoji "Kurinto Sans" nil 'append)
      (set-fontset-font t 'emoji "DejaVu Sans" nil 'append)

    and I set the language and the locale environment to Tamil and
    ta_IN.utf8 respectively, before modifying the fontset.

[2] Modifying the fontset in `server-after-make-frame-hook' does not
    make a difference.  I don't see the issue when I do not use the
    daemon but I believe I haven't run the non-daemon session long
    enough.

In GNU Emacs 29.0.50 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo version 1.16.0, Xaw scroll bars)
Repository revision: ca3858563c7ba8ee3caa82fbd2b7c386ea60c0d3
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12013000
System Description: NixOS 21.11 (Porcupine)

Configured using:
 'configure
 --prefix=/nix/store/iqqk7iqfwmfc6r78xg2knyq7hww2mhs4-emacs-git-20220225.0
 --disable-build-details --with-modules --with-x-toolkit=lucid
 --with-xft --with-cairo --with-native-compilation'

Configured features:
CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG JSON
LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES NATIVE_COMP NOTIFY
INOTIFY PDUMPER PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS X11 XDBE XIM XPM LUCID ZLIB

Important settings:
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  value of $LC_MONETARY: ta_IN.UTF-8
  value of $LC_NUMERIC: ta_IN.UTF-8
  value of $LANG: en_GB.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Group

Minor modes in effect:
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  indent-tabs-mode: t
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Load-path shadows:
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/home/viz/lib/emacs/straight/build/map/map hides /nix/store/iqqk7iqfwmfc6r78xg2knyq7hww2mhs4-emacs-git-20220225.0/share/emacs/29.0.50/lisp/emacs-lisp/map
/home/viz/lib/emacs/straight/build/let-alist/let-alist hides /nix/store/iqqk7iqfwmfc6r78xg2knyq7hww2mhs4-emacs-git-20220225.0/share/emacs/29.0.50/lisp/emacs-lisp/let-alist

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term/common-win x-dnd tool-bar dnd fontset image regexp-opt fringe
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hebrew greek romanian slovak czech european ethiopic indian cyrillic
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Memory information:
((conses 16 1396059 197130)
 (symbols 48 51447 4)
 (strings 32 326304 31436)
 (string-bytes 1 73415709)
 (vectors 16 135734)
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 (buffers 992 63))

^ permalink raw reply	[flat|nested] 53+ messages in thread

end of thread, other threads:[~2022-10-09 11:59 UTC | newest]

Thread overview: 53+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-03-31  3:37 bug#54646: 29.0.50; set-fontset-font and font clipping issues Visuwesh
2022-03-31  5:34 ` Eli Zaretskii
2022-03-31  7:03   ` Visuwesh
2022-03-31  7:11     ` Eli Zaretskii
2022-03-31  7:35       ` Visuwesh
2022-03-31  8:45       ` Visuwesh
2022-03-31  9:04         ` Eli Zaretskii
2022-03-31  9:29           ` Visuwesh
2022-03-31  9:41             ` Eli Zaretskii
2022-03-31 12:16               ` Visuwesh
2022-03-31 14:04                 ` Eli Zaretskii
2022-03-31 13:44               ` Visuwesh
2022-03-31 14:10                 ` Eli Zaretskii
2022-03-31 14:12                   ` Eli Zaretskii
2022-03-31 15:07                   ` Visuwesh
2022-03-31 16:49                     ` Eli Zaretskii
2022-03-31 17:38                       ` Robert Pluim
2022-04-01  1:05                         ` Visuwesh
2022-04-01  3:08                           ` Visuwesh
2022-04-01  8:49                             ` Robert Pluim
2022-04-01 10:54                               ` Eli Zaretskii
2022-04-01 11:38                                 ` Visuwesh
2022-04-01 12:14                                   ` Eli Zaretskii
2022-04-01 13:10                                     ` Visuwesh
2022-04-01 14:19                                       ` Eli Zaretskii
2022-04-01 14:58                                 ` Visuwesh
2022-04-01 15:27                                   ` Eli Zaretskii
2022-04-01 16:40                                     ` Visuwesh
2022-04-01 17:58                                       ` Eli Zaretskii
2022-04-03  9:15                                         ` Visuwesh
2022-04-03 10:06                                           ` Eli Zaretskii
2022-04-03 10:26                                             ` Visuwesh
2022-04-03 10:50                                               ` Eli Zaretskii
2022-04-03 11:10                                                 ` Visuwesh
2022-04-21 14:50                                                   ` Visuwesh
2022-04-22  7:23                                                     ` Eli Zaretskii
2022-04-22 10:46                                                       ` Visuwesh
2022-04-22 10:48                                                         ` Eli Zaretskii
2022-06-11 13:54                                                           ` Visuwesh
2022-06-12  1:34                                                             ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-06-12  5:55                                                               ` Eli Zaretskii
2022-06-12  4:49                                                             ` Visuwesh
2022-06-12  5:53                                                             ` Eli Zaretskii
2022-06-12  7:47                                                               ` Visuwesh
2022-06-12 10:16                                                                 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-10-08 11:48                                                             ` Visuwesh
2022-10-08 12:42                                                               ` Eli Zaretskii
2022-10-08 12:53                                                                 ` Visuwesh
2022-10-08 13:00                                                                   ` Eli Zaretskii
2022-10-09 11:31                                                                   ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-10-09 11:59                                                                     ` Visuwesh
2022-03-31  7:48     ` Eli Zaretskii
2022-03-31  8:47       ` Visuwesh

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