From: Juri Linkov <juri@linkov.net>
To: 44784@debbugs.gnu.org
Subject: bug#44784: Combining accent is not combining
Date: Sat, 21 Nov 2020 21:17:09 +0200 [thread overview]
Message-ID: <87h7piy9qq.fsf@mail.linkov.net> (raw)
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Sorry that I noticed this regression only now,
but it's a pretty bad-looking regression:
0. emacs -Q
1. insert to the *scratch* buffer:
ä́ і́ Я́
In 26.3 everything is correct, and COMBINING ACUTE ACCENT
is combined above its previous character:
[-- Attachment #2: comb26.png --]
[-- Type: image/png, Size: 2983 bytes --]
[-- Attachment #3: Type: text/plain, Size: 590 bytes --]
Composed with the following character(s) "́" using this font:
xft:-PfEd-DejaVu Sans Mono-normal-normal-normal-*-22-*-*-*-m-0-iso10646-1
by these glyphs:
[0 1 1071 878 13 0 13 21 0 nil]
[0 1 769 649 0 5 11 18 -14 [-15 -4 0]]
In 26.3 (x86_64-pc-linux-gnu, GTK+ Version 3.24.14)
Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GSETTINGS GLIB
NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 XDBE XIM THREADS LIBSYSTEMD LCMS2
But in 27.1 COMBINING ACUTE ACCENT is not combined with its previous character:
[-- Attachment #4: comb27.png --]
[-- Type: image/png, Size: 2958 bytes --]
[-- Attachment #5: Type: text/plain, Size: 792 bytes --]
Composed with the following character(s) "́" using this font:
xfthb:-PfEd-DejaVu Sans Mono-normal-normal-normal-*-22-*-*-*-m-0-iso10646-1
by these glyphs:
[0 1 1071 878 13 0 13 16 0 nil]
[0 1 769 649 13 4 11 17 -13 [0 0 0]]
In 27.1 (x86_64-pc-linux-gnu, GTK+ Version 3.24.20)
Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND GPM DBUS GSETTINGS GLIB NOTIFY INOTIFY
ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE HARFBUZZ M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 XDBE XIM MODULES THREADS LIBSYSTEMD JSON
PDUMPER LCMS2 GMP
It seems in 26.3 it's correct because it uses XFT, but the problem in 27.1
is with HarfBuzz . Maybe HarfBuzz doesn't support combining accents on
some characters? It fails with the scripts above, but still has no problems
with plain Latin characters.
next reply other threads:[~2020-11-21 19:17 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-21 19:17 Juri Linkov [this message]
2020-11-21 20:05 ` bug#44784: Combining accent is not combining Eli Zaretskii
2020-11-21 20:13 ` Eli Zaretskii
2020-11-21 20:35 ` Juri Linkov
2020-11-22 3:35 ` Eli Zaretskii
2020-11-22 10:12 ` Stephen Berman
2020-11-22 15:28 ` Eli Zaretskii
2020-11-22 16:28 ` Stephen Berman
2020-11-22 16:52 ` Eli Zaretskii
2022-02-09 9:43 ` Lars Ingebrigtsen
2022-02-10 8:40 ` Juri Linkov
2022-02-10 10:49 ` Robert Pluim
2022-02-10 11:19 ` Lars Ingebrigtsen
2022-02-10 12:25 ` Eli Zaretskii
2020-11-21 20:08 ` Andreas Schwab
2020-11-21 20:30 ` Juri Linkov
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