I had an IRC conversion with Sebastien Bacher and learned that things no longer work as I thought they did. Unlike what I thought, the snaps do no longer honor the font configuration of the host system, but live in their own world in this respect.
https://github.com/ubuntu/gnome-sdk/issues/49#issuecomment-1216321729 So, what's determining the default font for a snap application is this list: https://github.com/ubuntu/gnome-sdk/pull/72/files There is an apparent need to reconsider that list, but that's a separate thing. Let's first try to understand how the specific issue reported in this bug could happen. The list includes the fonts-noto-cjk package, which also installs 70-fonts-noto-cjk.conf. The latter includes: <match target="pattern"> <test name="lang"> <string>zh-cn</string> </test> <test name="family"> <string>sans-serif</string> </test> <edit name="family" mode="prepend" binding="strong"> <string>Noto Sans CJK SC</string> </edit> </match> Well, fonts-arphic-uming is also included currently, and it installs 65-fonts-arphic-uming.conf which includes: <alias> <family>sans-serif</family> <prefer> <family>AR PL UMing CN</family> <family>AR PL UMing HK</family> <family>AR PL UMing TW</family> </prefer> </alias> Note that this one is not language guarded, so it's effective irrespective of locale. But still, with the zh_CN.UTF-8 locale 70-fonts-noto-cjk.conf should safely result in Noto Sans CJK SC being preferred over AR PL UMing CN. To confirm that I installed the Chinese (Simplified) language in 23.04 and purged language-selector-common (which made gnome-control-center being uninstalled...). And yes: $ LC_CTYPE=zh_CN.UTF-8 fc-match NotoSansCJK-Regular.ttc: "Noto Sans CJK SC" "Regular" More playing with fc-match: $ LC_CTYPE=zh_CN.UTF-8 fc-match -a | grep -iE 'cjk sc|uming cn' | head -3 NotoSansCJK-Regular.ttc: "Noto Sans CJK SC" "Regular" NotoSansCJK-Bold.ttc: "Noto Sans CJK SC" "Bold" uming.ttc: "AR PL UMing CN" "Light" $ LC_CTYPE=en_US.UTF-8 fc-match -a | grep -iE 'cjk sc|uming cn' | head -3 uming.ttc: "AR PL UMing CN" "Light" NotoSansCJK-Regular.ttc: "Noto Sans CJK SC" "Regular" NotoSansCJK-Regular.ttc: "Noto Sans Mono CJK SC" "Regular" So I now have a (vague) theory about what happens when you install Ubuntu using the zh_CN.UTF-8 locale: While it honors the locale when determining which packages get installed (apparently, since fonts-arphic-uming is there), the locale is not properly taken into account at the stage when the default Chinese (Simplified) font of the snaps is determined. ** Bug watch added: github.com/ubuntu/gnome-sdk/issues #49 https://github.com/ubuntu/gnome-sdk/issues/49 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to fontconfig in Ubuntu. https://bugs.launchpad.net/bugs/2017076 Title: default Chinese font in snap apps is ugly Status in Snappy: New Status in fontconfig package in Ubuntu: New Status in language-selector package in Ubuntu: New Bug description: After installs Ubuntu 23.04 with Chinese language selected, the default font is chosen to AR PL UMing CN, which is very ugly. ProblemType: Bug DistroRelease: Ubuntu 23.04 Package: fontconfig 2.14.1-3ubuntu3 ProcVersionSignature: Ubuntu 6.2.0-20.20-generic 6.2.6 Uname: Linux 6.2.0-20-generic x86_64 ApportVersion: 2.26.1-0ubuntu2 Architecture: amd64 CasperMD5CheckResult: pass CloudArchitecture: x86_64 CloudID: none CloudName: none CloudPlatform: none CloudSubPlatform: config CurrentDesktop: ubuntu:GNOME Date: Thu Apr 20 14:18:45 2023 InstallationDate: Installed on 2023-04-20 (0 days ago) InstallationMedia: Ubuntu 23.04 "Lunar Lobster" - Release amd64 (20230418) ProcEnviron: LANG=zh_CN.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> SourcePackage: fontconfig UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/snappy/+bug/2017076/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
