Public bug reported: Package: fontconfig 2.17.1-3ubuntu1 (Ubuntu 26.04 "resolute")
Any application that requests a specific family together with spacing=100 (terminal emulators such as Ghostty do) silently gets DejaVu Sans Mono instead of the configured font. Minimal reproduction: $ fc-match 'JetBrainsMono NFM:spacing=100' DejaVuSansMono.ttf: "DejaVu Sans Mono" "Book" # wrong $ fc-match 'JetBrainsMono NFM' JetBrainsMonoNerdFontMono-Regular.ttf: "JetBrainsMono Nerd Font Mono" "Regular" Cause: /etc/fonts/conf.d/48-spacing.conf prepends the literal `monospace` to the query's `family` list when spacing=100 is requested: <edit name="family" mode="prepend"><string>monospace</string></edit> fontconfig family matching is positional, so the injected generic name outranks the family the application actually asked for. Fixed upstream in fontconfig 2.18.2: https://gitlab.freedesktop.org/fontconfig/fontconfig/-/work_items/539 https://gitlab.freedesktop.org/fontconfig/fontconfig/-/merge_requests/532 The upstream fix uses the `genericfamily` pattern object that only exists since 2.18.0, so it cannot be applied verbatim to 2.17.1; the equivalent change for 2.17.1 is mode="prepend" -> mode="append" in 48-spacing.conf. Request: update fontconfig to >= 2.18.2 (or apply the 2.17-compatible equivalent). ** Affects: fontconfig (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2169400 Title: fontconfig 2.17.1: 48-spacing.conf overrides the application-selected font family To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fontconfig/+bug/2169400/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
