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| author | Craig Jennings <c@cjennings.net> | 2026-02-09 09:41:36 -0600 |
|---|---|---|
| committer | Craig Jennings <c@cjennings.net> | 2026-02-09 09:41:36 -0600 |
| commit | fb4763757ce854ab8b273b02731cb53bb5d7e113 (patch) | |
| tree | eee1793173565b9bf5145273352e981f23169f2b /modules/mail-config.el | |
| parent | 569f9d77d6b887d7b134b946315e2afe167d765d (diff) | |
| download | dotemacs-fb4763757ce854ab8b273b02731cb53bb5d7e113.tar.gz dotemacs-fb4763757ce854ab8b273b02731cb53bb5d7e113.zip | |
fix(font): prevent HarfBuzz SIGSEGV crash on emoji in mu4e headers
Emacs 30.2 + HarfBuzz 12.3.2 segfaults when arabic-shape-gstring is
called on emoji characters during mu4e header rendering. Disable Arabic
composition ranges, set inhibit-compacting-font-caches, and disable
auto-composition in mu4e-headers-mode. Remove duplicate bidi settings
from system-defaults.el (already in early-init.el).
Diffstat (limited to 'modules/mail-config.el')
| -rw-r--r-- | modules/mail-config.el | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/modules/mail-config.el b/modules/mail-config.el index 28423f52..93989f97 100644 --- a/modules/mail-config.el +++ b/modules/mail-config.el @@ -16,10 +16,26 @@ ;; - followed by , (comma) next to each file you want to save, ;; - then RET (vertico-exit), to save selected attachments. ;; +;; Crash Fix: +;; auto-composition-mode is disabled in mu4e-headers-mode to prevent a +;; HarfBuzz SIGSEGV crash. Email subjects containing emoji trigger glyph +;; shaping via arabic-shape-gstring → hb_shape_full, which segfaults. +;; Disabling composition in headers is safe (no ligatures needed there). +;; ;;; Code: (require 'user-constants) +;; -------------------- HarfBuzz Crash Fix: Disable Composition --------------- +;; Disable auto-composition in mu4e headers to prevent SIGSEGV from HarfBuzz +;; when shaping emoji characters in email subjects. See Commentary above. + +(defun cj/disable-auto-composition () + "Disable `auto-composition-mode' in the current buffer." + (auto-composition-mode -1)) + +(add-hook 'mu4e-headers-mode-hook #'cj/disable-auto-composition) + ;; ------------------------------ Mark All Headers ----------------------------- ;; convenience function to mark all headers for an action |