From: Tassilo Horn <tsdh@gnu.org>
Date: Fri, 10 Feb 2023 18:22:56 +0000 (+0100)
Subject: bug-reference: prevent match-data clobbering (bug#61395)
X-Git-Tag: emacs-29.0.90~455
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=4f053afe8e7;p=emacs.git

bug-reference: prevent match-data clobbering (bug#61395)

* lisp/progmodes/bug-reference.el (bug-reference-fontify): Wrap call
to syntax-ppss in save-match-data since it can clobber our
match-data (bug#61395).
---

diff --git a/lisp/progmodes/bug-reference.el b/lisp/progmodes/bug-reference.el
index 9f1439e6a04..bc280284588 100644
--- a/lisp/progmodes/bug-reference.el
+++ b/lisp/progmodes/bug-reference.el
@@ -174,7 +174,7 @@ subexpression 10."
                   (re-search-forward bug-reference-bug-regexp end-line 'move))
         (when (or (not bug-reference-prog-mode)
                   ;; This tests for both comment and string syntax.
-                  (nth 8 (syntax-ppss)))
+                  (nth 8 (save-match-data (syntax-ppss))))
           (let* ((bounds (bug-reference--overlay-bounds))
                  (overlay (or
                            (let ((ov (pop overlays)))