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-rw-r--r--lisp/ChangeLog3
-rw-r--r--lisp/progmodes/perl-mode.el6
2 files changed, 7 insertions, 2 deletions
diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 0a2b34cb024..62aeaf7f92f 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,5 +1,8 @@
2011-01-24 Stefan Monnier <monnier@iro.umontreal.ca>
+ * progmodes/perl-mode.el (perl-syntax-propertize-special-constructs):
+ Don't move backward, so as not to fall in an inf-loop (bug#7736).
+
* progmodes/ruby-mode.el (ruby-syntax-propertize-function): (bug#7735)
Handle ?" and friends differently (e.g. don't use backrefs).
diff --git a/lisp/progmodes/perl-mode.el b/lisp/progmodes/perl-mode.el
index 85429ac96af..64cf2c989c2 100644
--- a/lisp/progmodes/perl-mode.el
+++ b/lisp/progmodes/perl-mode.el
@@ -360,7 +360,8 @@ The expansion is entirely correct because it uses the C preprocessor."
(t
;; This is regexp like quote thingy.
(setq char (char-after (nth 8 state)))
- (let ((twoargs (save-excursion
+ (let ((startpos (point))
+ (twoargs (save-excursion
(goto-char (nth 8 state))
(skip-syntax-backward " ")
(skip-syntax-backward "w")
@@ -384,7 +385,8 @@ The expansion is entirely correct because it uses the C preprocessor."
(goto-char (1+ (nth 8 state)))
(up-list 1)
t)
- (scan-error nil))
+ ;; In case of error, make sure we don't move backward.
+ (scan-error (goto-char startpos) nil))
(not (or (nth 8 (parse-partial-sexp
(point) limit nil nil state 'syntax-table))
;; If we have a self-paired opener and a twoargs