* lisp/progmodes/cperl-mode.el (cperl-font-lock-fontify-region-function):

Don't infloop when expanding region over `multiline' syntax-type that
begins a line.

Fixes: debbugs:15778

2 files changed, 9 insertions, 2 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 9a1dc4bd13c..fb4f29befe1 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,9 @@
+2013-11-03  Nathan Trapuzzano  <nbtrap@nbtrap.com>  (tiny change)
+
+        * progmodes/cperl-mode.el (cperl-font-lock-fontify-region-function):
+        Don't infloop when expanding region over `multiline' syntax-type that
+        begins a line (bug#15778).
+
 2013-11-04  Stefan Monnier  <monnier@iro.umontreal.ca>
 
         * rect.el (rectangle-mark-mode): Rename from rectangle-mark.
diff --git a/lisp/progmodes/cperl-mode.el b/lisp/progmodes/cperl-mode.el
index 8a7d1e77bd2..36b05c89ea1 100644
--- a/lisp/progmodes/cperl-mode.el
+++ b/lisp/progmodes/cperl-mode.el
@@ -8900,8 +8900,9 @@ do extra unwind via `cperl-unwind-to-safe'."
                   (beginning-of-line)
                   (eq (get-text-property (setq beg (point)) 'syntax-type)
                       'multiline)))
-      (if (setq beg (cperl-beginning-of-property beg 'syntax-type))
-          (goto-char beg)))
+      (let ((new-beg (cperl-beginning-of-property beg 'syntax-type)))
+        (setq beg (if (= new-beg beg) nil new-beg))
+        (goto-char new-beg)))
     (setq beg (point))
     (goto-char end)
     (while (and end