From 72c6c4cd7b0e58631e0963ea5345890e1b0aa04b Mon Sep 17 00:00:00 2001
From: Noam Postavsky <npostavs@users.sourceforge.net>
Date: Sun, 11 Oct 2015 21:18:52 -0400
Subject: [PATCH] Fix #618; save match data in yas--scan-sexps

* yasnippet.el (yas--scan-sexps): Save match data.
---
 yasnippet.el | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/yasnippet.el b/yasnippet.el
index 706c86a..50973e9 100644
--- a/yasnippet.el
+++ b/yasnippet.el
@@ -4015,8 +4015,9 @@ with their evaluated value into `yas--backquote-markers-and-strings'."
 
 (defun yas--scan-sexps (from count)
   (ignore-errors
-    (with-syntax-table (standard-syntax-table)
-      (scan-sexps from count))))
+    (save-match-data ; `scan-sexps' may modify match data.
+      (with-syntax-table (standard-syntax-table)
+        (scan-sexps from count)))))
 
 (defun yas--make-marker (pos)
   "Create a marker at POS with nil `marker-insertion-type'."