From f1e60eb3e02efdc19d86dc678955685d1d735083 Mon Sep 17 00:00:00 2001
From: Zhang Chiyuan <pluskid@gmail.com>
Date: Mon, 3 Mar 2008 03:04:41 +0000
Subject: [PATCH] undo-friendly delete-and-insert

---
 yasnippet.el | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/yasnippet.el b/yasnippet.el
index fe2df82..d4d3cc4 100644
--- a/yasnippet.el
+++ b/yasnippet.el
@@ -61,8 +61,9 @@ expanded.")
 (defun yas/expand-snippet (start end template)
   "Expand snippet at current point. Text between START and END
 will be deleted before inserting template."
-  (delete-region start end)
-  (insert template))
+  (goto-char start)
+  (insert template)
+  (delete-char (- end start)))
 
 (defun yas/define (mode key template)
   "Define a snippet. Expanding KEY into TEMPLATE."