From db5f5ece0b6c87bbb2d0584010b97f8723dde69d Mon Sep 17 00:00:00 2001
From: Michael Jackson <mjijackson@gmail.com>
Date: Mon, 19 Dec 2011 16:39:47 -0800
Subject: [PATCH] Faster escapeHTML

See http://jsperf.com/string-replace-function
---
 mustache.js | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/mustache.js b/mustache.js
index 47def07..cc42f3d 100644
--- a/mustache.js
+++ b/mustache.js
@@ -35,13 +35,18 @@ var Mustache = function () {
     }
   }
 
+  var escapeMap = {
+    "&": "&amp;",
+    "<": "&lt;",
+    ">": "&gt;",
+    '"': '&quot;',
+    "'": '&#39;'
+  };
+
   function escapeHTML(string) {
-    return String(string)
-      .replace(/&(?!\w+;)/g, "&amp;")
-      .replace(/</g, "&lt;")
-      .replace(/>/g, "&gt;")
-      .replace(/"/g, "&quot;")
-      .replace(/'/g, "&#39;");
+    return String(string).replace(/&(?!\w+;)|[<>"']/g, function (s) {
+      return escapeMap[s] || s;
+    });
   }
 
   var regexCache = {};