From fa101db4e19cef140f51fda49289bcb4adee135c Mon Sep 17 00:00:00 2001
From: Emily Eisenberg <emily@khanacademy.org>
Date: Wed, 24 Jul 2013 14:49:21 -0700
Subject: [PATCH] Make katex always clean up after itself

Summary: This makes it more annoying to use locally, because it goes
away when you type something bad, but is much more useful in use in
khan-exercises and perseus.

Auditors: alpert
---
 katex.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/katex.js b/katex.js
index 757b80157..fa2699f13 100644
--- a/katex.js
+++ b/katex.js
@@ -244,6 +244,7 @@ var clearNode = function(node) {
 };
 
 var process = function(toParse, baseNode) {
+    clearNode(baseNode);
     var tree = parseTree(toParse);
 
     var style = Style.TEXT;
@@ -251,7 +252,6 @@ var process = function(toParse, baseNode) {
     var span = makeSpan(style.cls(), expression);
     var katexNode = makeSpan("katex", [span]);
 
-    clearNode(baseNode);
     baseNode.appendChild(katexNode);
 };