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commit 905fb7fb7130fb3ae9ac7b542601e1df158c1561
parent 79a50b3abebee9613b227e96717d2842f133cd3c
Author: Emily Eisenberg <emily@khanacademy.org>
Date:   Thu, 25 Jul 2013 18:59:20 -0700

Don't run in Safari

Summary: Safari has weird bugs associated with inline-table and
vertical-align, so we just won't render in Safari.

Auditors: alpert

Diffstat:
M
katex.js
 | 
4
++++
M
utils.js
 | 
13
++++++++++++-

2 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/katex.js b/katex.js
@@ -244,6 +244,10 @@ var clearNode = function(node) {
 };
 
 var process = function(toParse, baseNode) {
+    if (utils.isSafari) {
+        throw new ParseError("KaTeX doesn't work on Safari");
+    }
+
     clearNode(baseNode);
     var tree = parseTree(toParse);
 
diff --git a/utils.js b/utils.js
@@ -13,6 +13,17 @@ function slowContains(list, elem) {
 
 var contains = Array.prototype.indexOf ? fastContains : slowContains;
 
+function isSafari() {
+    var userAgent = navigator.userAgent.toLowerCase();
+
+    // Steal these regexes from jQuery migrate for browser detection
+    var webkit = /(webkit)[ \/]([\w.]+)/.exec(userAgent);
+    var chrome = /(chrome)[ \/]([\w.]+)/.exec(userAgent);
+
+    return webkit && !chrome;
+}
+
 module.exports = {
-    contains: contains
+    contains: contains,
+    isSafari: isSafari()
 };