From a714a91dc60ca7155f50b106d98cb9d1a9e500d9 Mon Sep 17 00:00:00 2001
From: "Davide P. Cervone" <dpvc@union.edu>
Date: Sat, 6 Dec 2014 17:36:23 -0500
Subject: [PATCH] Add a flag to Get() to look up only the inherited value, not
 the one from the element itself, so that toMathML() doesn't have to delete
 and replace the attibutes.  Resolves issue #971.

---
 unpacked/extensions/toMathML.js | 5 ++---
 unpacked/jax/element/mml/jax.js | 8 +++++---
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/unpacked/extensions/toMathML.js b/unpacked/extensions/toMathML.js
index 28135c383..49c16da1a 100644
--- a/unpacked/extensions/toMathML.js
+++ b/unpacked/extensions/toMathML.js
@@ -61,9 +61,8 @@ MathJax.Hub.Register.LoadHook("[MathJax]/jax/element/mml/jax.js",function () {
         if (this.type === "mstyle") {defaults = MML.math.prototype.defaults}
         for (var id in defaults) {if (!skip[id] && !copy[id] && defaults.hasOwnProperty(id)) {
           if (this[id] != null && this[id] !== defaults[id]) {
-            var value = this[id]; delete this[id];
-            if (this.Get(id) !== value) {attr.push(id+'="'+this.toMathMLattribute(value)+'"')}
-            this[id] = value;
+            if (this.Get(id,null,1) !== this[id])
+              attr.push(id+'="'+this.toMathMLattribute(this[id])+'"');
           }
         }}
       }
diff --git a/unpacked/jax/element/mml/jax.js b/unpacked/jax/element/mml/jax.js
index e37929acd..a6b2804cc 100644
--- a/unpacked/jax/element/mml/jax.js
+++ b/unpacked/jax/element/mml/jax.js
@@ -296,9 +296,11 @@ MathJax.ElementJax.mml.Augment({
       while (parent && parent.notParent) {parent = parent.parent}
       return parent;
     },
-    Get: function (name,nodefault) {
-      if (this[name] != null) {return this[name]}
-      if (this.attr && this.attr[name] != null) {return this.attr[name]}
+    Get: function (name,nodefault,noself) {
+      if (!noself) {
+        if (this[name] != null) {return this[name]}
+        if (this.attr && this.attr[name] != null) {return this.attr[name]}
+      }
       // FIXME: should cache these values and get from cache
       // (clear cache when appended to a new object?)
       var parent = this.Parent();