From 5cfd93ed8b8b678d6589523b64766390d0066c91 Mon Sep 17 00:00:00 2001
From: "A. Darian" <git@darian.af>
Date: Tue, 3 May 2016 19:52:49 +0100
Subject: [PATCH 1/3] Simply typeset function.

---
 jupyter-js-widgets/src/utils.js  | 25 +++----------------------
 jupyter-js-widgets/src/widget.js |  2 +-
 2 files changed, 4 insertions(+), 23 deletions(-)

diff --git a/jupyter-js-widgets/src/utils.js b/jupyter-js-widgets/src/utils.js
index 4cabd41009..46f09b10d4 100644
--- a/jupyter-js-widgets/src/utils.js
+++ b/jupyter-js-widgets/src/utils.js
@@ -156,29 +156,10 @@ function reject(message, log) {
  * text: option string
  */
 function typeset(element, text) {
-    if (arguments.length > 1) {
-        if (element.length) {
-            for (var i = 0; i < element.length; ++i) {
-                var el = element[i];
-                el.textContent = text;
-            }
-        } else {
-            element.textContent = text;
-        }
-    }
-    if (!window.MathJax) {
-      return;
-    }
-    var output = [];
-    if (element.length) {
-        for (var i = 0; i < element.length; ++i) {
-            var el = element[i];
-            output.push(MathJax.Hub.Queue(['Typeset', MathJax.Hub, el]));
-        }
-    } else {
-        output.push(MathJax.Hub.Queue(['Typeset', MathJax.Hub, element]));
+    element.textContent = text;
+    if (window.MathJax) {
+      MathJax.Hub.Queue(['Typeset', MathJax.Hub, element]);
     }
-    return output;
 }
 
 /**
diff --git a/jupyter-js-widgets/src/widget.js b/jupyter-js-widgets/src/widget.js
index ce7ec32172..d498af12ab 100644
--- a/jupyter-js-widgets/src/widget.js
+++ b/jupyter-js-widgets/src/widget.js
@@ -759,7 +759,7 @@ var DOMWidgetViewMixin = {
     },
 
     typeset: function(element, text){
-        utils.typeset.apply(null, arguments);
+        utils.typeset(element, text);
     }
 };
 

From 3e3df886b36dafb5e5f3304b25e2c438302281a9 Mon Sep 17 00:00:00 2001
From: "A. Darian" <git@darian.af>
Date: Tue, 3 May 2016 21:18:26 +0100
Subject: [PATCH 2/3] Update doc string and check for empty text param.

---
 jupyter-js-widgets/src/utils.js | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/jupyter-js-widgets/src/utils.js b/jupyter-js-widgets/src/utils.js
index 46f09b10d4..3988131312 100644
--- a/jupyter-js-widgets/src/utils.js
+++ b/jupyter-js-widgets/src/utils.js
@@ -143,20 +143,19 @@ function reject(message, log) {
 }
 
 /**
- * Apply MathJax rendering to an element, and optionally set its text
+ * Apply MathJax rendering to an element, and optionally set its text.
  *
  * If MathJax is not available, make no changes.
  *
- * Returns the output any number of typeset elements as an array or undefined if
- * MathJax was not available.
- *
  * Parameters
  * ----------
- * element: Node, NodeList, or jQuery selection
- * text: option string
+ * element: Node
+ * text: optional string
  */
 function typeset(element, text) {
-    element.textContent = text;
+    if (text) {
+        element.textContent = text;
+    }
     if (window.MathJax) {
       MathJax.Hub.Queue(['Typeset', MathJax.Hub, element]);
     }

From 39c409034db22e26c99a2d728a5a7b8822f6da60 Mon Sep 17 00:00:00 2001
From: "A. Darian" <git@darian.af>
Date: Tue, 3 May 2016 22:03:58 +0100
Subject: [PATCH 3/3] If text is an empty string, use it.

---
 jupyter-js-widgets/src/utils.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/jupyter-js-widgets/src/utils.js b/jupyter-js-widgets/src/utils.js
index 3988131312..e615dde171 100644
--- a/jupyter-js-widgets/src/utils.js
+++ b/jupyter-js-widgets/src/utils.js
@@ -153,7 +153,7 @@ function reject(message, log) {
  * text: optional string
  */
 function typeset(element, text) {
-    if (text) {
+    if (text !== void 0) {
         element.textContent = text;
     }
     if (window.MathJax) {