From dac51a9f69ffd9e6559c815b264cd9c25fc78d30 Mon Sep 17 00:00:00 2001
From: "Davide P. Cervone" <dpvc@union.edu>
Date: Wed, 14 Jan 2015 11:12:22 -0500
Subject: [PATCH] Fix problem with empty scripts in SVG output.  Issue #949.

---
 unpacked/jax/output/SVG/autoload/multiline.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/unpacked/jax/output/SVG/autoload/multiline.js b/unpacked/jax/output/SVG/autoload/multiline.js
index fe526a891..4e8e228c4 100644
--- a/unpacked/jax/output/SVG/autoload/multiline.js
+++ b/unpacked/jax/output/SVG/autoload/multiline.js
@@ -473,8 +473,8 @@ MathJax.Hub.Register.StartupHook("SVG Jax Ready",function () {
       //
       if (end.length === 0) {
         var sup = this.data[this.sup], sub = this.data[this.sub], w = svg.w, data;
-        if (sup) {data = sup.SVGdata; svg.Add(sup.toSVG(),w+(data.dx||0),data.dy)}
-        if (sub) {data = sub.SVGdata; svg.Add(sub.toSVG(),w+(data.dx||0),data.dy)}
+        if (sup) {data = sup.SVGdata||{}; svg.Add(sup.toSVG(),w+(data.dx||0),data.dy)}
+        if (sub) {data = sub.SVGdata||{}; svg.Add(sub.toSVG(),w+(data.dx||0),data.dy)}
       }
     }