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commit b1abd818bdbd82f2490d7fc8b6a8279859ef8c1a
parent 235c5dc40bbccfa879d5963717789df589c1497b
Author: Davide P. Cervone <dpvc@union.edu>
Date:   Wed,  3 Oct 2012 06:22:19 -0400

Fix problem with adding widths when child node is empty that causes linebreaking to produce math processing errors.  (Reported by StackExchange community.)

Diffstat:
M
unpacked/jax/output/HTML-CSS/autoload/multiline.js
 | 
12
+++++++-----
M
unpacked/jax/output/SVG/autoload/multiline.js
 | 
8
+++++---

2 files changed, 12 insertions(+), 8 deletions(-)
diff --git a/unpacked/jax/output/HTML-CSS/autoload/multiline.js b/unpacked/jax/output/HTML-CSS/autoload/multiline.js
@@ -168,11 +168,13 @@ MathJax.Hub.Register.StartupHook("HTML-CSS Jax Ready",function () {
       return better;
     },
     HTMLaddWidth: function (i,info,scanW) {
-      var span = this.data[i].HTMLspanElement();
-      scanW += span.bbox.w;
-      if (span.style.paddingLeft)  {scanW += HTMLCSS.unEm(span.style.paddingLeft)}
-      if (span.style.paddingRight) {scanW += HTMLCSS.unEm(span.style.paddingRight)}
-      info.W = info.scanW = scanW; info.w = 0;
+      if (this.data[i]) {
+        var span = this.data[i].HTMLspanElement();
+        scanW += span.bbox.w;
+        if (span.style.paddingLeft)  {scanW += HTMLCSS.unEm(span.style.paddingLeft)}
+        if (span.style.paddingRight) {scanW += HTMLCSS.unEm(span.style.paddingRight)}
+        info.W = info.scanW = scanW; info.w = 0;
+      }
       return scanW;
     },
     
diff --git a/unpacked/jax/output/SVG/autoload/multiline.js b/unpacked/jax/output/SVG/autoload/multiline.js
@@ -171,9 +171,11 @@ MathJax.Hub.Register.StartupHook("SVG Jax Ready",function () {
       return better;
     },
     SVGaddWidth: function (i,info,scanW) {
-      var svg = this.data[i].SVGdata;
-      scanW += svg.w + svg.x; if (svg.X) {scanW += svg.X}
-      info.W = info.scanW = scanW; info.w = 0;
+      if (this.data[i]) {
+        var svg = this.data[i].SVGdata;
+        scanW += svg.w + svg.x; if (svg.X) {scanW += svg.X}
+        info.W = info.scanW = scanW; info.w = 0;
+      }
       return scanW;
     },