From 3c47494d28d16216973fc2902c130fd02d0fdacd Mon Sep 17 00:00:00 2001
From: "Davide P. Cervone" <dpvc@union.edu>
Date: Thu, 2 Apr 2015 16:12:35 -0400
Subject: [PATCH] Handle empty table cells (still need to do something about
 setting the widths of columns with no entry in the top row).

---
 unpacked/jax/output/CommonHTML/autoload/mtable.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/unpacked/jax/output/CommonHTML/autoload/mtable.js b/unpacked/jax/output/CommonHTML/autoload/mtable.js
index 59da84aea..0b3f5fa5a 100644
--- a/unpacked/jax/output/CommonHTML/autoload/mtable.js
+++ b/unpacked/jax/output/CommonHTML/autoload/mtable.js
@@ -346,7 +346,7 @@ MathJax.Hub.Register.StartupHook("CommonHTML Jax Ready",function () {
         else if (CWIDTH[j].match(/%$/)) percent.push(j)
         else W[j] = CHTML.length2em(CWIDTH[j],W[j]);
         TW += W[j] + CSPACE[j];
-        row[j].style.width = CHTML.Em(W[j]);
+        if (row[j]) row[j].style.width = CHTML.Em(W[j]);
       }
       if (values.frame) TW += 2/CHTML.em;
       var hasFit = (fit.length > 0);
@@ -416,6 +416,7 @@ MathJax.Hub.Register.StartupHook("CommonHTML Jax Ready",function () {
         if (!state.HD) {h = H[i]; d = D[i]}
         for (var j = 0; j <= J; j++) {
           var cell = row[j], cdata = rdata.data[j];
+          if (!cdata) continue;
           if (cdata.CHTML.stretch === "V") cdata.CHTMLstretchV(h,d);
           else if (cdata.CHTML.stretch === "H") cdata.CHTMLstretchH(cell,W[j]);
         }