Add error messages for failed file loads (in case there are errors in extenion names, for example); Don't call resetEquationNumbers if AMSmath hasn't been loaded; Fix a problem with   in MathML for producing speech text; reomve mml from result if not needed after creating speech text.

Author: dpvc

lib/mj-page.js

@@ -209,6 +209,9 @@ function ConfigureMathJax() {
       MathJax.Hub.Register.MessageHook("TeX Jax - parse error",function (message) {
         AddError("TeX parse error",message[1]);
       });
+      MathJax.Hub.Register.MessageHook("file load error",function (message) {
+        AddError("File load error",message[1]);
+      });
 
       //
       //  Set the delays to 0 (we don't need to update the screen)
@@ -545,7 +548,7 @@ function ConfigureTypeset() {
   //  Reset the MathJax counters for things
   //
   SVG.resetGlyphs(true);
-  TEX.resetEquationNumbers();
+  if (TEX.resetEquationNUmbers) TEX.resetEquationNumbers();
   MML.SUPER.ID = 0;
 
   //
@@ -668,7 +671,8 @@ function AdjustMML() {
     for (var i = nodes.length-1; i >= 0; i--) {
       var math = nodes[i].getElementsByTagName("math")[0]
       nodes[i].parentNode.replaceChild(math,nodes[i]);
-      if (data.speakText) math.setAttribute("alttext",speech.processExpression(math.outerHTML));
+      var alttext = speech.processExpression(math.outerHTML.replace(/ /g,"\u00A0"));
+      if (data.speakText) math.setAttribute("alttext",alttext);
     }
   }
 }

lib/mj-single.js

@@ -210,6 +210,9 @@ function ConfigureMathJax() {
       MathJax.Hub.Register.MessageHook("TeX Jax - parse error",function (message) {
         AddError("TeX parse error: "+message[1]);
       });
+      MathJax.Hub.Register.MessageHook("file load error",function (message) {
+        AddError("File load error: "+message[1]);
+      });
 
       //
       //  Set the delays to 0 (we don't need to update the screen)
@@ -433,6 +436,8 @@ function GetSpeech(result) {
     jax.root.alttext = result.speakText;
     if (jax.root.attrNames) {jax.root.attrNames.push("alttext")}
     result.mml = jax.root.toMathML('',jax);
+  } else {
+    delete result.mml;
   }
 }
 
@@ -613,7 +618,7 @@ function GetState(state) {
       state.defs = HTML.Element("defs");
       state.n = 0;
     }
-    TEX.resetEquationNumbers();
+    if (TEX.resetEquationNumbers) TEX.resetEquationNumbers();
     MML.SUPER.ID = ID = 0;
   }
 }