Handle movablelimits on TeXAtom elements. Resolves issue #1197.

unpacked/extensions/toMathML.js

@@ -186,8 +186,15 @@ MathJax.Hub.Register.LoadHook("[MathJax]/jax/element/mml/jax.js",function () {
   MML.munderover.Augment({
     toMathML: function (space) {
       var tag = this.type;
-      if (this.data[this.under] == null) {tag = "mover"}
+      var base = this.data[this.base];
-      if (this.data[this.over] == null)  {tag = "munder"}
+      if (base && base.isa(MML.TeXAtom) && base.movablelimits && !base.Get("displaystyle")) {
+        type = "msubsup";
+        if (this.data[this.under] == null) {tag = "msup"}
+        if (this.data[this.over] == null)  {tag = "msub"}
+      } else {
+        if (this.data[this.under] == null) {tag = "mover"}
+        if (this.data[this.over] == null)  {tag = "munder"}
+      }
       var attr = this.toMathMLattributes();
       delete this.data[0].inferred;
       var data = [];

unpacked/jax/input/TeX/jax.js

@@ -1367,6 +1367,7 @@
       }
       op.movesupsub = (limits ? true : false);
       op.Core().movablelimits = false;
+      if (op.movablelimits) op.movablelimits = false;
     },
     
     Over: function (name,open,close) {

unpacked/jax/output/CommonHTML/jax.js

@@ -2054,13 +2054,14 @@
     MML.munderover.Augment({
       toCommonHTML: function (node,stretch) {
         var values = this.getValues("displaystyle","accent","accentunder","align");
-        if (!values.displaystyle && this.data[this.base] != null &&
+        var base = this.data[this.base];
-            this.data[this.base].CoreMO().Get("movablelimits"))
+        if (!values.displaystyle && base != null &&
+            (base.movablelimits || base.CoreMO().Get("movablelimits")))
                 return MML.msubsup.prototype.toCommonHTML.call(this,node,stretch);
         //
         //  Get the nodes for base and limits
         //
-        var base, under, over, nodes = [];
+        var under, over, nodes = [];
         if (stretch) {
           base = CHTML.getNode(node,"mjx-op");
           under = CHTML.getNode(node,"mjx-under");

unpacked/jax/output/HTML-CSS/jax.js

@@ -2713,8 +2713,9 @@
     MML.munderover.Augment({
       toHTML: function (span,HW,D) {
 	var values = this.getValues("displaystyle","accent","accentunder","align");
-	if (!values.displaystyle && this.data[this.base] != null &&
+        var base = this.data[this.base];
-	    this.data[this.base].CoreMO().Get("movablelimits"))
+	if (!values.displaystyle && base != null &&
+	    (base.movablelimits || base.CoreMO().Get("movablelimits")))
 	      {return MML.msubsup.prototype.toHTML.call(this,span)}
 	span = this.HTMLcreateSpan(span); var scale = this.HTMLgetScale();
 	var stack = HTMLCSS.createStack(span);
@@ -2753,8 +2754,8 @@
           if (box.bbox.w > WW) {WW = box.bbox.w}
         }}
 	var t = HTMLCSS.TeX.rule_thickness * this.mscale, factor = HTMLCSS.FONTDATA.TeX_factor;
-	var base = boxes[this.base] || {bbox: this.HTMLzeroBBox()};
 	var x, y, z1, z2, z3, dw, k, delta = 0;
+	base = boxes[this.base] || {bbox: this.HTMLzeroBBox()};
         if (base.bbox.ic) {delta = 1.3*base.bbox.ic + .05} // adjust faked IC to be more in line with expeted results
 	for (i = 0, m = this.data.length; i < m; i++) {
 	  if (this.data[i] != null) {

unpacked/jax/output/NativeMML/jax.js

@@ -630,12 +630,19 @@
     MML.munderover.Augment({
       //
       //  Use proper version of munder, mover, or munderover, depending on
-      //  which items are present
+      //  which items are present.  Handle movablelimits on TeXAtom base.
       //
       toNativeMML: function (parent) {
 	var type = this.type;
-	if (this.data[this.under] == null) {type = "mover"}
+        var base = this.data[this.base];
-	if (this.data[this.over] == null)  {type = "munder"}
+        if (base && base.isa(MML.TeXAtom) && base.movablelimits && !base.Get("displaystyle")) {
+          type = "msubsup";
+          if (this.data[this.under] == null) {type = "msup"}
+          if (this.data[this.over] == null)  {type = "msub"}
+        } else {
+          if (this.data[this.under] == null) {type = "mover"}
+          if (this.data[this.over] == null)  {type = "munder"}
+        }
 	var tag = this.NativeMMLelement(type);
 	this.NativeMMLattributes(tag);
 	if (this.data[0]) {delete this.data[0].inferred}

unpacked/jax/output/PreviewHTML/jax.js

@@ -750,8 +750,9 @@
     MML.munderover.Augment({
       toPreviewHTML: function (span) {
 	var values = this.getValues("displaystyle","accent","accentunder","align");
-	if (!values.displaystyle && this.data[this.base] != null &&
+        var base = this.data[this.base];
-	    this.data[this.base].CoreMO().Get("movablelimits")) {
+	if (!values.displaystyle && base != null &&
+	    (base.movablelimits || base.CoreMO().Get("movablelimits"))) {
           span = MML.msubsup.prototype.toPreviewHTML.call(this,span);
           //
           //  Change class to msubsup for CSS rules.

unpacked/jax/output/SVG/jax.js

@@ -1882,8 +1882,9 @@
       toSVG: function (HW,D) {
         this.SVGgetStyles();
 	var values = this.getValues("displaystyle","accent","accentunder","align");
-	if (!values.displaystyle && this.data[this.base] != null &&
+        var base = this.data[this.base];
-	    this.data[this.base].CoreMO().Get("movablelimits"))
+	if (!values.displaystyle && base != null &&
+	    (base.movablelimits || base.CoreMO().Get("movablelimits")))
 	      {return MML.msubsup.prototype.toSVG.call(this)}
         var svg = this.SVG(), scale = this.SVGgetScale(svg); this.SVGhandleSpace(svg);
 	var boxes = [], stretch = [], box, i, m, W = -SVG.BIGDIMEN, WW = W;
@@ -1909,8 +1910,8 @@
           if (boxes[i].w > WW) {WW = boxes[i].w}
         }}
         var t = SVG.TeX.rule_thickness * this.mscale;
-	var base = boxes[this.base] || {w:0, h:0, d:0, H:0, D:0, l:0, r:0, y:0, scale:scale};
 	var x, y, z1, z2, z3, dw, k, delta = 0;
+	base = boxes[this.base] || {w:0, h:0, d:0, H:0, D:0, l:0, r:0, y:0, scale:scale};
         if (base.ic) {delta = 1.3*base.ic + .05} // adjust faked IC to be more in line with expeted results
 	for (i = 0, m = this.data.length; i < m; i++) {
 	  if (this.data[i] != null) {