Handle movablelimits on TeXAtom of class OP in toMathML, NativeMML, and MathML input.

Author: dpvc

unpacked/extensions/toMathML.js

@@ -78,7 +78,10 @@ MathJax.Hub.Register.LoadHook("[MathJax]/jax/element/mml/jax.js",function () {
       var CLASS = []; if (this["class"]) {CLASS.push(this["class"])}
       if (this.isa(MML.TeXAtom) && SETTINGS.texHints) {
         var TEXCLASS = ["ORD","OP","BIN","REL","OPEN","CLOSE","PUNCT","INNER","VCENTER"][this.texClass];
-        if (TEXCLASS) {CLASS.push("MJX-TeXAtom-"+TEXCLASS)}
+        if (TEXCLASS) {
+          CLASS.push("MJX-TeXAtom-"+TEXCLASS)
+          if (TEXCLASS === "OP" && !this.movablelimits) CLASS.push("MJX-fixedlimits");
+        }
       }
       if (this.mathvariant && this.toMathMLvariants[this.mathvariant])
         {CLASS.push("MJX"+this.mathvariant)}

unpacked/jax/input/MathML/jax.js

@@ -76,7 +76,7 @@
       var mml, type = node.nodeName.toLowerCase().replace(/^[a-z]+:/,"");
       var match = (CLASS.match(/(^| )MJX-TeXAtom-([^ ]*)/));
       if (match) {
-        mml = this.TeXAtom(match[2]);
+        mml = this.TeXAtom(match[2],!CLASS.match(/MJX-fixedlimits/));
       } else if (!(MML[type] && MML[type].isa && MML[type].isa(MML.mbase))) {
         MathJax.Hub.signal.Post(["MathML Jax - unknown node type",type]);
         return MML.Error(_("UnknownNodeType","Unknown node type: %1",type));
@@ -88,9 +88,9 @@
       if (MATHML.config.useMathMLspacing) {mml.useMMLspacing = 0x08}
       return mml;
     },
-    TeXAtom: function (mclass) {
+    TeXAtom: function (mclass,movablelimits) {
       var mml = MML.TeXAtom().With({texClass:MML.TEXCLASS[mclass]});
-      if (mml.texClass === MML.TEXCLASS.OP) {mml.movesupsub = mml.movablelimits = true}
+      if (movablelimits) {mml.movesupsub = mml.movablelimits = true}
       return mml;
     },
     CheckClass: function (mml,CLASS) {

unpacked/jax/output/NativeMML/jax.js

@@ -533,7 +533,10 @@
         var CLASS = []; if (this["class"]) {CLASS.push(this["class"])}
         if (this.isa(MML.TeXAtom)) {
           var TEXCLASS = ["ORD","OP","BIN","REL","OPEN","CLOSE","PUNCT","INNER","VCENTER"][this.texClass];
-          if (TEXCLASS) {CLASS.push("MJX-TeXAtom-"+TEXCLASS)}
+          if (TEXCLASS) {
+            CLASS.push("MJX-TeXAtom-"+TEXCLASS)
+            if (TEXCLASS === "OP" && !this.movablelimits) CLASS.push("MJX-fixedlimits");
+          }
         }
         if (this.mathvariant && this.NativeMMLvariants[this.mathvariant])
           {CLASS.push("MJX"+this.mathvariant)}