diff --git a/unpacked/jax/output/HTML-CSS/autoload/ms.js b/unpacked/jax/output/HTML-CSS/autoload/ms.js
index 59502d1fd..f9eeb9f2a 100644
--- a/unpacked/jax/output/HTML-CSS/autoload/ms.js
+++ b/unpacked/jax/output/HTML-CSS/autoload/ms.js
@@ -25,7 +25,7 @@
  */
 
 MathJax.Hub.Register.StartupHook("HTML-CSS Jax Ready",function () {
-  var VERSION = "2.3";
+  var VERSION = "2.3.1";
   var MML = MathJax.ElementJax.mml,
       HTMLCSS = MathJax.OutputJax["HTML-CSS"];
   
@@ -34,18 +34,11 @@ MathJax.Hub.Register.StartupHook("HTML-CSS Jax Ready",function () {
       span = this.HTMLhandleSize(this.HTMLcreateSpan(span));
       var values = this.getValues("lquote","rquote");
       var text = this.data.join("");  // FIXME:  handle mglyph?
-      var pattern = [];
-      if (values.lquote.length === 1) {pattern.push(this.HTMLquoteRegExp(values.lquote))}
-      if (values.rquote.length === 1) {pattern.push(this.HTMLquoteRegExp(values.rquote))}
-      if (pattern.length) {text = text.replace(RegExp("("+pattern.join("|")+")","g"),"\\$1")}
       this.HTMLhandleVariant(span,this.HTMLgetVariant(),values.lquote+text+values.rquote);
       this.HTMLhandleSpace(span);
       this.HTMLhandleColor(span);
       this.HTMLhandleDir(span);
       return span;
-    },
-    HTMLquoteRegExp: function (string) {
-      return string.replace(/([.*+?|{}()\[\]\\])/g,"\\$1");
     }
   });
   MML.ms.prototype.defaults.mathvariant = 'monospace';
diff --git a/unpacked/jax/output/SVG/autoload/ms.js b/unpacked/jax/output/SVG/autoload/ms.js
index 1e47ca72f..42d207c53 100644
--- a/unpacked/jax/output/SVG/autoload/ms.js
+++ b/unpacked/jax/output/SVG/autoload/ms.js
@@ -25,7 +25,7 @@
  */
 
 MathJax.Hub.Register.StartupHook("SVG Jax Ready",function () {
-  var VERSION = "2.3";
+  var VERSION = "2.3.1";
   var MML = MathJax.ElementJax.mml,
       SVG = MathJax.OutputJax.SVG;
   
@@ -36,18 +36,11 @@ MathJax.Hub.Register.StartupHook("SVG Jax Ready",function () {
       var values = this.getValues("lquote","rquote");
       var variant = this.SVGgetVariant(), scale = this.SVGgetScale();
       var text = this.data.join("");  // FIXME:  handle mglyph?
-      var pattern = [];
-      if (values.lquote.length === 1) {pattern.push(this.SVGquoteRegExp(values.lquote))}
-      if (values.rquote.length === 1) {pattern.push(this.SVGquoteRegExp(values.rquote))}
-      if (pattern.length) {text = text.replace(RegExp("("+pattern.join("|")+")","g"),"\\$1")}
       svg.Add(this.SVGhandleVariant(variant,scale,values.lquote+text+values.rquote));
       svg.Clean();
       this.SVGhandleColor(svg);
       this.SVGsaveData(svg);
       return svg;
-    },
-    SVGquoteRegExp: function (string) {
-      return string.replace(/([.*+?|{}()\[\]\\])/g,"\\$1");
     }
   });
   MML.ms.prototype.defaults.mathvariant = 'monospace';