Make sure mmultiscripts aligns HTML-CSS color element for prescripts.

Author: dpvc

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

@@ -139,14 +139,14 @@ MathJax.Hub.Register.StartupHook("HTML-CSS Jax Ready",function () {
             var w = box[k+1].bbox.w - box[k].bbox.w;
             if (w > 0) {
               if (isPre) {
-                box[k].style.paddingLeft = HTMLCSS.Em(w/(box[k].scale||1));
+                this.HTMLmoveColor(box[k],w,1);
                 BOX[k].w += w;
               } else {
                 HTMLCSS.createBlank(sub,w);
               }
             } else if (w < 0) {
               if (isPre) {
-                box[k+1].style.paddingLeft = HTMLCSS.Em(-w/(box[k+1].scale||1));
+                this.HTMLmoveColor(box[k+1],-w,-1);
                 BOX[k+1].w += -w;
               } else {
                 HTMLCSS.createBlank(sup,-w);
@@ -179,6 +179,16 @@ MathJax.Hub.Register.StartupHook("HTML-CSS Jax Ready",function () {
       }
       return BOX;
     },
+    HTMLmoveColor: function (box,w,sign) {
+      var W = w/(box.scale||1);
+      box.style.paddingLeft = HTMLCSS.Em(W);
+      var color = box.previousSibling;
+      if (color && (color.id||"").match(/^MathJax-Color-/)) {
+        color.style.marginLeft = HTMLCSS.Em(W+parseFloat(color.style.marginLeft));
+        color.style.marginRight = HTMLCSS.Em(sign*(W-parseFloat(color.style.marginRight)));
+      }
+      
+    },
     HTMLstretchH: MML.mbase.HTMLstretchH,
     HTMLstretchV: MML.mbase.HTMLstretchV
   });