allow enabling emmet from a mode

node_modules/ace/lib/ace/ext/emmet.js

@@ -212,7 +212,7 @@ AceEmmetEditor.prototype = {
      * @return {String}
      */
     getProfileName: function() {
-        switch(this.getSyntax()) {
+        switch (this.getSyntax()) {
           case "css": return "css";
           case "xml":
           case "xsl":
@@ -223,8 +223,10 @@ AceEmmetEditor.prototype = {
             if (!profile)
                 profile = this.ace.session.getLines(0,2).join("").search(/<!DOCTYPE[^>]+XHTML/i) != -1 ? "xhtml": "html";
             return profile;
+          default:
+            var mode = this.ace.session.$mode;
+            return mode.emmetConfig && mode.emmetConfig.profile || "xhtml";
         }
-        return "xhtml";
     },
 
     /**
@@ -392,15 +394,18 @@ exports.updateCommands = function(editor, enabled) {
     }
 };
 
-exports.isSupportedMode = function(modeId) {
+exports.isSupportedMode = function(mode) {
-    return modeId && /css|less|scss|sass|stylus|html|php|twig|ejs|handlebars/.test(modeId);
+    if (!mode) return false;
+    if (mode.emmetConfig) return true;
+    var id = mode.$id || mode;
+    return /css|less|scss|sass|stylus|html|php|twig|ejs|handlebars/.test(id);
 };
 
 var onChangeMode = function(e, target) {
     var editor = target;
     if (!editor)
         return;
-    var enabled = exports.isSupportedMode(editor.session.$modeId);
+    var enabled = exports.isSupportedMode(editor.session.$mode);
     if (e.enableEmmet === false)
         enabled = false;
     if (enabled) {

package.json

@@ -74,7 +74,7 @@
         "c9.ide.find.replace": "#e4daf722b8",
         "c9.ide.run.debug": "#23a188b91a",
         "c9.automate": "#47e2c429c9",
-        "c9.ide.ace.emmet": "#e5f1a92ac3",
+        "c9.ide.ace.emmet": "#0ab4c6cd68",
         "c9.ide.ace.gotoline": "#4d1a93172c",
         "c9.ide.ace.keymaps": "#43445d6306",
         "c9.ide.ace.repl": "#f3a62c1f2a",