diff --git a/lib/ace/mode/sh_highlight_rules.js b/lib/ace/mode/sh_highlight_rules.js
index 73ece2f8..43f536f4 100644
--- a/lib/ace/mode/sh_highlight_rules.js
+++ b/lib/ace/mode/sh_highlight_rules.js
@@ -99,6 +99,62 @@ var ShHighlightRules = function() {
             }, {
                 defaultToken: "string"
             }]
+        },  {
+            stateName: "heredoc",
+            onMatch : function(value, currentState, stack) {
+                var next = value[2] == '-' ? "indentedHeredoc" : "heredoc";
+                var tokens = value.split(this.splitRegex);
+                stack.push(next, tokens[4]);
+                return [
+                    {type:"constant", value: tokens[1]},
+                    {type:"text", value: tokens[2]},
+                    {type:"string", value: tokens[3]},
+                    {type:"support.class", value: tokens[4]},
+                    {type:"string", value: tokens[5]}
+                ];
+            },
+            regex : "(<<-?)(\\s*)(['\"`]?)([\\w\-]+)(['\"`]?)",
+            rules: {
+                heredoc: [{
+                    onMatch:  function(value, currentState, stack) {
+                        if (value === stack[1]) {
+                            stack.shift();
+                            stack.shift();
+                            this.next = stack[0] || "start";
+                            return "support.class";
+                        }
+                        this.next = "";
+                        return "string";
+                    },
+                    regex: ".*$",
+                    next: "start"
+                }],
+                indentedHeredoc: [{
+                    token: "string",
+                    regex: "^ +"
+                }, {
+                    onMatch:  function(value, currentState, stack) {
+                        if (value === stack[1]) {
+                            stack.shift();
+                            stack.shift();
+                            this.next = stack[0] || "start";
+                            return "support.class";
+                        }
+                        this.next = "";
+                        return "string";
+                    },
+                    regex: ".*$",
+                    next: "start"
+                }]
+            }
+        }, {
+            regex : "$",
+            token : "empty",
+            next : function(currentState, stack) {
+                if (stack[0] === "heredoc" || stack[0] === "indentedHeredoc")
+                    return stack[0];
+                return currentState;
+            }
         }, {
             token : "variable.language",
             regex : builtinVariable