From d1303f41dabef5f504dbf98a98cb0937c99d6ae9 Mon Sep 17 00:00:00 2001
From: richo <richo@psych0tik.net>
Date: Wed, 28 Mar 2012 23:43:26 +1100
Subject: [PATCH] Correctly hilight variables

---
 lib/ace/mode/sh_highlight_rules.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/ace/mode/sh_highlight_rules.js b/lib/ace/mode/sh_highlight_rules.js
index 5551e766..2cf14fbb 100644
--- a/lib/ace/mode/sh_highlight_rules.js
+++ b/lib/ace/mode/sh_highlight_rules.js
@@ -73,6 +73,10 @@ var ShHighlightRules = function() {
     var floatNumber = "(?:" + exponentFloat + "|" + pointFloat + ")";
     var fileDescriptor = "(?:&" + intPart + ")";
 
+    var variableName = "[a-zA-Z][a-zA-Z0-9_]*";
+
+    var variable = "(?:(?:\\$" + variableName + ")|(?:" + variableName + "=))";
+
     this.$rules = {
         "start" : [ {
             token : "comment",
@@ -80,6 +84,9 @@ var ShHighlightRules = function() {
         }, {
             token : "string",           // " string
             regex : '"(?:[^\\\\]|\\\\.)*?"'
+        }, {
+            token : "variable",
+            regex : variable
         }, {
             token : "support.function",
             regex : fileDescriptor