add a gitignore mode

demo/kitchen-sink/docs/gitignore.gitignore

@@ -0,0 +1,8 @@
+# A sample .gitiignore file.
+
+.buildlog
+.DS_Store
+.svn
+
+# Also ignore user settings...
+/.settings

lib/ace/ext/modelist.js

@@ -70,6 +70,7 @@ var supportedModes = {
     Forth:       ["frt|fs|ldr"],
     FTL:         ["ftl"],
     Gherkin:     ["feature"],
+    Gitignore:   ["^.gitignore"],
     Glsl:        ["glsl|frag|vert"],
     golang:      ["go"],
     Groovy:      ["groovy"],

lib/ace/mode/gitignore.js

@@ -0,0 +1,19 @@
+
+define(function(require, exports, module) {
+"use strict";
+
+var oop = require("../lib/oop");
+var TextMode = require("./text").Mode;
+var GitignoreHighlightRules = require("./gitignore_highlight_rules").GitignoreHighlightRules;
+
+var Mode = function() {
+    this.HighlightRules = GitignoreHighlightRules;
+};
+oop.inherits(Mode, TextMode);
+
+(function() {
+    this.$id = "ace/mode/gitignore";
+}).call(Mode.prototype);
+
+exports.Mode = Mode;
+});

lib/ace/mode/gitignore_highlight_rules.js

@@ -0,0 +1,28 @@
+define(function(require, exports, module) {
+"use strict";
+
+var oop = require("../lib/oop");
+var TextHighlightRules = require("./text_highlight_rules").TextHighlightRules;
+
+var GitignoreHighlightRules = function() {
+    this.$rules = {
+        "start" : [
+            {
+                token : "comment",
+                regex : /[#].*$/
+            }
+        ]
+    };
+    
+    this.normalizeRules();
+};
+
+GitignoreHighlightRules.metaData = {
+    fileTypes: ['gitignore'],
+    name: 'Gitignore'
+};
+
+oop.inherits(GitignoreHighlightRules, TextHighlightRules);
+
+exports.GitignoreHighlightRules = GitignoreHighlightRules;
+});