Add increase indent pattern for GFM scope

spec/fixtures/gfm.md

@@ -0,0 +1 @@
+  * First list item

src/app/text-mate-package.coffee

@@ -73,15 +73,27 @@ class TextMatePackage extends Package
 
     scopedProperties
 
+  readObjectFromPath: (path, callback) ->
+    object = null
+    error = null
+    if fs.isObjectPath(path)
+      object = fs.readObject(path)
+    else
+      plist.parseString fs.read(path), (e, data) ->
+        error = e
+        object = data[0]
+    error = throw new Error("Failed to load object at path `#{path}`") unless object
+    callback(error, object)
+
   getTextMatePreferenceObjects: ->
     preferenceObjects = []
     if fs.exists(@preferencesPath)
       for preferencePath in fs.list(@preferencesPath)
-        plist.parseString fs.read(preferencePath), (e, data) =>
+        @readObjectFromPath preferencePath, (e, object) =>
           if e
             console.warn "Failed to parse preference at path '#{preferencePath}'", e.stack
           else
-            preferenceObjects.push(data[0])
+            preferenceObjects.push(object)
     preferenceObjects
 
   propertiesFromTextMateSettings: (textMateSettings) ->

src/packages/gfm.tmbundle/Preferences/indent.cson

@@ -0,0 +1,4 @@
+'name': 'Indent'
+'scope': 'source.gfm'
+'settings':
+  'increaseIndentPattern': '^\\s*([\\*\\+-])[ \\t]+'

src/packages/gfm.tmbundle/spec/gfm-spec.coffee

@@ -132,3 +132,10 @@ describe "GitHub Flavored Markdown grammar", ->
     {tokens} = grammar.tokenizeLine("> Quotation")
     expect(tokens[0]).toEqual value: ">", scopes: ["source.gfm", "support.quote.gfm"]
     expect(tokens[1]).toEqual value: " Quotation", scopes: ["source.gfm", "comment.quote.gfm"]
+
+  describe "auto indent", ->
+    it "indents newlines entered after list lines", ->
+      config.set('editor.autoIndent', true)
+      editSession = fixturesProject.buildEditSessionForPath('gfm.md')
+      editSession.insertNewlineBelow()
+      expect(editSession.buffer.lineForRow(1)).toBe '    '