Don't auto-indent ff a grammar doesn't have an indent/outdent regex

src/app/language-mode.coffee

@@ -95,7 +95,8 @@ class LanguageMode
 
     precedingLine = @editSession.lineForBufferRow(precedingRow)
     scopes = @tokenizedBuffer.scopesForPosition([precedingRow, Infinity])
-    increaseIndentPattern = new OnigRegExp(TextMateBundle.getPreferenceInScope(scopes[0], 'increaseIndentPattern'))
+    increaseIndentPattern = TextMateBundle.indentRegexForScope(scopes[0])
+    return unless increaseIndentPattern
 
     currentIndentation = @buffer.indentationForRow(bufferRow)
     desiredIndentation = @buffer.indentationForRow(precedingRow)
@@ -105,8 +106,10 @@ class LanguageMode
 
   autoDecreaseIndentForBufferRow: (bufferRow) ->
     scopes = @tokenizedBuffer.scopesForPosition([bufferRow, 0])
-    increaseIndentPattern = new OnigRegExp(TextMateBundle.getPreferenceInScope(scopes[0], 'increaseIndentPattern'))
-    decreaseIndentPattern = new OnigRegExp(TextMateBundle.getPreferenceInScope(scopes[0], 'decreaseIndentPattern'))
+    increaseIndentPattern = TextMateBundle.indentRegexForScope(scopes[0])
+    decreaseIndentPattern = TextMateBundle.outdentRegexForScope(scopes[0])
+    return unless increaseIndentPattern and decreaseIndentPattern
+
     line = @buffer.lineForRow(bufferRow)
     return unless decreaseIndentPattern.test(line)
 

src/app/project.coffee

@@ -11,7 +11,7 @@ ChildProcess = require 'child-process'
 module.exports =
 class Project
   tabText: '  '
-  autoIndent: false
+  autoIndent: true
   softTabs: true
   softWrap: false
   rootDirectory: null

src/app/text-mate-bundle.coffee

@@ -4,7 +4,6 @@ plist = require 'plist'
 
 TextMateGrammar = require 'text-mate-grammar'
 
-
 module.exports =
 class TextMateBundle
   @grammarsByFileType: {}
@@ -30,12 +29,20 @@ class TextMateBundle
     @grammarsByFileType[extension] or @grammarsByFileType["txt"]
 
   @getPreferenceInScope: (scopeSelector, preferenceName) ->
-    @preferencesByScopeSelector[scopeSelector][preferenceName]
+    @preferencesByScopeSelector[scopeSelector]?[preferenceName]
 
   @lineCommentStringForScope: (scope) ->
     shellVariables = @getPreferenceInScope(scope, 'shellVariables')
     lineComment = (_.find shellVariables, ({name}) -> name == "TM_COMMENT_START")['value']
 
+  @indentRegexForScope: (scope) ->
+    if source = @getPreferenceInScope(scope, 'increaseIndentPattern')
+      new OnigRegExp(source)
+
+  @outdentRegexForScope: (scope) ->
+    if source = @getPreferenceInScope(scope, 'decreaseIndentPattern')
+      new OnigRegExp(source)
+
   grammars: null
 
   constructor: (@path) ->