Do not automatically close quotes when inserted inside a string.

src/app/language-mode.coffee

@@ -23,7 +23,10 @@ class LanguageMode
       cursorBufferPosition = @editSession.getCursorBufferPosition()
       nextCharachter = @editSession.getTextInBufferRange([cursorBufferPosition, cursorBufferPosition.add([0,1])])
 
-      autoCompleteOpeningBracket = @isOpeningBracket(text) and /\W|^$/.test(nextCharachter)
+      hasWordAfterCursor = /\w/.test(nextCharachter)
+      cursorInsideString = @tokenizedBuffer.isBufferPositionInsideString(cursorBufferPosition)
+
+      autoCompleteOpeningBracket = @isOpeningBracket(text) and not hasWordAfterCursor and not cursorInsideString
       skipOverExistingClosingBracket = false
       if @isClosingBracket(text) and nextCharachter == text
         if bracketAnchorRange = @bracketAnchorRanges.filter((anchorRange) -> anchorRange.getBufferRange().end.isEqual(cursorBufferPosition))[0]

src/app/tokenized-buffer.coffee

@@ -117,6 +117,10 @@ class TokenizedBuffer
         iterator(token, startOfToken, { stop }) if bufferRange.containsPoint(startOfToken)
         return unless keepLooping
 
+  isBufferPositionInsideString: (bufferPosition) ->
+    if lastScope = _.last(@scopesForPosition(bufferPosition))
+      /^string\./.test(lastScope)
+
   findOpeningBracket: (startBufferPosition) ->
     range = [[0,0], startBufferPosition]
     position = null