Edited Issue: VS hangs when editing jade [848]

Beta build, VS 2013 Update 1

Using the following jade (file attached just in case):
```
extends layout

block content
.jumbotron
```

Place your cursor on line 4 col 2 (check your status bar) and type a dot '.' in order to change the line to:
space dot space dot jumbotron

Result: VS hangs in the jade tokenizer with high CPU