Lexer: Input of colon (:) throws exception

[richdougherty]

One other exception on CoffeeScript 1.11.0 and 1.12.6. An input of : results an exception with the text Cannot read property 'newLine' of undefined. Sorry I haven't got the stack trace for this one.

This may be related to #4575.

I've informally tested most other punctuation on my keyboard and these are the only two lexer errors I get.

[lydell]

@richdougherty Is this what you mean? http://coffeescript.org/#try:%3A

[richdougherty]

Yes that's what I mean. Expected output is something like Error on line 1: unexpected :. Actually, I don't have a stack trace so I'm not sure if the error is in the lexer or not.

[GeoffreyBooth]

Fixed by #4662.