#1583 CoffeeScript lexer: keyword highlighting extends unconditionally on (and past) linefeed

[Alpha]

With the CoffeeScript lexer, add the keyword 'null' to set two (index 1), and enter the following text into the editor:

:::coffeescript
null
test
test

Put the cursor after 'null' and press enter twice. Now the entire document (from 'null' to the end) is highlighted in the same style.

[Alpha]

Attached patch seems to resolve this.
Also addressed in the patch is the case:

:::coffeescript
for i in [0...myArray.length]

To prevent 'myArray.length' from being highlighted as a number literal.

[Neil Hodgson]

Committed as [12a3a0] and [47d68e].