:coffee
	'This is coffee script'

~
	:coffee
	  'This is coffee script'

----------------------------------------------------

[
	["filter-coffee", [
		["filter-name", ":coffee"],
		["string", "'This is coffee script'"]
	]],
	["punctuation", "~"],
	["filter-coffee", [
        ["filter-name", ":coffee"],
        ["string", "'This is coffee script'"]
    ]]
]

----------------------------------------------------

Checks for CoffeeScript filter in Haml. The tilde serves only as a separator.