Update function and method definitions.

Author: zeekay

syntax/coffee.vim

@@ -119,16 +119,11 @@ syn match coffeeObjAssign /@\?\%(\I\|\$\)\%(\i\|\$\)*\s*\ze::\@!/ contains=@coff
 hi def link coffeeObjAssign Identifier
 
 " A function definition
-syn match coffeeFunction /@\?\I.*\w\+\ze\s*=\s*\(=>\|->\|(\)/ contains=@coffeeIdentifier display
+syn match coffeeFunction /@\?\I.*\w\+\ze\s*=\s*\((.\{-})\)\=\s*\(=>\|->\)/ display
 hi def link coffeeFunction coffeeStatement
 
 " A method definition
-syn match coffeeMethod /@\?\I.*\w\+\s*:\s*\(=>\|->\|(\)/ contains=@coffeeIdentifier display
-syn match coffeeFunction /@\?\I.*\w\+\ze\s*=\s*\(=>\|->\|(\)/ contains=@coffeeIdentifier display
-hi def link coffeeFunction coffeeStatement
-
-" A method definition
-syn match coffeeMethod /@\?\I.*\w\+\s*:\s*\(=>\|->\|(\)/ contains=@coffeeIdentifier display
+syn match coffeeMethod /@\?\I.*\w\+\ze\s*:\s*\((.\{-})\)\=\s*\(=>\|->\)/ display
 hi def link coffeeMethod coffeeObjAssign
 
 syn keyword coffeeTodo TODO FIXME XXX contained