It would have been nice if their code example for this feature showed how the code would have looked in the prior version of Coffeescript.
$('body')
.click (e) ->
$('.box')
.fadeIn('fast')
.addClass '.active'
.css 'background', 'white'
result = range(1, 3)
.concat(range 4, 6)
.map((x) -> x * x)
.filter (x) -> x % 2 is 0 result = range(1, 3).concat(range 4, 6).map((x) -> x * x).filter (x) -> x % 2 is 0
result = range 1, 3
result = result.concat range 4, 6
result = result.map (x) -> x * x
result = result.filter (x) -> x % 2 is 0