nex3/haml — comment on commit f8319ef7d9f4b4bfe4b23930978ba27f6f288d4e
File: lib/haml/compiler.rb line 446
By cheald:

The reason for my implementation here is that you don't want to create a Proc if there's nothing to do with it. It's actually an optimization, even though it is a little ugly.

https://gist.github.com/1387024