cloudhead/less.js — comment on commit 624c297e7be093bd2234c4fac8d2bfa085cfadae
File:  line 0
By matthewdl:

I think the latter is much more preferable, because the first statement is not a conditional, so it doesn't make sense to join it with an ```and```. It should definitely have it's own keyword, and ```when``` looks like the keyword convention for guards.