• description (and spec) modified ( -> If no match found, function should return an empty string )
• author's solution modifed to pass the tests
• "edges cases" ( casing, spaces,... ) added
• random test added.

Bad news : most solution invalidated (better now in beta).

Hope it sounds better now.

; ) )

I had to return "test f" to pass all tests. Don't know if that's been changed, but that's not an improvement.

Man, what a shambles. :[