From: Leo <minilith@...>
Date: 2009-02-26T00:42:44+09:00
Subject: Re: Where is splat implemented? / How does it work?

>>> [*str]
> => ["oops"]
>
> vs
>
>>> [str.to_a]
> => [["oops"]]
>
> I'm really curious where / how this happens. If anyone can point me to
> either rubinius or to mri, I would be very grateful.

If you do grep -i splat *.c, you'll find hits in parse.c and compile.c
(for ruby 1.9.1).

I'd assume it's a mostly parser thing. That to_a comes into play
probably it because it makes sure it's an array it is unsplicing --
just an assumption.