object method call vs module call?

[John Gabriele <jgabriele@...>]

Hi lua-l,

I understand that:

    > s = 'hello there hi'
    > -- this
    > s:find('there')
    7       11
    > -- is the same as
    > s.find(s, 'there')
    7       11

but what exactly is going on with:

    > -- this
    > s.find(s, 'there')
    7       11
    > -- vs
    > string.find(s, 'there')
    7       11

?

Thanks,
-- John