From: Colin Bartlett <colinb2r@...>
Date: 2009-12-22T11:14:21+09:00
Subject: Re: Strange behavior of unary +@ for Fixnum?

On Mon, Dec 21, 2009 at 10:51 PM, Alexandre Mutel
<alexandre_mutel@yahoo.fr> wrote:
> I suspect Ruby's parser to perform some unexpected "optimization"
> here...

I haven't looked at the source code, but I think I'm right in saying that
Ruby parses (-7) as an _integer literal_, unless it's an expression like (-7**2)
in which case it's parsed as (-(7**2)), that is (7**2).send( :-@ )
By analogy, it seems that the parser is treating (+7) as an integer literal,
not as 7.send( :+@ ) ?