From: Kevin Ballard <kballard@...>
Date: 2005-10-12T04:21:52+09:00
Subject: Re: Default argument values for blocks

Yukihiro Matsumoto wrote:
> Mostly because yacc does not allow it.  It confuses
>
>   lambda { |foo = bar| puts foo }
>
> as
>
>   lambda { |foo = (bar| puts foo) }
>
> and causes syntax error.

yacc? Maybe I was informed wrong, but I was under the impression that
Ruby used a hand-rolled parser.