From: Takaaki Tateishi Date: 2005-04-19T06:40:23+09:00 Subject: Re: BNF-like grammar specified DIRECTLY in Ruby Takaaki Tateishi wrote: > It's possible if you define methods shift and unshift. > A parser read a token using shift and push it back using unshift. Sorry, that is not correct. -- Takaaki Tateishi