On Feb 18, 2008, at 23:11 , Tanaka Akira wrote:

> More problems:
>
> % ./miniruby -e 'p %r(\))'
> -e:1: unmatched ): /)/
> % ./miniruby -e 'p %r|\|| =~ "a"'
> 0
> % ./miniruby -e 'p %r?\??'
> -e:1: invalid regular expression; there's no previous pattern, to  
> which '?' would define cardinality at 1: /?/

thanks... I'll look into these problems and try to find a compromise.