From: Eric Mahurin <eric.mahurin@...>
Date: 2005-11-19T23:40:16+09:00
Subject: Re: Symbol#inspect bug?

On 11/19/05, Yukihiro Matsumoto <matz@ruby-lang.org> wrote:
> Hi,
>
> In message "Re: Symbol#inspect bug?"
>     on Sat, 19 Nov 2005 08:22:20 +0900, "Dominik Bathon" <dbatml@gmx.de> writes:
>
> |But it doesn't for symbols starting with a digit:
> |
> |irb(main):001:0> p :"9"
> |:9
>
> Which version are you using?
>
>   % ruby -ve 'p :"9"'
>   ruby 1.8.4 (2005-10-29) [i486-linux]
>   :"9"
>
> So it's reserved to be fixed.
>
>                                                         matz.

Thanks matz.  I just downloaded 1.8.4 preview1 and tried this out.  It
looks like only one case isn't fixed yet (:"["):

[eric@localhost ruby-1.8.4]$ ./ruby -v
ruby 1.8.4 (2005-10-29) [i686-linux]

[eric@localhost ruby-1.8.4]$ ./ruby
1.upto(255) do |c0|
    0.upto(255) do |c1|
        str = c0.chr
        str.concat(c1.chr) if c1.nonzero?
        inspect0 = ":#{str.inspect}"
        eval0 = eval(inspect0)
        inspect1 = eval0.inspect
        begin
            eval1 = eval(inspect1)
            eval1==eval0 or puts "#{eval1}!=#{eval0}"
        rescue SyntaxError
            puts "Couldn't eval(#{inspect1} = eval(#{inspect0}).inspect)"
        end
    end
end

Couldn't eval(:[ = eval(:"[").inspect)


I didn't realize that symbols can't handle empty strings or the null
character until I tried this.