From: KOSAKI Motohiro <kosaki.motohiro@...>
Date: 2011-03-07T22:15:17+09:00
Subject: [ruby-core:35456] Re: [Ruby 1.9 - Feature #4477] Kernel:exec and backtick (`) don't work for certain system commands

2011/3/7 Shota Fukumori <sorah@tubusu.net>:
>
> Issue #4477 has been updated by Shota Fukumori.
>
> I don't think this is Bug because that (Shebang less executing) is you shell's feature. not system's feature.

No. it is POSIX spec. But, FWIW, This behavior have been changed
intentionally.So, I doubt the issue is a documentation fault.

Currently `` don't use shell if command line string don't have
following shell meta characters.
         *?{}[]<>()~&|\\$;'`"\n

But, Which documentation describe it?