From: Junio C Hamano <junkio@cox.net>
Date: Thu, 13 Apr 2006 23:39:49 GMT
Subject: Re: [PATCH] Shell utilities: Guard against expr' magic tokens.
Message-ID: <7vodz5vyd6.fsf@assigned-by-dhcp.cox.net>
In-Reply-To: <slrne3tihk.1dq.mdw@metalzone.distorted.org.uk>

Mark Wooding <mdw@distorted.org.uk> writes:

> From: Mark Wooding <mdw@distorted.org.uk>
>
> Some words, e.g., `match', are special to expr(1), and cause strange
> parsing effects.  Track down all uses of expr and mangle the arguments
> so that this isn't a problem.

Gaaaaaaaaaah.  

    http://www.opengroup.org/onlinepubs/009695399/utilities/expr.html

says use of length, substr, index, match as string arguments
produces unspecified results, so obviously the program was
wrong.

Thanks.