From: Chet Ramey <chet.ramey@case.edu>
To: Peter Stephenson <p.stephenson@samsung.com>,
Martijn Dekker <martijn@inlv.org>,
zsh-workers@zsh.org
Cc: chet.ramey@case.edu
Subject: Re: 'case' pattern matching bug with bracket expressions
Date: Thu, 14 May 2015 19:59:59 -0400 [thread overview]
Message-ID: <555536FF.5040505@case.edu> (raw)
In-Reply-To: <20150514171716.69cd99c9@pwslap01u.europe.root.pri>
On 5/14/15 12:17 PM, Peter Stephenson wrote:
> I don't *think* the following patch makes anything worse, but notice
> you're in any case on fairly soggy ground here, even in bash:
>
> $ var=
> $ [[ ']' = [$var]*[$var] ]] && echo matches
> matches
>
> and presumably Chet would agree with me that's required by the
> standard.
Yes, everybody matches `]' with that pattern. Posix requires that the
`case' equivalent match (`[[' is not in the standard), since it specifies
the expansions that take place on the pattern before you attempt
matching using the pattern matching rules.
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU chet@case.edu http://cnswww.cns.cwru.edu/~chet/
next prev parent reply other threads:[~2015-05-15 0:00 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-14 13:14 Martijn Dekker
2015-05-14 13:50 ` [BUG] " Martijn Dekker
2015-05-14 14:42 ` Peter Stephenson
2015-05-14 15:47 ` Martijn Dekker
2015-05-14 15:55 ` Peter Stephenson
2015-05-14 17:30 ` Bart Schaefer
2015-05-15 0:05 ` Chet Ramey
2015-05-14 23:51 ` Chet Ramey
2015-05-15 8:38 ` Peter Stephenson
2015-05-15 20:48 ` Peter Stephenson
2015-05-15 21:48 ` Bart Schaefer
2015-05-14 16:17 ` Peter Stephenson
2015-05-14 17:07 ` Martijn Dekker
2015-05-14 17:43 ` Peter Stephenson
2015-05-15 0:09 ` Chet Ramey
2015-05-14 23:59 ` Chet Ramey [this message]
2015-05-14 21:23 ` Chet Ramey
2015-05-14 23:45 ` Chet Ramey
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