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From: Roman Neuhauser <neuhauser@sigpipe.cz>
To: Peter Stephenson <p.stephenson@samsung.com>
Cc: zsh-users@zsh.org
Subject: Re: ${name/pattern/repl} with negated pattern
Date: Thu, 15 May 2014 20:18:31 +0200	[thread overview]
Message-ID: <20140515181831.GK1629@isis.sigpipe.cz> (raw)
In-Reply-To: <20140515163219.7b60d531@pwslap01u.europe.root.pri>

# p.stephenson@samsung.com / 2014-05-15 16:32:19 +0100:
> ^ means "anything, and I do mean anything, that doesn't match the
> following pattern".  You can see that the initial "x" doesn't match the
> pattern, because the pattern requires the "/" to match.  However, x/ or
> anything longer does match the pattern because of the *.  So the longest
> string at the head that doesn't match the pattern is "x".  So it removes
> that.

thanks, i suspected strongly it was my confusion with the negation.
i'll have to go and get some practice with pattern matching, i used to
do better.  and your suggestion of #% is spot on, it does fix it.
 
> I think you'd be better off with ${a:#^x/*},

agreed.

> So try ${(M)a:#x/*}.

yep, this is IMO easiest.

-- 
roman


  reply	other threads:[~2014-05-15 18:18 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-15 12:26 Roman Neuhauser
2014-05-15 15:32 ` Peter Stephenson
2014-05-15 18:18   ` Roman Neuhauser [this message]
2014-05-15 15:45 ` Bart Schaefer
2014-05-15 16:37   ` Roman Neuhauser
2014-05-15 17:16     ` Bart Schaefer
2014-05-15 18:39 ` Roman Neuhauser
2014-05-16  8:40   ` Peter Stephenson

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