From: Peter Stephenson <p.stephenson@samsung.com>
To: Zsh hackers list <zsh-workers@zsh.org>
Subject: Re: Issue with ${var#(*_)(#cN,M)}
Date: Tue, 27 Oct 2015 10:00:34 +0000 [thread overview]
Message-ID: <20151027100034.45f487f0@pwslap01u.europe.root.pri> (raw)
In-Reply-To: <151020160422.ZM1778@torch.brasslantern.com>
Original problem
> } ~$ a='1_2_3_4_5_6'
> } ~$ echo ${a#(*_)(#c2)}
> } 2_3_4_5_6
On Tue, 20 Oct 2015 16:04:22 -0700
Bart Schaefer <schaefer@brasslantern.com> wrote:
> What's messing it up is the "*" operator and the backtracking that is
> implied because * can match anything.
Exactly. What's backtracking over what in what order here is a bit of
nightmare, and I'm not sure I'm likely to get my mind round it.
Unless someone does, you'll be better of sticking to
% a='1_2_3_4_5_6'
% echo ${a#([^_]#_)(#c2)}
3_4_5_6
and then we don't have the "*" within the group to worry about.
pws
next prev parent reply other threads:[~2015-10-27 10:10 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-19 9:33 Stephane Chazelas
2015-10-19 19:17 ` Bart Schaefer
2015-10-20 19:09 ` Stephane Chazelas
2015-10-20 23:04 ` Bart Schaefer
2015-10-27 10:00 ` Peter Stephenson [this message]
2015-10-27 10:46 ` Peter Stephenson
2015-10-27 11:03 ` Stephane Chazelas
2015-10-27 11:11 ` Peter Stephenson
2015-10-27 11:11 ` Stephane Chazelas
2015-10-27 11:37 ` Peter Stephenson
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