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Re: bracket expressions and POSIX

X-seq: zsh-workers 15207
From: Clint Adams <clint@xxxxxxx>
To: Andrej Borsenkow <Andrej.Borsenkow@xxxxxxxxxxxxxx>
Subject: Re: bracket expressions and POSIX
Date: Mon, 2 Jul 2001 09:31:22 -0400
Cc: Peter Stephenson <pws@xxxxxxxxxxxxxxxxxxxxxxxx>, Zsh hackers list <zsh-workers@xxxxxxxxxxxxxx>
In-reply-to: <000301c102be$19047990$21c9ca95@xxxxxxxxxxxxxx>; from Andrej.Borsenkow@xxxxxxxxxxxxxx on Mon, Jul 02, 2001 at 10:13:22AM +0400
Mailing-list: contact zsh-workers-help@xxxxxxxxxx; run by ezmlm
References: <20010630190039.59EB714286@xxxxxxxxxxxxxxxxxxxxxxxx> <000301c102be$19047990$21c9ca95@xxxxxxxxxxxxxx>

> Actually, SUS explicitly speaks about both quoting (when parsed by shell)
> and escaping (when pattern is interpreted).
> 
> <http://www.opengroup.org/onlinepubs/007908799/xcu/chap2.html#tag_001_013>

This is similar to POSIX, as is the reference on Bracket Expressions.
http://www.opengroup.org/onlinepubs/007908799/xbd/re.html#tag_007_003_005

> Note, that patterns in shell are *based* on regular expressions but not
> identical (that probably has confused you).

What confuses me is where it says that the backslash loses its special
meaning within a bracket expression.  I see that backslash-escapes
take precedence over bracket expressions in BRE's, but, as you noted,
pattern matching is not BRE's.

References:
- Re: bracket expressions and POSIX
  - From: Peter Stephenson
- RE: bracket expressions and POSIX
  - From: Andrej Borsenkow

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