X-Recipient:	archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status:	No, hits=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU
X-Spam-Check-By:	sourceware.org
X-Yahoo-SMTP:	mjD.OBqswBAPbVUxYJaYPvc61jLEnpq8VnBwJGdbEJOPA9xw
Message-ID:	<4C968FD9.30104@sbcglobal.net>
Date:	Sun, 19 Sep 2010 22:34:01 +0000
From:	Greg Chicares <gchicares AT sbcglobal DOT net>
User-Agent:	Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.8) Gecko/20100802 Thunderbird/3.1.2
MIME-Version:	1.0
To:	cygwin AT cygwin DOT com
Subject:	Re: awk gsub problem
References:	<AANLkTikzGH8GUZ5ZUytSJShfYE=KMyphyue83Q8XMm4- AT mail DOT gmail DOT com> <20100916092458 DOT GB15121 AT calimero DOT vinschen DOT de> <AANLkTimwcbmxMtfZWbkztef+fxQfKtoM9CsFOd38E2a3 AT mail DOT gmail DOT com> <20100918092139 DOT GE14602 AT calimero DOT vinschen DOT de> <20100918200851 DOT GA5760 AT calimero DOT vinschen DOT de> <AANLkTi=O_VkQEdXfCLsRQa40zM7min2X=cwosFM95oTU AT mail DOT gmail DOT com>
In-Reply-To:	<AANLkTi=O_VkQEdXfCLsRQa40zM7min2X=cwosFM95oTU@mail.gmail.com>
X-IsSubscribed:	yes
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com

On 2010-09-19 20:33Z, Lee wrote:
>
[...awk character ranges are locale-sensitive...]
> 
> Was the reply from the upstream maintainer answered on a mailing list?
>  (& if so, which one?)  I'd like to understand the problem they're
> solving..  I get the idea of "[[:lower:]]" working regardless of
> collating order of the current char set, but how "[a-z]" gets
> translated to something like "[aAbBcCdD...zZ]" boggles my mind.  It
> seems like they had to have gone out of their way to translate [a-z]
> into a case-insensitive RE.

Discussed here:
  http://www.gnu.org/manual/gawk/html_node/Character-Lists.html#Character-Lists

And here's the same 'aAbBcC' question for 'ls' on solaris:
  http://groups.google.com/group/comp.unix.solaris/browse_thread/thread/8526e1b6eb18fb31/
It's not specific to gawk.

>    --traditional
>       Traditional Unix awk regular expressions are matched.  The GNU
> operators are not special, interval expressions are not available, and
> neither are the POSIX character classes ([[:alnum:]] and so on).

That option doesn't override the locale; to do that, see:
  http://www.gnu.org/manual/gawk/html_node/Locales.html#Locales

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

- Raw text -