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Re: Dealing with character ranges in grep


From: Paolo Bonzini
Subject: Re: Dealing with character ranges in grep
Date: Mon, 27 Jun 2011 15:06:25 +0200
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110428 Fedora/3.1.10-1.fc15 Mnenhy/0.8.3 Thunderbird/3.1.10

On 06/16/2011 10:44 AM, Jim Meyering wrote:
>  To make this proposed change go through, that configure-time option would
>  have to be eliminated, so that we always build with the gnulib-provided
>  regex code.  Of course, if glibc ever changes, we can detect that and
>  automatically prefer it when possible.

For the record, at least Fedora's grep and sed both build
--without-included-regex, so would be affected.

I don't like the idea of removing the option, especially since self-consistency is guaranteed. As to flipping the default, that's fine by me (now :)), but I'd like to understand if there is a plan to add glibc extensions that allow equivalence classes to be implemented in the medium term.

Also, I would like to have glibc fix their bug with collating symbols http://sourceware.org/bugzilla/show_bug.cgi?id=11561 (with that fixed, I can add support to grep for collating symbols!)

Paolo



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