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To: Paul Eggert <eggert AT twinsun DOT com>
Cc: eliz AT is DOT elta DOT co DOT il, tr AT eth DOT net, djgpp-workers AT delorie DOT com,
        autoconf AT gnu DOT org
Subject: Re: portability of sed's \{0,1\}?
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From: Jim Meyering <meyering AT ascend DOT com>
In-Reply-To: Paul Eggert's message of "Fri, 11 Aug 2000 12:56:20 -0700 (PDT)"
Date: 12 Aug 2000 09:47:59 +0200
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Reply-To: djgpp-workers AT delorie DOT com

Paul Eggert <eggert AT twinsun DOT com> writes:
|    From: Jim Meyering <meyering AT ascend DOT com>
|    Date: 11 Aug 2000 20:11:25 +0200
|
|    I saw the earlier thread (on the autoconf list) on this topic where
|    someone found that `?' and \| were not portable.  Has anyone found a
|    system on which \{m,n\} is not portable?
|
| Most likely, seds that don't support ? and \| also don't support
| \{m,n\}, as I recall that those features were introduced to USG Unix
| at about the same time.  Unix Version 7 didn't have them.

Thanks, but if no one can point to an actual system for which
sed's \{m,n\} doesn't work, I'm going to document it as portable.