Paul Eggert wrote:

>    From: Jim Meyering <[EMAIL PROTECTED]>
>    Date: 12 Aug 2000 09:47:59 +0200
>
>    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.
>
> The sed FAQ, version 014 <http://www.cornerstonemag.com/sed/sedfaq.html> says:
>
> * Ultrix 4.3 sed doesn't support \(...\)\{...\} (the idiom used here).
> * Likewise for HHsed v1.5 (by Howard Helman).
> * sedmod v1.0 (by Hern Chen) doesn't support \{...\} at all.
>
> (Granted, these are marginal targets these days.  I vaguely recall that
> someone has a bug-fix-only 4.3BSD VAX on the net somewhere in Russia,
> with guest accounts.  Would that count?  :-)
>

Why still supports ultrix-es ?



>
> Perhaps the autoconf programming-style section should mention the sed FAQ.

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