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Re: [PATCH] Ignore boilerplate logo from MSVC on stderr.

From: Paolo Bonzini
Subject: Re: [PATCH] Ignore boilerplate logo from MSVC on stderr.
Date: Thu, 18 Nov 2010 13:00:05 +0100
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20101103 Fedora/1.0-0.33.b2pre.fc14 Lightning/1.0b3pre Mnenhy/0.8.3 Thunderbird/3.1.6

On 11/18/2010 06:47 AM, Peter Rosin wrote:
>  For example, the N command might cause 'sed' to exit in some cases.
>  Autoconf needs to be fairly conservative about unusual 'sed' commands
>  such as 'N', as 'sed' implementations are not always bug-free.
I didn't recognize that one, so I looked it up in the limitations of
sed section of the manual and it's not listed there.  Perhaps it should
be?  But while doing that, I did find

        Unicos 9 sed loops endlessly on patterns like ‘.*\n.*’.

which I somehow missed before.  Case closed, the fat lady has sung.

I don't think so. Is Unicos 9 relevant (15 year old)? Maybe this is worth detecting anyway in AC_PROG_SED?

To fix the problem that Paul mentioned, just add a "$b" command before the "N" commands.


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