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From: Tim Van Holder
Subject: Re: AC_PROG_SED
Date: Wed, 9 Jan 2002 22:00:30 +0100

> Here is the latest incarnation of AC_PROG_SED, sanitized
> for Autoconf.

Looks good ;-)

>     Now I'd like to add it's use to Libtool ASAP,
> but there is the problem of AC_PROG_SED not being
> available until this code is released, or requiring
> a CVS version of autoconf (which I'd prefer to not do).
> I was thinking that I would tack on LT_ to the macro name
> (after expanding post-2.50 Autoconf macros in it), add it to Libtool,
> and then when AC_PROG_SED is available in a released version
> of Autoconf, remove my private copy.  Does that sound sane?

I suppose so, yes.

Is there a way in autoconf 2.50 to say something like

ifdef([AC_FOO], AC_FOO,
[# else: my own version

That way, the LT_ version would simply DTRT with any version of

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