Re: AS_MESSAGE_FD

[Ralf Wildenhues]

* Eric Blake wrote on Sat, Nov 22, 2008 at 08:46:43PM CET:
> According to Ralf Wildenhues on 11/22/2008 10:43 AM:
> >> -[m4_ifset([AS_MESSAGE_LOG_FD],
> >> +[m4_ifval(AS_MESSAGE_LOG_FD,
> > 
> > If these kinds of changes are required in Autoconf code, it looks like
> > user code might be affected, too.  Have you checked for third-party
> > instances of this?  Also, is this an incompatibility to earlier
> > semantics?
> 
> The semantics should be identical for third-party use;

assuming that no third-party code uses m4_ifdef([AS_MESSAGE_LOG_FD]).
Right?

FWIW, I haven't found using this, but it is a semantic change this way.

Cheers,
Ralf