Re: AS_IF

[Paul Eggert]

On 10/6/20 5:52 PM, Zack Weinberg wrote:

> I agree that this should be clarified; I just had the same
> conversation in another thread. I'm not sure we should say AS_IF/CASE
> are equivalent to plain shell if/case inside an AC_DEFUN; they do do
> more than just make the m4 expansion stack not be empty.

Yes, that goes a bit too far. I installed the attached doc patch to Savannah 
Autoconf master to try to clarify things a bit. I developed this patch before 
seeing Bruno's, but it should address the same issues (plus a few more, like 
portability of Posix case syntax).

> Also, why is AS_FOR not documented? Maybe, instead of avoiding
> mentioning it in NEWS, it should be documented?

AS_FOR is kind of a mess. I wouldn't document it the way it is. Perhaps it could 
be cleaned up in some future Autoconf version.

0001-doc-improve-AS_CASE-AS_IF-doc.patch
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