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From: | Paul Eggert |
Subject: | Re: AS_IF |
Date: | Mon, 12 Oct 2020 00:01:31 -0700 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 |
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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