Re: Please help wordsmith NEWS entry warning about AC_REQUIRE inside shell conditional

[Paul Eggert]

The wording all looks clear, except:

On 7/12/20 8:37 AM, Zack Weinberg wrote:
>       The only macros that are guaranteed *not* to
>       use AC_REQUIRE are the macros for acting on the results of a
>       test: AC_DEFINE, AC_SUBST, AC_MSG_*, AC_CACHE_CHECK, etc.

This sentence is too broad. It applies only to AC_* macros, and not to AS_IF 
etc. So I suggest changing "The only macros" to "The only AC_* macros".

Also, it's not clear to me which AC_* macros are safe from this brief 
description. For example, surely AC_CHECK_HEADERS is safe, but it both does a 
test and acts on the results of a test so is it OK? So more guidance is needed here.

Perhaps the documentation should list the safe macros, though of course this 
would be more work.