Re: m4_foreach_w(...AC_DEFINE...) expansion change in 2.72e?

[Zack Weinberg]

On Thu, Dec 21, 2023, at 2:20 PM, Zack Weinberg wrote:
> On Thu, Dec 21, 2023, at 1:40 PM, Karl Berry wrote:
>> 2.72e creates a different autoconf.h.in and configure in TeX Live's
>> texk/lcdf-typetools
>> (https://github.com/TeX-Live/texlive-source/tree/trunk/texk/lcdf-typetools):
> ...
>> In other words, what was four separate HAVE_AUTO_* macros have become one.
>>
>> The configure.ac code that generates this runs through those four values
>> using m4_foreach_w
>
> Oof.  I have no idea what's wrong here.  The code for m4_foreach_w has not
> changed since 2008.  What is the most recent version of Autoconf that
> generates autoconf.h.in correctly?

It would also be interesting to know if the --enable arguments are being
generated correctly from this code fragment (should be obvious from
configure --help output) because AC_FOREACH is a obsolete macro that's
*supposed* to be just another name for m4_foreach_w ... except that it
*might* be stripping a layer of quotes.

zw