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

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):

--- autoconf.h.in	(revision 69180)
+++ autoconf.h.in	(working copy)
-/* Define to run cfftot1 from otftotfm. */
-#undef HAVE_AUTO_CFFTOT1
+/* Define to run cfftot1 t1dotlessj ttftotype42 updmap from otftotfm. */
+#undef HAVE_AUTO_CFFTOT1_T1DOTLESSJ_TTFTOTYPE42_UPDMAP
-/* Define to run t1dotlessj from otftotfm. */
-#undef HAVE_AUTO_T1DOTLESSJ
-
-/* Define to run ttftotype42 from otftotfm. */
-#undef HAVE_AUTO_TTFTOTYPE42
-
-/* Define to run updmap from otftotfm. */
-#undef HAVE_AUTO_UPDMAP
-

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:

---
dnl the four values:
m4_define([kpse_otftotfm_auto_opts], [cfftot1 t1dotlessj ttftotype42 updmap])[]dnl
dnl define the enable/disable options for each:
AC_FOREACH([Kpse_Opt], kpse_otftotfm_auto_opts,
           [AC_ARG_ENABLE(Kpse_Opt,
                          AS_HELP_STRING([--disable-auto-]Kpse_Opt,
                                         [disable running ]Kpse_Opt[ from otftotfm],
                                         kpse_indent_26))])
..
dnl ac_define each of them accordingly.
m4_foreach_w([Kpse_Opt],[kpse_otftotfm_auto_opts],[AS_IF([test "x$enable_auto_]Kpse_Opt[" != xno],
                  [AC_DEFINE([HAVE_AUTO_]AS_TR_CPP(Kpse_Opt), 1,
                             [Define to run ]Kpse_Opt[ from otftotfm.])])
---

Quoting the [kpse_otftotfm_auto_opts] vs. plain kpse_otftotfm_auto_opts
makes no difference.

I guess I could unroll the loop into separate AC_DEFINE calls instead of
doing it in a loop, but is there something in there that is written
incorrectly? I'm not sure, so I thought I'd report it. Autoconf did not
report any warnings about it, as far as I could see. --thanks, karl.