bug#64235: patch: Ensure that makeinfo ≥ 6.8 checks the @menu structure

[arnold]

Thanks also from me, I have made a similar change for gawk.

Arnold

Jim Meyering <jim@meyering.net> wrote:

> On Thu, Jun 22, 2023 at 4:28 PM Bruno Haible <bruno@clisp.org> wrote:
> > Makeinfo versions < 6.7 detected mistakes in the @menu structure of TeXinfo
> > input. Makeinfo versions ≥ 6.8 don't do this any more by default. They need
> > an extra option, for this validation to happen. See
> > <https://lists.gnu.org/archive/html/bug-texinfo/2023-06/msg00015.html>.
> >
> > Since doc/grep.texi has a hand-written @menu, it should use this extra
> > option.
> >
> > Here's a patch to that effect.
> >
> > There are two possibilities for adding the extra option:
> >   - in the MAKEINFO variable, where it has an effect on both "makeinfo"
> >     and "makeinfo --html",
> >   - in the AM_MAKEINFOFLAGS variable, where it has an effect on "makeinfo"
> >     only.
> > Since some maintainers may check their documentation edits only by 
> > regenerating
> > the HTML-formatted documentation, the first choice is preferrable.
> >
> > Tested by running
> >   touch doc/grep.texi ; (cd doc && make grep.info V=1)
> > and
> >   make sc_makefile_at_at_check
>
> Thank you. Pushed.
>
>
>