Re: emacs-29 2f94f6de9d6: Make VS-15 and VS-16 compositions work correctly

[Eli Zaretskii]

> From: Michael Albinus <michael.albinus@gmx.de>
> Cc: Robert Pluim <rpluim@gmail.com>
> Date: Fri, 02 Jun 2023 20:22:32 +0200
> 
> > commit 2f94f6de9d64f9fd89284dac171e166e7d721dcd
> > Author: Robert Pluim <rpluim@gmail.com>
> > Commit: Robert Pluim <rpluim@gmail.com>
> >
> >     Make VS-15 and VS-16 compositions work correctly
> >
> >     There is a conflict between forward matching and backward matching
> >     composition rules involving the same codepoint, which can cause the
> >     backward matching ones not to be invoked.  Ensure that VS-15 (U+FE0E)
> >     and VS-16 (U+FE0F) are composed by forward matching rules instead in
> >     order to avoid this issue.
> >
> >     * admin/unidata/emoji-zwj.awk: Add rules for CHAR+VS-15 and CHAR+VS-16.
> >     * lisp/composite.el: remove backward matching rule for VS-15.  
> > (Bug#63731)
> > ---
> >  admin/unidata/emoji-zwj.awk | 3 ++-
> >  lisp/composite.el           | 2 +-
> >  2 files changed, 3 insertions(+), 2 deletions(-)
> 
> On emba, we see (in make bootstrap)
> 
> --8<---------------cut here---------------start------------->8---
> #12 559.7   GEN      ../../lisp/international/emoji-zwj.el
> #12 559.8 mawk: program limit exceeded: sprintf buffer size=8192
> #12 559.8     FILENAME="emoji-zwj.awk" FNR=141 NR=3046
> #12 559.8 make[4]: *** [Makefile:120: ../../lisp/international/emoji-zwj.el] 
> Error 2
> --8<---------------cut here---------------end--------------->8---
> 
> See <https://emba.gnu.org/emacs/emacs/-/jobs/68356>

Maybe we should require Gawk for building Emacs.