I think both the patches in this discussion (special { 0 } handling and the new warning option) generally look good. I don't see you in the FSF copyright assignment list; could you complete https://git.savannah.gnu.org/cgit/gnulib.git/plain/doc/Copyright/request-assign.future (unless you're already covered by an employer assignment)?
-- Joseph S. Myers jos...@codesourcery.com