Expanding the autoconf syntax a little, by handling .m4 files too, adding the
"elif" keyword, handling dnl comments better, and marking trailing whitespace.
Patch by Mike Frysinger.


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@5506 35c25a1d-7b9e-4130-9fde-d3aeb78583b8
2 files changed