Eric Blake <ebl...@redhat.com> writes: >> I plan on byte-for-byte compatibility with GNU m4 1.4.19. > > I'd rather you aim for byte-for-byte compatibility with the > just-released 1.4.20 instead.
Congratulations on the new release. >> It seems to >> work that way for now, but I'd like any bug reports. I also plan to >> try it more extensively myself with autotools projects soon, but I >> figured that I'd release it as soon as possible. > > I will test to see how it fares against my m4 scripts. I suspect it > won't be long before I find an incompatibility... Nikolaos, I helped to complete a rewrite of 'gnulib-tool' in Python which was previously a ~8k line shell script. Both programs produced the same output files and stdout/stderr at the time of completion (they may have diverged a bit since then). A test suite written by Bruno Haible made this task much easier since I could diff the output and easily find what changes had to be made [1]. Maybe you can use those scripts as inspiration and form a test suite using some autoconf packages. Collin [1] https://git.savannah.gnu.org/cgit/gnulib/maint-tools.git/tree/gnulib-tool-tests
