Dear Gnulib developers,
Gnuastro uses Argp for its argument parsing and the experience has been
very good! So first of all, I wanted to thank you very much for all the
wonderful work :-).
This email is about using '-inf' as an argument (negative infinity), not
a short option '-i' in Argp. It happened to one of Gnuastro's users and
the only solution that occurred to me was to set it to the vertical TAB
(ASCII code 11) so Argp parses it as an argument, then convert it back
afterward Argp (see [1]).
But this is not the most elegant solution to this problem, so along with
Antonio (in Cc), we became curious and wanted to share the situation
with you to see what you would have done in this case (or if there is
actually a solution in Argp that I had missed until now).
Thanks a lot,
Mohammad
[1] https://savannah.gnu.org/bugs/?67191