Hi Vincent,
mhonarc 201784_mbox -rcfile common_fr.mrc -output out Can't use 'defined(%hash)' (Maybe you should just omit the defined()?) at /usr/lib/perl5/site_perl/5.22.3/mhamain.pl line 1565. Compilation failed in require at /bin/mhonarc line 39.
There is an open bug report that includes a patch for this. http://savannah.nongnu.org/bugs/?49997
I see on mailing-list archives in 2014, the debian maintainer says he's fixing a similar error without «howto fix it» Anybody could help me ?
I hope this helps! Chris