If you could at least document what "/fsstnd" is (when the mandb man
page says FSSTND should use /var/catman not /fsstnd), and why /usr/man
and /usr/share/man are different and must look in different places in
the MANDB_MAP, then maybe the current behaviour wouldn't look like a bug
but a feature.
This is a bit perplexing, because the transition to /usr/share/man
completed before Ubuntu even existed; I think it even predates my taking
over maintainership of man-db 20 years ago or so. Is it really easier
to go through all of this mess with symlinks rather than just updating a
few extremely o