I finally updated my system-wide groff installation from 1.21 to
1.22.2. I notice that two man pages new in 1.22.2, those for gropdf
and pdfmom, were not installed in the upgrade.
I don't know if this omission is due to a problem in groff itself, or
in Gentoo Linux's groff package. If you have a non-Gentoo Linux box
on which you've installed groff 1.22.2 with your distro's package
manager, can you tell me whether "man gropdf" works?
(groff's top-level Makefile.in has a comment for commit
681919b36d47fa7e6f4bd821632239336f375a72 saying:
* Makefile.in: Do not forget to install gropdf manuals.
This got broken in 290eaaac6cfc33856cd683838accc72ccf3e5a84:
However, commit 290eaaac6cfc33856cd683838accc72ccf3e5a84 dates from
after the release of 1.22.2, so that commit cannot be the source of
the omission I'm seeing.)