Comment 8 for bug 1389682

The symptom I see on Ubuntu 18.04 is running

 $ man -H man

and getting

man: command exited with status 3: (cd /tmp/hman6RgU0i && /usr/lib/man-db/zsoelim) | (cd /tmp/hman6RgU0i && /usr/lib/man-db/manconv -f UTF-8:ISO-8859-1 -t UTF-8//IGNORE) | (cd /
tmp/hman6RgU0i && preconv -e UTF-8) | (cd /tmp/hman6RgU0i && tbl) | (cd /tmp/hman6RgU0i && groff -mandoc -Thtml)

As described by https://askubuntu.com/users/8698/dan at
manpage - How do I make man pages open in a web browser? - Ask Ubuntu
 https://askubuntu.com/questions/339255/how-do-i-make-man-pages-open-in-a-web-browser

a workaround for this bug is to install the groff command.

The man command should be fixed to discover this and print a suitable error.