Apologies for jumping in here, but my debian _testing_ systems still encounter the issue
$ umount /<tab>
awk: line 18: function gensub never defined
awk: line 18: function gensub never defined
awk: line 18: function gensub never defined
awk: line 18: function gensub never defined
with
- bash-completion 2.10-1
- mawk 1.3.4.20200120-2
- util-linux 2.34-0.1.
Whereas debian _stable_ works fine with
- bash-completion 2.8-6 (!)
- mawk 1.3.3-17+b3
- util-linux 2.33.1-0.1.
Kind regards
Carsten
