Usually, the become command has tab completion on Toolforge bastions, based on the groups of the current session:
lucaswerkmeister@tools-sgebastion-07:~$ become lexeme-forms pagepile-visual-filter speedpatrolling wb2rdf wdvd lexeme-senses quickcategories speed-patrolling wd-image-positions notwikilambda ranker translate-link wd-shex-infer
On dev-buster.toolforge.org, this completion is either not available or doesn’t work for some reason.
Looks like it’s not installed:
lucaswerkmeister@tools-sgebastion-07:~$ complete -p become complete -F _become become lucaswerkmeister@tools-sgebastion-11:~$ complete -p become complete -F _minimal become
(Edit: or maybe it is installed somewhere, but Debian Buster changed the locations that are searched for tab completion?)
On the regular bastion, that completion comes from /etc/bash_completion.d/misctools, from the misctools package:
$ (shopt -s extdebug && declare -F _become) _become 1 /etc/bash_completion.d/misctools $ dpkg -S /etc/bash_completion.d/misctools misctools: /etc/bash_completion.d/misctools
On dev-buster, misctools is installed but installs the completion into /usr/share/bash-completion/completions/misctools, which I guess isn’t loaded by default.
After typing misctools and then pressing Tab, become autocompletes correctly. If I understand correctly, completions in /usr/share/bash-completion/ are only loaded on-demand, so combining multiple completions into a single misctools file is not correct – they should be in files called become and sql, respectively, so that they’ll be autoloaded when trying to run autocompletion for those commands.
So I guess this might fall under the category of How Did It Ever Work stuff.
That might make it easy to fix.
I think the How It Ever Worked is that /etc/bash_completion.d/ isn’t loaded on-demand (which I guess is why it’s the legacy location and deprecated, because immediately loading all the completions takes a while)?
Change 703059 had a related patch set uploaded (by Majavah; author: Majavah):
[labs/toollabs@master] Link bash completion files for actual program names
Change 706663 had a related patch set uploaded (by Lucas Werkmeister; author: Lucas Werkmeister):
[labs/toollabs@master] Split misctools bash-completion into individual files
Change 703059 abandoned by Majavah:
[labs/toollabs@master] Link bash completion files for actual program names
Reason:
https://gerrit.wikimedia.org/r/c/labs/toollabs/+/706663/ is a much better solution to the same underlying problem
Change 706663 merged by jenkins-bot:
[labs/toollabs@master] Split misctools bash-completion into individual files
Mentioned in SAL (#wikimedia-cloud) [2021-09-27T13:01:42Z] <majavah> publish jobutils and misctools 0.43 T286072