Suggestion: completion directive for commands

[WardBrian]

This would be useful in separate situations than the full reset directive, for example if a program needed to run python but wanted you to be able to specify which one with --interpreter=

Bash's compgen calls this -c. Powershell could likely use Get-Command *. I'm not as familiar with zsh, but the documentation for _command_names looks promising.

[dbuenzli]

That seems quite a specialized use. Note that it can be implemented in user space.