complete

# use a custom completion command for all args named "plugin"
complete "plugin" run="mycli plugins list"

Descriptions

If you set descriptions=#true, you can provide descriptions for the completions:

complete "plugin" run="mycli plugins list" descriptions=#true

Results will be split on ":" with the first part being the completion value and the second part being the description, e.g.:

user:User's full name
port:Port number

":" can be escaped with a backslash.