How to bash-complete output of two arbitrary commands at the same time

Question

Here goes:

function _command() {
    local cur
    COMPREPLY=()
    cur=${COMP_WORDS[COMP_CWORD]}
    if [ "$COMP_CWORD" -ge "2" ]; then
        COMPREPLY=($( compgen -W '$(pwd)' -- "$cur" ) )
    else
        COMPREPLY=($( compgen -W "arg1 arg2" -- "$cur" ) )
    fi
}
complete -F _command command

This works well, so long as I source it.

What if I want it to auto-complete both outputs of pwd and some other arbitrary command, say hostname? What if I also wanted it to auto-complete on any file path?

Answer 1

Either

COMPREPLY=($(compgen -W '$(pwd)' -- "$cur") $(compgen -W '$(hostname)' -- "$cur"))

(you want a bigger array, just make one) or

COMPREPLY=($( compgen -W '$(pwd; hostname)' -- "$cur" ) )

(still autocompleting one command).