fast vagrant ssh

vagrant.fish

function vagrant
    set config ".vagrant/ssh_config"
    set cmd (which vagrant)
    if [ $argv[1] = 'ssh' ]
        pushd . > /dev/null
        while not test -e Vagrantfile; and [ $PWD != '/' ]
            cd ..
        end
        
        if [ $PWD = '/' ]
            echo 'Not found Vagrantfile'
        else
            # make ssh_config
            if not test -e $config
                $cmd ssh-config > $config
            end

            # ssh vagrant
            if test (count $argv) -gt 1
                /usr/bin/ssh -F $config $argv[2..-1]
            else
                /usr/bin/ssh -F $config default
            end
        end
        popd > /dev/null
    else
        $cmd $argv[1..-1]
    end
end