return @x;
    # same as
    return wantarray ? @x : 0+@x;

    return( ..., $y );
    # same as
    return wantarray ? ( ..., $y ) : $y;

##</code><code>##

    croak( "This only makes sense in a list context!" )
        if  ! wantarray;
    # ...
    return @list;