package Unimport;
use warnings;
use strict;
sub foo { 23 }
use namespace::clean;
sub bar { foo() }
no namespace::clean;
sub baz { bar() }
use namespace::clean;
sub qux { baz() }
1;
package Unimport;
use warnings;
use strict;
sub foo { 23 }
use namespace::clean;
sub bar { foo() }
no namespace::clean;
sub baz { bar() }
use namespace::clean;
sub qux { baz() }
1;