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}

sub autoload {
	my $self = shift;
	my $who  = $self->_caller;
	my $cwd  = Cwd::getcwd();
	my $sym  = "${who}::AUTOLOAD";
	$sym->{$cwd} = sub {
		my $pwd = Cwd::getcwd();
		if ( my $code = $sym->{$pwd} ) {
			# Delegate back to parent dirs
			goto &$code unless $cwd eq $pwd;
		}
		unless ($$sym =~ s/([^:]+)$//) {
			# XXX: it looks like we can't retrieve the missing function
			# via $$sym (usually $main::AUTOLOAD) in this case.
			# I'm still wondering if we should slurp Makefile.PL to
			# get some context or not ...
			my ($package, $file, $line) = caller;
			die <<"EOT";
Unknown function is found at $file line $line.