in t/modules/substitute.t [107:116]
sub write_htaccess
{
my @rules = @_;
my $file = File::Spec->catfile(Apache::Test::vars('serverroot'), 'htdocs',
'modules', 'substitute', '.htaccess');
my $content = "SetOutputFilter BUCKETEER;SUBSTITUTE\n";
$content .= "Substitute $_\n" for @rules;
t_write_file($file, $content);
print "$content<===\n" if $debug;
}