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diff --git a/dh_installdebconf b/dh_installdebconf
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+#!/usr/bin/perl -w
+
+=head1 NAME
+
+dh_installdebconf - install files used by debconf in package build directories
+
+=cut
+
+use strict;
+use Debian::Debhelper::Dh_Lib;
+
+=head1 SYNOPSIS
+
+B<dh_installdebconf> [S<I<debhelper options>>] [B<-n>] [S<B<--> I<params>>]
+
+=head1 DESCRIPTION
+
+B<dh_installdebconf> is a debhelper program that is responsible for installing
+files used by debconf into package build directories.
+
+It also automatically generates the F<postrm> commands needed to interface
+with debconf. The commands are added to the maintainer scripts by
+B<dh_installdeb>. See L<dh_installdeb(1)> for an explanation of how that
+works.
+
+Note that if you use debconf, your package probably needs to depend on it
+(it will be added to B<${misc:Depends}> by this program).
+
+Note that for your config script to be called by B<dpkg>, your F<postinst>
+needs to source debconf's confmodule. B<dh_installdebconf> does not
+install this statement into the F<postinst> automatically as it is too
+hard to do it right.
+
+=head1 FILES
+
+=over 4
+
+=item debian/I<package>.config
+
+This is the debconf F<config> script, and is installed into the F<DEBIAN>
+directory in the package build directory.
+
+Inside the script, the token B<#DEBHELPER#> is replaced with
+shell script snippets generated by other debhelper commands.
+
+=item debian/I<package>.templates
+
+This is the debconf F<templates> file, and is installed into the F<DEBIAN>
+directory in the package build directory.
+
+=item F<debian/po/>
+
+If this directory is present, this program will automatically use
+L<po2debconf(1)> to generate merged templates
+files that include the translations from there.
+
+For this to work, your package should build-depend on F<po-debconf>.
+
+=back
+
+=head1 OPTIONS
+
+=over 4
+
+=item B<-n>, B<--noscripts>
+
+Do not modify F<postrm> script.
+
+=item B<--> I<params>
+
+Pass the params to B<po2debconf>.
+
+=back
+
+=cut
+
+init();
+
+my @extraparams;
+if (defined($dh{U_PARAMS})) {
+	@extraparams=@{$dh{U_PARAMS}};
+}
+
+# PROMISE: DH NOOP WITHOUT config templates
+
+foreach my $package (@{$dh{DOPACKAGES}}) {
+	my $tmp=tmpdir($package);
+	my $config=pkgfile($package,"config");
+	my $templates=pkgfile($package,"templates");
+
+	if (! -d "$tmp/DEBIAN") {
+		doit("install","-o",0,"-g",0,"-d","$tmp/DEBIAN");
+	}
+
+	if (! is_udeb($package)) {
+		debhelper_script_subst($package, "config");
+	}
+	
+	if ($templates ne '') {
+		# Are there old-style translated templates?
+		if (glob("$templates.??"), glob("$templates.??_??")) {
+			warning "Ignoring debian/templates.ll files. Switch to po-debconf!";
+		}
+
+		umask(0022); # since I do a redirect below
+		
+		if (-d "debian/po") {
+			complex_doit("po2debconf @extraparams $templates > $tmp/DEBIAN/templates");
+		}
+		else {
+			doit("install", "-o", 0, "-g", 0, "-m", 644, "-p",
+			     $templates, "$tmp/DEBIAN/templates");
+		}
+	}
+
+	# I'm going with debconf 0.5 because it was the first
+	# "modern" one. udebs just need cdebconf.
+	my $debconfdep=is_udeb($package) ? "cdebconf-udeb" : "debconf (>= 0.5) | debconf-2.0";
+	if ($config ne '' || $templates ne '') {
+		addsubstvar($package, "misc:Depends", $debconfdep);
+	}
+	
+	if (($config ne '' || $templates ne '') && ! $dh{NOSCRIPTS}) {
+		autoscript($package,"postrm","postrm-debconf");
+	}
+}
+
+=head1 SEE ALSO
+
+L<debhelper(7)>
+
+This program is a part of debhelper.
+
+=head1 AUTHOR
+
+Joey Hess <joeyh@debian.org>
+
+=cut