diff --git a/IkiWiki/Plugin/wmd.pm b/IkiWiki/Plugin/wmd.pm
new file mode 100644
index 000000000..074e1df6f
--- /dev/null
+++ b/IkiWiki/Plugin/wmd.pm
@@ -0,0 +1,45 @@
+#!/usr/bin/perl
+package IkiWiki::Plugin::wmd;
+
+use warnings;
+use strict;
+use IkiWiki 3.00;
+use POSIX;
+use Encode;
+
+sub import {
+	add_underlay("wmd");
+	hook(type => "getsetup", id => "wmd", call => \&getsetup);
+	hook(type => "formbuilder_setup", id => "wmd", call => \&formbuilder_setup);
+}
+
+sub getsetup () {
+	return
+		plugin => {
+			safe => 1,
+			rebuild => 1,
+		},
+}
+
+sub formbuilder_setup (@) {
+	my %params=@_;
+	my $form=$params{form};
+
+	return if ! defined $form->field("do");
+	
+	return unless (($form->field("do") eq "edit") ||
+				($form->field("do") eq "create"));
+
+	$form->tmpl_param("wmd_preview", "<div class=\"wmd-preview\"></div>\n".include_javascript(undef, 1));
+}
+
+sub include_javascript ($;$) {
+	my $page=shift;
+	my $absolute=shift;
+	
+	return '<script src="'.urlto("wmd.js", $page, $absolute).
+		'" type="text/javascript"></script>'."\n";
+}
+
+1
+