X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/8cd216d748961a18d373b8fea6e4346c0c372f6e..a6e69822f68864512d49a954a4581511246f0e0b:/IkiWiki/Plugin/comments.pm

diff --git a/IkiWiki/Plugin/comments.pm b/IkiWiki/Plugin/comments.pm
index 0a808aaef..0858f69f1 100644
--- a/IkiWiki/Plugin/comments.pm
+++ b/IkiWiki/Plugin/comments.pm
@@ -9,7 +9,6 @@ use warnings;
 use strict;
 use IkiWiki 3.00;
 use Encode;
-use POSIX qw(strftime);
 
 use constant PREVIEW => "Preview";
 use constant POST_COMMENT => "Post comment";
@@ -21,7 +20,9 @@ my %commentstate;
 sub import {
 	hook(type => "checkconfig", id => 'comments',  call => \&checkconfig);
 	hook(type => "getsetup", id => 'comments',  call => \&getsetup);
-	hook(type => "preprocess", id => 'comment', call => \&preprocess);
+	hook(type => "preprocess", id => 'comment', call => \&preprocess,
+		scan => 1);
+	hook(type => "preprocess", id => 'commentmoderation', call => \&preprocess_moderation);
 	# here for backwards compatability with old comments
 	hook(type => "preprocess", id => '_comment', call => \&preprocess);
 	hook(type => "sessioncgi", id => 'comment', call => \&sessioncgi);
@@ -34,6 +35,7 @@ sub import {
 	# Load goto to fix up user page links for logged-in commenters
 	IkiWiki::loadplugin("goto");
 	IkiWiki::loadplugin("inline");
+	IkiWiki::loadplugin("transient");
 }
 
 sub getsetup () {
@@ -89,17 +91,31 @@ sub getsetup () {
 			safe => 0,
 			rebuild => 0,
 		},
+		comments_allowformats => {
+			type => 'string',
+			default => '',
+			example => 'mdwn txt',
+			description => 'Restrict formats for comments to (no restriction if empty)',
+			safe => 1,
+			rebuild => 0,
+		},
+
 }
 
 sub checkconfig () {
 	$config{comments_commit} = 1
 		unless defined $config{comments_commit};
+	if (! $config{comments_commit}) {
+		$config{only_committed_changes}=0;
+	}
 	$config{comments_pagespec} = ''
 		unless defined $config{comments_pagespec};
 	$config{comments_closed_pagespec} = ''
 		unless defined $config{comments_closed_pagespec};
 	$config{comments_pagename} = 'comment_'
 		unless defined $config{comments_pagename};
+	$config{comments_allowformats} = ''
+		unless defined $config{comments_allowformats};
 }
 
 sub htmlize {
@@ -109,7 +125,7 @@ sub htmlize {
 
 sub htmlize_pending {
 	my %params = @_;
-	return sprintf(gettext("comment pending %s"),
+	return sprintf(gettext("this comment needs %s"),
 		'<a href="'.
 		IkiWiki::cgiurl(do => "commentmoderation").'">'.
 		gettext("moderation").'</a>');
@@ -127,12 +143,18 @@ sub safeurl ($) {
 	}
 }
 
+sub isallowed ($) {
+    my $format = shift;
+    return ! $config{comments_allowformats} || $config{comments_allowformats} =~ /\b$format\b/;
+}
+
 sub preprocess {
 	my %params = @_;
 	my $page = $params{page};
 
 	my $format = $params{format};
-	if (defined $format && ! exists $IkiWiki::hooks{htmlize}{$format}) {
+	if (defined $format && (! exists $IkiWiki::hooks{htmlize}{$format} ||
+				! isallowed($format))) {
 		error(sprintf(gettext("unsupported page format %s"), $format));
 	}
 
@@ -142,24 +164,27 @@ sub preprocess {
 	}
 	$content =~ s/\\"/"/g;
 
-	$content = IkiWiki::filter($page, $params{destpage}, $content);
-
-	if ($config{comments_allowdirectives}) {
-		$content = IkiWiki::preprocess($page, $params{destpage},
-			$content);
-	}
+	if (defined wantarray) {
+		if ($config{comments_allowdirectives}) {
+			$content = IkiWiki::preprocess($page, $params{destpage},
+				$content);
+		}
 
-	# no need to bother with htmlize if it's just HTML
-	$content = IkiWiki::htmlize($page, $params{destpage}, $format, $content)
-		if defined $format;
+		# no need to bother with htmlize if it's just HTML
+		$content = IkiWiki::htmlize($page, $params{destpage}, $format, $content)
+			if defined $format;
 
-	IkiWiki::run_hooks(sanitize => sub {
-		$content = shift->(
-			page => $page,
-			destpage => $params{destpage},
-			content => $content,
-		);
-	});
+		IkiWiki::run_hooks(sanitize => sub {
+			$content = shift->(
+				page => $page,
+				destpage => $params{destpage},
+				content => $content,
+			);
+		});
+	}
+	else {
+		IkiWiki::preprocess($page, $params{destpage}, $content, 1);
+	}
 
 	# set metadata, possibly overriding [[!meta]] directives from the
 	# comment itself
@@ -173,18 +198,24 @@ sub preprocess {
 		$commentuser = $params{username};
 
 		my $oiduser = eval { IkiWiki::openiduser($commentuser) };
-
 		if (defined $oiduser) {
 			# looks like an OpenID
 			$commentauthorurl = $commentuser;
-			$commentauthor = $oiduser;
+			$commentauthor = (defined $params{nickname} && length $params{nickname}) ? $params{nickname} : $oiduser;
 			$commentopenid = $commentuser;
 		}
 		else {
-			$commentauthorurl = IkiWiki::cgiurl(
-				do => 'goto',
-				page => IkiWiki::userpage($commentuser)
-			);
+			my $emailuser = IkiWiki::emailuser($commentuser);
+			if (defined $emailuser) {
+				$commentuser=$emailuser;
+			}
+
+			if (length $config{cgiurl}) {
+				$commentauthorurl = IkiWiki::cgiurl(
+					do => 'goto',
+					page => IkiWiki::userpage($commentuser)
+				);
+			}
 
 			$commentauthor = $commentuser;
 		}
@@ -196,38 +227,35 @@ sub preprocess {
 		$commentauthor = gettext("Anonymous");
 	}
 
-	$commentstate{$page}{commentuser} = $commentuser;
-	$commentstate{$page}{commentopenid} = $commentopenid;
-	$commentstate{$page}{commentip} = $commentip;
-	$commentstate{$page}{commentauthor} = $commentauthor;
-	$commentstate{$page}{commentauthorurl} = $commentauthorurl;
-	if (! defined $pagestate{$page}{meta}{author}) {
-		$pagestate{$page}{meta}{author} = $commentauthor;
-	}
-	if (! defined $pagestate{$page}{meta}{authorurl}) {
-		$pagestate{$page}{meta}{authorurl} = $commentauthorurl;
-	}
-
 	if ($config{comments_allowauthor}) {
 		if (defined $params{claimedauthor}) {
-			$pagestate{$page}{meta}{author} = $params{claimedauthor};
+			$commentauthor = $params{claimedauthor};
 		}
 
 		if (defined $params{url}) {
 			my $url=$params{url};
 
 			eval q{use URI::Heuristic}; 
-		  	if (! $@) {
+			if (! $@) {
 				$url=URI::Heuristic::uf_uristr($url);
 			}
 
 			if (safeurl($url)) {
-				$pagestate{$page}{meta}{authorurl} = $url;
+				$commentauthorurl = $url;
 			}
 		}
 	}
-	else {
+
+	$commentstate{$page}{commentuser} = $commentuser;
+	$commentstate{$page}{commentopenid} = $commentopenid;
+	$commentstate{$page}{commentip} = $commentip;
+	$commentstate{$page}{commentauthor} = $commentauthor;
+	$commentstate{$page}{commentauthorurl} = $commentauthorurl;
+	$commentstate{$page}{commentauthoravatar} = $params{avatar};
+	if (! defined $pagestate{$page}{meta}{author}) {
 		$pagestate{$page}{meta}{author} = $commentauthor;
+	}
+	if (! defined $pagestate{$page}{meta}{authorurl}) {
 		$pagestate{$page}{meta}{authorurl} = $commentauthorurl;
 	}
 
@@ -238,7 +266,7 @@ sub preprocess {
 	}
 
 	if ($params{page} =~ m/\/\Q$config{comments_pagename}\E\d+_/) {
-		$pagestate{$page}{meta}{permalink} = urlto(IkiWiki::dirname($params{page}), undef, 1).
+		$pagestate{$page}{meta}{permalink} = urlto(IkiWiki::dirname($params{page})).
 			"#".page_to_id($params{page});
 	}
 
@@ -251,6 +279,22 @@ sub preprocess {
 	return $content;
 }
 
+sub preprocess_moderation {
+	my %params = @_;
+
+	$params{desc}=gettext("Comment Moderation")
+		unless defined $params{desc};
+
+	if (length $config{cgiurl}) {
+		return '<a href="'.
+			IkiWiki::cgiurl(do => 'commentmoderation').
+			'">'.$params{desc}.'</a>';
+	}
+	else {
+		return $params{desc};
+	}
+}
+
 sub sessioncgi ($$) {
 	my $cgi=shift;
 	my $session=shift;
@@ -262,6 +306,10 @@ sub sessioncgi ($$) {
 	elsif ($do eq 'commentmoderation') {
 		commentmoderation($cgi, $session);
 	}
+	elsif ($do eq 'commentsignin') {
+		IkiWiki::cgi_signin($cgi, $session);
+		exit;
+	}
 }
 
 # Mostly cargo-culted from IkiWiki::plugin::editpage
@@ -276,13 +324,14 @@ sub editcomment ($$) {
 
 	my @buttons = (POST_COMMENT, PREVIEW, CANCEL);
 	my $form = CGI::FormBuilder->new(
-		fields => [qw{do sid page subject editcontent type author url}],
+		fields => [qw{do sid page subject editcontent type author
+			email url subscribe anonsubscribe}],
 		charset => 'utf-8',
 		method => 'POST',
 		required => [qw{editcontent}],
 		javascript => 0,
 		params => $cgi,
-		action => $config{cgiurl},
+		action => IkiWiki::cgiurl(),
 		header => 0,
 		table => 0,
 		template => { template('editcomment.tmpl') },
@@ -306,8 +355,9 @@ sub editcomment ($$) {
 
 	my @page_types;
 	if (exists $IkiWiki::hooks{htmlize}) {
-		foreach my $key (grep { !/^_/ } keys %{$IkiWiki::hooks{htmlize}}) {
-			push @page_types, [$key, $IkiWiki::hooks{htmlize}{$key}{longname} || $key];
+		foreach my $key (grep { !/^_/ && isallowed($_) } keys %{$IkiWiki::hooks{htmlize}}) {
+			push @page_types, [$key, $IkiWiki::hooks{htmlize}{$key}{longname} || $key]
+				unless $IkiWiki::hooks{htmlize}{$key}{nocreate};
 		}
 	}
 	@page_types=sort @page_types;
@@ -321,42 +371,57 @@ sub editcomment ($$) {
 	$form->field(name => "type", value => $type, force => 1,
 		type => 'select', options => \@page_types);
 
-	$form->tmpl_param(username => $session->param('name'));
+	my $username=$session->param('name');
+	$form->tmpl_param(username => $username);
+		
+	$form->field(name => "subscribe", type => 'hidden');
+	$form->field(name => "anonsubscribe", type => 'hidden');
+	if (IkiWiki::Plugin::notifyemail->can("subscribe")) {
+		if (defined $username) {
+			$form->field(name => "subscribe", type => "checkbox",
+				options => [gettext("email replies to me")]);
+		}
+		elsif (IkiWiki::Plugin::passwordauth->can("anonuser")) {
+			$form->field(name => "anonsubscribe", type => "checkbox",
+				options => [gettext("email replies to me")]);
+		}
+	}
 
 	if ($config{comments_allowauthor} and
 	    ! defined $session->param('name')) {
 		$form->tmpl_param(allowauthor => 1);
 		$form->field(name => 'author', type => 'text', size => '40');
+		$form->field(name => 'email', type => 'text', size => '40');
 		$form->field(name => 'url', type => 'text', size => '40');
 	}
 	else {
 		$form->tmpl_param(allowauthor => 0);
 		$form->field(name => 'author', type => 'hidden', value => '',
 			force => 1);
+		$form->field(name => 'email', type => 'hidden', value => '',
+			force => 1);
 		$form->field(name => 'url', type => 'hidden', value => '',
 			force => 1);
 	}
 
 	if (! defined $session->param('name')) {
 		# Make signinurl work and return here.
-		$form->tmpl_param(signinurl => IkiWiki::cgiurl(do => 'signin'));
+		$form->tmpl_param(signinurl => IkiWiki::cgiurl(do => 'commentsignin'));
 		$session->param(postsignin => $ENV{QUERY_STRING});
 		IkiWiki::cgi_savesession($session);
 	}
 
 	# The untaint is OK (as in editpage) because we're about to pass
-	# it to file_pruned anyway
-	my $page = $form->field('page');
+	# it to file_pruned and wiki_file_regexp anyway.
+	my ($page) = $form->field('page')=~/$config{wiki_file_regexp}/;
 	$page = IkiWiki::possibly_foolish_untaint($page);
 	if (! defined $page || ! length $page ||
 		IkiWiki::file_pruned($page)) {
 		error(gettext("bad page name"));
 	}
 
-	my $baseurl = urlto($page, undef, 1);
-
 	$form->title(sprintf(gettext("commenting on %s"),
-			IkiWiki::pagetitle($page)));
+			IkiWiki::pagetitle(IkiWiki::basename($page))));
 
 	$form->tmpl_param('helponformattinglink',
 		htmllink($page, $page, 'ikiwiki/formatting',
@@ -366,8 +431,7 @@ sub editcomment ($$) {
 
 	if ($form->submitted eq CANCEL) {
 		# bounce back to the page they wanted to comment on, and exit.
-		# CANCEL need not be considered in future
-		IkiWiki::redirect($cgi, urlto($page, undef, 1));
+		IkiWiki::redirect($cgi, urlto($page));
 		exit;
 	}
 
@@ -377,6 +441,16 @@ sub editcomment ($$) {
 			$page));
 	}
 
+	# There's no UI to get here, but someone might construct the URL,
+	# leading to a comment that exists in the repository but isn't
+	# shown
+	if (!pagespec_match($page, $config{comments_pagespec},
+		location => $page)) {
+		error(sprintf(gettext(
+			"comments on page '%s' are not allowed"),
+			$page));
+	}
+
 	if (pagespec_match($page, $config{comments_closed_pagespec},
 		location => $page)) {
 		error(sprintf(gettext(
@@ -392,17 +466,21 @@ sub editcomment ($$) {
 
 	my $content = "[[!comment format=$type\n";
 
-	# FIXME: handling of double quotes probably wrong?
 	if (defined $session->param('name')) {
-		my $username = $session->param('name');
+		my $username = IkiWiki::cloak($session->param('name'));
 		$username =~ s/"/&quot;/g;
 		$content .= " username=\"$username\"\n";
 	}
-	elsif (defined $ENV{REMOTE_ADDR}) {
-		my $ip = $ENV{REMOTE_ADDR};
-		if ($ip =~ m/^([.0-9]+)$/) {
-			$content .= " ip=\"$1\"\n";
-		}
+
+	if (defined $session->param('nickname')) {
+		my $nickname = $session->param('nickname');
+		$nickname =~ s/"/&quot;/g;
+		$content .= " nickname=\"$nickname\"\n";
+	}
+
+	if (!(defined $session->param('name') || defined $session->param('nickname')) &&
+		defined $session->remote_addr()) {
+		$content .= " ip=\"".IkiWiki::cloak($session->remote_addr())."\"\n";
 	}
 
 	if ($config{comments_allowauthor}) {
@@ -418,6 +496,12 @@ sub editcomment ($$) {
 		}
 	}
 
+	my $avatar=getavatar($session->param('name'));
+	if (defined $avatar && length $avatar) {
+		$avatar =~ s/"/&quot;/g;
+		$content .= " avatar=\"$avatar\"\n";
+	}
+
 	my $subject = $form->field('subject');
 	if (defined $subject && length $subject) {
 		$subject =~ s/"/&quot;/g;
@@ -426,10 +510,10 @@ sub editcomment ($$) {
 		$subject = "comment ".(num_comments($page, $config{srcdir}) + 1);
 	}
 	$content .= " subject=\"$subject\"\n";
+	$content .= " date=\"" . commentdate() . "\"\n";
 
-	$content .= " date=\"" . decode_utf8(strftime('%Y-%m-%dT%H:%M:%SZ', gmtime)) . "\"\n";
-
-	my $editcontent = $form->field('editcontent') || '';
+	my $editcontent = $form->field('editcontent');
+	$editcontent="" if ! defined $editcontent;
 	$editcontent =~ s/\r\n/\n/g;
 	$editcontent =~ s/\r/\n/g;
 	$editcontent =~ s/"/\\"/g;
@@ -457,13 +541,28 @@ sub editcomment ($$) {
 
 	if ($form->submitted eq POST_COMMENT && $form->validate) {
 		IkiWiki::checksessionexpiry($cgi, $session);
+
+		if (IkiWiki::Plugin::notifyemail->can("subscribe")) {
+			my $subspec="comment($page)";
+			if (defined $username &&
+			    length $form->field("subscribe")) {
+				IkiWiki::Plugin::notifyemail::subscribe(
+					$username, $subspec);
+			}
+			elsif (length $form->field("email") &&
+			       length $form->field("anonsubscribe")) {
+				IkiWiki::Plugin::notifyemail::anonsubscribe(
+					$form->field("email"), $subspec);
+			}
+		}
 		
 		$postcomment=1;
-		my $ok=IkiWiki::check_content(content => $form->field('editcontent'),
-			subject => $form->field('subject'),
+		my $ok=IkiWiki::check_content(
+			content => scalar $form->field('editcontent'),
+			subject => scalar $form->field('subject'),
 			$config{comments_allowauthor} ? (
-				author => $form->field('author'),
-				url => $form->field('url'),
+				author => scalar $form->field('author'),
+				url => scalar $form->field('url'),
 			) : (),
 			page => $location,
 			cgi => $cgi,
@@ -473,8 +572,8 @@ sub editcomment ($$) {
 		$postcomment=0;
 
 		if (! $ok) {
-			$location=unique_comment_location($page, $content, $config{srcdir});
-			writefile("$location._comment_pending", $config{srcdir}, $content);
+			$location=unique_comment_location($page, $content, $IkiWiki::Plugin::transient::transientdir, "._comment_pending");
+			writefile("$location._comment_pending", $IkiWiki::Plugin::transient::transientdir, $content);
 
 			# Refresh so anything that deals with pending
 			# comments can be updated.
@@ -483,7 +582,7 @@ sub editcomment ($$) {
 			IkiWiki::saveindex();
 
 			IkiWiki::printheader($session);
-			print IkiWiki::misctemplate(gettext(gettext("comment stored for moderation")),
+			print IkiWiki::cgitemplate($cgi, gettext(gettext("comment stored for moderation")),
 				"<p>".
 				gettext("Your comment will be posted after moderator review").
 				"</p>");
@@ -503,13 +602,15 @@ sub editcomment ($$) {
 				length $form->field('subject')) {
 				$message = sprintf(
 					gettext("Added a comment: %s"),
-					$form->field('subject'));
+					scalar $form->field('subject'));
 			}
 
 			IkiWiki::rcs_add($file);
 			IkiWiki::disable_commit_hook();
-			$conflict = IkiWiki::rcs_commit_staged($message,
-				$session->param('name'), $ENV{REMOTE_ADDR});
+			$conflict = IkiWiki::rcs_commit_staged(
+				message => $message,
+				session => $session,
+			);
 			IkiWiki::enable_commit_hook();
 			IkiWiki::rcs_update();
 		}
@@ -526,18 +627,48 @@ sub editcomment ($$) {
 		# Jump to the new comment on the page.
 		# The trailing question mark tries to avoid broken
 		# caches and get the most recent version of the page.
-		IkiWiki::redirect($cgi, urlto($page, undef, 1).
+		IkiWiki::redirect($cgi, urlto($page).
 			"?updated#".page_to_id($location));
 
 	}
 	else {
-		IkiWiki::showform ($form, \@buttons, $session, $cgi,
-			forcebaseurl => $baseurl);
+		IkiWiki::showform($form, \@buttons, $session, $cgi,
+			page => $page);
 	}
 
 	exit;
 }
 
+sub commentdate () {
+	strftime_utf8('%Y-%m-%dT%H:%M:%SZ', gmtime);
+}
+
+sub getavatar ($) {
+	my $user=shift;
+	return undef unless defined $user;
+
+	my $avatar;
+	eval q{use Libravatar::URL};
+	if (! $@) {
+		my $oiduser = eval { IkiWiki::openiduser($user) };
+		my $https=defined $config{url} && $config{url}=~/^https:/;
+
+		if (defined $oiduser) {
+			eval {
+				$avatar = libravatar_url(openid => $user, https => $https);
+			}
+		}
+		if (! defined $avatar &&
+		    (my $email = IkiWiki::userinfo_get($user, 'email'))) {
+			eval {
+				$avatar = libravatar_url(email => $email, https => $https);
+			}
+		}
+	}
+	return $avatar;
+}
+
+
 sub commentmoderation ($$) {
 	my $cgi=shift;
 	my $session=shift;
@@ -557,7 +688,8 @@ sub commentmoderation ($$) {
 		my %vars=$cgi->Vars;
 		my $added=0;
 		foreach my $id (keys %vars) {
-			if ($id =~ /(.*)\Q._comment(?:_pending)?\E$/) {
+			if ($id =~ /(.*)\._comment(?:_pending)?$/) {
+				$id=decode_utf8($id);
 				my $action=$cgi->param($id);
 				next if $action eq 'Defer' && ! $rejectalldefer;
 
@@ -570,10 +702,17 @@ sub commentmoderation ($$) {
 				}
 
 				my $page=IkiWiki::dirname($f);
-				my $file="$config{srcdir}/$f";
+				my $filedir=$IkiWiki::Plugin::transient::transientdir;
+				my $file="$filedir/$f";
 				if (! -e $file) {
 					# old location
-					$file="$config{wikistatedir}/comments_pending/".$f;
+					$file="$config{srcdir}/$f";
+					$filedir=$config{srcdir};
+					if (! -e $file) {
+						# older location
+						$file="$config{wikistatedir}/comments_pending/".$f;
+						$filedir="$config{wikistatedir}/comments_pending";
+					}
 				}
 
 				if ($action eq 'Accept') {
@@ -588,7 +727,7 @@ sub commentmoderation ($$) {
 				}
 
 				require IkiWiki::Render;
-				IkiWiki::prune($file);
+				IkiWiki::prune($file, $filedir);
 			}
 		}
 
@@ -597,8 +736,10 @@ sub commentmoderation ($$) {
 			if ($config{rcs} and $config{comments_commit}) {
 				my $message = gettext("Comment moderation");
 				IkiWiki::disable_commit_hook();
-				$conflict=IkiWiki::rcs_commit_staged($message,
-					$session->param('name'), $ENV{REMOTE_ADDR});
+				$conflict=IkiWiki::rcs_commit_staged(
+					message => $message,
+					session => $session,
+				);
 				IkiWiki::enable_commit_hook();
 				IkiWiki::rcs_update();
 			}
@@ -621,19 +762,20 @@ sub commentmoderation ($$) {
 			id => $id,
 			view => $preview,
 		}
-	} sort { $b->[1] <=> $a->[1] } comments_pending();
+	} sort { $b->[2] <=> $a->[2] } comments_pending();
 
 	my $template=template("commentmoderation.tmpl");
 	$template->param(
 		sid => $session->id,
 		comments => \@comments,
+		cgiurl => IkiWiki::cgiurl(),
 	);
 	IkiWiki::printheader($session);
 	my $out=$template->output;
 	IkiWiki::run_hooks(format => sub {
 		$out = shift->(page => "", content => $out);
 	});
-	print IkiWiki::misctemplate(gettext("comment moderation"), $out);
+	print IkiWiki::cgitemplate($cgi, gettext("comment moderation"), $out);
 	exit;
 }
 
@@ -655,16 +797,22 @@ sub comments_pending () {
 
 	eval q{use File::Find};
 	error($@) if $@;
+	eval q{use Cwd};
+	error($@) if $@;
+	my $origdir=getcwd();
 
 	my $find_comments=sub {
 		my $dir=shift;
 		my $extension=shift;
 		return unless -d $dir;
+
+		chdir($dir) || die "chdir $dir: $!";
+
 		find({
 			no_chdir => 1,
 			wanted => sub {
 				my $file=decode_utf8($_);
-				$file=~s/^\Q$dir\E\/?//;
+				$file=~s/^\.\///;
 				return if ! length $file || IkiWiki::file_pruned($file)
 					|| -l $_ || -d _ || $file !~ /\Q$extension\E$/;
 				my ($f) = $file =~ /$config{wiki_file_regexp}/; # untaint
@@ -673,9 +821,13 @@ sub comments_pending () {
 					push @ret, [$f, $dir, $ctime];
 				}
 			}
-		}, $dir);
+		}, ".");
+
+		chdir($origdir) || die "chdir $origdir: $!";
 	};
 	
+	$find_comments->($IkiWiki::Plugin::transient::transientdir, "._comment_pending");
+	# old location
 	$find_comments->($config{srcdir}, "._comment_pending");
 	# old location
 	$find_comments->("$config{wikistatedir}/comments_pending/",
@@ -690,6 +842,10 @@ sub previewcomment ($$$) {
 	my $page=shift;
 	my $time=shift;
 
+	# Previewing a comment should implicitly enable comment posting mode.
+	my $oldpostcomment=$postcomment;
+	$postcomment=1;
+
 	my $preview = IkiWiki::htmlize($location, $page, '_comment',
 			IkiWiki::linkify($location, $page,
 			IkiWiki::preprocess($location, $page,
@@ -708,16 +864,16 @@ sub previewcomment ($$$) {
 
 	$template->param(have_actions => 0);
 
+	$postcomment=$oldpostcomment;
+
 	return $template->output;
 }
 
 sub commentsshown ($) {
 	my $page=shift;
 
-	return ! pagespec_match($page, "comment(*)",
-	                        location => $page) &&
-	       pagespec_match($page, $config{comments_pagespec},
-	                      location => $page);
+	return pagespec_match($page, $config{comments_pagespec},
+		location => $page);
 }
 
 sub commentsopen ($) {
@@ -744,7 +900,7 @@ sub pagetemplate (@) {
 		my $comments = undef;
 		if ($shown) {
 			$comments = IkiWiki::preprocess_inline(
-				pages => "comment($page)",
+				pages => "comment($page) and !comment($page/*)",
 				template => 'comment',
 				show => 0,
 				reverse => 'yes',
@@ -765,16 +921,18 @@ sub pagetemplate (@) {
 	}
 
 	if ($shown) {
+		my $absolute = $template->param('wants_absolute_urls');
+
 		if ($template->query(name => 'commentsurl')) {
 			$template->param(commentsurl =>
-				urlto($page, undef, 1).'#comments');
+				urlto($page, undef, $absolute).'#comments');
 		}
 
 		if ($template->query(name => 'atomcommentsurl') && $config{usedirs}) {
 			# This will 404 until there are some comments, but I
 			# think that's probably OK...
 			$template->param(atomcommentsurl =>
-				urlto($page, undef, 1).'comments.atom');
+				urlto($page, undef, $absolute).'comments.atom');
 		}
 
 		if ($template->query(name => 'commentslink')) {
@@ -835,6 +993,11 @@ sub pagetemplate (@) {
 			$commentstate{$page}{commentauthorurl});
 	}
 
+	if ($template->query(name => 'commentauthoravatar')) {
+		$template->param(commentauthoravatar =>
+			$commentstate{$page}{commentauthoravatar});
+	}
+
 	if ($template->query(name => 'removeurl') &&
 	    IkiWiki::Plugin::remove->can("check_canremove") &&
 	    length $config{cgiurl}) {
@@ -855,25 +1018,23 @@ sub num_comments ($$) {
 	my $dir=shift;
 
 	my @comments=glob("$dir/$page/$config{comments_pagename}*._comment");
-	return @comments;
+	return int @comments;
 }
 
-sub unique_comment_location ($$$) {
+sub unique_comment_location ($$$;$) {
 	my $page=shift;
-
 	eval q{use Digest::MD5 'md5_hex'};
 	error($@) if $@;
 	my $content_md5=md5_hex(Encode::encode_utf8(shift));
-
 	my $dir=shift;
+	my $ext=shift || "._comment";
 
 	my $location;
 	my $i = num_comments($page, $dir);
 	do {
 		$i++;
 		$location = "$page/$config{comments_pagename}${i}_${content_md5}";
-	} while (-e "$dir/$location._comment" ||
-	         -e "$dir/$location._comment_pending");
+	} while (-e "$dir/$location$ext");
 
 	return $location;
 }
@@ -906,28 +1067,34 @@ sub match_comment ($$;@) {
 	my $page = shift;
 	my $glob = shift;
 
-	my $match=match_glob($page, "$glob/*", internal => 1, @_);
-	if ($match) {
-		my $type=IkiWiki::pagetype($IkiWiki::pagesources{$page});
-		if ($type ne "_comment") {
+	if (! $postcomment) {
+		# To see if it's a comment, check the source file type.
+		# Deal with comments that were just deleted.
+		my $source=exists $IkiWiki::pagesources{$page} ?
+			$IkiWiki::pagesources{$page} :
+			$IkiWiki::delpagesources{$page};
+		my $type=defined $source ? IkiWiki::pagetype($source) : undef;
+		if (! defined $type || $type ne "_comment") {
 			return IkiWiki::FailReason->new("$page is not a comment");
 		}
 	}
-	return $match;
+
+	return match_glob($page, "$glob/*", internal => 1, @_);
 }
 
 sub match_comment_pending ($$;@) {
 	my $page = shift;
 	my $glob = shift;
-
-	my $match=match_glob($page, "$glob/*", internal => 1, @_);
-	if ($match) {
-		my $type=IkiWiki::pagetype($IkiWiki::pagesources{$page});
-		if ($type ne "_comment_pending") {
-			return IkiWiki::FailReason->new("$page is not a pending comment");
-		}
+	
+	my $source=exists $IkiWiki::pagesources{$page} ?
+		$IkiWiki::pagesources{$page} :
+		$IkiWiki::delpagesources{$page};
+	my $type=defined $source ? IkiWiki::pagetype($source) : undef;
+	if (! defined $type || $type ne "_comment_pending") {
+		return IkiWiki::FailReason->new("$page is not a pending comment");
 	}
-	return $match;
+
+	return match_glob($page, "$glob/*", internal => 1, @_);
 }
 
 1