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HTML-escape error messages (OVE-20160505-0012)
[git.ikiwiki.info.git] / IkiWiki / Plugin / comments.pm
diff --git a/IkiWiki/Plugin/comments.pm b/IkiWiki/Plugin/comments.pm
index b45a4a97b53edc707fa20cdc477c566da382a3e4..c5177833f2430d28860e26bdeca1356c6b7a03eb 100644 (file)
--- a/IkiWiki/Plugin/comments.pm
+++ b/IkiWiki/Plugin/comments.pm
@@ -7,233 +7,313 @@ package IkiWiki::Plugin::comments;
 
 use warnings;
 use strict;
 
 use warnings;
 use strict;
-use IkiWiki 2.00;
+use IkiWiki 3.00;
 use Encode;
 
 use constant PREVIEW => "Preview";
 use constant POST_COMMENT => "Post comment";
 use constant CANCEL => "Cancel";
 
 use Encode;
 
 use constant PREVIEW => "Preview";
 use constant POST_COMMENT => "Post comment";
 use constant CANCEL => "Cancel";
 
-sub import { #{{{
+my $postcomment;
+my %commentstate;
+
+sub import {
        hook(type => "checkconfig", id => 'comments',  call => \&checkconfig);
        hook(type => "getsetup", id => 'comments',  call => \&getsetup);
        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);
        hook(type => "htmlize", id => "_comment", call => \&htmlize);
        hook(type => "sessioncgi", id => 'comment', call => \&sessioncgi);
        hook(type => "htmlize", id => "_comment", call => \&htmlize);
+       hook(type => "htmlize", id => "_comment_pending",
+               call => \&htmlize_pending);
        hook(type => "pagetemplate", id => "comments", call => \&pagetemplate);
        hook(type => "pagetemplate", id => "comments", call => \&pagetemplate);
-       hook(type => "cgi", id => "comments", call => \&linkcgi);
+       hook(type => "formbuilder_setup", id => "comments",
+               call => \&formbuilder_setup);
+       # Load goto to fix up user page links for logged-in commenters
+       IkiWiki::loadplugin("goto");
        IkiWiki::loadplugin("inline");
        IkiWiki::loadplugin("inline");
-} # }}}
-
-sub htmlize { # {{{
-       my %params = @_;
-       return $params{content};
-} # }}}
-
-sub preprocess { # {{{
-       my %params = @_;
-       my $page = $params{page};
-
-       my $format = $params{format};
-       if (defined $format && !exists $IkiWiki::hooks{htmlize}{$format}) {
-               error(sprintf(gettext("unsupported page format %s"), $format));
-       }
-
-       my $content = $params{content};
-       if (!defined $content) {
-               error(gettext("comment must have content"));
-       }
-       $content =~ s/\\"/"/g;
-
-       $content = IkiWiki::filter($page, $params{destpage}, $content);
-
-       if ($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;
-
-       IkiWiki::run_hooks(sanitize => sub {
-               $content = shift->(
-                       page => $page,
-                       destpage => $params{destpage},
-                       content => $content,
-               );
-       });
-
-       # override any metadata
-
-       if (defined $params{username}) {
-               my ($authorurl, $author) = linkuser($params{username});
-               $pagestate{$page}{meta}{author} = $author;
-               $pagestate{$page}{meta}{authorurl} = $authorurl;
-       }
-       elsif (defined $params{ip}) {
-               $pagestate{$page}{meta}{author} = sprintf(
-                       gettext("Anonymous (IP: %s)"),
-                       $params{ip});
-               delete $pagestate{$page}{meta}{authorurl};
-       }
-       else {
-               $pagestate{$page}{meta}{author} = gettext("Anonymous");
-               delete $pagestate{$page}{meta}{authorurl};
-       }
-
-       if (defined $params{subject}) {
-               $pagestate{$page}{meta}{title} = $params{subject};
-       }
-       else {
-               delete $pagestate{$page}{meta}{title};
-       }
-
-       my $baseurl = urlto($params{destpage}, undef, 1);
-       my $anchor = "";
-       my $comments_pagename = $config{comments_pagename};
-       if ($params{page} =~ m/\/(\Q${comments_pagename}\E\d+)$/) {
-               $anchor = $1;
-       }
-       $pagestate{$page}{meta}{permalink} = "${baseurl}#${anchor}";
-
-       eval q{use Date::Parse};
-       if (! $@) {
-               my $time = str2time($params{date});
-               $IkiWiki::pagectime{$page} = $time if defined $time;
-       }
-
-       # FIXME: hard-coded HTML (although it's just to set an ID)
-       return "<div id=\"$anchor\">$content</div>" if $anchor;
-       return $content;
-} # }}}
+       IkiWiki::loadplugin("transient");
+}
 
 
-sub getsetup () { #{{{
+sub getsetup () {
        return
                plugin => {
                        safe => 1,
                        rebuild => 1,
        return
                plugin => {
                        safe => 1,
                        rebuild => 1,
+                       section => "web",
                },
                },
-               # Pages where comments are shown, but new comments are not
-               # allowed, will show "Comments are closed".
-               comments_shown_pagespec => {
+               comments_pagespec => {
                        type => 'pagespec',
                        type => 'pagespec',
-                       example => 'blog/*',
-                       default => '',
-                       description => 'PageSpec for pages where comments will be shown inline',
+                       example => 'blog/* and !*/Discussion',
+                       description => 'PageSpec of pages where comments are allowed',
                        link => 'ikiwiki/PageSpec',
                        safe => 1,
                        rebuild => 1,
                },
                        link => 'ikiwiki/PageSpec',
                        safe => 1,
                        rebuild => 1,
                },
-               comments_open_pagespec => {
+               comments_closed_pagespec => {
                        type => 'pagespec',
                        type => 'pagespec',
-                       example => 'blog/* and created_after(close_old_comments)',
-                       default => '',
-                       description => 'PageSpec for pages where new comments can be posted',
+                       example => 'blog/controversial or blog/flamewar',
+                       description => 'PageSpec of pages where posting new comments is not allowed',
                        link => 'ikiwiki/PageSpec',
                        safe => 1,
                        rebuild => 1,
                },
                comments_pagename => {
                        type => 'string',
                        link => 'ikiwiki/PageSpec',
                        safe => 1,
                        rebuild => 1,
                },
                comments_pagename => {
                        type => 'string',
-                       example => 'comment_',
                        default => 'comment_',
                        description => 'Base name for comments, e.g. "comment_" for pages like "sandbox/comment_12"',
                        default => 'comment_',
                        description => 'Base name for comments, e.g. "comment_" for pages like "sandbox/comment_12"',
-                       safe => 0, # manual page moving will required
+                       safe => 0, # manual page moving required
                        rebuild => undef,
                },
                comments_allowdirectives => {
                        type => 'boolean',
                        rebuild => undef,
                },
                comments_allowdirectives => {
                        type => 'boolean',
-                       default => 0,
                        example => 0,
                        example => 0,
-                       description => 'Allow directives in newly posted comments?',
+                       description => 'Interpret directives in comments?',
+                       safe => 1,
+                       rebuild => 0,
+               },
+               comments_allowauthor => {
+                       type => 'boolean',
+                       example => 0,
+                       description => 'Allow anonymous commenters to set an author name?',
                        safe => 1,
                        rebuild => 0,
                },
                comments_commit => {
                        type => 'boolean',
                        example => 1,
                        safe => 1,
                        rebuild => 0,
                },
                comments_commit => {
                        type => 'boolean',
                        example => 1,
-                       default => 1,
                        description => 'commit comments to the VCS',
                        # old uncommitted comments are likely to cause
                        # confusion if this is changed
                        safe => 0,
                        rebuild => 0,
                },
                        description => 'commit comments to the VCS',
                        # old uncommitted comments are likely to cause
                        # confusion if this is changed
                        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};
+}
+
+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_pagename} = 'comment_'
                unless defined $config{comments_pagename};
-} #}}}
-
-# FIXME: logic taken from editpage, should be common code?
-sub getcgiuser ($) { # {{{
-       my $session = shift;
-       my $user = $session->param('name');
-       $user = $ENV{REMOTE_ADDR} unless defined $user;
-       debug("getcgiuser() -> $user");
-       return $user;
-} # }}}
-
-# This is exactly the same as recentchanges_link :-(
-sub linkcgi ($) { #{{{
-       my $cgi=shift;
-       if (defined $cgi->param('do') && $cgi->param('do') eq "commenter") {
+       $config{comments_allowformats} = ''
+               unless defined $config{comments_allowformats};
+}
+
+sub htmlize {
+       my %params = @_;
+       return $params{content};
+}
+
+sub htmlize_pending {
+       my %params = @_;
+       return sprintf(gettext("this comment needs %s"),
+               '<a href="'.
+               IkiWiki::cgiurl(do => "commentmoderation").'">'.
+               gettext("moderation").'</a>');
+}
+
+# FIXME: copied verbatim from meta
+sub safeurl ($) {
+       my $url=shift;
+       if (exists $IkiWiki::Plugin::htmlscrubber::{safe_url_regexp} &&
+           defined $IkiWiki::Plugin::htmlscrubber::safe_url_regexp) {
+               return $url=~/$IkiWiki::Plugin::htmlscrubber::safe_url_regexp/;
+       }
+       else {
+               return 1;
+       }
+}
+
+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} ||
+                               ! isallowed($format))) {
+               error(sprintf(gettext("unsupported page format %s"), $format));
+       }
 
 
-               my $page=decode_utf8($cgi->param("page"));
-               if (!defined $page) {
-                       error("missing page parameter");
+       my $content = $params{content};
+       if (! defined $content) {
+               error(gettext("comment must have content"));
+       }
+       $content =~ s/\\"/"/g;
+
+       if (defined wantarray) {
+               if ($config{comments_allowdirectives}) {
+                       $content = IkiWiki::preprocess($page, $params{destpage},
+                               $content);
                }
 
                }
 
-               IkiWiki::loadindex();
+               # no need to bother with htmlize if it's just HTML
+               $content = IkiWiki::htmlize($page, $params{destpage}, $format, $content)
+                       if defined $format;
 
 
-               my $link=bestlink("", $page);
-               if (! length $link) {
-                       print "Content-type: text/html\n\n";
-                       print IkiWiki::misctemplate(gettext(gettext("missing page")),
-                               "<p>".
-                               sprintf(gettext("The page %s does not exist."),
-                                       htmllink("", "", $page)).
-                               "</p>");
+               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
+
+       my $commentuser;
+       my $commentip;
+       my $commentauthor;
+       my $commentauthorurl;
+       my $commentopenid;
+       if (defined $params{username}) {
+               $commentuser = $params{username};
+
+               my $oiduser = eval { IkiWiki::openiduser($commentuser) };
+
+               if (defined $oiduser) {
+                       # looks like an OpenID
+                       $commentauthorurl = $commentuser;
+                       $commentauthor = (defined $params{nickname} && length $params{nickname}) ? $params{nickname} : $oiduser;
+                       $commentopenid = $commentuser;
                }
                else {
                }
                else {
-                       IkiWiki::redirect($cgi, urlto($link, undef, 1));
+                       $commentauthorurl = IkiWiki::cgiurl(
+                               do => 'goto',
+                               page => IkiWiki::userpage($commentuser)
+                       );
+
+                       $commentauthor = $commentuser;
+               }
+       }
+       else {
+               if (defined $params{ip}) {
+                       $commentip = $params{ip};
                }
                }
+               $commentauthor = gettext("Anonymous");
+       }
 
 
-               exit;
+       $commentstate{$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} = $commentauthorurl;
+       }
+
+       if ($config{comments_allowauthor}) {
+               if (defined $params{claimedauthor}) {
+                       $pagestate{$page}{meta}{author} = $params{claimedauthor};
+               }
+
+               if (defined $params{url}) {
+                       my $url=$params{url};
+
+                       eval q{use URI::Heuristic}; 
+                       if (! $@) {
+                               $url=URI::Heuristic::uf_uristr($url);
+                       }
+
+                       if (safeurl($url)) {
+                               $pagestate{$page}{meta}{authorurl} = $url;
+                       }
+               }
+       }
+       else {
+               $pagestate{$page}{meta}{author} = $commentauthor;
+               $pagestate{$page}{meta}{authorurl} = $commentauthorurl;
        }
        }
+
+       if (defined $params{subject}) {
+               # decode title the same way meta does
+               eval q{use HTML::Entities};
+               $pagestate{$page}{meta}{title} = decode_entities($params{subject});
+       }
+
+       if ($params{page} =~ m/\/\Q$config{comments_pagename}\E\d+_/) {
+               $pagestate{$page}{meta}{permalink} = urlto(IkiWiki::dirname($params{page})).
+                       "#".page_to_id($params{page});
+       }
+
+       eval q{use Date::Parse};
+       if (! $@) {
+               my $time = str2time($params{date});
+               $IkiWiki::pagectime{$page} = $time if defined $time;
+       }
+
+       return $content;
 }
 
 }
 
-# FIXME: basically the same logic as recentchanges
-# returns (author URL, pretty-printed version)
-sub linkuser ($) { # {{{
-       my $user = shift;
-       my $oiduser = eval { IkiWiki::openiduser($user) };
+sub preprocess_moderation {
+       my %params = @_;
+
+       $params{desc}=gettext("Comment Moderation")
+               unless defined $params{desc};
 
 
-       if (defined $oiduser) {
-               return ($user, $oiduser);
+       if (length $config{cgiurl}) {
+               return '<a href="'.
+                       IkiWiki::cgiurl(do => 'commentmoderation').
+                       '">'.$params{desc}.'</a>';
        }
        }
-       # FIXME: it'd be good to avoid having such a link for anonymous
-       # posts
        else {
        else {
-               return (IkiWiki::cgiurl(
-                               do => 'commenter',
-                               page => (length $config{userdir}
-                                       ? "$config{userdir}/$user"
-                                       : "$user")
-                       ), $user);
+               return $params{desc};
        }
        }
-} # }}}
+}
 
 
-# Mostly cargo-culted from IkiWiki::plugin::editpage
-sub sessioncgi ($$) { #{{{
+sub sessioncgi ($$) {
        my $cgi=shift;
        my $session=shift;
 
        my $do = $cgi->param('do');
        my $cgi=shift;
        my $session=shift;
 
        my $do = $cgi->param('do');
-       return unless $do eq 'comment';
+       if ($do eq 'comment') {
+               editcomment($cgi, $session);
+       }
+       elsif ($do eq 'commentmoderation') {
+               commentmoderation($cgi, $session);
+       }
+       elsif ($do eq 'commentsignin') {
+               IkiWiki::cgi_signin($cgi, $session);
+               exit;
+       }
+}
+
+# Mostly cargo-culted from IkiWiki::plugin::editpage
+sub editcomment ($$) {
+       my $cgi=shift;
+       my $session=shift;
 
        IkiWiki::decode_cgi_utf8($cgi);
 
 
        IkiWiki::decode_cgi_utf8($cgi);
 
@@ -242,18 +322,17 @@ sub sessioncgi ($$) { #{{{
 
        my @buttons = (POST_COMMENT, PREVIEW, CANCEL);
        my $form = CGI::FormBuilder->new(
 
        my @buttons = (POST_COMMENT, PREVIEW, CANCEL);
        my $form = CGI::FormBuilder->new(
-               fields => [qw{do sid page subject body type}],
+               fields => [qw{do sid page subject editcontent type author
+                       email url subscribe anonsubscribe}],
                charset => 'utf-8',
                method => 'POST',
                charset => 'utf-8',
                method => 'POST',
-               required => [qw{body}],
+               required => [qw{editcontent}],
                javascript => 0,
                params => $cgi,
                javascript => 0,
                params => $cgi,
-               action => $config{cgiurl},
+               action => IkiWiki::cgiurl(),
                header => 0,
                table => 0,
                header => 0,
                table => 0,
-               template => scalar IkiWiki::template_params('comments_form.tmpl'),
-               # wtf does this do in editpage?
-               wikiname => $config{wikiname},
+               template => { template('editcomment.tmpl') },
        );
 
        IkiWiki::decode_form_utf8($form);
        );
 
        IkiWiki::decode_form_utf8($form);
@@ -265,55 +344,91 @@ sub sessioncgi ($$) { #{{{
 
        my $type = $form->param('type');
        if (defined $type && length $type && $IkiWiki::hooks{htmlize}{$type}) {
 
        my $type = $form->param('type');
        if (defined $type && length $type && $IkiWiki::hooks{htmlize}{$type}) {
-               $type = possibly_foolish_untaint($type);
+               $type = IkiWiki::possibly_foolish_untaint($type);
        }
        else {
                $type = $config{default_pageext};
        }
        }
        else {
                $type = $config{default_pageext};
        }
+
+
        my @page_types;
        if (exists $IkiWiki::hooks{htmlize}) {
        my @page_types;
        if (exists $IkiWiki::hooks{htmlize}) {
-               @page_types = grep { !/^_/ } keys %{$IkiWiki::hooks{htmlize}};
+               foreach my $key (grep { !/^_/ && isallowed($_) } keys %{$IkiWiki::hooks{htmlize}}) {
+                       push @page_types, [$key, $IkiWiki::hooks{htmlize}{$key}{longname} || $key];
+               }
        }
        }
+       @page_types=sort @page_types;
 
        $form->field(name => 'do', type => 'hidden');
        $form->field(name => 'sid', type => 'hidden', value => $session->id,
                force => 1);
        $form->field(name => 'page', type => 'hidden');
        $form->field(name => 'subject', type => 'text', size => 72);
 
        $form->field(name => 'do', type => 'hidden');
        $form->field(name => 'sid', type => 'hidden', value => $session->id,
                force => 1);
        $form->field(name => 'page', type => 'hidden');
        $form->field(name => 'subject', type => 'text', size => 72);
-       $form->field(name => 'body', type => 'textarea', rows => 10);
+       $form->field(name => 'editcontent', type => 'textarea', rows => 10);
        $form->field(name => "type", value => $type, force => 1,
                type => 'select', options => \@page_types);
 
        $form->field(name => "type", value => $type, force => 1,
                type => 'select', options => \@page_types);
 
+       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 => 'commentsignin'));
+               $session->param(postsignin => $ENV{QUERY_STRING});
+               IkiWiki::cgi_savesession($session);
+       }
+
        # The untaint is OK (as in editpage) because we're about to pass
        # 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);
        $page = IkiWiki::possibly_foolish_untaint($page);
-       if (!defined $page || !length $page ||
-               IkiWiki::file_pruned($page, $config{srcdir})) {
+       if (! defined $page || ! length $page ||
+               IkiWiki::file_pruned($page)) {
                error(gettext("bad page name"));
        }
 
                error(gettext("bad page name"));
        }
 
-       my $allow_directives = $config{comments_allowdirectives};
-       my $commit_comments = $config{comments_commit};
-       my $comments_pagename = $config{comments_pagename};
-
-       # FIXME: is this right? Or should we be using the candidate subpage
-       # (whatever that might mean) as the base URL?
-       my $baseurl = urlto($page, undef, 1);
-
        $form->title(sprintf(gettext("commenting on %s"),
        $form->title(sprintf(gettext("commenting on %s"),
-                       IkiWiki::pagetitle($page)));
+                       IkiWiki::pagetitle(IkiWiki::basename($page))));
 
        $form->tmpl_param('helponformattinglink',
                htmllink($page, $page, 'ikiwiki/formatting',
                        noimageinline => 1,
                        linktext => 'FormattingHelp'),
 
        $form->tmpl_param('helponformattinglink',
                htmllink($page, $page, 'ikiwiki/formatting',
                        noimageinline => 1,
                        linktext => 'FormattingHelp'),
-                       allowdirectives => $allow_directives);
+                       allowdirectives => $config{allow_directives});
 
        if ($form->submitted eq CANCEL) {
                # bounce back to the page they wanted to comment on, and exit.
 
        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;
        }
 
                exit;
        }
 
@@ -323,58 +438,86 @@ sub sessioncgi ($$) { #{{{
                        $page));
        }
 
                        $page));
        }
 
-       if (not pagespec_match($page, $config{comments_open_pagespec},
+       # There's no UI to get here, but someone might construct the URL,
+       # leading to a comment that exists in the repository but isn't
+       # shown
+       if (!pagespec_match($page, $config{comments_pagespec},
                location => $page)) {
                error(sprintf(gettext(
                location => $page)) {
                error(sprintf(gettext(
-                       "comments on page '%s' are closed"),
+                       "comments on page '%s' are not allowed"),
                        $page));
        }
 
                        $page));
        }
 
-       IkiWiki::check_canedit($page . "[postcomment]", $cgi, $session);
-
-       my ($authorurl, $author) = linkuser(getcgiuser($session));
-
-       my $body = $form->field('body') || '';
-       $body =~ s/\r\n/\n/g;
-       $body =~ s/\r/\n/g;
-
-       # FIXME: check that the wiki is locked right now, because
-       # if it's not, there are mad race conditions!
-
-       # FIXME: rather a simplistic way to make the comments...
-       my $i = 0;
-       my $file;
-       my $location;
-       do {
-               $i++;
-               $location = "$page/${comments_pagename}${i}";
-       } while (-e "$config{srcdir}/$location._comment");
+       if (pagespec_match($page, $config{comments_closed_pagespec},
+               location => $page)) {
+               error(sprintf(gettext(
+                       "comments on page '%s' are closed"),
+                       $page));
+       }
 
 
-       my $anchor = "${comments_pagename}${i}";
+       # Set a flag to indicate that we're posting a comment,
+       # so that postcomment() can tell it should match.
+       $postcomment=1;
+       IkiWiki::check_canedit($page, $cgi, $session);
+       $postcomment=0;
 
 
-       $body =~ s/"/\\"/g;
        my $content = "[[!comment format=$type\n";
 
        my $content = "[[!comment format=$type\n";
 
-       # FIXME: handling of double quotes probably wrong?
        if (defined $session->param('name')) {
                my $username = $session->param('name');
                $username =~ s/"/&quot;/g;
                $content .= " username=\"$username\"\n";
        }
        if (defined $session->param('name')) {
                my $username = $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()) {
+               $content .= " ip=\"".$session->remote_addr()."\"\n";
+       }
+
+       if ($config{comments_allowauthor}) {
+               my $author = $form->field('author');
+               if (defined $author && length $author) {
+                       $author =~ s/"/&quot;/g;
+                       $content .= " claimedauthor=\"$author\"\n";
+               }
+               my $url = $form->field('url');
+               if (defined $url && length $url) {
+                       $url =~ s/"/&quot;/g;
+                       $content .= " url=\"$url\"\n";
                }
        }
 
                }
        }
 
+       my $avatar=getavatar($session->param('name'));
+       if (defined $avatar && length $avatar) {
+               $avatar =~ s/"/&quot;/g;
+               $content .= " avatar=\"$avatar\"\n";
+       }
+
        my $subject = $form->field('subject');
        my $subject = $form->field('subject');
-       $subject =~ s/"/&quot;/g;
+       if (defined $subject && length $subject) {
+               $subject =~ s/"/&quot;/g;
+       }
+       else {
+               $subject = "comment ".(num_comments($page, $config{srcdir}) + 1);
+       }
        $content .= " subject=\"$subject\"\n";
 
        $content .= " subject=\"$subject\"\n";
 
-       $content .= " date=\"" . IkiWiki::formattime(time, '%X %x') . "\"\n";
+       $content .= " date=\"" . strftime_utf8('%Y-%m-%dT%H:%M:%SZ', gmtime) . "\"\n";
+
+       my $editcontent = $form->field('editcontent');
+       $editcontent="" if ! defined $editcontent;
+       $editcontent =~ s/\r\n/\n/g;
+       $editcontent =~ s/\r/\n/g;
+       $editcontent =~ s/"/\\"/g;
+       $content .= " content=\"\"\"\n$editcontent\n\"\"\"]]\n";
 
 
-       $content .= " content=\"\"\"\n$body\n\"\"\"]]\n";
+       my $location=unique_comment_location($page, $content, $config{srcdir});
 
        # This is essentially a simplified version of editpage:
        # - the user does not control the page that's created, only the parent
 
        # This is essentially a simplified version of editpage:
        # - the user does not control the page that's created, only the parent
@@ -383,42 +526,74 @@ sub sessioncgi ($$) { #{{{
        # - this means that if they do, rocks fall and everyone dies
 
        if ($form->submitted eq PREVIEW) {
        # - this means that if they do, rocks fall and everyone dies
 
        if ($form->submitted eq PREVIEW) {
-               my $preview = IkiWiki::htmlize($location, $page, '_comment',
-                               IkiWiki::linkify($page, $page,
-                                       IkiWiki::preprocess($page, $page,
-                                               IkiWiki::filter($location,
-                                                       $page, $content),
-                                               0, 1)));
+               my $preview=previewcomment($content, $location, $page, time);
                IkiWiki::run_hooks(format => sub {
                IkiWiki::run_hooks(format => sub {
-                               $preview = shift->(page => $page,
-                                       content => $preview);
-                       });
-
-               my $template = template("comments_display.tmpl");
-               $template->param(content => $preview);
-               $template->param(title => $form->field('subject'));
-               $template->param(ctime => displaytime(time));
-               $template->param(author => $author);
-               $template->param(authorurl => $authorurl);
-
-               $form->tmpl_param(page_preview => $template->output);
+                       $preview = shift->(page => $page,
+                               content => $preview);
+               });
+               $form->tmpl_param(page_preview => $preview);
        }
        else {
                $form->tmpl_param(page_preview => "");
        }
 
        if ($form->submitted eq POST_COMMENT && $form->validate) {
        }
        else {
                $form->tmpl_param(page_preview => "");
        }
 
        if ($form->submitted eq POST_COMMENT && $form->validate) {
-               my $file = "$location._comment";
+               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'),
+                       $config{comments_allowauthor} ? (
+                               author => $form->field('author'),
+                               url => $form->field('url'),
+                       ) : (),
+                       page => $location,
+                       cgi => $cgi,
+                       session => $session,
+                       nonfatal => 1,
+               );
+               $postcomment=0;
+
+               if (! $ok) {
+                       $location=unique_comment_location($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.
+                       require IkiWiki::Render;
+                       IkiWiki::refresh();
+                       IkiWiki::saveindex();
 
 
-               IkiWiki::checksessionexpiry($session, $cgi->param('sid'));
+                       IkiWiki::printheader($session);
+                       print IkiWiki::cgitemplate($cgi, gettext(gettext("comment stored for moderation")),
+                               "<p>".
+                               gettext("Your comment will be posted after moderator review").
+                               "</p>");
+                       exit;
+               }
 
                # FIXME: could probably do some sort of graceful retry
                # on error? Would require significant unwinding though
 
                # FIXME: could probably do some sort of graceful retry
                # on error? Would require significant unwinding though
+               my $file = "$location._comment";
                writefile($file, $config{srcdir}, $content);
 
                my $conflict;
 
                writefile($file, $config{srcdir}, $content);
 
                my $conflict;
 
-               if ($config{rcs} and $commit_comments) {
+               if ($config{rcs} and $config{comments_commit}) {
                        my $message = gettext("Added a comment");
                        if (defined $form->field('subject') &&
                                length $form->field('subject')) {
                        my $message = gettext("Added a comment");
                        if (defined $form->field('subject') &&
                                length $form->field('subject')) {
@@ -429,8 +604,10 @@ sub sessioncgi ($$) { #{{{
 
                        IkiWiki::rcs_add($file);
                        IkiWiki::disable_commit_hook();
 
                        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();
                }
                        IkiWiki::enable_commit_hook();
                        IkiWiki::rcs_update();
                }
@@ -444,83 +621,471 @@ sub sessioncgi ($$) { #{{{
                # breaks it or something
                error($conflict) if defined $conflict;
 
                # breaks it or something
                error($conflict) if defined $conflict;
 
-               # Bounce back to where we were, but defeat broken caches
-               my $anticache = "?updated=$page/${comments_pagename}${i}";
-               IkiWiki::redirect($cgi, urlto($page, undef, 1).$anticache);
+               # Jump to the new comment on the page.
+               # The trailing question mark tries to avoid broken
+               # caches and get the most recent version of the page.
+               IkiWiki::redirect($cgi, urlto($page).
+                       "?updated#".page_to_id($location));
+
        }
        else {
        }
        else {
-               IkiWiki::showform ($form, \@buttons, $session, $cgi,
-                       forcebaseurl => $baseurl);
+               IkiWiki::showform($form, \@buttons, $session, $cgi,
+                       page => $page);
        }
 
        exit;
        }
 
        exit;
-} #}}}
+}
 
 
-sub pagetemplate (@) { #{{{
-       my %params = @_;
+sub getavatar ($) {
+       my $user=shift;
+       return undef unless defined $user;
 
 
-       my $page = $params{page};
-       my $template = $params{template};
+       my $avatar;
+       eval q{use Libravatar::URL};
+       if (! $@) {
+               my $oiduser = eval { IkiWiki::openiduser($user) };
+               my $https=defined $config{url} && $config{url}=~/^https:/;
 
 
-       if ($template->query(name => 'comments')) {
-               my $comments = undef;
+               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 $session=shift;
+
+       IkiWiki::needsignin($cgi, $session);
+       if (! IkiWiki::is_admin($session->param("name"))) {
+               error(gettext("you are not logged in as an admin"));
+       }
 
 
-               my $comments_pagename = $config{comments_pagename};
+       IkiWiki::decode_cgi_utf8($cgi);
+       
+       if (defined $cgi->param('sid')) {
+               IkiWiki::checksessionexpiry($cgi, $session);
+
+               my $rejectalldefer=$cgi->param('rejectalldefer');
+
+               my %vars=$cgi->Vars;
+               my $added=0;
+               foreach my $id (keys %vars) {
+                       if ($id =~ /(.*)\._comment(?:_pending)?$/) {
+                               $id=decode_utf8($id);
+                               my $action=$cgi->param($id);
+                               next if $action eq 'Defer' && ! $rejectalldefer;
+
+                               # Make sure that the id is of a legal
+                               # pending comment.
+                               my ($f) = $id =~ /$config{wiki_file_regexp}/;
+                               if (! defined $f || ! length $f ||
+                                   IkiWiki::file_pruned($f)) {
+                                       error("illegal file");
+                               }
+
+                               my $page=IkiWiki::dirname($f);
+                               my $filedir=$IkiWiki::Plugin::transient::transientdir;
+                               my $file="$filedir/$f";
+                               if (! -e $file) {
+                                       # old location
+                                       $file="$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') {
+                                       my $content=eval { readfile($file) };
+                                       next if $@; # file vanished since form was displayed
+                                       my $dest=unique_comment_location($page, $content, $config{srcdir})."._comment";
+                                       writefile($dest, $config{srcdir}, $content);
+                                       if ($config{rcs} and $config{comments_commit}) {
+                                               IkiWiki::rcs_add($dest);
+                                       }
+                                       $added++;
+                               }
+
+                               require IkiWiki::Render;
+                               IkiWiki::prune($file, $filedir);
+                       }
+               }
 
 
-               my $open = 0;
-               my $shown = pagespec_match($page,
-                       $config{comments_shown_pagespec},
-                       location => $page);
+               if ($added) {
+                       my $conflict;
+                       if ($config{rcs} and $config{comments_commit}) {
+                               my $message = gettext("Comment moderation");
+                               IkiWiki::disable_commit_hook();
+                               $conflict=IkiWiki::rcs_commit_staged(
+                                       message => $message,
+                                       session => $session,
+                               );
+                               IkiWiki::enable_commit_hook();
+                               IkiWiki::rcs_update();
+                       }
+               
+                       # Now we need a refresh
+                       require IkiWiki::Render;
+                       IkiWiki::refresh();
+                       IkiWiki::saveindex();
+               
+                       error($conflict) if defined $conflict;
+               }
+       }
 
 
-               if (pagespec_match($page, "*/${comments_pagename}*",
-                               location => $page)) {
-                       $shown = 0;
-                       $open = 0;
+       my @comments=map {
+               my ($id, $dir, $ctime)=@{$_};
+               my $content=readfile("$dir/$id");
+               my $preview=previewcomment($content, $id,
+                       $id, $ctime);
+               {
+                       id => $id,
+                       view => $preview,
                }
                }
+       } 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 => $out);
+       });
+       print IkiWiki::cgitemplate($cgi, gettext("comment moderation"), $out);
+       exit;
+}
+
+sub formbuilder_setup (@) {
+       my %params=@_;
 
 
-               if (length $config{cgiurl}) {
-                       $open = pagespec_match($page,
-                               $config{comments_open_pagespec},
-                               location => $page);
+       my $form=$params{form};
+       if ($form->title eq "preferences" &&
+           IkiWiki::is_admin($params{session}->param("name"))) {
+               push @{$params{buttons}}, "Comment Moderation";
+               if ($form->submitted && $form->submitted eq "Comment Moderation") {
+                       commentmoderation($params{cgi}, $params{session});
                }
                }
+       }
+}
 
 
-               if ($shown) {
-                       eval q{use IkiWiki::Plugin::inline};
-                       error($@) if $@;
+sub comments_pending () {
+       my @ret;
+
+       eval q{use File::Find};
+       error($@) 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/^\.\///;
+                               return if ! length $file || IkiWiki::file_pruned($file)
+                                       || -l $_ || -d _ || $file !~ /\Q$extension\E$/;
+                               my ($f) = $file =~ /$config{wiki_file_regexp}/; # untaint
+                               if (defined $f) {
+                                       my $ctime=(stat($_))[10];
+                                       push @ret, [$f, $dir, $ctime];
+                               }
+                       }
+               }, ".");
+
+               chdir($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/",
+               "._comment");
+
+       return @ret;
+}
 
 
-                       my @args = (
-                               pages => "internal($page/${comments_pagename}*)",
-                               template => 'comments_display',
+sub previewcomment ($$$) {
+       my $content=shift;
+       my $location=shift;
+       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, $page,
+                       IkiWiki::filter($location, $page, $content), 0, 1)));
+
+       my $template = template("comment.tmpl");
+       $template->param(content => $preview);
+       $template->param(ctime => displaytime($time, undef, 1));
+       $template->param(html5 => $config{html5});
+
+       IkiWiki::run_hooks(pagetemplate => sub {
+               shift->(page => $location,
+                       destpage => $page,
+                       template => $template);
+       });
+
+       $template->param(have_actions => 0);
+
+       $postcomment=$oldpostcomment;
+
+       return $template->output;
+}
+
+sub commentsshown ($) {
+       my $page=shift;
+
+       return pagespec_match($page, $config{comments_pagespec},
+               location => $page);
+}
+
+sub commentsopen ($) {
+       my $page = shift;
+
+       return length $config{cgiurl} > 0 &&
+              (! length $config{comments_closed_pagespec} ||
+               ! pagespec_match($page, $config{comments_closed_pagespec},
+                                location => $page));
+}
+
+sub pagetemplate (@) {
+       my %params = @_;
+
+       my $page = $params{page};
+       my $template = $params{template};
+       my $shown = ($template->query(name => 'commentslink') ||
+                    $template->query(name => 'commentsurl') ||
+                    $template->query(name => 'atomcommentsurl') ||
+                    $template->query(name => 'comments')) &&
+                   commentsshown($page);
+
+       if ($template->query(name => 'comments')) {
+               my $comments = undef;
+               if ($shown) {
+                       $comments = IkiWiki::preprocess_inline(
+                               pages => "comment($page) and !comment($page/*)",
+                               template => 'comment',
                                show => 0,
                                reverse => 'yes',
                                page => $page,
                                destpage => $params{destpage},
                                show => 0,
                                reverse => 'yes',
                                page => $page,
                                destpage => $params{destpage},
+                               feedfile => 'comments',
+                               emptyfeeds => 'no',
                        );
                        );
-                       $comments = IkiWiki::preprocess_inline(@args);
                }
 
                if (defined $comments && length $comments) {
                        $template->param(comments => $comments);
                }
 
                }
 
                if (defined $comments && length $comments) {
                        $template->param(comments => $comments);
                }
 
-               if ($open) {
-                       my $commenturl = IkiWiki::cgiurl(do => 'comment',
-                               page => $page);
-                       $template->param(commenturl => $commenturl);
+               if ($shown && commentsopen($page)) {
+                       $template->param(addcommenturl => addcommenturl($page));
+               }
+       }
+
+       if ($shown) {
+               if ($template->query(name => 'commentsurl')) {
+                       $template->param(commentsurl =>
+                               urlto($page).'#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).'comments.atom');
+               }
+
+               if ($template->query(name => 'commentslink')) {
+                       my $num=num_comments($page, $config{srcdir});
+                       my $link;
+                       if ($num > 0) {
+                               $link = htmllink($page, $params{destpage}, $page,
+                                       linktext => sprintf(ngettext("%i comment", "%i comments", $num), $num),
+                                       anchor => "comments",
+                                       noimageinline => 1
+                               );
+                       }
+                       elsif (commentsopen($page)) {
+                               $link = "<a href=\"".addcommenturl($page)."\">".
+                                       #translators: Here "Comment" is a verb;
+                                       #translators: the user clicks on it to
+                                       #translators: post a comment.
+                                       gettext("Comment").
+                                       "</a>";
+                       }
+                       $template->param(commentslink => $link)
+                               if defined $link;
                }
        }
                }
        }
-} # }}}
 
 
+       # everything below this point is only relevant to the comments
+       # themselves
+       if (!exists $commentstate{$page}) {
+               return;
+       }
+       
+       if ($template->query(name => 'commentid')) {
+               $template->param(commentid => page_to_id($page));
+       }
+
+       if ($template->query(name => 'commentuser')) {
+               $template->param(commentuser =>
+                       $commentstate{$page}{commentuser});
+       }
+
+       if ($template->query(name => 'commentopenid')) {
+               $template->param(commentopenid =>
+                       $commentstate{$page}{commentopenid});
+       }
+
+       if ($template->query(name => 'commentip')) {
+               $template->param(commentip =>
+                       $commentstate{$page}{commentip});
+       }
+
+       if ($template->query(name => 'commentauthor')) {
+               $template->param(commentauthor =>
+                       $commentstate{$page}{commentauthor});
+       }
+
+       if ($template->query(name => 'commentauthorurl')) {
+               $template->param(commentauthorurl =>
+                       $commentstate{$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}) {
+               $template->param(removeurl => IkiWiki::cgiurl(do => 'remove',
+                       page => $page));
+               $template->param(have_actions => 1);
+       }
+}
+
+sub addcommenturl ($) {
+       my $page=shift;
+
+       return IkiWiki::cgiurl(do => 'comment', page => $page);
+}
+
+sub num_comments ($$) {
+       my $page=shift;
+       my $dir=shift;
+
+       my @comments=glob("$dir/$page/$config{comments_pagename}*._comment");
+       return int @comments;
+}
+
+sub unique_comment_location ($$$$) {
+       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/$location$ext");
+
+       return $location;
+}
+
+sub page_to_id ($) {
+       # Converts a comment page name into a unique, legal html id
+       # attribute value, that can be used as an anchor to link to the
+       # comment.
+       my $page=shift;
+
+       eval q{use Digest::MD5 'md5_hex'};
+       error($@) if $@;
+
+       return "comment-".md5_hex(Encode::encode_utf8(($page)));
+}
+       
 package IkiWiki::PageSpec;
 
 sub match_postcomment ($$;@) {
        my $page = shift;
        my $glob = shift;
 
 package IkiWiki::PageSpec;
 
 sub match_postcomment ($$;@) {
        my $page = shift;
        my $glob = shift;
 
-       unless ($page =~ s/\[postcomment\]$//) {
+       if (! $postcomment) {
                return IkiWiki::FailReason->new("not posting a comment");
        }
                return IkiWiki::FailReason->new("not posting a comment");
        }
-       return match_glob($page, $glob);
+       return match_glob($page, $glob, @_);
+}
+
+sub match_comment ($$;@) {
+       my $page = shift;
+       my $glob = shift;
+
+       if (! $postcomment) {
+               # To see if it's a comment, check the source file type.
+               # Deal with comments that were just deleted.
+               my $source=exists $IkiWiki::pagesources{$page} ?
+                       $IkiWiki::pagesources{$page} :
+                       $IkiWiki::delpagesources{$page};
+               my $type=defined $source ? IkiWiki::pagetype($source) : undef;
+               if (! defined $type || $type ne "_comment") {
+                       return IkiWiki::FailReason->new("$page is not a comment");
+               }
+       }
+
+       return match_glob($page, "$glob/*", internal => 1, @_);
+}
+
+sub match_comment_pending ($$;@) {
+       my $page = shift;
+       my $glob = shift;
+       
+       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_glob($page, "$glob/*", internal => 1, @_);
 }
 
 1
 }
 
 1
Unnamed repository; edit this file 'description' to name the repository.