+Index: IkiWiki.pm
+===================================================================
+--- IkiWiki.pm (revision 2806)
++++ IkiWiki.pm (working copy)
+@@ -14,7 +14,7 @@
+ use Exporter q{import};
+ our @EXPORT = qw(hook debug error template htmlpage add_depends pagespec_match
+ bestlink htmllink readfile writefile pagetype srcfile pagename
+- displaytime will_render gettext
++ displaytime will_render gettext urlto targetpage
+ %config %links %renderedfiles %pagesources);
+ our $VERSION = 1.02; # plugin interface version, next is ikiwiki version
+ our $version='unknown'; # VERSION_AUTOREPLACE done by Makefile, DNE
+@@ -73,6 +73,7 @@
+ sslcookie => 0,
+ httpauth => 0,
+ userdir => "",
++ usedirs => 0
+ } #}}}
+
+ sub checkconfig () { #{{{
+@@ -224,10 +225,21 @@
+ return $page;
+ } #}}}
+
++sub targetpage ($$) { #{{{
++ my $page=shift;
++ my $ext=shift;
++
++ if (! $config{usedirs} || $page =~ /^index$/ ) {
++ return $page.".".$ext;
++ } else {
++ return $page."/index.".$ext;
++ }
++} #}}}
++
+ sub htmlpage ($) { #{{{
+ my $page=shift;
+-
+- return $page.".html";
++
++ return targetpage($page, "html");
+ } #}}}
+
+ sub srcfile ($) { #{{{
+@@ -393,6 +405,7 @@
+
+ return "$config{url}/" if ! defined $page;
+
++ $page=htmlpage($page);
+ $page=~s/[^\/]+$//;
+ $page=~s/[^\/]+\//..\//g;
+ return $page;
+@@ -422,6 +435,32 @@
+ $config{timeformat}, localtime($time)));
+ } #}}}
+
++sub beautify_url ($) { #{{{
++ my $url=shift;
++
++ $url =~ s!/index.html$!/!;
++ $url =~ s!^$!./!; # Browsers don't like empty links...
++
++ return $url;
++} #}}}
++
++sub urlto ($$) { #{{{
++ my $to=shift;
++ my $from=shift;
++
++ if (! length $to) {
++ return beautify_url(baseurl($from));
++ }
++
++ if (! grep { $_ eq $to } map { @{$_} } values %renderedfiles) {
++ $to=htmlpage($to);
++ }
++
++ my $link = abs2rel($to, dirname(htmlpage($from)));
++
++ return beautify_url($link);
++} #}}}
++
+ sub htmllink ($$$;@) { #{{{
+ my $lpage=shift; # the page doing the linking
+ my $page=shift; # the page that will contain the link (different for inline)
+@@ -457,7 +496,8 @@
+ "\">?</a>$linktext</span>"
+ }
+
+- $bestlink=abs2rel($bestlink, dirname($page));
++ $bestlink=abs2rel($bestlink, dirname(htmlpage($page)));
++ $bestlink=beautify_url($bestlink);
+
+ if (! $opts{noimageinline} && isinlinableimage($bestlink)) {
+ return "<img src=\"$bestlink\" alt=\"$linktext\" />";
+Index: IkiWiki/Render.pm
+===================================================================
+--- IkiWiki/Render.pm (revision 2806)
++++ IkiWiki/Render.pm (working copy)
+@@ -32,8 +32,8 @@
+ my @links;
+ return unless $backlinks{$page};
+ foreach my $p (keys %{$backlinks{$page}}) {
+- my $href=abs2rel(htmlpage($p), dirname($page));
+-
++ my $href=urlto($p, $page);
++
+ # Trim common dir prefixes from both pages.
+ my $p_trimmed=$p;
+ my $page_trimmed=$page;
+@@ -55,18 +55,14 @@
+ my @ret;
+ my $pagelink="";
+ my $path="";
+- my $skip=1;
++ my $title=$config{wikiname};
++
+ return if $page eq 'index'; # toplevel
+- foreach my $dir (reverse split("/", $page)) {
+- if (! $skip) {
+- $path.="../";
+- unshift @ret, { url => $path.htmlpage($dir), page => pagetitle($dir) };
+- }
+- else {
+- $skip=0;
+- }
++ foreach my $dir (split("/", $page)) {
++ push @ret, { url => urlto($path, $page), page => $title };
++ $path.="/".$dir;
++ $title=pagetitle($dir);
+ }
+- unshift @ret, { url => length $path ? $path : ".", page => $config{wikiname} };
+ return @ret;
+ } #}}}
+
+Index: IkiWiki/Plugin/inline.pm
+===================================================================
+--- IkiWiki/Plugin/inline.pm (revision 2806)
++++ IkiWiki/Plugin/inline.pm (working copy)
+@@ -110,8 +110,8 @@
+
+ add_depends($params{page}, $params{pages});
+
+- my $rssurl=rsspage(basename($params{page}));
+- my $atomurl=atompage(basename($params{page}));
++ my $rssurl=basename(rsspage($params{page}));
++ my $atomurl=basename(atompage($params{page}));
+ my $ret="";
+
+ if (exists $params{rootpage} && $config{cgiurl}) {
+@@ -150,10 +150,7 @@
+ # Don't use htmllink because this way the
+ # title is separate and can be overridden by
+ # other plugins.
+- my $link=bestlink($params{page}, $page);
+- $link=htmlpage($link) if defined $type;
+- $link=abs2rel($link, dirname($params{destpage}));
+- $template->param(pageurl => $link);
++ $template->param(pageurl => urlto(bestlink($params{page}, $page), $params{destpage}));
+ $template->param(title => pagetitle(basename($page)));
+ $template->param(ctime => displaytime($pagectime{$page}));
+
+@@ -205,15 +202,17 @@
+ }
+
+ if ($rss) {
+- will_render($params{page}, rsspage($params{page}));
+- writefile(rsspage($params{page}), $config{destdir},
++ my $rssp=rsspage($params{page});
++ will_render($params{page}, $rssp);
++ writefile($rssp, $config{destdir},
+ genfeed("rss", $rssurl, $desc, $params{page}, @list));
+ $toping{$params{page}}=1 unless $config{rebuild};
+ $feedlinks{$params{destpage}}=qq{<link rel="alternate" type="application/rss+xml" title="RSS" href="$rssurl" />};
+ }
+ if ($atom) {
+- will_render($params{page}, atompage($params{page}));
+- writefile(atompage($params{page}), $config{destdir},
++ my $atomp=atompage($params{page});
++ will_render($params{page}, $atomp);
++ writefile($atomp, $config{destdir},
+ genfeed("atom", $atomurl, $desc, $params{page}, @list));
+ $toping{$params{page}}=1 unless $config{rebuild};
+ $feedlinks{$params{destpage}}=qq{<link rel="alternate" type="application/atom+xml" title="Atom" href="$atomurl" />};
+@@ -288,16 +287,21 @@
+ return $content;
+ } #}}}
+
+-sub rsspage ($) { #{{{
++sub basepage ($) { #{{{
+ my $page=shift;
++
++ $page=htmlpage($page);
++ $page =~ s/\.html$//;
++
++ return $page;
++} #}}}
+
+- return $page.".rss";
++sub rsspage ($) { #{{{
++ return targetpage(shift, "rss");
+ } #}}}
+
+ sub atompage ($) { #{{{
+- my $page=shift;
+-
+- return $page.".atom";
++ return targetpage(shift, "atom");
+ } #}}}
+
+ sub genfeed ($$$$@) { #{{{
+Index: IkiWiki/Plugin/aggregate.pm
+===================================================================
+--- IkiWiki/Plugin/aggregate.pm (revision 2806)
++++ IkiWiki/Plugin/aggregate.pm (working copy)
+@@ -320,7 +320,7 @@
+ # NB: This doesn't check for path length limits.
+ eval q{use POSIX};
+ my $max=POSIX::pathconf($config{srcdir}, &POSIX::_PC_NAME_MAX);
+- if (defined $max && length(htmlpage($page)) >= $max) {
++ if (defined $max && length(htmlfn($page)) >= $max) {
+ $c="";
+ $page=$feed->{dir}."/item";
+ while (exists $IkiWiki::pagecase{lc $page.$c} ||
+@@ -356,7 +356,7 @@
+ if (ref $feed->{tags}) {
+ $template->param(tags => [map { tag => $_ }, @{$feed->{tags}}]);
+ }
+- writefile(htmlpage($guid->{page}), $config{srcdir},
++ writefile(htmlfn($guid->{page}), $config{srcdir},
+ $template->output);
+
+ # Set the mtime, this lets the build process get the right creation
+@@ -434,4 +434,8 @@
+ return "$config{srcdir}/".htmlpage($page);
+ } #}}}
+
++sub htmlfn ($) { #{{{
++ return shift().".html";
++} #}}}
++
+ 1
+Index: IkiWiki/Plugin/linkmap.pm
+===================================================================
+--- IkiWiki/Plugin/linkmap.pm (revision 2806)
++++ IkiWiki/Plugin/linkmap.pm (working copy)
+@@ -49,9 +49,7 @@
+ my %mapitems = ();
+ foreach my $item (keys %links) {
+ if (pagespec_match($item, $params{pages}, $params{page})) {
+- my $link=htmlpage($item);
+- $link=IkiWiki::abs2rel($link, IkiWiki::dirname($params{page}));
+- $mapitems{$item}=$link;
++ $mapitems{$item}=urlto($item, $params{destpage});
+ }
+ }
+
+Index: doc/usage.mdwn
+===================================================================
+--- doc/usage.mdwn (revision 2806)
++++ doc/usage.mdwn (working copy)
+@@ -244,6 +244,10 @@
+
+ Log to syslog(3).
+
++* --usedirs
++
++ Create output files named page/index.html instead of page.html.
++
+ * --w3mmode, --no-w3mmode
+
+ Enable [[w3mmode]], which allows w3m to use ikiwiki as a local CGI script,
+Index: doc/plugins/write.mdwn
+===================================================================
+--- doc/plugins/write.mdwn (revision 2806)
++++ doc/plugins/write.mdwn (working copy)
+@@ -412,6 +412,10 @@
+
+ This is the standard gettext function, although slightly optimised.
+
++#### `urlto($$)`
++
++Construct a relative url to the first parameter from the second.
++
+ ## RCS plugins
+
+ ikiwiki's support for revision control systems also uses pluggable perl
+Index: doc/ikiwiki.setup
+===================================================================
+--- doc/ikiwiki.setup (revision 2806)
++++ doc/ikiwiki.setup (working copy)
+@@ -94,6 +94,8 @@
+ syslog => 0,
+ # To link to user pages in a subdirectory of the wiki.
+ #userdir => "users",
++ # To enable alternate output filenames.
++ #usedirs => 1,
+
+ # To add plugins, list them here.
+ #add_plugins => [qw{goodstuff openid search wikitext camelcase