* Finally apply the index.html patch, with thanks to everyone who worked

  on and supported creating it (especially Tumov). This adds a "usedirs"
  option that makes ikiwiki use foo/index.html instead of foo.html as
  output page names. It is not yet enabled by default.

14 files changed, 98 insertions, 608 deletions

diff --git a/IkiWiki.pm b/IkiWiki.pm
index 558b457f1..c272a294e 100644
--- a/IkiWiki.pm
+++ b/IkiWiki.pm
@@ -15,7 +15,7 @@ use vars qw{%config %links %oldlinks %pagemtime %pagectime %pagecase
 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="1.45";my $installdir="/usr";
@@ -72,6 +72,7 @@ sub defaultconfig () { #{{{
 	sslcookie => 0,
 	httpauth => 0,
 	userdir => "",
+	usedirs => 0,
 	numbacklinks => 10,
 } #}}}
    
@@ -224,10 +225,21 @@ sub pagename ($) { #{{{
 	return $page;
 } #}}}
 
-sub htmlpage ($) { #{{{
+sub targetpage ($$) { #{{{
 	my $page=shift;
+	my $ext=shift;
+	
+	if (! $config{usedirs} || $page =~ /^index$/ ) {
+		return $page.".".$ext;
+	} else {
+		return $page."/index.".$ext;
+	}
+} #}}}
 
-	return $page.".html";
+sub htmlpage ($) { #{{{
+	my $page=shift;
+	
+	return targetpage($page, "html");
 } #}}}
 
 sub srcfile ($) { #{{{
@@ -396,6 +408,7 @@ sub baseurl (;$) { #{{{
 
 	return "$config{url}/" if ! defined $page;
 	
+	$page=htmlpage($page);
 	$page=~s/[^\/]+$//;
 	$page=~s/[^\/]+\//..\//g;
 	return $page;
@@ -425,6 +438,32 @@ sub displaytime ($) { #{{{
 			$config{timeformat}, localtime($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)
@@ -464,7 +503,8 @@ sub htmllink ($$$;@) { #{{{
 			"\">?</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\" />";
diff --git a/IkiWiki/Plugin/aggregate.pm b/IkiWiki/Plugin/aggregate.pm
index 6e4834ce0..bb5edfa65 100644
--- a/IkiWiki/Plugin/aggregate.pm
+++ b/IkiWiki/Plugin/aggregate.pm
@@ -321,7 +321,7 @@ sub add_page (@) { #{{{
 		# 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} ||
@@ -357,7 +357,7 @@ sub add_page (@) { #{{{
 	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
@@ -435,4 +435,8 @@ sub pagefile ($) { #{{{
 	return "$config{srcdir}/".htmlpage($page);
 } #}}}
 
+sub htmlfn ($) { #{{{
+	return shift().".html";
+} #}}}
+
 1
diff --git a/IkiWiki/Plugin/inline.pm b/IkiWiki/Plugin/inline.pm
index dcaaa21eb..fc1dfdac3 100644
--- a/IkiWiki/Plugin/inline.pm
+++ b/IkiWiki/Plugin/inline.pm
@@ -124,8 +124,8 @@ sub preprocess_inline (@) { #{{{
 	# sure to be updated.
 	add_depends($params{page}, join(" or ", @list));
 
-	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 ($config{cgiurl} && (exists $params{rootpage} ||
@@ -164,13 +164,7 @@ sub preprocess_inline (@) { #{{{
 				my $content=get_inline_content($page, $params{destpage});
 				$template->param(content => $content);
 			}
-			# 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}));
 
@@ -222,15 +216,17 @@ sub preprocess_inline (@) { #{{{
 		}
 	
 		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" />};
@@ -306,15 +302,11 @@ sub absolute_urls ($$) { #{{{
 } #}}}
 
 sub rsspage ($) { #{{{
-	my $page=shift;
-
-	return $page.".rss";
+	return targetpage(shift, "rss");
 } #}}}
 
 sub atompage ($) { #{{{
-	my $page=shift;
-
-	return $page.".atom";
+	return targetpage(shift, "atom");
 } #}}}
 
 sub genfeed ($$$$@) { #{{{
diff --git a/IkiWiki/Plugin/linkmap.pm b/IkiWiki/Plugin/linkmap.pm
index 80257097a..c50559829 100644
--- a/IkiWiki/Plugin/linkmap.pm
+++ b/IkiWiki/Plugin/linkmap.pm
@@ -49,9 +49,7 @@ sub genmap ($) { #{{{
 	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});
 		}
 	}
 
diff --git a/IkiWiki/Render.pm b/IkiWiki/Render.pm
index 7fd7daf11..b65d200a0 100644
--- a/IkiWiki/Render.pm
+++ b/IkiWiki/Render.pm
@@ -31,8 +31,8 @@ sub backlinks ($) { #{{{
 
 	my @links;
 	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;
@@ -57,18 +57,14 @@ sub parentlinks ($) { #{{{
 	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;
 } #}}}
 
diff --git a/debian/changelog b/debian/changelog
index ddec8475d..84f6a2b58 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -13,8 +13,12 @@ ikiwiki (1.49) UNRELEASED; urgency=low
     self-documenting, listing the available variables.
   * Hide excess backlinks and expand using CSS trick; control quantiy via
     the numbacklinks setting.
+  * Finally apply the index.html patch, with thanks to everyone who worked
+    on and supported creating it (especially Tumov). This adds a "usedirs"
+    option that makes ikiwiki use foo/index.html instead of foo.html as
+    output page names. It is not yet enabled by default.
 
- -- Joey Hess <joeyh@debian.org>  Sat, 31 Mar 2007 04:27:08 -0400
+ -- Joey Hess <joeyh@debian.org>  Sun, 01 Apr 2007 15:37:17 -0400
 
 ikiwiki (1.48) unstable; urgency=low
 
diff --git a/doc/bugs.mdwn b/doc/bugs.mdwn
index 81586c8fe..ece00feb0 100644
--- a/doc/bugs.mdwn
+++ b/doc/bugs.mdwn
@@ -1,4 +1,4 @@
-This is ikiwiki's bug list. Link bugs to [[bugs/done]] when done..
+This is ikiwiki's bug list. Link bugs to [[bugs/done]] when done.
 
 Also see the [Debian bugs](http://bugs.debian.org/ikiwiki).
 
diff --git a/doc/bugs/broken_parentlinks.mdwn b/doc/bugs/broken_parentlinks.mdwn
index a58ff6ffe..caf1eeb0e 100644
--- a/doc/bugs/broken_parentlinks.mdwn
+++ b/doc/bugs/broken_parentlinks.mdwn
@@ -21,3 +21,9 @@ without a lot of new complex code being added.
 
 For now the best thing to do is to make sure that you always create
 example if you create example/foo. Which is probably a good idea anyway..
+
+----
+
+Note that this bug does not exist if the wiki is built with the "usedirs"
+option, since in that case, the parent link will link to a subdirectory,
+that will just be missing the index.html file, but still nicely usable.
diff --git a/doc/ikiwiki.setup b/doc/ikiwiki.setup
index af4e62314..aa3b3c0ee 100644
--- a/doc/ikiwiki.setup
+++ b/doc/ikiwiki.setup
@@ -94,6 +94,8 @@ use IkiWiki::Setup::Standard {
 	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
diff --git a/doc/patchqueue/index.html_allowed.mdwn b/doc/patchqueue/index.html_allowed.mdwn
deleted file mode 100644
index 16ff291ee..000000000
--- a/doc/patchqueue/index.html_allowed.mdwn
+++ /dev/null
@@ -1,554 +0,0 @@
-Instead of having files foo.html "in front of" foo/, I prefer to have 
-foo/index.html.
-
-I independently implemented a similar, but smaller patch.
-(It's smaller because I only care about rendering; not CGI, for example.)
-The key to this patch is that "A/B/C" is treated as equivalent
-to "A/B/C/index".
-Here it is:  --Per Bothner
-
-    --- IkiWiki/Render.pm~  2007-01-11 15:01:51.000000000 -0800
-    +++ IkiWiki/Render.pm   2007-02-02 22:24:12.000000000 -0800
-    @@ -60,9 +60,9 @@
-            foreach my $dir (reverse split("/", $page)) {
-                    if (! $skip) {
-                            $path.="../";
-    -                       unshift @ret, { url => $path.htmlpage($dir), page => pagetitle($dir) };
-    +                       unshift @ret, { url => abs2rel(htmlpage(bestlink($page, $dir)), dirname($page)), page => pagetitle($dir) };
-                    }
-    -               else {
-    +               elsif ($dir ne "index") {
-                            $skip=0;
-                    }
-            }
-
-    --- IkiWiki.pm~ 2007-01-12 12:47:09.000000000 -0800
-    +++ IkiWiki.pm  2007-02-02 18:02:16.000000000 -0800
-    @@ -315,6 +315,12 @@
-                    elsif (exists $pagecase{lc $l}) {
-                            return $pagecase{lc $l};
-                     }
-    +               else {
-    +                   my $lindex = $l . "/index";
-    +                   if (exists $links{$lindex}) {
-    +                       return $lindex;
-    +               }
-    +               }
-             } while $cwd=~s!/?[^/]+$!!;
-     
-            if (length $config{userdir} && exists $links{"$config{userdir}/".lc($link)}) {
-
-Note I handle setting the url; slightly differently.
-Also note that an initial "index" is ignored.  I.e. a
-page "A/B/index.html" is treated as "A/B".
-
-> Actually, your patch is shorter because it's more elegant and better :)
-> I'm withdrawing my old patch, because yours is much more in line with
-> ikiwiki's design and architecture.
-> I would like to make one suggestion to your patch, which is:
-
-    diff -urX ignorepats clean-ikidev/IkiWiki/Plugin/inline.pm ikidev/IkiWiki/Plugin/inline.pm
-    --- clean-ikidev/IkiWiki/Plugin/inline.pm   2007-02-25 12:26:54.099113000 -0800
-    +++ ikidev/IkiWiki/Plugin/inline.pm 2007-02-25 14:55:21.163340000 -0800
-    @@ -154,7 +154,7 @@
-                        $link=htmlpage($link) if defined $type;
-                        $link=abs2rel($link, dirname($params{destpage}));
-                        $template->param(pageurl => $link);
-    -                   $template->param(title => pagetitle(basename($page)));
-    +                   $template->param(title => titlename($page));
-                        $template->param(ctime => displaytime($pagectime{$page}));
-
-                        if ($actions) {
-    @@ -318,7 +318,7 @@
-                my $pcontent = absolute_urls(get_inline_content($p, $page), $url);
-
-                $itemtemplate->param(
-    -                   title => pagetitle(basename($p), 1),
-    +                   title => titlename($p, 1),
-                        url => $u,
-                        permalink => $u,
-                        date_822 => date_822($pagectime{$p}),
-    diff -urX ignorepats clean-ikidev/IkiWiki/Render.pm ikidev/IkiWiki/Render.pm
-    --- clean-ikidev/IkiWiki/Render.pm  2007-02-25 12:26:54.745833000 -0800
-    +++ ikidev/IkiWiki/Render.pm        2007-02-25 14:54:01.564715000 -0800
-    @@ -110,7 +110,7 @@
-        $template->param(
-                title => $page eq 'index'
-                        ? $config{wikiname}
-    -                   : pagetitle(basename($page)),
-    +                   : titlename($page),
-                wikiname => $config{wikiname},
-                parentlinks => [parentlinks($page)],
-                content => $content,
-    diff -urX ignorepats clean-ikidev/IkiWiki.pm ikidev/IkiWiki.pm
-    --- clean-ikidev/IkiWiki.pm 2007-02-25 12:26:58.812850000 -0800
-    +++ ikidev/IkiWiki.pm       2007-02-25 15:05:22.328852000 -0800
-    @@ -192,6 +192,12 @@
-        return $untainted;
-     } #}}}
-
-    +sub titlename($;@) { #{{{
-    +   my $page = shift;
-    +   $page =~ s!/index$!!;
-    +   return pagetitle(basename($page), @_);
-    +} #}}}
-    +
-     sub basename ($) { #{{{
-        my $file=shift;
-
-
-> This way foo/index gets "foo" as its title, not "index". --Ethan
-
----
-
-How about doing the index stuff only on the output side? (Or does the latter patch do it? I haven't tried them.) That is, render every `foo.type` for the rendered types (mdwn etc.) as `foo/index.html`, generating links to `foo/` instead of `foo.html`, but not earlier than the point where the .html as presently appended to the page name. Then you just flip a build time option on an existing wiki without any changes to that, and the pages appear elsewhere. The `index.type` files might be left out of this scheme, though (and the top-level one, of course, has to). --[[tuomov]]
-
-> Well, get around to wasting time on it after all, and [here's the patch](http://iki.fi/tuomov/use_dirs.diff). The `-use_dirs` option will cause everything to be rendered inside directories. There may still be some problems with it, that need looking into (it doesn't e.g. check for conflicts between foo/index.mdwn and foo.mdwn), but seems to work well enough for me... The patch also improves, I think, the parentlinks code a little, as it uses generic routines to actually find the target location now. The only places where the `use_dirs` option is used is `htmlpage`, in fact, although other specific kludges needed to be removed from other points in the code.
-
->> FWIW, [use_dirs.diff](http://iki.fi/tuomov/use_dirs.diff) applies cleanly, and works well for me. Given that it makes this behaviour optional, how about merging it? I have some follow-up patches which I'm sitting on for now. ;-) -- Ben
-
->>> How do you apply a patch created by svn diff? I've been curious about this for a long time. The use_dirs patch looks OK but I'd like to play with it. --Ethan
-
->>>> Just do `svn co svn://ikiwiki.kitenet.net/ikiwiki/trunk ikiwiki` then `cd ikiwiki && patch -p0 <use_dirs.diff`. :-) Same would work with a tarball as well.   
-
->>>>> Sorry, I'm dumb. I'm so used to doing -p1 that doing -p0 never occurred to me; I thought the patch format generated by svn diff was just "wrong". --Ethan
-
-----
-
-First pass over Tumov's patch -- which doesn't cleanly apply anymore, so
-I'll attach an updated and modified version below. --[[Joey]]
-
-* As we discussed in email, this will break handling of `foo/index.mdwn`
-  pages. Needs to be changed to generate `foo/index/index.html` for such
-  pages (though not for the toplevel `index`).
-
-  >> Can someone elaborate on this? What's broken about it? Will pages
-  >> foo/index/index.html include foo/index in their parentlinks? --Ethan
-
-  >>> Presently the patch does not move `foo/index.type` as `foo/index/index.html`, but renders
-  >>> it as `foo/index.html`, not because I particularly want that (except for the top-level one, of
-  >>> course), but because it could be done :). This, however, conflicts with a `foo.mdwn`
-  >>> rendered as `foo/index.html`. The easiest and cleanest way to fix this, is to simply
-  >>> not handle `index` in such a special manner -- except for the top-level one. --[[tuomov]]
-
-  >>>> Oh, I see, this patch doesn't address wanting to use foo/index.mdwn as 
-  >>>> an input page. Hmm. --Ethan
-
-  >>>>> No, it doesn't. I originally also was after that, but after discussing the
-  >>>>> complexities of supporting that with Joey, came up with this simpler scheme
-  >>>>> without many of those issues. It is the output that I primarily care about, anyway,
-  >>>>> and I do, in fact, find the present input file organisation quite nice. The output
-  >>>>> locations just aren't very good for conversion of an existing site to ikiwiki, and do
-  >>>>> make for rather ugly URLs with the .html extensions. (I do often type some URLs
-  >>>>> out of memory, when they're gone from the browser's completion history, and the
-  >>>>> .html makes that more laboursome.)
-
-  >>>>>> I support your decision, but now this wiki page serves two different patches :).
-  >>>>>> Can we split them somehow?
-  >>>>>> What are the complexities involved?
-  >>>>>> I think I overcomplicated it a little with my patch, and Per Bothner's gets 
-  >>>>>> much closer to the heart of it. --Ethan
-
-* This does make the resulting wikis much less browsable directly on the
-  filesystem, since `dir` to `dir/index.html` conversion is only handled by web
-  servers and so you end up browsing to a directory index all the time.
-  Wouldn't it be better to make the links themselves include the index.html?
-  (Although that would mean that [[bugs/broken_parentlinks]] would not be
-  fixed en passant by this patch..)
-
-     > Yes, the sites are not that browsable on the FS (I blame the browsers
-     > for being stupid!), but linking to the directory produces so much
-     > cleaner URLs for the Web, that I specifically want it. This is,
-     > after all, an optional arrangement. 
-
-     >> It's optional for *now* ... I suppose that I could make adding the
-     >> index.html yet another option. I'm not _that_ fond of optioons
-     >> however. --[[Joey]]
-
-     >>> It is worth noting, that with this patch, you _can_ render the local
-     >>> copy in the present manner, while rendering the Web copy under
-     >>> directories. So no extra options are really needed for local browsing, 
-     >>> unless you also want to serve the same copy over the Web, which I
-     >>> doubt. --[[tuomov]]
-
-* I suggest keeping the links using foo/index.html in the html file, but use
-  JavaScript to fix the links onload time - but only if the protocol is http or https.
-  This provides nice links without the "index.html" when served by a
-  web server, but degrades nicely when using a file: url, or when JavaScript
-  is disabled.  --Per Bothner
-
-         function fixLinks ( ) {
-           var scheme = location.protocol;
-           if (scheme!="http:" && scheme!="https:") return;
-           var links = document.getElementsByTagName("a");
-           for (var i = links.length; --i >= 0; )
-             links[i].href = links[i].href.replace(/[/]index.html/,"");
-         }
-
-* Some of the generated links are missing the trailing / , which is
-  innefficient since it leads to a http redirect when clicking on that
-  link. Seems to be limited to ".." links, and possibly only to
-  parentlinks. (Already fixed it for "." links.)
-
-      > The solution seems to be to add to `urlto` the following snippet,
-      > which might also help with the next point. (Sorry, no updated patch
-      > yet. Should be on my way out in the cold anyway...)
-
-        if ( !length $to ) {
-                return baseurl($from);
-        }
- 
-      >> Indeed, this brings the number of abs2rels closer to par, as well
-      >> as fixing the .. links. --[[Joey]]
-
-* It calles abs2rel about 16% more often with the patch, which makes it
-  a bit slower, since abs2rel is not very efficient. (This omits abs2rel
-  calls that might be memoized away already.) This seems to be due to one
-  extra abs2rel for the toplevel wiki page due to the nicely cleaned up code
-  in `parentlinks` -- so I'm not really complaining.. Especially since the
-  patch adds a new nice memoizable `urlto`.
-* The rss page name generation code seems unnecesarily roundabout, I'm sure
-  that can be cleaned up somehow, perhaps by making `htmlpage` more
-  generic.
-
-     > Something like `targetpage(basename, extension)`?
-
-     >> Yes exactly. It might also be possible to remove htmlpage from the
-     >> plugin interface entirely (in favour of urlto), which would be a
-     >> good time to make such a changes. Not required to accept this patch
-     >> though.
-
-     >>> [...] in fact, all uses of htmlpage in the plugins are used to
-     >>> construct an absolute address: the absolute url in most cases, so an `absurl`
-     >>> call could be added to be used instead of htmlpage
-     >>> --[[tuomov]]
-
-     >>>> Or it could use urlto("index", $page) instead. --[[Joey]]
-
-     >>>>> That is, however, a relative URL, and maybe an absolute one
-     >>>>> is wanted. Perhaps `urlto($targetpage)` should return the
-     >>>>> absolute version --[[tuomov]]
-
-* > and something else in the
-  > aggregate plugin (above), that I also think isn't what's wanted:
-  > aren't `foo.html` pages also "rendered", so that they get moved as `foo/index.html`?
-  > --[[tuomov]]
-
-  >> Yes, the aggregate plugin will save the files as foo.html in the
-  >> sourcedir, and that will result in foo/index.html in the web site, same
-  >> as any other page. --[[Joey]]
-
-* `img.pm` makes some assumptions about name of the page that will be
-  linking to the image, which are probably broken.
-
-* The changes to htmlpage's behavior probably call for the plugin
-  interface version number to be changed.
-
-Latest version of my patch... with most of the stuff that's been discussed, including `targetpage`.
-Also available [here](http://iki.fi/tuomov/use_dirs-20070221.diff). (BTW, this posting, applying, and
-updating of plain-old-diffs containing all the previous changes is starting to be painful. Reminds
-me why I use darcs..) --[[tuomov]]
-
-<pre>
-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
-</pre>
diff --git a/doc/patchqueue/index.html_allowed/discussion.mdwn b/doc/patchqueue/index.html_allowed/discussion.mdwn
deleted file mode 100644
index 49a0dfb08..000000000
--- a/doc/patchqueue/index.html_allowed/discussion.mdwn
+++ /dev/null
@@ -1,12 +0,0 @@
-Any chance of this, or something like this, making it into the trunk?
-
-I realized that when writing Perl modules, having a Foo.pm, and then Foo/Bar.pm is the norm, 
-so maybe that's why Ikiwiki does things this way. But I still think it's "more natural" 
-in a web environment. (And Python, which is where I do my hacking, imports Foo/__init__.py
-if you import Foo.)
-
-Ethan
-
-+1 for this patch making it into trunk. --James
-
-While we're still testing this patch, what about creating a branch in the Ikiwiki SVN and applying the current patch? That'll make it easier to submit further patches that rely on the original. It will also allow us to experient without breaking the trunk. -- [[Ben]]
\ No newline at end of file
diff --git a/doc/plugins/write.mdwn b/doc/plugins/write.mdwn
index be5f86924..71239ac82 100644
--- a/doc/plugins/write.mdwn
+++ b/doc/plugins/write.mdwn
@@ -414,6 +414,15 @@ Given a time, formats it for display.
 
 This is the standard gettext function, although slightly optimised.
 
+#### `urlto($$)`
+
+Construct a relative url to the first parameter from the second.
+
+#### `targetpage($$)`
+
+Passed a page and an extension, returns the filename that page will be
+rendered to.
+
 ## RCS plugins
 
 ikiwiki's support for revision control systems also uses pluggable perl
diff --git a/doc/usage.mdwn b/doc/usage.mdwn
index 4ccd6bf44..f80b02ff1 100644
--- a/doc/usage.mdwn
+++ b/doc/usage.mdwn
@@ -257,6 +257,10 @@ configuration options of their own.
 
   Log to syslog(3).
 
+* --usedirs, --no-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,
diff --git a/ikiwiki.in b/ikiwiki.in
index b8589bc62..b8acd61ea 100755
--- a/ikiwiki.in
+++ b/ikiwiki.in
@@ -28,6 +28,7 @@ sub getconfig () { #{{{
 			"post-commit" => \$config{post_commit},
 			"render=s" => \$config{render},
 			"wrappers!" => \$config{wrappers},
+			"usedirs!" => \$config{usedirs},
 			"getctime" => \$config{getctime},
 			"wrappermode=i" => \$config{wrappermode},
 			"numbacklinks=i" => \$config{numbacklinks},