4 files changed, 61 insertions, 19 deletions
diff --git a/doc/plugins.mdwn b/doc/plugins.mdwn
index 8981ecd5a..57ec8afb9 100644
--- a/doc/plugins.mdwn
+++ b/doc/plugins.mdwn
@@ -1,7 +1,8 @@
 There's documentation if you want to [[write]] your own plugins, or you can install and use plugins contributed by others. 
 
 The ikiwiki package includes some standard plugins that are installed and
-by default. These include [[inline]], [[pagecount]], and [[brokenlinks]], and [[search]]. Of these, [[inline]] is enabled by default.
+by default. These include [[inline]], [[pagecount]], [[brokenlinks]],
+[[smiley]], and [[search]]. Of these, [[inline]] is enabled by default.
 
 To enable other plugins, use the `--plugin` switch described in [[usage]],
 or the equivalent line in [[ikiwiki.setup]].
diff --git a/doc/plugins/smiley.mdwn b/doc/plugins/smiley.mdwn
new file mode 100644
index 000000000..f9e4800a4
--- /dev/null
+++ b/doc/plugins/smiley.mdwn
@@ -0,0 +1,6 @@
+This plugin makes it easy to insert smileys and other special symbols into
+pages in the wiki. The symbols are all listed on the [[smileys]] page,
+which serves as both configuration for the plugin and a list of available
+smileys.
+
+This plugin is included in ikiwiki, but is not enabled by default. :-)
diff --git a/doc/plugins/write.mdwn b/doc/plugins/write.mdwn
index a4e800c58..d881554ca 100644
--- a/doc/plugins/write.mdwn
+++ b/doc/plugins/write.mdwn
@@ -17,8 +17,14 @@ being edited.
 
 ## Registering plugins
 
-Plugins should, when imported, call IkiWiki::hook to hook into
-ikiwiki's processing. The function uses named parameters, and use varies depending on the type of plugin being registered. Note that a plugin can call the function more than once to register multiple hooks. All calls to IkiWiki::hook should be passed a "type" parameter, which gives the type of hook, a "id" paramter, which should be a unique string for this plugin, and a "call" parameter, which is a reference to a function to call for the hook.
+Plugins should, when imported, call IkiWiki::hook to hook into ikiwiki's
+processing. The function uses named parameters, and use varies depending on
+the type of plugin being registered. Note that a plugin can call the
+function more than once to register multiple hooks. All calls to
+IkiWiki::hook should be passed a "type" parameter, which gives the type of
+hook, a "id" paramter, which should be a unique string for this plugin, and
+a "call" parameter, which is a reference to a function to call for the
+hook.
 
 ## Writing a [[PreProcessorDirective]]
 
@@ -26,7 +32,8 @@ This is probably the most common use of a plugin.
 
         IkiWiki::hook(type => "preprocess", id => "foo", call => \&preprocess);
 
-Replace "foo" with the command name that will be used inside brackers for the preprocessor directive.
+Replace "foo" with the command name that will be used inside brackers for
+the preprocessor directive.
 
 Each time the directive is processed, the referenced function (`preprocess` in the example above) is called, and is passed named parameters. A
 "page" parameter gives the name of the page that embedded the preprocessor directive. All parameters included in the directive are included
@@ -49,37 +56,54 @@ preprocessor time. Text output by a preprocessor directive will be passed throug
 
 ## Other types of hooks
 
-Beyond PreProcessorDirectives, Other types of hooks that can be used by plugins include:
+Beyond PreProcessorDirectives, Other types of hooks that can be used by
+plugins include:
 
 ### checkconfig
 
-        IkiWiki::hook(type => "checkconfig", id => "foo", call => \&checkconfig);
+	IkiWiki::hook(type => "checkconfig", id => "foo", call => \&checkconfig);
 
-This is useful if the plugin needs to check for, or modify ikiwiki's configuration. It's called early in the ikiwiki startup process. The function is passed no values. It's ok for the function to call IkiWiki::error if something isn't configured right.
+This is useful if the plugin needs to check for, or modify ikiwiki's
+configuration. It's called early in the ikiwiki startup process. The
+function is passed no values. It's ok for the function to call
+IkiWiki::error if something isn't configured right.
+
+### filter
+
+	IkiWiki::hook(type => "filter", id => "foo", call => \&filter);
+
+Runs on the raw source of a page, before anything else touches it, and can
+make arbitrary changes. The function is passed named parameters `page` and
+`content` should return the filtered content.
 
 ### delete
 
-        IkiWiki::hook(type => "delete", id => "foo", call => \&dele);
+	IkiWiki::hook(type => "delete", id => "foo", call => \&dele);
 
-Each time a page or pages is removed from the wiki, the referenced function is called, and passed the names of the source files that were removed.
+Each time a page or pages is removed from the wiki, the referenced function
+is called, and passed the names of the source files that were removed.
 
 ### render
 
-        IkiWiki::hook(type => "render", id => "foo", call => \&render);
+	IkiWiki::hook(type => "render", id => "foo", call => \&render);
 
-Each time ikiwiki renders a change or addition (but not deletion) of a page to the wiki, the referenced function is called, and passed the name of the source file that was rendered.
+Each time ikiwiki renders a change or addition (but not deletion) of a page
+to the wiki, the referenced function is called, and passed the name of the
+source file that was rendered.
 
 ### cgi
 
-        IkiWiki::hook(type => "cgi", id => "foo", call => \&cgi);
+	IkiWiki::hook(type => "cgi", id => "foo", call => \&cgi);
 
-Use this to hook into ikiwiki's cgi script. Each registered cgi hook is called
-in turn, and passed a CGI object. The hook should examine the parameters, and if it will handle this CGI request, output a page and terminate the program.
+Use this to hook into ikiwiki's cgi script. Each registered cgi hook is
+called in turn, and passed a CGI object. The hook should examine the
+parameters, and if it will handle this CGI request, output a page and
+terminate the program.
 
 ## Wiki configuration
 
-A plugin can access the wiki's configuration via the `%IkiWiki::config` hash.
-The best way to understand the contents of the hash is to look at
+A plugin can access the wiki's configuration via the `%IkiWiki::config`
+hash. The best way to understand the contents of the hash is to look at
 [[ikiwiki.setup]], which sets the hash content to configure the wiki.
 
 ## Wiki data
@@ -104,7 +128,10 @@ use the following hashes, using a page name as the key:
 
 ## Page templates
 
-Plugins are mostly limited to changing the content of pages, to change the look and feel of the wiki it's generally better to use a stylesheet and [[templates]]. However, there are some hooks in the templates that plugins can use to add stuff to the wiki's UI:
+Plugins are mostly limited to changing the content of pages, to change the
+look and feel of the wiki it's generally better to use a stylesheet and
+[[templates]]. However, there are some hooks in the templates that plugins
+can use to add stuff to the wiki's UI:
 
 ### Adding content to the page header
 
diff --git a/doc/todo/plugin.mdwn b/doc/todo/plugin.mdwn
index a8389a0c2..38bdcf37b 100644
--- a/doc/todo/plugin.mdwn
+++ b/doc/todo/plugin.mdwn
@@ -5,7 +5,15 @@ Suggestions of ideas for plugins:
 * [[todo/sigs]] ?
 * [[pageindexes]]
 * Wiki stats, such as total number of links, most linked to pages
-* Support [[RecentChanges]] as a regular page containing a plugin that updates each time there is a change, and statically builds the recent changes list. (Would this be too expensive/inflexible? There might be other ways to do it as a plugin, like making all links to RecentChanges link to the cgi and have the cgi render it on demand.)
+
+* Support [[RecentChanges]] as a regular page containing a plugin that
+  updates each time there is a change, and statically builds the recent
+  changes list. (Would this be too expensive/inflexible? There might be
+  other ways to do it as a plugin, like making all links to RecentChanges
+  link to the cgi and have the cgi render it on demand.) Or using an iframe
+  to inline the cgi, although firefox seems to render that nastily with
+  nested scroll bars.
+
 * Support for smileys or other symbols. I appreciate the support for check
   marks, etc in other wikis. Needs some free smiley files.
 * For PlaceWiki I want to be able to do some custom plugins, including one
@@ -15,4 +23,4 @@ Suggestions of ideas for plugins:
   content. It also needs to update pages when related pages are added,
   so it needs to register dependencies pre-emptively between pages,
   or something. It's possible that this is a special case of backlinks and
-  is best implemented by making backlinks a plugin somehow. --[[Joey]]
-\ No newline at end of file
+  is best implemented by making backlinks a plugin somehow. --[[Joey]]