some questions and links to existing patches

[git.ikiwiki.info.git] / doc / plugins / meta.mdwn

diff --git a/doc/plugins/meta.mdwn b/doc/plugins/meta.mdwn
index 479d62c434034262e000a01f843079b49a2d89e8..0a934fc5cb73438f43e7d1c147f527db95007b0b 100644 (file)
--- a/doc/plugins/meta.mdwn
+++ b/doc/plugins/meta.mdwn
@@ -27,12 +27,12 @@ Supported fields:
 * license
 
   Specifies a license for the page, for example, "GPL". Can contain
-  WikiLinks.
+  WikiLinks and arbitrary markup.
 
 * copyright
 
   Specifies the copyright of the page, for example, "Copyright 2007 by
-  Joey Hess". Can contain WikiLinks.
+  Joey Hess". Can contain WikiLinks and arbitrary markup.
 
 * author
 
@@ -64,10 +64,30 @@ Supported fields:
 * openid
 
   Adds html <link> tags to perform OpenID delegation to an external
-  OpenID server. This lets you use an ikiwiki page as your OpenID. Example:
+  OpenID server (for `openid` and `openid2`). An optional `xrds-location`
+  parameter lets you specify the location of any [eXtensible Resource
+  DescriptorS](http://www.windley.com/archives/2007/05/using_xrds.shtml).
 
-       \\[[meta openid="http://joeyh.myopenid.com/"
-       server="http://www.myopenid.com/server"]]
+  This lets you use an ikiwiki page as your OpenID. Example:
+
+       \\[[meta openid="http://joeyh.myopenid.com/"
+       server="http://www.myopenid.com/server"
+       xrds-location="http://www.myopenid.com/xrds?username=joeyh.myopenid.com""]]
+
+* link
+
+  Specifies a link to another page. This can be used as a way to make the
+  wiki treat one page as linking to another without displaying a user-visible
+  [[ikiwiki/WikiLink]]:
+
+       \[[meta link=otherpage]]
+
+  It can also be used to insert a html <link> tag. For example:
+
+       \[[meta link="http://joeyh.myopenid.com/" rel="openid.delegate"]]
+
+  However, this latter syntax won't be allowed if the [[htmlscrubber]] is
+  enabled, since it can be used to insert unsafe content.
 
 * redir
 
@@ -88,6 +108,21 @@ Supported fields:
   For both cases, an anchor to jump to inside the destination page may also be
   specified using the common `PAGE#ANCHOR` syntax.
 
+* robots
+
+  Causes the robots meta tag to be written:
+
+        \[[meta robots="index, nofollow"]]
+
+  Valid values for the attribute are: "index", "noindex", "follow", and
+  "nofollow". Multiple comma-separated values are allowed, but obviously only
+  some combinations make sense. If there is no robots meta tag, "index,
+  follow" is used as the default.
+
+  The plugin escapes the value, but otherwise does not care about its
+  contents. In particular, it does not check the values against the set of
+  valid values but serves whatever you pass it.
+
 If the field is not one of the above predefined fields, the metadata will be
 written to the generated html page as a <meta> header. However, this
 won't be allowed if the [[htmlscrubber]] is enabled, since it can be used to