The field values are treated as HTML entity-escaped text, so you can include
a quote in the text by writing `"` and so on.
-Supported fields:
+## Supported fields
* title
Specifies a short description for the page. This will be put in
the html header, and can also be displayed by eg, the [[map]] directive.
+* keywords
+
+ Specifies keywords summarizing the contents of the page. This
+ information will be put in the html header. Only letters,
+ numbers, spaces and commas are allowed in this string; other
+ characters are stripped. Note that the majority of search
+ engines, including Google, do not use information from the
+ keywords header.
+
* permalink
Specifies a permanent link to the page, if different than the page
* date
- Specifies the creation date of the page. The date can be entered in
- nearly any format, since it's parsed by [[!cpan TimeDate]].
+ Specifies the creation date of the page. This creates a
+ `<meta name="date" content="...">` header in the HTML output, but also
+ modifies the internal `ctime` in the
+ [[!iki tips/inside_dot_ikiwiki desc="internal index"]].
+ The date can be entered in nearly any format, since it's parsed by
+ [[!cpan TimeDate]] but invalid dates yield an error in 3.20180321
+ or later.
* stylesheet
[[!iki plugins/htmlscrubber desc=htmlscrubber]] plugin is enabled, since it can be used to
insert unsafe content.
+* enclosure
+
+ Specifies a link to a file to be rendered as an "enclosure" in
+ RSS/Atom feeds (and a plain old link in HTML). Useful for
+ [[!iki podcast desc=podcasting]].
+
* redir
Causes the page to redirect to another page in the wiki.
\[[!meta redir=otherpage]]
- Optionally, a delay (in seconds) can be specified. The default is to
- redirect without delay.
+ The default is to redirect without delay.
+ Optionally, a delay (in seconds) can be specified: "delay=10"
It can also be used to redirect to an external url. For example:
modification time, like Planet: for instance, when editing an old blog post
to add tags, you could set `updated` to be one second later than the original
value. The date/time can be given in any format that
- [[!cpan TimeDate]] can understand, just like the `date` field.
+ [[!cpan TimeDate]] can understand, just like the `date` field and maps to the
+ `<meta name="updated" content="...">` HTML header and internal `mtime` field.
* foaf
\[[!meta foaf=foaf.rdf]]
+* name
+
+ Adds a HTML `<meta>` header with this `name` attribute. Its other attributes are
+ taken from the other parameters, so for example
+ `\[[!meta name="foo" content="bar" x-non-standard-attribute="baz"]]`
+ becomes `<meta name="foo" content="bar" x-non-standard-attribute="baz">`. This
+ won't be allowed if the [[!iki plugins/htmlscrubber desc=htmlscrubber]] plugin is enabled,
+ since it can be used to insert unsafe content.
+
+## Other fields
+
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 [[!iki plugins/htmlscrubber desc=htmlscrubber]] plugin is enabled,
-since it can be used to insert unsafe content.
+written to the generated html page as a <meta> header. For example,
+`\[[!meta foo="bar"]]` becomes `<meta name="foo" content="bar">`. As
+with `name`, this won't be allowed if the [[!iki plugins/htmlscrubber
+desc=htmlscrubber]] plugin is enabled.
+
+This syntax cannot be used for meta headers with unusual names, in
+particular names containing `:` such as `flattr:id` and `twitter:card`.
+Please use `\[[!meta name="..." content="..."]]` for those headers.
[[!meta robots="noindex, follow"]]