This allows a plugin to manipulate the list of files that need to be
built when the wiki is refreshed. The function is passed a reference to an
-array of pages that will be rebuilt, and can modify the array, either
+array of files that will be rebuilt, and can modify the array, either
adding or removing files from it.
### scan
This hook is called early in the process of building the wiki, and is used
as a first pass scan of the page, to collect metadata about the page. It's
-mostly used to scan the page for WikiLinks, and add them to `%links`.
-Present in IkiWiki 2.40 and later.
+mostly used to scan the page for [[WikiLinks|ikiwiki/WikiLink]], and add
+them to `%links`. Present in IkiWiki 2.40 and later.
The function is passed named parameters "page" and "content". Its return
value is ignored.
If `hook` is passed an optional "scan" parameter, set to a true value, this
makes the hook be called during the preliminary scan that ikiwiki makes of
updated pages, before begining to render pages. This should be done if the
-hook modifies data in `%links`. Note that doing so will make the hook be
-run twice per page build, so avoid doing it for expensive hooks. (As an
-optimisation, if your preprocessor hook is called in a void context, you
-can assume it's being run in scan mode, and avoid doing expensive things at
-that point.)
+hook modifies data in `%links` (typically by calling `add_link`). Note that
+doing so will make the hook be run twice per page build, so avoid doing it
+for expensive hooks. (As an optimisation, if your preprocessor hook is
+called in a void context, you can assume it's being run in scan mode, and
+avoid doing expensive things at that point.)
Note that if the [[htmlscrubber]] is enabled, html in
preprocessor [[ikiwiki/directive]] output is sanitised, which may limit what
hook(type => "linkify", id => "foo", call => \&linkify);
-This hook is called to convert [[WikiLinks|WikiLink]] on the page into html
+This hook is called to convert [[WikiLinks|ikiwiki/WikiLink]] on the page into html
links. The function is passed named parameters "page", "destpage", and
"content". It should return the linkified content. Present in IkiWiki 2.40
and later.
Plugins that implement linkify must also implement a scan hook, that scans
-for the links on the page and adds them to `%links`.
+for the links on the page and adds them to `%links` (typically by calling
+`add_link`).
### htmlize
return the htmlized content.
If `hook` is passed an optional "keepextension" parameter, set to a true
-value, then this extension will not be stripped from the source filename when
+value, then the extension will not be stripped from the source filename when
generating the page.
+If `hook` is passed an optional "noextension" parameter, set to a true
+value, then the id parameter specifies not a filename extension, but
+a whole filename that can be htmlized. This is useful for files
+like `Makefile` that have no extension.
+
### pagetemplate
hook(type => "pagetemplate", id => "foo", call => \&pagetemplate);
* `example` can be set to an example value.
* `description` is a short description of the option.
* `link` is a link to further information about the option. This can either
- be a wikilink, or an url.
+ be a [[ikiwiki/WikiLink]], or an url.
* `advanced` can be set to true if the option is more suitable for advanced
users.
* `safe` should be false if the option should not be displayed in unsafe
PageSpec should match against. If not passed, relative PageSpecs will match
relative to the top of the wiki.
+#### `pagespec_match_list($$;@)`
+
+Passed a reference to a list of page names, and [[ikiwiki/PageSpec]],
+returns the set of pages that match the [[ikiwiki/PageSpec]].
+
+Additional named parameters can be passed, to further limit the match.
+The most often used is "location", which specifies the location the
+PageSpec should match against. If not passed, relative PageSpecs will match
+relative to the top of the wiki.
+
+Unlike pagespec_match, this may throw an error if there is an error in
+the pagespec.
+
#### `bestlink($$)`
Given a page and the text of a link on the page, determine which
#### `linkpage($)`
This converts text that could have been entered by the user as a
-[[WikiLink]] into a wiki page name.
+[[ikiwiki/WikiLink]] into a wiki page name.
#### `srcfile($;$)`
filename of the page. For example, `targetpage("foo", "rss", "feed")`
will yield something like `foo/feed.rss`.
+#### `add_link($$)`
+
+This adds a link to `%links`, ensuring that duplicate links are not
+added. Pass it the page that contains the link, and the link text.
+
## Miscellaneous
### Internal use pages
To make an internal use page, register a filename extension that starts
with "_". Internal use pages cannot be edited with the web interface,
-generally shouldn't contain wikilinks or preprocessor directives (use
+generally shouldn't contain [[WikiLinks|ikiwiki/WikiLink]] or preprocessor directives (use
either on them with extreme caution), and are not matched by regular
PageSpecs glob patterns, but instead only by a special `internal()`
[[ikiwiki/PageSpec]].
IkiWiki::PageSpec package, that is named `match_foo`, where "foo()" is
how it will be accessed in a [[ikiwiki/PageSpec]]. The function will be passed
two parameters: The name of the page being matched, and the thing to match
-against. It may also be passed additional, named parameters. It should return
-a IkiWiki::SuccessReason object if the match succeeds, or an
-IkiWiki::FailReason object if the match fails.
+against. It may also be passed additional, named parameters.
+
+It should return a IkiWiki::SuccessReason object if the match succeeds, or
+an IkiWiki::FailReason object if the match fails. If the match cannot be
+attempted at all, for any page, it can instead return an
+IkiWiki::ErrorReason object explaining why.
### Setup plugins
For example, your plugin might want to override `displaytime`, to change
the html markup used when displaying a date. Or it might want to override
`IkiWiki::formattime`, to change how a date is formatted. Or perhaps you
-want to override `bestlink` and change how ikiwiki deals with WikiLinks.
+want to override `bestlink` and change how ikiwiki deals with [[WikiLinks|ikiwiki/WikiLink]].
By venturing into this territory, your plugin is becoming tightly tied to
ikiwiki's internals. And it might break if those internals change. But