Merge commit 'smcv/escape-feed-html'

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

diff --git a/doc/plugins/write.mdwn b/doc/plugins/write.mdwn
index 12bd336621fe8c94338b5a8bbcd3c4478ff45c51..58c04d97adf6a7e64aec96f129abcbc946de162c 100644 (file)
--- a/doc/plugins/write.mdwn
+++ b/doc/plugins/write.mdwn
@@ -128,26 +128,34 @@ of a plugin.
 
         hook(type => "preprocess", id => "foo", call => \&preprocess);
 
 
         hook(type => "preprocess", id => "foo", call => \&preprocess);
 

-Replace "foo" with the command name that will be used inside brackets 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, while a "destpage" parameter gives the name of the page the
-content is going to (different for inlined pages), and a "preview"
-parameter is set to a true value if the page is being previewed. All
-parameters included in the directive are included as named parameters as
-well. Whatever the function returns goes onto the page in place of the
+Replace "foo" with the command name that will be used for the preprocessor

 directive.
 
 directive.
 

-An optional "scan" parameter, if set to a true value, makes the hook be
-called during the preliminary scan that ikiwiki makes of updated pages,
-before begining to render pages. This parameter should be set to true 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 contets, you
-can assume it's being run in scan mode.)
+Each time the directive is processed, the referenced function (`preprocess`
+in the example above) is called. Whatever the function returns goes onto
+the page in place of the directive. Or, if the function aborts using
+`error()`, the directive will be replaced with the error message.
+
+The function is passed named parameters. First come the parameters set
+in the preprocessor directive. These are passed in the same order as
+they're in the directive, and if the preprocessor directive contains a bare
+parameter (example: `\[[!foo param]]`), that parameter will be passed with
+an empty value.
+
+After the parameters from the preprocessor directive some additional ones
+are passed: A "page" parameter gives the name of the page that embedded the
+preprocessor directive, while a "destpage" parameter gives the name of the
+page the content is going to (different for inlined pages), and a "preview"
+parameter is set to a true value if the page is being previewed.
+
+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.)

 
 Note that if the [[htmlscrubber]] is enabled, html in
 [[ikiwiki/PreProcessorDirective]] output is sanitised, which may limit what
 
 Note that if the [[htmlscrubber]] is enabled, html in
 [[ikiwiki/PreProcessorDirective]] output is sanitised, which may limit what


@@ -348,6 +356,15 @@ This hook is called whenever ikiwiki normally saves its state, just before
 the state is saved. The function can save other state, modify values before
 they're saved, etc.
 
 the state is saved. The function can save other state, modify values before
 they're saved, etc.
 

+## renamepage
+
+       hook(type => "renamepage", id => "foo", call => \&renamepage);
+
+This hook is called by the [[plugins/rename]] plugin when it renames
+something. The hook is passed named parameters: `page`, `oldpage`,
+`newpage`, and `content`, and should try to modify the content to reflect
+the name change. For example, by converting links to point to the new page.
+

 ## Plugin interface
 
 To import the ikiwiki plugin interface:
 ## Plugin interface
 
 To import the ikiwiki plugin interface:


@@ -573,12 +590,15 @@ time.
 
 This is the standard gettext function, although slightly optimised.
 
 
 This is the standard gettext function, although slightly optimised.
 

-#### `urlto($$)`
+#### `urlto($$;$)`

 
 Construct a relative url to the first parameter from the page named by the
 second. The first parameter can be either a page name, or some other
 destination file, as registered by `will_render`.
 
 
 Construct a relative url to the first parameter from the page named by the
 second. The first parameter can be either a page name, or some other
 destination file, as registered by `will_render`.
 

+If the third parameter is passed and is true, an absolute url will be
+constructed instead of the default relative url.
+

 #### `targetpage($$)`
 
 Passed a page and an extension, returns the filename that page will be
 #### `targetpage($$)`
 
 Passed a page and an extension, returns the filename that page will be