web commit by http://jcflack.myopenid.com/

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

diff --git a/doc/plugins/write.mdwn b/doc/plugins/write.mdwn
index ea2d006300db5d1cfb5e5a70f9030171f9324b07..5def4c67967165f927ae696954c254e72f49221d 100644 (file)
--- a/doc/plugins/write.mdwn
+++ b/doc/plugins/write.mdwn
@@ -92,8 +92,6 @@ function is passed no values.
 
 ### needsbuild
 
-
-
        hook(type => "needsbuild", id => "foo", call => \&needsbuild);
 
 This allows a plugin to manipulate the list of files that need to be
@@ -213,8 +211,8 @@ want to change the default ("page.tmpl"). Template files are looked for in
 Use this to implement html sanitization or anything else that needs to
 modify the body of a page after it has been fully converted to html.
 
-The function is passed named parameters: "page" and "content", and 
-should return the sanitized content.
+The function is passed named parameters: "page", "destpage", and "content",
+and should return the sanitized content.
 
 ### format
 
@@ -222,7 +220,9 @@ should return the sanitized content.
 
 The difference between format and sanitize is that sanitize only acts on
 the page body, while format can modify the entire html page including the
-header and footer inserted by ikiwiki, the html document type, etc.
+header and footer inserted by ikiwiki, the html document type, etc. (It
+should not rely on always being passed the entire page, as it won't be
+when the page is being previewed.)
 
 The function is passed named parameters: "page" and "content", and 
 should return the formatted content.
@@ -363,10 +363,11 @@ next time ikiwiki is run. The hash holds per-page state, so to set a value,
 use `%pagestate{$page}{$id}{$key}=$value`, and to retrieve the value,
 use `%pagestate{$page}{$id}{$key}`.
 
-`$key` can be any string you like, but `$id` must be the same as the "id"
-parameter passed to `hook()` when registering the plugin. This is so
-ikiwiki can know when to delete pagestate for plugins that are no longer
-used.
+The `$value` can be anything that perl's Storable module is capable of
+serializing. `$key` can be any string you like, but `$id` must be the same
+as the "id" parameter passed to `hook()` when registering the plugin. This
+is so ikiwiki can know when to delete pagestate for plugins that are no
+longer used.
 
 When pages are deleted, ikiwiki automatically deletes their pagestate too.
 
@@ -529,12 +530,16 @@ a type that ikiwiki knowns how to htmlize. Otherwise, returns undef.
 Given the name of a source file, returns the name of the wiki page
 that corresponds to that file.
 
-#### `srcfile($)`
+#### `srcfile($;$)`
 
 Given the name of a source file in the wiki, searches for the file in
 the source directory and the underlay directories (most recently added
 underlays first), and returns the full path to the first file found.
 
+Normally srcfile will fail with an error message if the source file cannot
+be found. The second parameter can be set to a true value to make it return
+undef instead.
+
 #### `add_underlay($)`
 
 Adds a directory to the set of underlay directories that ikiwiki will