fix PageSpec ref

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

diff --git a/doc/plugins/write.mdwn b/doc/plugins/write.mdwn
index 1bd3b0f871b34855712417906c711e0100cd7473..4c66e51f865dc4f0490a18d9426286909dfd2d5e 100644 (file)
--- a/doc/plugins/write.mdwn
+++ b/doc/plugins/write.mdwn
@@ -356,21 +356,48 @@ when the page is being previewed.)
 The function is passed named parameters: "page" and "content", and 
 should return the formatted content.
 
 The function is passed named parameters: "page" and "content", and 
 should return the formatted content.
 

+### build_affected
+
+       hook(type => "build_affected", id => "foo", call => \&build_affected);
+
+This hook is called after the directly changed pages have been built,
+and can cause extra pages to be built. If links and backlinks were provided
+by a plugin, this would be where that plugin would rebuild pages whose
+backlinks have changed, for instance. The [[trail]] plugin uses this hook
+to rebuild pages whose next or previous page has changed.
+
+The function should currently ignore its parameters. It returns a list with
+an even number of items (a hash in list context), where the first item of
+each pair is a page name to be rebuilt (if it was not already rebuilt), and
+the second is a log message resembling
+`building plugins/write because the phase of the moon has changed`.
+

 ### delete
 
        hook(type => "delete", id => "foo", call => \&delete);
 
 ### delete
 
        hook(type => "delete", id => "foo", call => \&delete);
 

-Each time a page or pages is removed from the wiki, the referenced function
+After a page or pages is removed from the wiki, the referenced function

 is called, and passed the names of the source files that were removed.
 
 is called, and passed the names of the source files that were removed.
 

-### change
+### rendered

 
 

-       hook(type => "change", id => "foo", call => \&render);
+       hook(type => "rendered", id => "foo", call => \&rendered);

 
 

-Each time ikiwiki renders a change or addition (but not deletion) to the
+After ikiwiki renders a change or addition (but not deletion) to the

 wiki, the referenced function is called, and passed the names of the
 source files that were rendered.
 
 wiki, the referenced function is called, and passed the names of the
 source files that were rendered.
 

+(This hook used to be called "change", but that was not accurate.
+For now, plugins using the old hook name will still work.)
+
+### changes
+
+       hook(type => "changes", id => "foo", call => \&changes);
+
+After ikiwiki renders changes to the wiki, the referenced function is
+called, and passed the names of the source files that were added, modified,
+or deleted.
+

 ### cgi
 
        hook(type => "cgi", id => "foo", call => \&cgi);
 ### cgi
 
        hook(type => "cgi", id => "foo", call => \&cgi);


@@ -580,6 +607,7 @@ describes the plugin as a whole. For example:
 * `description` is a short description of the option.
 * `link` is a link to further information about the option. This can either
   be a [[ikiwiki/WikiLink]], or an url.
 * `description` is a short description of the option.
 * `link` is a link to further information about the option. This can either
   be a [[ikiwiki/WikiLink]], or an url.

+* `htmldescription` is displayed instead of the description by websetup.

 * `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
 * `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


@@ -982,14 +1010,22 @@ This is the standard gettext function, although slightly optimised.
 
 This is the standard ngettext function, although slightly optimised.
 
 
 This is the standard ngettext 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.
+Provide a second parameter whenever possible, since this leads to better
+behaviour for the [[plugins/po]] plugin and `file:///` URLs.
+
+If the second parameter is not specified (or `undef`), the URL will be
+valid from any page on the wiki, or from the CGI; if possible it'll
+be a path starting with `/`, but an absolute URL will be used if
+the wiki and the CGI are on different domains.
+
+If the third parameter is passed and is true, the url will be a fully
+absolute url. This is useful when generating an url to publish elsewhere.

 
 ### `newpagefile($$)`
 
 
 ### `newpagefile($$)`
 


@@ -1101,9 +1137,7 @@ to version control; the subdir can be added if so.
 Remove a file. The filename is relative to the root of the srcdir.
 
 Note that this should not commit the removal, it should only prepare for it
 Remove a file. The filename is relative to the root of the srcdir.
 
 Note that this should not commit the removal, it should only prepare for it

-to be committed when `rcs_commit` (or `rcs_commit_staged`) is called. Note
-that the new file may be in a new subdir that is not yet in version
-control; the subdir can be added if so.
+to be committed when `rcs_commit` (or `rcs_commit_staged`) is called.

 
 #### `rcs_rename($$)`
 
 
 #### `rcs_rename($$)`
 


@@ -1143,19 +1177,19 @@ The data structure returned for each change is:
                ],
        }
 
                ],
        }
 

-#### `rcs_diff($)`
+#### `rcs_diff($;$)`
+
+The first parameter is the rev from `rcs_recentchanges`.
+The optional second parameter is how many lines to return (default: all).

 
 

-The parameter is the rev from `rcs_recentchanges`.

 Should return a list of lines of the diff (including \n) in list
 Should return a list of lines of the diff (including \n) in list

-context, and the whole diff in scalar context.
+context, and a string containing the whole diff in scalar context.

 
 #### `rcs_getctime($)`
 
 This is used to get the page creation time for a file from the RCS, by looking
 it up in the history.
 
 
 #### `rcs_getctime($)`
 
 This is used to get the page creation time for a file from the RCS, by looking
 it up in the history.
 

-It's ok if this is not implemented, and throws an error.
-

 If the RCS cannot determine a ctime for the file, return 0.
 
 #### `rcs_getmtime($)`
 If the RCS cannot determine a ctime for the file, return 0.
 
 #### `rcs_getmtime($)`


@@ -1201,22 +1235,17 @@ Like `rcs_receive`, it should do whatever sanity checks are appropriate
 for the RCS to limit changes to safe changes, and die if a change would
 be unsafe to revert.
 
 for the RCS to limit changes to safe changes, and die if a change would
 be unsafe to revert.
 

-#### `rcs_revert(@)`
+#### `rcs_revert($)`

 
 This is called by the revert web interface. It is passed a named
 parameter rev that is the RCS-specific change ID to revert.
 
 
 This is called by the revert web interface. It is passed a named
 parameter rev that is the RCS-specific change ID to revert.
 

-Addition named parameters: `message`, and `session` (optional).
-
-It should try to revert the specified rev, which includes committing
-the reversion, and returns undef on _success_ and an error message
-on failure.
-
-#### `rcs_showpatch(@)`
+It should try to revert the specified rev, and leave the reversion staged
+so `rcs_commit_staged` will complete it. It should return undef on _success_
+and an error message on failure.

 
 

-This is passed a named parameter rev that is a RCS-specific
-change ID. It should generate a diff-style patch showing the changes
-made and return it.
+This hook and `rcs_preprevert` are optional, if not implemented, no revert
+web interface will be available.

 
 ### PageSpec plugins
 
 
 ### PageSpec plugins