* Add no_override parameter to hook().

* Add a shortcut plugin, inspired by Victor Moral's contributed shortcuts 
  plugin, but featuring a more ikiwiki-ish syntax and with shortcuts that
  can be configured using a page in wiki.

IkiWiki.pm

@@ -641,6 +641,8 @@ sub hook (@) { # {{{
 	if (! exists $param{type} || ! ref $param{call} || ! exists $param{id}) {
 		error "hook requires type, call, and id parameters";
 	}
+
+	return if $param{no_override} && exists $hooks{$param{type}}{$param{id}};
 	
 	$hooks{$param{type}}{$param{id}}=\%param;
 } # }}}

IkiWiki/Plugin/shortcut.pm

@@ -0,0 +1,58 @@
+#!/usr/bin/perl
+package IkiWiki::Plugin::shortcut;
+
+use warnings;
+use strict;
+use IkiWiki;
+
+sub import { #{{{
+	hook(type => "checkconfig", id => "shortcut", call => \&checkconfig);
+	hook(type => "preprocess", id => "shortcut", call => \&preprocess_shortcut);
+} #}}}
+
+sub checkconfig () { #{{{
+	# Preprocess the shortcuts page to get all the available shortcuts
+	# defined before other pages are rendered.
+	IkiWiki::preprocess("shortcuts", "shortcuts",
+		readfile(srcfile("shortcuts.mdwn")));
+} # }}}
+
+sub preprocess_shortcut (@) { #{{{
+	my %params=@_;
+
+	if (! defined $params{name} || ! defined $params{url}) {
+		return "[[shortcut missing name or url parameter]]";
+	}
+
+	hook(type => "preprocess", no_override => 1, id => $params{name},
+		call => sub { shortcut_expand($params{name}, $params{url}, @_) });
+
+	return "shortcut $params{name} points to $params{url}";
+} # }}}
+
+sub shortcut_expand ($$@) { #{{{
+	my $name=shift;
+	my $url=shift;
+	my %params=@_;
+
+	# Get params in original order.
+	my @params;
+	while (@_) {
+		my $key=shift;
+		my $value=shift;
+		push @params, $key if ! length $value;
+	}
+
+	# If the shortcuts page changes, all pages that use shortcuts will
+	# need to be updated.
+	add_depends($params{destpage}, "shortcuts");
+
+	my $text=join(" ", @params);
+	my $encoded_text=$text;
+	$encoded_text=~s/([^A-Za-z0-9])/sprintf("%%%02X", ord($1))/seg;
+	
+	$url=~s/\%s/$encoded_text/g;
+	return "<a href=\"$url\">$text</a>";
+} #}}}
+
+1

basewiki/shortcuts.mdwn

@@ -0,0 +1,8 @@
+This page is used to control what shortcut links are supported by the wiki.
+
+* [[shortcut name=google url="http://www.google.com/search?q=%s"]]
+* [[shortcut name=wikipedia url="http://en.wikipedia.org/wiki/%s"]]
+* [[shortcut name=debbug url="http://bugs.debian.org/%s"]]
+
+To add a new shortcut, use the "shortcut" preprocessor directive. "%s" in
+the url is replaced by the text of the shortcut.

debian/changelog

@@ -1,3 +1,12 @@
+ikiwiki (1.30) UNRELEASED; urgency=low
+
+  * Add no_override parameter to hook().
+  * Add a shortcut plugin, inspired by Victor Moral's contributed shortcuts 
+    plugin, but featuring a more ikiwiki-ish syntax and with shortcuts that
+    can be configured using a page in wiki.
+
+ -- Joey Hess <joeyh@debian.org>  Sun, 15 Oct 2006 14:49:28 -0400
+
 ikiwiki (1.29) unstable; urgency=low
 
   * Patch from Paul Tötterman to use CP in the Makefile.

doc/plugins/contrib/googlemaps.mdwn

@@ -1,5 +1,6 @@
 [[template id=plugin name=googlemaps author="Christian Mock"]]
 [[tag special-purpose]]
+[[meta title"googlemaps (third-party plugin)"]]
 
 `googlemaps` is a plugin that allows using the [Google Maps API][2]
 from ikiwiki.

doc/plugins/contrib/img.mdwn

@@ -1,5 +1,6 @@
 [[template id=plugin name=img author="Christian Mock"]]
 [[tag chrome]]
+[[meta title"img (third-party plugin)"]]
 
 `img` is an enhanced image handling plugin.
 

doc/plugins/contrib/linguas.mdwn

@@ -1,4 +1,5 @@
 [[template id=plugin name=linguas author="Jordà Polo"]]
+[[meta title"linguas (third-party plugin)"]]
 
 Linguas
 =======

doc/plugins/contrib/shortcuts.mdwn

@@ -1,5 +1,10 @@
 [[template id=plugin name=shortcuts included=0 author="[[VictorMoral]]"]]
 [[tag type/format]]
+[[meta title"shortcuts (third-party plugin)"]]
+
+Note: This plugin is different than the "shortcut" plugin now included in
+ikiwiki. I'm leaving it here in case people prefer how this one works.
+--[[Joey]]
 
 *shortcuts* is a plugin for make external links easy in a ikiwiki page.
 It filter the raw source code, searching *wafl expresions* and replacing it

doc/plugins/contrib/shortcuts/discussion.mdwn

@@ -22,3 +22,6 @@ standard across wikis, this approach seems cleaner and easier to learn for
 ikiwiki users.
 
 --[[Joey]]
+
+Update: I've added a "shortcut" plugin that works as described above.
+--[[Joey]]

doc/plugins/shortcut.mdwn

@@ -0,0 +1,12 @@
+[[template id=plugin name=shortcut included=1 author="[[Joey]]"]]
+[[tag type/format]]
+
+This plugin allows external links to commonly linked to sites to be made
+more easily using shortcuts. Some examples of using shortcuts include:
+
+	\[[google foo]]
+	\[[wikipedia War of 1812]]
+	\[[debbug 12345]]
+
+The available shortcuts are defined on the [[shortcuts]] page in
+the wiki.

doc/plugins/write.mdwn

@@ -210,6 +210,11 @@ ikiwiki program.
 
 Hook into ikiwiki's processing. See the discussion of hooks above.
 
+Note that in addition to the named parameters described above, a parameter
+named no_override is supported, If it's set to a true value, then this hook
+will not override any existing hook with the same id. This is useful if
+the id can be controled by the user.
+
 #### `debug($)`
 
 Logs a debugging message. These are supressed unless verbose mode is turned