The development branch of WordPress now bundles Prototype 1.5. A number of themes and plugins have been bundling Prototype, so we decided to make it available out-of-the-box. We also use it internally for the new autosave feature.
The development branch also has a nifty script loader from mdawaffe that makes including JS in a cacheable way very easy. For example, if you want to use Prototype in your theme, include it like so:
wp_enqueue_script('prototype');
[...] I will definitely continue with WordPress. It has achieved the privileged milestone of one million downloads and is coming up with some dynamic features. WordPress.com too has seen massive growth, it hosts 310 thousand blogs on its first birthday. WordPress.com has time and again shown that it is one of the highest quality blogging sites, with lot of high traffic and slashdottable blogs. [...]
The script loader works for themes as long as this patch is applied
Applied.
This is great. I hope more AJAX plugins make use of this. I have 3 or 4 AJAX plugins now, all of which use slightly different versions of prototype or prototype.lite or moo.fx, so I’m forced to load all of them to avoid breaking the plugins.
[...] RyanのPrototype and the Script Loader によると、多くのテーマやプラグインがPrototypeをバンドルしてるので、WordPressの開発版（trunk）でもPrototypeをバンドルするようにしたとのこと。PrototypeとはJavaScriptのフレームワークで、Ajaxとかが簡単に実装できるようになるみたい。また、新しい自動保存機能もこのPrototypeを使用しているとのこと。 [...]
[...] Original post by Ryan and software by Elliott Back [...]
[...] It has achieved the privileged milestone of one million downloads and is coming up with some dynamic features. WordPress.com too has seen massive growth, it hosts 310 thousand blogs on its first birthday. [...]