In the spirit of yesterday's breaking change, here's another one. As of r35140 [1], requesting e.g. a move token while you're not allowed to move pages* will no longer exit with an error, but throw a warning instead and give you a result set without the move token. An example:

api.php?action=query&prop=info&intoken=edit|delete|protect|move&titles=Main_Page (made by an anonymous user)

<?xml version="1.0" encoding="utf-8"?> <api> <query> <normalized> <n from="Main_Page" to="Main Page" /> </normalized> <pages> <page pageid="98" ns="0" title="Main Page" touched="2008-05-09T09:25:47Z" lastrevid="485" counter="6" length="149" edittoken="+\" /> </pages> </query> <warnings> <info>Action 'protect' is not allowed for the current user Action 'move' is not allowed for the current user Action 'delete' is not allowed for the current user</info> </warnings> </api>

* NOTE: This only applies to the 'move' permission in general, NOT to limitations on individual pages (immobile namespace, page protected, etc.). Because of this, the fact that prop=info gives you a move token just means that you have the 'move' right, NOT that you'll actually be able to move that particular page.

Roan Kattouw (Catrope)

[1] http://svn.wikimedia.org/viewvc/mediawiki?view=rev&revision=35140