It would be very useful to be able to perform operations on selections in MediaWiki. Some special pages already work this way such as Special:NukeDPL, but it would be better to use Special:Workflow for this which allows one to select articles using a DPL query, or pasting a list in directly. Then this selection can be refined further using checkbox list, or an operation from a list of many can be performed on the selection.
The available operations should be easily extendable in-wiki, and should later be able to be performed from the job queue. It should be able to be easily connected to existing selection-based special pages like Special:Nuke.
A dropdown list of selection queries should be available for use instead of just the textarea for pasting in a query or list. This could just obtain its list from the Query namespace, stripping the mode=category.
An action link should allow the article links within the current article content (or category/query result) to be used as the selection on which to perform an operation. Clicking on the "workflow" action takes you to the Special:Workflow checkbox-list view.
Some operations that would be very useful over selections are:
- Change workflow state
- Add to category
- Remove from category
- Update template parameter(s)
- Regexp rename title
- Regexp replace content
- Prepend content
- Append content
- Undo last revision
- Move revision back to a particular date
- Revert last authors edits (rollback)
- Delete article
- Delete article and history