Requests for comment/Inventory hooks, assess need

Request for comment (RFC)
Inventory hooks, assess need
Component General
Creation date
Author(s) ^demon
Document status in draft

Background edit

MediaWiki currently has many hundred hook calls. Many were introduced with little discussion or consideration and are rarely used.

Problem edit

Hooks make code hard to test, hard to debug, and tend to be rather single-use in their implementation.

Proposal edit

We should inventory all of our hooks. See which ones are being used and are necessary. Can some of them possibly be rethought or replaced?