Hey,
I had a go at this and have implemented a working solution for SpecialPages, Actions and API modules. Slightly surprised at how easy this was considering some of the involved code is procedural soup with a strong taste of global state.
* https://gerrit.wikimedia.org/r/#/c/49777/ * https://gerrit.wikimedia.org/r/#/c/49781/ * https://gerrit.wikimedia.org/r/#/c/49785/
So assuming the arguing about typos and bracket placement takes average time, it ought to be in somewhere round MW 1.25 :)
Cheers
-- Jeroen De Dauw http://www.bn2vs.com Don't panic. Don't be evil. --