Not sure if I'm using this wrong or not, but I've downloaded Healer-1.1.0.jar from Releases and tried to put it in mods or in mods\1.7.10.
In both cases, running ${date:YYYY} on singleplayer prints 2021 onto the game log which is not supposed to happen.
Any idea what's going wrong?
Thanks!

I'm actually not sure how to test that but thank you for the response. Why not disable all lookups?

Sure I can clear the lookup map, but it will not help speed up the logging in any way. (Log4j will still attempt to search for ${, and if there is any, it will still step into the Interpolator code and do regex matching) That can only be achieved by using another log4j jar (this is what peterix is doing with MultiMC, as with many other launchers) Since there is no gain, I didn't bother to clear the lookup map.

Thanks for the detailed response!

Try jndi something instead. This mod does not remove all lookups. Only JNDI is removed.