The Battle for Wesnoth Forums

That contradicts what you said before. If it is so completely bugged then it was never supported at all.

Soliton confirmed that [filter_adjacent] was supported before 1.19.10 too.

Why you are talking about multiple? The example that fails only uses one.

Readme says it is in closed beta, you need to ask for key. https://github.com/davewx7/citadel

Count determines how many adjacent units must match.

Wiki was still not good enough, I removed your change from SUF and added devfeature in abilities instead. It does not make much sense though since abilities have supported [filter_adjacent] since 2006 https://wiki.wesnoth.org/index.php?titl ... ldid=11553

That does not make sense. You said to use [filter] in standard unit filter, which is not allowed still, we have open issue https://github.com/wesnoth/wesnoth/issues/4316

And https://wiki.wesnoth.org/AbilitiesWML still does not say anything about version 1.19.10

mode=append looks made up, but this example should work anyways.

If you dont have proof that you can use them you cant use them.

The fact you use notepad++ is your design choice. For ageless I have done changes with python.

You have scared them away. They dont want to be included in your addons.

Delete and repost if you really need.

In this case you dont even need to make a mod, there already are some that remove rng.