formalise_the_daneland_effect

formalise_the_daneland_effect = {
	# To start with, remove the partition variable (so that we don't calculate partition resolution whilst taking the alternate route).
	remove_global_variable = partition_active_danelaw
	# Clarify the status of the partition for the player.
	custom_tooltip = formalise_the_daneland_effect.partition_status.tt
	# Sort the title swap.
	## First, flip everything in k_danelaw to k_daneland.
	custom_tooltip = formalise_the_daneland_effect.adjust_de_jures.tt
	hidden_effect = {
		title:k_danelaw = {
			every_in_de_jure_hierarchy = {
				limit = { tier = tier_duchy }
				set_de_jure_liege_title = title:k_daneland
			}
		}
		# Add k_daneland to whatever empire k_danelaw is part of.
		title:k_daneland = { set_de_jure_liege_title = title:k_danelaw.de_jure_liege }
	}
	## Then, swap the two titles out.
	### Give k_daneland to scope:founder.
	create_title_and_vassal_change = {
		type = created
		save_scope_as = title_change
	}
	title:k_daneland = {
		change_title_holder = {
			holder = scope:founder
			change = scope:title_change
		}
	}
	resolve_title_and_vassal_change = scope:title_change
	### Do some assorted aesthetic prep-work on k_daneland.
	hidden_effect = {
		title:k_daneland = {
			# Give them k_danelaw's CoA.
			set_coa = title:k_danelaw
			# & title history.
			copy_title_history = title:k_danelaw
		}
	}
	### Destroy k_danelaw.
	destroy_title = title:k_danelaw
	# All claims on k_danelaw become claims on k_daneland
	title:k_danelaw = {
		every_claimant = {
			custom = formalise_the_daneland_effect.all_claimants
			remove_claim = title:k_danelaw
			add_unpressed_claim = title:k_daneland
		}
	}
	# Step a rivalry with scope:england.
	scope:founder = {
		progress_towards_rival_effect = {
			CHARACTER = scope:england
			OPINION = -75
			REASON = rival_daneland
		}
	}
}

As written in game/common/scripted_effects/00_decisions_effects.txt.