restore_inheritance_effect

restore_inheritance_effect = {
	remove_trait = disinherited
	if = {
		limit = {
			has_opinion_modifier = {
				modifier = disinherited_opinion
				target = scope:puppet_or_actor
			}
		}
		remove_opinion = {
			modifier = disinherited_opinion
			target = scope:puppet_or_actor
		}
		house = {
			if = {
				limit = {
					NOT = {
						any_house_member = {
							this != scope:recipient
							has_opinion_modifier = {
								modifier = disinherited_opinion
								target = scope:puppet_or_actor
							}
						}
					}
				}
				every_house_member = {
					custom = all_house_members
					remove_opinion = {
						modifier = disinherited_house_member_opinion
						target = scope:puppet_or_actor
						single = yes
					}
				}
			}
		}
	}
	else = {
		if = {
			limit = {
				this != scope:puppet_or_actor
			}
			add_opinion = {
				modifier = restored_inheritance_opinion
				target = scope:puppet_or_actor
			}
		}
		house = {
			every_house_member = {
				limit = {
					this != scope:recipient
					this != scope:puppet_or_actor
				}
				custom = all_house_members
				add_opinion = {
					modifier = restored_house_member_inheritance_opinion
					target = scope:puppet_or_actor
				}
			}
		}
	}
	#Remove nithing status, if applicable.
	hidden_effect = {
		if = {
			limit = { has_character_modifier = nithing_fp1_modifier }
			remove_character_modifier = nithing_fp1_modifier
		}
	}
}

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