designated_diarch_overwridden_by_co_ruler_effect

designated_diarch_overwridden_by_co_ruler_effect = {
	$LIEGE$.designated_diarch ?= {
		if = {
			limit = {
				NOT = { this = $CO_RULER$ }
			}
			# Humble or content characters accept this for what it is.
			if = {
				limit = {
					OR = {
						AND = {
							has_trait = humble
							# ... cancelled out by...
							NOT = { has_trait = ambitious }
						}
						AND = {
							has_trait = content
							# ... cancelled out by...
							NOT = { has_trait = arrogant }
						}
					}
				}
				# Annoyance with you.
				add_opinion = {
					target = $LIEGE$
					modifier = disappointed_opinion
					opinion = -10
				}
				# Annoyance with the new co-ruler.
				## Vs. player.
				if = {
					limit = {
						# Rationale for this heinous crime at the top of this block.
						NOT = { exists = scope:ai_recipient }
					}
					add_opinion = {
						target = $CO_RULER$
						modifier = insult_opinion
						opinion = -15
					}
				}
				## Vs. AI.
				else = {
					add_opinion = {
						target = scope:ai_recipient
						modifier = insult_opinion
						opinion = -15
					}
				}
			}
			# Everyone else is outraged.
			else = {
				# Annoyance with you.
				add_opinion = {
					target = $LIEGE$
					modifier = appointed_co_ruler_over_designated_regent_opinion
					opinion = -30
				}
				# Annoyance with the new co-ruler.
				## Vs. player.
				if = {
					limit = {
						# Rationale for this heinous crime at the top of this block.
						NOT = { exists = scope:ai_recipient }
					}
					add_opinion = {
						target = $CO_RULER$
						modifier = appointed_co_ruler_over_designated_regent_opinion
						opinion = -50
					}
				}
				## Vs. AI.
				else = {
					add_opinion = {
						target = scope:ai_recipient
						modifier = appointed_co_ruler_over_designated_regent_opinion
						opinion = -50
					}
				}
			}
		}
	}
}

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