I tried the starvingdead script because I love evil biomes, but the ever-multiplying undead in the caverns kept killing my FPS within a year of embark.
When the local necromancer came by with his undead lackeys and besieged my fort, I locked the doors and decided to wait it out. Lo and behold, after three months the besieging undead melt away. I send my ax lords to deal with the necromancer and he promptly hightails it back to his tower. Unfortunately, the siege tag does not leave with him, and now my fort is stuck in a perpetual siege mode. I've dfhack revealed, exterminate undead, and sent dwarfs to scour the land for hidden units but no luck, the tag remains.
Is there some way to make the mod only affect undead critters and such but leave besieging sentient undead untouched by decay? This mod is essential for preventing re-animating biome FPS death, but I would like the necromancer undead to remain undecayed for masochistic and bug prevention reasons.