I've had some complex conflicts and it was hard to recognise parts which were zombies. It certainly confused smerge-ediff.\r +
This patch changes the zombie conflict markers to pluses and minuses and ensures that they nest correctly within normal conflicts.
Rewritten to work with the latest conflict fixes as it wasn't possible to merge the original patches due to memory exhaustion on my machine with 4GB.
Something seems to go wrong adding the patches here. See https://nest.pijul.com/rohan/pijul:zombies