EB said:
heart_tail: The wiki states (and I agree with it) that this should not be used for tails with heart-shaped tips (which is covered by demon_tail). The only time both should be tagged is when the demon tail is also bent in the shape of a heart like post #1147330. I don't think there was a forum discussion on this though, so making sure this is agreed before I do any further cleanup of the tag.
Agreed.
Provence, the heart_tail tag is for the distinct bent tails. There are various demon tail tips, from hearts to arrows to spikes to playing card symbols to... It's still a demon tail.