laughinghan/mathquill — comment on commit ebc29666af8969c811e17996d0c662d5e4fe157e
File:  line 0
By jayferd:

Really? `siblingify` took 6 arguments, and it was pretty hard to describe what it actually did. That edge case is unfortunate, but it would probably be avoidable if we made set{Next,Prev} "private", as in my original comment.