Po Lu's port of GNU Emacs to Android has been approved, pending a couple of minor checks, to be merged into the main Emacs tree and thereafter maintained in-project like any other supported architecture.
(Editorial commentary: This is an amazing piece of work by Po Lu. Yes, it works on LineageOS. Users / testers / contributors welcome, as always!)
(Editorial commentary: This is an amazing piece of work by Po Lu. Yes, it works on LineageOS. Users / testers / contributors welcome, as always!)