We have a working draft MR to add multi-cursor support in Reflection(former Aardvark), a proof of concept local-first text editor that uses p2panda for GNOME.
And now it's merged in main. 😁
@jsparber Does GtkTextView have multi-cursor support now ?
@vixalientoots no, it's custom drawing, but you can have multiple marks which look like cursors if they set to be visible.