@HaraldKi It is not riddles, it is a mistake as acknowledged in https://mastodon.social/@PuercoPop/114269945473188483
That said, that point about people re-implementing still stands. ej.
avy-goto-line, org-goto-line[0], sly-goto-line[1], go--goto-line[2], etc.
[0]: https://git.savannah.gnu.org/cgit/emacs/org-mode.git/tree/lisp/org-macs.el#n867
[1]: https://github.com/joaotavora/sly/blob/c48defcf58596e035d473f3a125fdd1485593146/sly.el#L4141
[2]: https://github.com/dominikh/go-mode.el/blob/0ed3c5227e7f622589f1411b4939c3ee34711ebd/go-mode.el#L2400C8-L2400C21