Depends on D19349. Ref T13105. This was the behavior in Diffusion before with a little hard-coded snippet.

Remove that snippet ("diffusion-jump-to") and add a more general-purpose snippet to SourceView.

This is a tiny bit hacky still (and probably doesn't work quite right with Quicksand) but gets things working again and works in all of Files, Paste, and Diffusion.

Followed links to particular lines in Paste, Files and Diffusion; got scrolled to the right place.