I'm working on a project to set Bach's music on lilypond files (so that people can share and enhance to better match manuscripts). I just uploaded BWV 1004 to the repo but I'm wondering what's the meaning of a dot that I see written on the manuscripts I have at hand on the bar before last of Ciaccona? It's written on top of the first G that opens the bar. Is it staccato?
In case you are wondering here's the project: https://github.com/eantoranz/bwv