[baq]

Thanks, that makes sense. The cheat sheets either didn’t contain the op log-reflog analog or I missed it.

For the record I’ve seen ‘cannot undo a merge’ after jj undo 3-4 times, can’t remember now. I was trying to squash a change into a single commit for a GitHub pr for the first time and couldn’t figure out how to map jj commits into something acceptable, then decided to undo the whole thing and actually managed to overwrite some of my changes in a way I couldn’t find them, fortunately only a few lines of boilerplate.