It is a layer on top of git that adds its own terminology and processes. The DX doesn't come close to git in understandability, what is `jj bookmark move main --to @-` and how is it more understandable than git?
> jj bookmark move
Presumably, this part is reasonably clear. “I want to move a bookmark.”
> main
Which bookmark to move. I think this is probably clear from context?
> --to @-
And here’s the part that looks foreign to a non-jj user. This syntax is familiar to jj users because the same revset syntax is used across the whole CLI. `@` is the working copy commit (the commit you have “checked out” that you are currently editing), and `@-` specifies its parent.
Because it’s just a revset, you could specify that same command in a number of ways:
- If you know the parent’s commit ID or change ID, you could use that instead: `--to abc123`
- If there happens to be another bookmark already there, you can use its name: `--to other-feature`
- You probably wouldn’t type this in the terminal, but you could do exotic things like `--to 'mutable() & description("foobar2000")'` to assign the bookmark to the work-in-progress commit that has "foobar2000" in the commit message.
Revsets used pervasively are one of the things that make the DX lovely.