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`jj workspace add ../project-name-2` vs `git worktree add ../project-name-2`

Sorry, but I don't get the improvement.

The author doesn't mention this as an improvement to git, just showcases that an equivalent feature exists in jj. This is useful to me, a jj noob that was not aware it's possible.

there isn't any. it's just possible in jj, which does not have feature parity with git and probably doesn't aim to have it anytime soon, if ever (not a contributor, so please don't quote me)

It depends on what you mean by "feature parity." jj has some features git doesn't, and git has some features jj doesn't. That's likely to be the case into the future, for sure.

There's also like, some features of git aren't features in jj, but that doesn't mean you can't do that stuff with jj, it just works differently. The index or stashes, for example. In a literal sense, that's not parity, but in a logical sense, it is.

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