Anyone aware of a way to use magit to do git diff branch-a...branch-b?

you can use diff for range

Oh, so then you would literally type branch-a...branch-b for the range?

I believe you can? I was on branch-a and did diff for range and typed branch-b

which seemed like it worked

Yeah, at least at 1st glance that looks like it works.

I think if you type just branch-b, you'd get branch-a..branch-b with two dots, not branch-a...branch-b.

Yeah, confirmed

oh, I didn't even see there was a difference

what's the difference?

Yeah, not a very well-advertised one 😛

three dots means just show the changes made on branch-b, ie don't show commits that have been made on branch-a and not merged to branch-b.

oh, that's interesting

I thought I knew a lot about git, turns out there are whole corners that lay undiscovered

But actually typing branch-a...branch-b in magit diff range did give me that.

Yeah, same here, I just discovered the triple-dot thing this year...

Which is why IMO a tool like magit is so awesome: it provides more affordances to guide you in discovering git's capabilities. Which is what all the tools like SourceTree kinda try to do too, but they're all pretty crippled...

At least the ones I've tried.

@eggsyntax - I think the .. vs ... is the other way around. A..B gives everything in B but not A. A...B gives all commits unique to either. https://stackoverflow.com/questions/462974/what-are-the-differences-between-double-dot-and-triple-dot-in-git-com#24186641

And agreed about git affordances! 👍

Whups, truth, got that backward. Thanks!

Weirdly, it may be reversed in magit. Or else I'm reading it wrong :thinking_face:

That is weird! I'm interested to know what you figure out.

Something's really weird here.

[13:20] pages> git diff master...ui/debit-memo-add-real-data | wc
   1789    6591   76485

[13:38] pages> git diff master..ui/debit-memo-add-real-data | wc
   4382   17411  221281

Could that answer be wrong?

That is weird. I wonder if diff is presenting things differently somehow. Can you try rev-list in place of diff and see what you get?

if this is the case in magit it seems like a bug in magit after reading pro git

https://git-scm.com/book/en/v2/Git-Tools-Revision-Selection#Commit-Ranges

I see, it's just a bit confusing. I think the explanation in this answer is a lot clearer: https://stackoverflow.com/a/7256391/284564

scroll to "Double Dot" and "Triple Dot"

Meh, tried to post the relevant screenshot, but apparently clojurians is out of storage space 😆

I see the screenshot. Nice explanation. So it was git diff after all.

So .. is comparing tip to tip; ... is comparing divergence point to tip.