Summary:
Fixes T9661. Users can construct arbitrarily long chains from the remote, like:
(remote) origin/master -> (local) cascade-a -> (local) cascade-b -> (local) cascade-c -> (local) cascade-d
When a user lands "cascade-d" onto "origin/master", we should pull A, B and C if they aren't ahead of the remote.
If a user lands "cascade-d" onto itself, we should pull A, B, and C if they aren't ahead of the remote, then reset D to the remote.
We also find this chain if the last component of it is connected by the local branch having the same name as the remote branch (typical for "master") instead of an actual connection through tracking brnaches.
Test Plan: See comment below.
Reviewers: chad
Reviewed By: chad
Subscribers: edibiase
Maniphest Tasks: T9661
Differential Revision: https://secure.phabricator.com/D14361
Summary: Fixes T9660. The behavior for this check wasn't quite right -- we want to check the "source ref" (what we're landing) against the "target onto" (the branch we're landing it onto).
Test Plan:
- Landed from `master` (tracking origin/master). No delete.
- Landed from `feature1` (tracking local/master). Delete.
- Landed from `feature2` (tracking origin/master). Delete.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T9660
Differential Revision: https://secure.phabricator.com/D14358
Summary:
Fixes T9543. Fixes T9658. Ref T3855.
Major functional change is that you can have a sequence of branches like:
origin/master -> notmaster -> feature1
...where they track each other, but you named your local master something else. Currently, we resolve only one level of upstreams, so we try to land onto "notmaster" in this case, which is wrong.
Instead, keep resolving upstreams until we either hit a cycle, don't have another upstream to look at, or find someting in a remote. In this case we'll eventually find "origin/master" and select "origin" as the remote and "master" as the target.
Other minor changes:
- Make this selection process explicit.
- Make the help 3000x longer.
Also fix a bug where we could incorrectly try to tell Differential to update awith `--preview`.
Test Plan:
- Landed from a tag.
- Landed from a tracking branch.
- Landed from an nth-degree tracking branch.
- Tried to land from a local branch with a cycle in upstreams.
- Landed with --remote and --onto.
- Read `arc help land`.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T9658, T3855, T9543
Differential Revision: https://secure.phabricator.com/D14357
Summary:
Ref T3855. Fixes T9537. Fixes T8620. Fixes T4333.
This declares bankruptcy and replaces the entire `arc land` workflow under Git. These are the notable changes:
- (T3855) You can now land from a branch to itself.
- (T3855) We now try to restore the original state very aggressively after any failure, instead of dumping you into the middle of a mess.
- (T9537) You can now land without a local branch.
- ([not actually] T9543) We'll now ignore the local branch if it just happens to be named the same thing as the remote branch but doesn't actually track it.
- (T8620) You can now land from a detached HEAD.
- (T4333) We now preserve the author and author date of whatever you land.
This may need some followup work. In particular:
- The signal handler (that tries to put you in a better place if you ^C in the middle of things) causes ^C to work awkwardly in prompts. This might not be worth it.
- Errors/instructions on push/merge issues might need work.
- I dropped support for `--delete-remote` and `--update-with-blah-blah` because I think these flags aren't worth their complexity.
- I've simplified the update/merge algorithm a bit. It may need some complexity added back in.
- I probably missed a few things because this covers like 200 unique, creative workflows.
- Users might need more guidance on the workflows that drop them in the middle of nowhere if they manage to reach them more often than I think.
Test Plan:
- Used `arc land` to land like at least 15,000 different kinds of changes.
- Landed normally.
- Landed from a branch onto itself.
- Landed from a detached head.
- Landed nothing.
- Landed with no local branch.
- Landed onto made-up branches.
- Landed with bad targets.
- ^C'd things in the middle.
Reviewers: chad
Reviewed By: chad
Subscribers: tycho.tatitscheff
Maniphest Tasks: T3855, T4333, T8620, T9537, T9543
Differential Revision: https://secure.phabricator.com/D14356
