Summary:
See T5690.
-arc land now respects tracked branch when choosing 'onto'; '--onto' option remains as an override.
-arc land now respects tracked branch when choosing a remote; the remote is taken from 'onto's upstream unless the '--remote' option is present; when 'onto' branch has no upstream the '--remote' option must be provided as before.
Since 'arc feature' branches are (already) created as tracking branches, 'arc.land.onto.default' if present, is only used as the default when a non-tracking branch created by some other means is landed with out explicit '--onto'. This may be surprising but is probably the correct go-forward behavior and is inline with the description in T5690.
Test Plan:
-checked having no arc.land.onto.default still assumes 'master'
-checked 'arc.land.onto.default' still overrides 'master'
-checked upstream branch (of feature branch) overrides 'master' and 'arc.land.onto.default'
-checked '--onto' overrides all
-checked origin is default for non-tracking branches
-checked the land onto branch's upstream remote is used instead of 'origin'
-checked '--remote' overrides 'origin' and the tracked upstream
-tested several crazy branch names including 'something/like/this' for both the upstream and tracking branches
-tested on linux and OS X
-rinse and repeat on Windows
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: epriestley, Korvin
Maniphest Tasks: T5690
Differential Revision: https://secure.phabricator.com/D10058
Summary:
Ref T5655. It is superfluous to include "base" in the name of an abstract base class. Furthermore, it is not done consistently within the code base.
In order to retain compatibility with external code, I have kept the `ArcanistBaseWorkflow` class (which trivially extends from `ArcanistWorkflow`), but it is now deprecated and should output a warning message. Similarly for `ArcanistBaseUnitTestEngine`.
Test Plan: Created a workflow which extends from `ArcanistBaseWorkflow`. Executed the workflow and saw a deprecation warning.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley, Korvin, aurelijus
Maniphest Tasks: T5655
Differential Revision: https://secure.phabricator.com/D9983
Summary: I'm pretty sure that `@group` annotations are useless now... I believe that they were originally used by Diviner?
Test Plan: Eye-balled it.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: epriestley, Korvin, aurelijus
Differential Revision: https://secure.phabricator.com/D9855
Summary: Applied various linter fixes. Also make the `.editorconfig` file a bit more specific. Unfortunately, `arc lint --apply-patches` currently modifies some test data that it shouldn't, but this should be fixed after T5105.
Test Plan: Ran `arc unit` to make sure things weren't broken.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: epriestley, Korvin, aurelijus
Differential Revision: https://secure.phabricator.com/D9440
Summary: Ran `arc lint --apply-patches --everything` over rARC, mainly to change double quotes to single quotes where appropriate. These changes also validate that the `ArcanistXHPASTLinter::LINT_DOUBLE_QUOTE` rule is working as expected.
Test Plan: Eyeballed //most// of the diff.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: epriestley, Korvin, aurelijus
Differential Revision: https://secure.phabricator.com/D9269
Summary:
This is all derped up, and we ignore the error so old installs don't break.
Underp it.
Test Plan: Did `arc land`, verified that the call actually went through successfully.
Reviewers: btrahan, davedash
Reviewed By: davedash
Subscribers: epriestley
Differential Revision: https://secure.phabricator.com/D9271
Summary: Handles an issue in windows with large code bases not squash merging correctly, this only catches the issue it doesn't really do any recovery.
Test Plan: We have been running this change in our work environment, it's a hard bug to replicate but when it has reared it's head this has caught it.
Reviewers: waynea, #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley, Korvin, hach-que
Maniphest Tasks: T4884
Differential Revision: https://secure.phabricator.com/D8729
Summary: This string is quite silly!
Test Plan: `arc land --hold` in an affected working copy.
Reviewers: btrahan, chad
Reviewed By: chad
Subscribers: epriestley
Differential Revision: https://secure.phabricator.com/D9212
Summary: Contine is not a word methinks.
Test Plan: looks better
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: epriestley, Korvin
Differential Revision: https://secure.phabricator.com/D8997
Summary:
Fixes T4809. When landing a revision, check for a (non-manual) buildable of the current diff. If we find one, check its status:
- If it passed, print out a message to inform the user that we checked.
- If it failed or is still building, print out details about the issue and require a confirmation to continue.
- Just ignore other cases.
Test Plan:
- Ran `arc land` on a revision with no buildable, a passing buildable, a failed buildable, and a building buildable for the current diff.
- Got sensible output / prompts.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T4809
Differential Revision: https://secure.phabricator.com/D8801
Summary: Fixes T4605. Smart waits (see D8782) are presumably good on the balance, but may cause some delays when changes are made to rarely updated repositories. To help mitigate this, have `arc land` hint that a repository has changed.
Test Plan: Will run `arc land`.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T4605
Differential Revision: https://secure.phabricator.com/D8783
Summary: Fixes T4291. Also pht user-facing strings.
Test Plan:
made a branch `foo` off master. made a commit and a diff in `foo`. switched backed to master and cowboy committed some thing. went back to branch`foo`, did an arc land, and saw the error message. went back to master, did a git resert --hard HEAD^1, went back to branch `foo`, and then successfully arc landed.
also ran arc help land and things looked good
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: epriestley, Korvin
Maniphest Tasks: T4291
Differential Revision: https://secure.phabricator.com/D8738
Summary: Ref T4670.
Test Plan: arc patch D8685; arc land --hold; verified i got a nice message asking me to be sure i wanted to land epriestley's code
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: epriestley, Korvin
Maniphest Tasks: T4670
Differential Revision: https://secure.phabricator.com/D8709
Summary:
pretty straight-forward stuff here. Note that in other events we use "fields" or "specification" rather than "revision"; I think "revision" is best particularly in this context where it is in fact the revision being landed.
Fixes T4565.
Test Plan: php -l
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: aran, epriestley, Korvin
Maniphest Tasks: T4565
Differential Revision: https://secure.phabricator.com/D8484
Summary: Fixes T3929. If arc is merging it will say merging * into * vs always saying rebasing * onto *
Test Plan: Make arc do a rebase, then a merge
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley
CC: Korvin, epriestley, aran
Maniphest Tasks: T3929
Differential Revision: https://secure.phabricator.com/D8085
Summary:
Create a new class for them, pass instance around as need.
This looks like it's mostly working, but I'd like to replace the various `new ArcanistConfigurationManager()`
calls with something more suitable.
And maybe get a better name for ArcanistConfigurationManager ("Configuration" is already taken).
Test Plan: arc unit --everything, and then some.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley
CC: Korvin, epriestley, aran, chad
Differential Revision: https://secure.phabricator.com/D7271
Summary:
Make sure on failure (restoreBranch()) we call `git submodule update --init --recursive` to handle all those purdy submodules. For the pushing step, wrap the push commands in the try / catch block so everything gets cleaned up nice if there's failure. BONUS - add --recursive to arc patch workflow to so nested submodules work correctly. (Crazy git users)
Fixes T3407, T2945.
Test Plan: I wasn't sure how to simulate a good "push" failure but I think this should work.
Reviewers: epriestley
Reviewed By: epriestley
CC: Korvin, aran
Maniphest Tasks: T2945, T3407
Differential Revision: https://secure.phabricator.com/D6885
Summary:
arc for mercurial on windows was broken in several way.
Executing a command via passthru failed because passthru on windows
skips the shell so 'set HGPLAIN=1 & ...' was an invalid command. The
fix was to just not set HGPLAIN for passthru commands on windows.
Also removed hardcoded '' quotes in mercurial commands since windows
doesn't support single quots.
Test Plan: arc land --hold on a windows machine
Reviewers: epriestley
Reviewed By: epriestley
CC: Korvin, aran
Differential Revision: https://secure.phabricator.com/D6763
Summary:
During my attept to `arc land master` on `master` branch
I have discovered that error message is missing few spaces between words.
I have added them and used this ugly readonly command:
pcregrep --include="\.php$" -M -r '(?<!\\n| )("|'"'"')\.\n\s*\1(?!\\n| )' ~/arc/arcanist/src
to detect other instances of this serious bug.
Two more were found.
This time they were probably introduced in order to abide
to the draconian lint rule about number of columns.
Since I want to be a good citizen,
I have added this missing space to the begining of the next line in both cases.
It is an ugly hack, but I think user should not suffer due to missing spaces.
Another solution could be preserving no leading spaces and splitting long lines.
Or just providing excuse to lint.
Test Plan: Ran `arc land master` on `master` branch.
Reviewers: epriestley, vrana
Reviewed By: epriestley
CC: aran, Korvin
Maniphest Tasks: T3008
Differential Revision: https://secure.phabricator.com/D5827
named the same as a file path.
Summary: (In fbcode and www at least, the only places I tried) if a
branch happens to be named the same as a file path (from root) (like if
a branch is called `spec` and there is a directory in `www` called
`spec`) then `arc land` will fail with git complaining that the argument
(to `git log ...`) is ambiguous as it could refer to both a path and a
revision; so this diff adds a `--` to the end so that git knows that
both are revisions and not paths.
Test Plan: Try and land something from www (I did, see D752219) where
the branch is named `spec`.
Reviewed by: epriestley
Summary:
This adds a arcconfig setting to allow specifying whether to use the merge
or rebase strategy when doing the feature branch update.
arc.land.update.default can be set to either 'rebase' or 'merge'. The command
line flags will override this setting.
We have had trouble with arc land producing merge commits (introduced
with D4080) in git. They usually appear when arc land fails, and our users
are confused by the presence of a merge commit afterwards. Today it got even
worse since a user managed to get arc land to push the merge commit to the
server. This setting will allow us to turn it off for our uses.
Test Plan:
Verified the following combinations:
update.default not set + arc land (saw git merge in the trace)
update.default = 'rebase' + arc land (saw git rebase)
update.default = 'merge' + arc land (saw git merge)
update.default = 'rebase' + arc land --update-with-merge (saw git merge)
update.default = 'merge' + arc land --update-with-rebase (saw git rebase)
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D5683
Summary:
Arc land is a bit magical and some users have gotten bitten by
the fact that it collapses and lands every commit on the branch. To make
it explicit what is being landed, it now shows a list of the commits
that are being landed. I also added a --preview flag that will just
print the commits that would be landed, but does nothing else.
Hopefully this make arc land a little less magical for people.
Test Plan:
arc land in the following scenarios:
- Landing one change
- Landing no changes
- Landing a stack of changes
Did it with hg and git.
Reviewers: epriestley
Reviewed By: epriestley
CC: nh, sid0, dschleimer, bos, aran, Korvin
Differential Revision: https://secure.phabricator.com/D5460
Summary:
Adds error handling for several kinds of failure in arc land for
mercurial. Previously it would often leave the repo in a confusing state
if something failed.
- Aborts the land if pull brings in a diverged 'onto' branch.
- Aborts the rebase if there is a conflict. This leaves the repo exactly as
it was before, so the user is not left with a half finished rebase.
- Don't delete the original non-squashed branch until the push succeeds.
- If the push fails, strip the temporary squashed commit. This leaves the
'onto' branch back on the latest commit from the server, and leaves the users
original nonsquashed branch around.
- Always leave the user back on their original branch after an error.
Test Plan:
Ran arc land:
- with pull causing a diverged 'onto' bookmark
- with the 'onto' bookmark already diverged
- with the rebase causing conflicts
- with a push that failed due to a commit hook
- with a successful land
- with a successful collapse and land
In all failure cases the repo was left exactly as it was before arc land,
except for the push-failed case, where the only change was that the branch
was correctly on top of the destination branch due to a successful rebase.
Used bookmark name "foo bar-gah" to test that crazy bookmark names still work.
Reviewers: epriestley, dschleimer, sid0
Reviewed By: epriestley
CC: nh, wez, bos, aran, Korvin
Differential Revision: https://secure.phabricator.com/D5394
Summary: I looked at the pros & cons at adding hooks in git/hg vs arc land and I prefer arc land.
Test Plan:
* added an event listener and made sure I could handle the event.
* made sure things get reverted when the event handler throws an exception.
Reviewers: vrana, epriestley, pieter
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D5268
Summary: The message suggests that only one revision would land.
Test Plan: Read it.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D5277
Summary: Have arc land inspect the revision if it depends on some other revisions which haven't been closed yet. If yes, then warn users.
Test Plan: Will test them locally.
Reviewers: epriestley, AnhNhan
CC: aran, Korvin, AnhNhan
Differential Revision: https://secure.phabricator.com/D5262
Summary: Changes message for `arc land` that displays current branch or bookmark (if none is specified) to appropriately use the term 'bookmark' when on a bookmark in an hg repository.
Test Plan:
Ran `arc land` on new git and hg repositories, checking for correct identification of 'branch' or 'bookmark'.
~/test$ mkdir hg-test
~/test$ mkdir git-test
~/test$ cd hg-test
~/test/hg-test$ hg init
~/test/hg-test$ hg branch
default
~/test/hg-test$ hg bookmarks
no bookmarks set
~/test/hg-test$ arc land
Landing current branch 'default'.
Usage Exception: You can not land a branch onto itself -- you are trying to land 'default' onto 'default'. For more information on how to push changes, see 'Pushing and Closing Revisions' in 'Arcanist User Guide: arc diff' in the documentation. You may be able to 'arc amend' instead.
~/test/hg-test$ hg bookmark testmark
~/test/hg-test$ hg bookmarks
* testmark -1:000000000000
~/test/hg-test$ hg branch
default
~/test/hg-test$ arc land
Landing current bookmark 'testmark'.
Usage Exception: Source testmark is a bookmark but destination default is not a bookmark. When landing a bookmark, the destination must also be a bookmark. Use --onto to specify a bookmark, or set arc.land.onto.default in .arcconfig.
Confirm still works on a git branch:
~/test/hg-test$ cd ../git-test/
~/test/git-test$ ls
~/test/git-test$ git init
Initialized empty Git repository in ~/test/git-test/.git/
~/test/git-test$ touch testfile
~/test/git-test$ git commit -am 'Test file'
~/test/git-test$ git branch
* master
~/test/git-test$ arc land
Landing current branch 'master'.
Usage Exception: You can not land a branch onto itself -- you are trying to land 'master' onto 'master'. For more information on how to push changes, see 'Pushing and Closing Revisions' in 'Arcanist User Guide: arc diff' in the documentation. You may be able to 'arc amend' instead.
Reviewers: DurhamGoode, epriestley
Reviewed By: DurhamGoode
CC: aran, epriestley, Korvin
Differential Revision: https://secure.phabricator.com/D5163
Summary:
Mercurial 'arc land --hold' was taking 90+ seconds on our large
repository. Since most of arc land doesn't require any particular working
directory, I've changed the mercurial logic to avoid all updates except for
two: the one prior to finding the revision (only applies if the user specified
--branch), and the one at the end to leave the user in a good state.
Also got rid of a 'hg outgoing' call when phases are supported. Also changed
the hg-subversion detection to just look for .hg/svn instead of running 'hg
svn info', which was taking 4 seconds.
Now arc land takes about 50 seconds. Still much worse than git's 25 seconds.
One big hot spot is in the two 'hg rebase' calls, which account for 25 seconds
(versus 11 seconds of git).
Test Plan:
Tested arc land with mercurial and git. Tested with and without the --branch
options.
Reviewers: epriestley, bos, sid0, dschleimer
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D5014
Summary:
Mercurial 'arc land' uses the 'hg strip' command to clean up after
itself, but this command isn't available unless the mq extension is enabled.
The fix is to enable it for that particular command only.
Test Plan: Ran 'arc land' with the mq extension disabled. It worked.
Reviewers: epriestley, bos, sid0, dschleimer
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D4955
Summary: `git pull` may fail in git-svn after rebasing (which is a side effect of dcommit).
Test Plan:
$ git svn rebase
$ git log trunk..master
$ git pull --ff-only; echo $?
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D4716
Summary:
arc land on a hg-svn repository would fail because arc land
uses 'hg push -r' to specify which revs to push which is not supported
by hg-svn. Now we just use 'hg push' which, when used against svn, only
pushes the current branch (which happens to be the branch we're trying to land).
We can't use standard 'hg push' for non-svn repos though because when used
against a vanilla hg repo 'hg push' pushes all branches.
Also remove --new-branch from 'hg push' because it's extremely
unlikely that a person wants to create a new branch on the server via
arc land.
Test Plan:
Ran arc land on a normal hg repo, verified it used 'hg push -r'.
Ran arc land on a hg-svn repo, verified it used 'hg push' and it pushed the
correct changes.
Reviewers: epriestley, sid0, dschleimer
Reviewed By: epriestley
CC: bos, aran, Korvin
Maniphest Tasks: T2403
Differential Revision: https://secure.phabricator.com/D4653
Summary:
Previously, trying to arc land in a mercurial repo would
fail if the local branch was already at the tip of the onto branch
(since hg rebase exited with code 1). This change makes it check
if a rebase is needed before executing the rebase.
Test Plan:
hg init foo
cd foo
hg bookmark master
touch a && hg add a && hg commit -ma
// setup your .arcconfig
cd ..
hg clone foo foo2
cd foo2
hg bookmark mybook
touch b && hg add b && hg commit -mb
arc land --onto master --revision <your rev number>
Arc land should succeed. I also tried landing when a rebase was
necessary and it still worked.
Reviewers: epriestley, dschleimer, bos
Reviewed By: epriestley
CC: sid0, aran, Korvin
Differential Revision: https://secure.phabricator.com/D4588
Summary:
Fixes T2138.
- When a pull fails, restore the original branch.
- When a push fails, complain about it really loudly.
NOTE: No test plan for push yet since I'm not sure this is the right remedy, see T2138 for discsusion.
Test Plan:
- Tested pull by changing "git pull" to "git xxpull" and running "arc land". Saw the pull fail and my original branch restored.
Reviewers: vrana, aran
Reviewed By: vrana
Maniphest Tasks: T2138
Differential Revision: https://secure.phabricator.com/D4265
Summary:
See D4049, D4096.
- Move commit range storage from Mercurial and Git APIs to the base API.
- Move caching up to the base level.
- Store symbolic name and resolved name separately, so we can re-resolve the correct commit from the symbolic name after dirtying caches.
- Rename `supportsRelativeLocalCommit()` to `supportsCommitRanges()` (old name wasn't very good, and not consistent with new terminology like the `--base` flag).
- Rename `getRelativeCommit()` and `setRelativeCommit()` to `getBaseCommit()` and `setBaseCommit()`.
- Introduce `reloadCommitRange()` and call it from `reloadWorkingCopy()`.
I think this fixes the problem in D4049, and provides a general solution for the class of problems we're running into here, with D4096. Specifically:
- We no longer get dirty caches, as long as you call reloadWorkingCopy() after changing the working copy (or call a method which calls it for you).
- We no longer get order-of-parsing-things problems, because setBaseCommit() reloads the appropriate caches.
- We no longer get nasty effects from calling `requireCleanWorkingCopy()` too early.
Test Plan: This is pretty far-reaching and hard to test. Unit tests; ran various arc commands. :/
Reviewers: vrana
Reviewed By: vrana
CC: aran
Differential Revision: https://secure.phabricator.com/D4097
Summary:
This changes arc land's hg support to allow you to land a branch or bookmark that has nested branches/bookmarks. Example:
// Initial state:
// -a--------b master
// \
// w--x mybranch
// \--y subbranch1
// \--z subbranch2
//
// arc land --branch mybranch --onto master :
// -a--b--wx master
// \--y subbranch1
// \--z subbranch2
Test Plan:
Created several repos like in the summary and ran 'arc land' and 'arc land --keep-branch'. Did this with both bookmarks and named branches. Scenarios tested:
- mybranch having no child commits
- mybranch having a child branch with several commits
- mybranch having two child branches
- mybranch having a child branch which has two more child branches
No code was added outside of a "if ($this->isHg)" so I didn't run git arc land.
Reviewers: epriestley, dschleimer, bos, sid0
Reviewed By: dschleimer
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D4089
Summary:
See chatlog from https://secure.phabricator.com/chatlog/channel/%23phabricator/?at=37257
Basically, the install's developers sometimes use "git merge master" instead of "git rebase master" to pull changes from master into their branch. When we run "git rebase master" at the end, this creates a lot of conflicts.
Instead, optionally run "git merge master". This should be equivalent in our case (where we always rebase) and much better in their case (where they sometimes merge).
We're both going to use it for a bit and see if it creates problems. If it improves the "sometimes-merge" workflow without affecting the "always rebase" workflow, we can make it a default. If it improves theirs but damages ours, we can keep it a flag/option. If it's just terrible, we can figure out something else.
Test Plan:
Ran `arc land --mergeup --trace <feature> --keep-branch --hold`, see P624 for output. Observed merge update strategy and general success.
Also verified the conflict:
$ arc land --mergeup --merge
Usage Exception: Arguments '--mergeup' and '--merge' are mutually exclusive: The --merge strategy does not update the feature branch.
Reviewers: btrahan, vrana, DurhamGoode
Reviewed By: btrahan
CC: aran, keir
Differential Revision: https://secure.phabricator.com/D4080
Summary:
Makes arc land support hg repositories. Both bookmarks and named branches can be landed. For the most part all the arc land options work, but there are a few caveats:
- bookmarks can only be landed on bookmarks
- branches can only be landed on branches
- landing a named branch with --merge creates a commit to close the branch before the merge.
- since mercurial doesn't start with a default master bookmark, landing a bookmark requires specifying --onto or setting arc.land.onto.default
Test Plan:
Tested arc land with all permutations of --merge, --keep-branch on both bookmark branches and named branches. Also tested --hold, --revision, --onto, --remote.
See https://secure.phabricator.com/P619
Also tested git arc land with --merge and --keep-branch.
Reviewers: dschleimer, sid0, epriestley, bos
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D4068
Summary:
See discussion in D4056. In `findRevision()` we call `loadWorkingCopyDifferentialRevisions()`. However, this method depends upon the state of the working copy, because the end of the commit range it examines is HEAD. Prior to D4056 we checked out the target branch before calling `findRevision()`; after D4056 we call it earlier.
This isn't problematic in the `arc land` case, but in the `arc land <branch>` case it means we may fail to identify a revision, or identify the wrong revision, because HEAD isn't where we expect it to be.
Instead, unconditionally check out the target branch before finding the revision.
See <http://dl.dropbox.com/u/116385/Slingshot/Pictures/Screen%20Shot%202012-12-03%20at%203.43.45%20PM.png> for a transcript of the issue.
Test Plan: Reproduced issue as per link above. Ran `arc land --keep-branch --hold somebranch` successfully after this patch.
Reviewers: DurhamGoode, zeeg
Reviewed By: DurhamGoode
CC: aran
Differential Revision: https://secure.phabricator.com/D4072
Summary:
Refactor the arc land code into several
functions so it's easier to maintain. This is in
preparation for adding hg support to arc land
in my next commit.
Without this refactor, adding hg support makes the run()
function too big.
Test Plan:
Set up a git repo and clone with a branch scenario.
Example: https://secure.phabricator.com/P614
Ran and verified:
arc land
arc land --keep-branch
arc land --merge
arc land --merge --keep-branch
arc land --hold
arc land --revision <another phabricator rev>
Reviewers: epriestley
Reviewed By: epriestley
CC: dschleimer, sid0, aran, Korvin
Differential Revision: https://secure.phabricator.com/D4056
