Using a temp file for git commit --amend instead of passing multi-line message to the shell. Avoids escaping issue on windows.

Test Plan: Run arc diff locally, verify via git log that the commit is amended afterwards (using the mutable history paradigm)

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Koolvin

Differential Revision: https://secure.phabricator.com/D2369
Fix "HGPLAIN" environmental variable in Windows

Summary: In Windows, you can't use `X=y cmd` syntax to set variables. Use "set X=y & cmd" instead.

Test Plan:
  - Ran "arc diff" in a Mercurial repo in Windows, created D2367.
  - Verified this does //not// cause 'HGPLAIN' to be set in the outer shell (where you type "arc diff").

Reviewers: Makinde, tido, indiefan, btrahan

Reviewed By: tido

CC: aran

Maniphest Tasks: T1179

Differential Revision: https://secure.phabricator.com/D2368
Updated arc land workflow to use temp file approach for messages to avoid newline escaping issue in windows.

Test Plan: Ran arc land locally with both the mutable default option and with the --merge flag to ensure that messages are set properly.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Koolvin

Differential Revision: https://secure.phabricator.com/D2372
Warn before parse errors in `arc diff --verbatim`

Summary: With `--verbatim` flag, notes created from parse errors are never displayed to user resulting in blank fields.

Test Plan:
- `arc diff --verbatim` with invalid Cc
- `arc diff --verbatim` with all fields correct

Reviewers: epriestley, jungejason

Reviewed By: epriestley

CC: aran, Koolvin

Differential Revision: https://secure.phabricator.com/D2395
Don't ask user to use saved message in `arc diff --verbatim`

Test Plan:
Cancel `arc diff`.
Verify that the message is created.
Run `arc diff --verbatim` and see no reuse message question.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Koolvin

Differential Revision: https://secure.phabricator.com/D2390
Document first line behavior in update message

Test Plan: (This diff)

Reviewers: epriestley, jungejason

Reviewed By: jungejason

CC: aran, Koolvin

Differential Revision: https://secure.phabricator.com/D2389
Clean up some "arc" edge cases in Mercurial

Summary:
  - We no longer need color options since we fake our way through parsing ANSI colorized diffs and use HGPLAIN (on Windows, too!). Drop 'em.
  - In the case where you have nothing outgoing, we don't cache the relative commit and thus run "hg outgoing" too many times, which is fairly slow (even if you have nothing outgoing). Cache it.

Test Plan: Ran "arc diff --trace" in a mercurial working copy with nothing outgoing; verified we run "hg outgoing" only once.

Reviewers: Makinde, csilvers, btrahan

Reviewed By: Makinde

CC: aran

Differential Revision: https://secure.phabricator.com/D2399
Explicitly check for cURL in "arc"

Summary: We do this in Windows, but it's not available by default in Ubuntu

Test Plan: Ran "arc" after faking the function name, got a reasonable error.

Reviewers: btrahan, jungejason

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D2404
Remove git commit template from Arcanist

Summary: Out of date an no longer referenced.

Test Plan: Grepped for references.

Reviewers: btrahan, vrana

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D2387
Add "arc get-config" and "arc set-config" for managing ~/.arcrc values

Summary:
The major thing I want to do here is allow you to set a default Phabricator URI, so we can make "arc paste", and "arc upload", "arc download" work anywhere.

We can also relax the .arcconfig requirements (request from @csilvers).

Test Plan:
Get/set some values?

iiam

Reviewers: btrahan, vrana, jungejason

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D2400
Finish "Committed" -> "Closed" changes

Summary:
Clean up the remaining odds-and-ends here -- move to "differential.close", get rid of the old constant, etc.

I'll wait a week or two to land this since "differential.close" just landed and all the other stuff is trivial.

Test Plan: Grepped for "committed".

Reviewers: btrahan, vrana, Makinde

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T909, T1182

Differential Revision: https://secure.phabricator.com/D2309
With `--verbatim`, update some fields automatically when updating revisions

Summary:
Essentially D2391, but with, uh, more comments?

  - I forgot that we already implemented shouldOverwriteWhenCommitMessageIsEdited(). This patch already behaves nearly correctly.
  - Requires changes in D2412.
  - Use `'edit' => 'edit'`, which does the same thing as `'edit' => true`, but is more correct after the "edit" / "create" split.
  - Under "--verbatim", always get the message "from the user", which means "from the working copy" because verbtatim disables the editor part.

Test Plan:
      - Created and updated revisions with `arc diff`.
      - Created and updated revisions with `arc diff --verbatim`.
      - Updated revisions with `arc diff --edit`.

Reviewers: jungejason, btrahan

Reviewed By: jungejason

CC: vrana, aran

Differential Revision: https://secure.phabricator.com/D2411
Always use git.default-relative-commit, if present

Summary:
Always use the value in git.default-relative-commit when getting the relative
commit in git.

Test Plan:
Ran arc diff in a repo with git.default-relative-commit set to HEAD^ on a
branch tracking a remote (that is different from HEAD^), and checked that
the diff against HEAD^, not the remote, was published.

Reviewers: jungejason, epriestley, vrana

Reviewed By: epriestley

CC: aran, Koolvin

Differential Revision: https://secure.phabricator.com/D2409
Provide more context in "arc diff" messages in Git

Summary: These are the unambiguously-good changes from D2388. Show commits included in a revision in the editor in "arc diff".

Test Plan: Ran "arc diff", saw which commits were being included.

Reviewers: nh, jungejason, vrana, btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T1183

Differential Revision: https://secure.phabricator.com/D2406
Allow 'arc' to run without '.arcconfig'

Summary:
This is mostly an onboarding thing, but also allows "arc upload", "arc download", and "arc paste" to work anywhere on the system.

  - Try to read the Phabricator install URI from arc global config if we can't find ".arcconfig".
  - Build a WorkingCopy anyway if we can't find ".arcconfig", as long as we can find ".svn", ".git", or ".hg".
  - Make all the workflows handle "no project ID" at least somewhat gracefully.

Test Plan:
  - Ran "arc diff" in .arcconfig-less Mercurial, Git, and Subversion working copies.
  - Ran "arc upload" and "arc download" from my desktop.
  - Ran "arc paste" from somewhere random.
  - Cleared my config and hit the error, got useful instructions.

Reviewers: btrahan, csilvers

Reviewed By: csilvers

CC: aran

Differential Revision: https://secure.phabricator.com/D2424
Allow --verbatim and -m in arc diff

Summary:
There's no reason these should be exclusive: -m is used only on update for the
update message, and --verbatim doesn't affect the udpate message. It's also
useful to allow both of these, if say I want to update my test plan by editing
my git commit message and also provide a message for the update from the
command line.

Test Plan:
ran arc diff with --verbatim and -m and saw my message from -m was used, as
well as my updates in the commit message went through.

Reviewers: jungejason, epriestley, vrana

Reviewed By: epriestley

CC: aran, Koolvin

Differential Revision: https://secure.phabricator.com/D2426
Catch ArcanistUsageException when getting git parent log info

Summary:
ArcanistDiffWorkflow::getGitParentLogInfo() calls
ArcanistDifferentialCommitMessage::newFromRawCorpus() which may throw a
ArcanistUsageException if the parent commit message is malformed (specifically,
a bad "Differential Revision:" line); this should not stop arc diff.

Test Plan: successfully ran arc diff where the parent commit message was malformed.

Reviewers: epriestley, jungejason

Reviewed By: epriestley

CC: aran, Koolvin

Differential Revision: https://secure.phabricator.com/D2434
"arc upgrade", to automatically upgrade arc (client changes)

Summary:
  - Try to limit the pain of //future// version bumps by making arc self-updating.
  - When the server needs a newer version, prompt the user to update.
  - (We need them to reissue their command because we may already have loaded classes which have changed in the update.)
  - Make the message sound exciting!

Test Plan: Artifically bumped server forward, ran "arc list", got to upgrade!

Reviewers: Makinde, nh, jungejason, btrahan

Reviewed By: nh

CC: aran

Differential Revision: https://secure.phabricator.com/D2435
Ship complete commit messages to Phabricator from Arcanist

Summary: Currently, we ship only the summary, but we need to ship the whole thing for T1189.

Test Plan: Added var_dump() + die, ran in git and hg working copies, verified 'message' included the whole message.

Reviewers: csilvers, btrahan, Makinde

Reviewed By: csilvers

CC: aran

Maniphest Tasks: T1189

Differential Revision: https://secure.phabricator.com/D2437
Fix 'rev' index error for Mercurial

Summary: I renamed this in D2437 for greater consistency with everything else, but missed this use of the old key.

Test Plan: idk lmk?

Reviewers: Makinde

Reviewed By: Makinde

CC: aran

Differential Revision: https://secure.phabricator.com/D2452