D6567: abort: added support for graft

[taapas1128 (Taapas Agrawal)]

taapas1128 added inline comments.

INLINE COMMENTS

> pulkit wrote in commands.py:2738
> Directly calling `_abortgraft` is not safe. `graft --abort` takes wlock first and then calls it. We skipped taking the lock in case of `hg abort`.

@pulkit the wlock is activated later in `graft --abort` during cleanup. That is same in the case of `hg abort`

> pulkit wrote in test-abort.t:2
> I think we can use cases functionality in existing tests to test `hg abort`.
> 
> I mean, in one case alias `abort` to `graft --abort` and in other case it will be the normal abort command. That will help us to prevent duplicating tests and making sure in future things work for both the cases.

I will alias this later if you want once the code for this is finalized. this is only a portion of tests taken and tests for `no-backup` and `dry-run` are added.

REPOSITORY
  rHG Mercurial

CHANGES SINCE LAST ACTION
  https://phab.mercurial-scm.org/D6567/new/

REVISION DETAIL
  https://phab.mercurial-scm.org/D6567

To: taapas1128, #hg-reviewers
Cc: pulkit, mercurial-devel