abort: added support for rebase

This adds support of `rebase` to `hg abort` plan.

An independent abort logic for `rebase` is created
under `abortrebase()` function. For this a seperate
`rebaseruntime` object is created under the function to
handle an unfinished `rebasestate` and abort that using
abort logic under `_prepareabortorcontinue`.

Results of tests are shown.

Differential Revision: https://phab.mercurial-scm.org/D6568

hgext/rebase.py

@@ -1923,6 +1923,11 b' def _computeobsoletenotrebased(repo, reb'
         obsoleteextinctsuccessors,
     )
 
+def abortrebase(ui, repo):
+    with repo.wlock(), repo.lock():
+        rbsrt = rebaseruntime(repo, ui)
+        rbsrt._prepareabortorcontinue(isabort=True)
+
 def summaryhook(ui, repo):
     if not repo.vfs.exists('rebasestate'):
         return
@@ -1951,4 +1956,4 b' def uisetup(ui):'
                      _("specify merge tool for rebase")))
     cmdutil.summaryhooks.add('rebase', summaryhook)
     statemod.addunfinished('rebase', fname='rebasestate', stopflag=True,
-                            continueflag=True)
+                            continueflag=True, abortfunc=abortrebase)

tests/test-rebase-abort.t

@@ -1,3 +1,5 b''
+#testcases abortcommand abortflag
+
   $ cat >> $HGRCPATH <<EOF
   > [extensions]
   > rebase=
@@ -9,6 +11,12 b''
   > tglog = log -G --template "{rev}:{phase} '{desc}' {branches}\n"
   > EOF
 
+#if abortflag
+  $ cat >> $HGRCPATH <<EOF
+  > [alias]
+  > abort = rebase --abort
+  > EOF
+#endif
 
   $ hg init a
   $ cd a
@@ -114,7 +122,13 b' Insert unsupported mandatory merge recor'
 
 Abort (should clear out unsupported merge state):
 
-  $ hg rebase --abort
+#if abortcommand
+when in dry-run mode
+  $ hg abort --dry-run
+  rebase in progress, will be aborted
+#endif
+
+  $ hg abort
   saved backup bundle to $TESTTMP/a/.hg/strip-backup/3e046f2ecedb-6beef7d5-backup.hg
   rebase aborted
   $ hg debugmergestate
@@ -154,7 +168,7 b' earlier than 2.7 by renaming ".hg/rebase'
   [255]
   $ hg summary | grep '^rebase: '
   rebase: (use "hg rebase --abort" to clear broken state)
-  $ hg rebase --abort
+  $ hg abort
   rebase aborted (no revision is removed, only broken state is cleared)
 
   $ cd ..
@@ -271,7 +285,7 b' rebase abort should not leave working co'
   warning: conflicts while merging c! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see hg resolve, then hg rebase --continue)
   [1]
-  $ hg rebase --abort
+  $ hg abort
   rebase aborted
   $ hg log -G --template "{rev} {desc} {bookmarks}"
   @  3 C foo
@@ -324,7 +338,7 b' user has somehow managed to update to a '
 
   $ cat a
   new
-  $ hg rebase --abort
+  $ hg abort
   rebase aborted
   $ cat a
   new
@@ -405,7 +419,7 b' New operations are blocked with the corr'
   (use 'hg rebase --continue' or 'hg rebase --abort')
   [255]
 
-  $ hg rebase --abort
+  $ hg abort
   saved backup bundle to $TESTTMP/interrupted/.hg/strip-backup/3d8812cf300d-93041a90-backup.hg
   rebase aborted
   $ hg log -G --template "{rev} {desc} {bookmarks}"
@@ -456,7 +470,7 b' during a rebase (issue4661)'
   rebasing 2:e4ea5cdc9789 "conflicting 1"
   unresolved conflicts (see hg resolve, then hg rebase --continue)
   [1]
-  $ hg rebase --abort
+  $ hg abort
   rebase aborted
   $ hg summary
   parent: 3:b16646383533 tip
@@ -497,7 +511,7 b' commit will cause merge conflict on reba'
   warning: conflicts while merging root! (edit, then use 'hg resolve --mark')
   unresolved conflicts (see hg resolve, then hg rebase --continue)
   [1]
-  $ hg rebase --abort
+  $ hg abort
   rebase aborted
   $ cd ..