rebase: update working directory when aborting (issue5084)

tests/failfilemerge.py

@@ -0,0 +1,18
+# extension to emulate interupting filemerge._filemerge
+
+from __future__ import absolute_import
+
+from mercurial import (
+    filemerge,
+    extensions,
+    error,
+)
+
+def failfilemerge(filemergefn,
+        premerge, repo, mynode, orig, fcd, fco, fca, labels=None):
+    raise error.Abort("^C")
+    return filemergefn(premerge, repo, mynode, orig, fcd, fco, fca, labels)
+
+def extsetup(ui):
+    extensions.wrapfunction(filemerge, '_filemerge',
+                            failfilemerge)

hgext/rebase.py

@@ -975,15 +975,20 def abort(repo, originalwd, target, stat
             cleanup = False
 
         if cleanup:
-            # Update away from the rebase if necessary
-            if needupdate(repo, state):
-                merge.update(repo, originalwd, False, True)
-
-            # Strip from the first rebased revision
+            shouldupdate = False
             rebased = filter(lambda x: x >= 0 and x != target, state.values())
             if rebased:
                 strippoints = [
                         c.node()  for c in repo.set('roots(%ld)', rebased)]
+                shouldupdate = len([
+                        c.node() for c in repo.set('. & (%ld)', rebased)]) > 0
+
+            # Update away from the rebase if necessary
+            if shouldupdate or needupdate(repo, state):
+                merge.update(repo, originalwd, False, True)
+
+            # Strip from the first rebased revision
+            if rebased:
                 # no backup of rebased cset versions needed
                 repair.strip(repo.ui, repo, strippoints)
 

tests/test-rebase-abort.t

@@ -323,6 +323,78 user has somehow managed to update to a
 
   $ cd ..
 
+test aborting an interrupted series (issue5084)
+  $ hg init interrupted
+  $ cd interrupted
+  $ touch base
+  $ hg add base
+  $ hg commit -m base
+  $ touch a
+  $ hg add a
+  $ hg commit -m a
+  $ echo 1 > a
+  $ hg commit -m 1
+  $ touch b
+  $ hg add b
+  $ hg commit -m b
+  $ echo 2 >> a
+  $ hg commit -m c
+  $ touch d
+  $ hg add d
+  $ hg commit -m d
+  $ hg co -q 1
+  $ hg rm a
+  $ hg commit -m no-a
+  created new head
+  $ hg co 0
+  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg log -G --template "{rev} {desc} {bookmarks}"
+  o  6 no-a
+  |
+  | o  5 d
+  | |
+  | o  4 c
+  | |
+  | o  3 b
+  | |
+  | o  2 1
+  |/
+  o  1 a
+  |
+  @  0 base
+  
+  $ hg --config extensions.n=$TESTDIR/failfilemerge.py rebase -s 3 -d tip
+  rebasing 3:3a71550954f1 "b"
+  rebasing 4:e80b69427d80 "c"
+  abort: ^C
+  [255]
+  $ hg rebase --abort
+  saved backup bundle to $TESTTMP/interrupted/.hg/strip-backup/3d8812cf300d-93041a90-backup.hg (glob)
+  rebase aborted
+  $ hg log -G --template "{rev} {desc} {bookmarks}"
+  o  6 no-a
+  |
+  | o  5 d
+  | |
+  | o  4 c
+  | |
+  | o  3 b
+  | |
+  | o  2 1
+  |/
+  o  1 a
+  |
+  @  0 base
+  
+  $ hg summary
+  parent: 0:df4f53cec30a 
+   base
+  branch: default
+  commit: (clean)
+  update: 6 new changesets (update)
+  phases: 7 draft
+
+  $ cd ..
 On the other hand, make sure we *do* clobber changes whenever we
 haven't somehow managed to update the repo to a different revision
 during a rebase (issue4661)