[PATCH 2 of 6] rebase: do not retract phase boundary by hand

[pierre-yves.david at ens-lyon.org]

# HG changeset patch
# User Pierre-Yves David <pierre-yves.david at fb.com>
# Date 1407270164 25200
#      Tue Aug 05 13:22:44 2014 -0700
# Node ID 78b7329fcb845f6c2603104a688ead6ef4f88c77
# Parent  a0abbd44e930bd673c088f8412c46efc1d0b442a
rebase: do not retract phase boundary by hand.

We rely on the internal mechanism to commit the changeset in the right phase.
This similar to what the mq extension is doing.

This is an important change as we plan to includes phases movement within the
transaction. Avoiding phase movement from high level code will avoid them the
burden of transaction handling. It is also important to limit the need for
transaction handling as this limit the odds of people messing up. Most common
expected mess up is code using a different transaction for changesets creation
and phase adjustment.

diff --git a/hgext/rebase.py b/hgext/rebase.py
--- a/hgext/rebase.py
+++ b/hgext/rebase.py
@@ -466,19 +466,22 @@ def concludenode(repo, rev, p1, p2, comm
         if commitmsg is None:
             commitmsg = ctx.description()
         extra = {'rebase_source': ctx.hex()}
         if extrafn:
             extrafn(ctx, extra)
-        # Commit might fail if unresolved files exist
-        newrev = repo.commit(text=commitmsg, user=ctx.user(),
-                             date=ctx.date(), extra=extra, editor=editor)
+
+        backup = repo.ui.backupconfig('phases', 'new-commit')
+        try:
+            targetphase = max(ctx.phase(), phases.draft)
+            repo.ui.setconfig('phases', 'new-commit', targetphase, 'rebase')
+            # Commit might fail if unresolved files exist
+            newrev = repo.commit(text=commitmsg, user=ctx.user(),
+                                 date=ctx.date(), extra=extra, editor=editor)
+        finally:
+            repo.ui.restoreconfig(backup)
+
         repo.dirstate.setbranch(repo[newrev].branch())
-        targetphase = max(ctx.phase(), phases.draft)
-        # retractboundary doesn't overwrite upper phase inherited from parent
-        newnode = repo[newrev].node()
-        if newnode:
-            phases.retractboundary(repo, targetphase, [newnode])
         return newrev
     except util.Abort:
         # Invalidate the previous setparents
         repo.dirstate.invalidate()
         raise