[PATCH 04 of 13] rebase: don't try to prune obsolete changeset already in the destination

[Boris Feld]

# HG changeset patch
# User Boris Feld <boris.feld at octobus.net>
# Date 1537992328 -7200
#      Wed Sep 26 22:05:28 2018 +0200
# Node ID f70aad5388994c9dd8f1b6f814ed648252c378a0
# Parent  b425c3186b916eef5e315962fb73491f046e10bf
# EXP-Topic trackfold
# Available At https://bitbucket.org/octobus/mercurial-devel/
#              hg pull https://bitbucket.org/octobus/mercurial-devel/ -r f70aad538899
rebase: don't try to prune obsolete changeset already in the destination

With similar motivations to the previous changesets, we stop marking changeset
from pruning when it is not the command intention. In this case, we still need
to distinguish between the strip and the obsolete case.

diff --git a/hgext/rebase.py b/hgext/rebase.py
--- a/hgext/rebase.py
+++ b/hgext/rebase.py
@@ -1763,17 +1763,21 @@ def clearrebased(ui, repo, destmap, stat
     tonode = repo.changelog.node
     replacements = {}
     moves = {}
+    stripcleanup = not obsolete.isenabled(repo, obsolete.createmarkersopt)
     for rev, newrev in sorted(state.items()):
         if newrev >= 0 and newrev != rev:
             oldnode = tonode(rev)
             newnode = collapsedas or tonode(newrev)
             moves[oldnode] = newnode
             if not keepf:
+                succs = None
                 if rev in skipped:
-                    succs = ()
+                    if stripcleanup or not repo[rev].obsolete():
+                        succs = ()
                 else:
                     succs = (newnode,)
-                replacements[oldnode] = succs
+                if succs is not None:
+                    replacements[oldnode] = succs
     scmutil.cleanupnodes(repo, replacements, 'rebase', moves, backup=backup)
     if fm:
         hf = fm.hexfunc