# HG changeset patch
# User Anton Shestakov <av6@dwimlabs.net>
# Date 1602420602 -28800
# Node ID ba8bc1b0acd2c85cff7d75f021d95c701621d2f9
# Parent  0cb1718ed95c0e835a842c11de06eb43ee522bd0
rewind: actually track folds using fold-* metadata in obsmarkers

Switching "(%d changesets obsoleted)" to using successorsmap because it's the
source of items in relationships (and the latter variable now can have less
items than before this patch).

diff -r 0cb1718ed95c -r ba8bc1b0acd2 CHANGELOG
--- a/CHANGELOG	Fri Sep 25 21:47:30 2020 -0700
+++ b/CHANGELOG	Sun Oct 11 20:50:02 2020 +0800
@@ -8,6 +8,7 @@
   * metaedit: update bookmark location when applicable
   * evolve: fix various issues with --continue when solving content-divergence
   * rewind: add a --dry-run flag
+  * rewind: properly record rewind of splits as folds
   * evolve: while resolving conflicts, the evolved node will no longer be a
     dirstate parent (won't show up in `hg parents` and not as `@` in `hg log -G`,
     but it will show up as `%` with hg >= 5.4)
diff -r 0cb1718ed95c -r ba8bc1b0acd2 hgext3rd/evolve/rewind.py
--- a/hgext3rd/evolve/rewind.py	Fri Sep 25 21:47:30 2020 -0700
+++ b/hgext3rd/evolve/rewind.py	Sun Oct 11 20:50:02 2020 +0800
@@ -10,6 +10,7 @@
     obsolete,
     obsutil,
     scmutil,
+    util,
 )
 
 from mercurial.utils import dateutil
@@ -128,6 +129,17 @@
                 relationships.append(rel)
                 if wctxp.node() == source:
                     update_target = newdest[-1]
+            # Use this condition as a proxy since the commit we care about
+            # (b99903534e06) didn't change any signatures.
+            if util.safehasattr(scmutil, 'nullrev'):
+                # hg <= 4.7 (b99903534e06)
+                destmap = util.sortdict()
+                for src, dest in relationships:
+                    destmap.setdefault(dest, []).append(src)
+                relationships = [
+                    (tuple(src), dest)
+                    for dest, src in destmap.items()
+                ]
             obsolete.createmarkers(unfi, relationships, operation=b'rewind')
             if update_target is not None:
                 if opts.get('keep'):
@@ -171,8 +183,8 @@
                     compat.update(repo[update_target])
 
     ui.status(_(b'rewound to %d changesets\n') % len(targets))
-    if relationships:
-        ui.status(_(b'(%d changesets obsoleted)\n') % len(relationships))
+    if successorsmap:
+        ui.status(_(b'(%d changesets obsoleted)\n') % len(successorsmap))
     if update_target is not None and not opts.get('keep'):
         ui.status(_(b'working directory is now at %s\n') % repo[b'.'])
 
diff -r 0cb1718ed95c -r ba8bc1b0acd2 tests/test-rewind.t
--- a/tests/test-rewind.t	Fri Sep 25 21:47:30 2020 -0700
+++ b/tests/test-rewind.t	Sun Oct 11 20:50:02 2020 +0800
@@ -596,18 +596,18 @@
   $ hg debugobsolete
   49fb7d900906b0a3d329e90da4dcb0a7582d3b6e a0316c4c54179357e71d068fb8884678ebc7c351 9576e80d6851ce79cd535e2dc5fa01b444d89a39 0 (Thu Jan 01 00:00:02 1970 +0000) {'ef1': '12', 'operation': 'split', 'user': 'test'}
   49fb7d900906b0a3d329e90da4dcb0a7582d3b6e 4535d0af405c1bf35f37b35f26ec6f9acfa6fe0b 4 (Thu Jan 01 00:00:02 1970 +0000) {'ef1': '2', 'operation': 'rewind', 'user': 'test'}
-  9576e80d6851ce79cd535e2dc5fa01b444d89a39 4535d0af405c1bf35f37b35f26ec6f9acfa6fe0b 0 (Thu Jan 01 00:00:02 1970 +0000) {'ef1': '14', 'operation': 'rewind', 'user': 'test'}
-  a0316c4c54179357e71d068fb8884678ebc7c351 4535d0af405c1bf35f37b35f26ec6f9acfa6fe0b 0 (Thu Jan 01 00:00:02 1970 +0000) {'ef1': '10', 'operation': 'rewind', 'user': 'test'}
+  9576e80d6851ce79cd535e2dc5fa01b444d89a39 4535d0af405c1bf35f37b35f26ec6f9acfa6fe0b 0 (Thu Jan 01 00:00:02 1970 +0000) {'ef1': '14', 'fold-id': 'eeda726b', 'fold-idx': '1', 'fold-size': '2', 'operation': 'rewind', 'user': 'test'}
+  a0316c4c54179357e71d068fb8884678ebc7c351 4535d0af405c1bf35f37b35f26ec6f9acfa6fe0b 0 (Thu Jan 01 00:00:02 1970 +0000) {'ef1': '10', 'fold-id': 'eeda726b', 'fold-idx': '2', 'fold-size': '2', 'operation': 'rewind', 'user': 'test'}
   $ hg obslog --no-origin
   @    4535d0af405c (6) c_CD0
   |\
   | \
   | |\
   | x |  9576e80d6851 (5) c_CD0
-  |/ /     rewritten(meta, parent, content) as 4535d0af405c using rewind by test (Thu Jan 01 00:00:02 1970 +0000)
+  |/ /     folded(meta, parent, content) as 4535d0af405c using rewind by test (Thu Jan 01 00:00:02 1970 +0000)
   | |
   | x  a0316c4c5417 (4) c_CD0
-  |/     rewritten(meta, content) as 4535d0af405c using rewind by test (Thu Jan 01 00:00:02 1970 +0000)
+  |/     folded(meta, content) as 4535d0af405c using rewind by test (Thu Jan 01 00:00:02 1970 +0000)
   |
   x  49fb7d900906 (3) c_CD0
        meta-changed(meta) as 4535d0af405c using rewind by test (Thu Jan 01 00:00:02 1970 +0000)
@@ -616,8 +616,7 @@
   $ hg obslog
   @    4535d0af405c (6) c_CD0
   |\     meta-changed(meta) from 49fb7d900906 using rewind by test (Thu Jan 01 00:00:02 1970 +0000)
-  | |    rewritten(meta, parent, content) from 9576e80d6851 using rewind by test (Thu Jan 01 00:00:02 1970 +0000)
-  | |    rewritten(meta, content) from a0316c4c5417 using rewind by test (Thu Jan 01 00:00:02 1970 +0000)
+  | |    folded(meta, parent, content) from 9576e80d6851, a0316c4c5417 using rewind by test (Thu Jan 01 00:00:02 1970 +0000)
   | |
   | \
   | |\
@@ -687,8 +686,8 @@
   $ hg debugobsolete
   49fb7d900906b0a3d329e90da4dcb0a7582d3b6e a0316c4c54179357e71d068fb8884678ebc7c351 9576e80d6851ce79cd535e2dc5fa01b444d89a39 0 (Thu Jan 01 00:00:02 1970 +0000) {'ef1': '12', 'operation': 'split', 'user': 'test'}
   49fb7d900906b0a3d329e90da4dcb0a7582d3b6e 4535d0af405c1bf35f37b35f26ec6f9acfa6fe0b 4 (Thu Jan 01 00:00:02 1970 +0000) {'ef1': '2', 'operation': 'rewind', 'user': 'test'}
-  9576e80d6851ce79cd535e2dc5fa01b444d89a39 4535d0af405c1bf35f37b35f26ec6f9acfa6fe0b 0 (Thu Jan 01 00:00:02 1970 +0000) {'ef1': '14', 'operation': 'rewind', 'user': 'test'}
-  a0316c4c54179357e71d068fb8884678ebc7c351 4535d0af405c1bf35f37b35f26ec6f9acfa6fe0b 0 (Thu Jan 01 00:00:02 1970 +0000) {'ef1': '10', 'operation': 'rewind', 'user': 'test'}
+  9576e80d6851ce79cd535e2dc5fa01b444d89a39 4535d0af405c1bf35f37b35f26ec6f9acfa6fe0b 0 (Thu Jan 01 00:00:02 1970 +0000) {'ef1': '14', 'fold-id': 'eeda726b', 'fold-idx': '1', 'fold-size': '2', 'operation': 'rewind', 'user': 'test'}
+  a0316c4c54179357e71d068fb8884678ebc7c351 4535d0af405c1bf35f37b35f26ec6f9acfa6fe0b 0 (Thu Jan 01 00:00:02 1970 +0000) {'ef1': '10', 'fold-id': 'eeda726b', 'fold-idx': '2', 'fold-size': '2', 'operation': 'rewind', 'user': 'test'}
   a0316c4c54179357e71d068fb8884678ebc7c351 e76375de0bfc9c59bdd91067c901f3eed7d6c8fe 4 (Thu Jan 01 00:00:03 1970 +0000) {'ef1': '2', 'operation': 'rewind', 'user': 'test'}
   9576e80d6851ce79cd535e2dc5fa01b444d89a39 95d72d892df7fec59107e10914c5729bdf03665f 4 (Thu Jan 01 00:00:03 1970 +0000) {'ef1': '6', 'operation': 'rewind', 'user': 'test'}
   4535d0af405c1bf35f37b35f26ec6f9acfa6fe0b e76375de0bfc9c59bdd91067c901f3eed7d6c8fe 95d72d892df7fec59107e10914c5729bdf03665f 0 (Thu Jan 01 00:00:03 1970 +0000) {'ef1': '14', 'operation': 'rewind', 'user': 'test'}
@@ -701,11 +700,11 @@
   |\| |    split(meta, parent, content) as 95d72d892df7, e76375de0bfc using rewind by test (Thu Jan 01 00:00:03 1970 +0000)
   | | |
   | x |  9576e80d6851 (5) c_CD0
-  |/ /     rewritten(meta, parent, content) as 4535d0af405c using rewind by test (Thu Jan 01 00:00:02 1970 +0000)
+  |/ /     folded(meta, parent, content) as 4535d0af405c using rewind by test (Thu Jan 01 00:00:02 1970 +0000)
   | |      rewritten(meta, parent) as 95d72d892df7 using rewind by test (Thu Jan 01 00:00:03 1970 +0000)
   | |
   | x  a0316c4c5417 (4) c_CD0
-  |/     rewritten(meta, content) as 4535d0af405c using rewind by test (Thu Jan 01 00:00:02 1970 +0000)
+  |/     folded(meta, content) as 4535d0af405c using rewind by test (Thu Jan 01 00:00:02 1970 +0000)
   |      meta-changed(meta) as e76375de0bfc using rewind by test (Thu Jan 01 00:00:03 1970 +0000)
   |
   x  49fb7d900906 (3) c_CD0