histedit: make histedit prune when obsolete is enabled

Back in June we made histedit use obsolete markers to cleanup when possible.
This was rolled back as part of 54f9561088c7 (which should have only rolled back
the --abort stuff, but rolled back everything). This caused a nasty bug when
used in conjuction with the inhibit+directaccess extensions where histedit would
leave old nodes around even after they had been squashed away.

The root of the problem is that we first clean up old nodes, and then we clean
up temp nodes. In the first pass, when we obsoleted old nodes, some would become
unobsolete because they had temp nodes on top of them, thus making them stick
around even after the histedit finished.

The fix is to A) move the temp node cleanup to be before the old node cleanup
(since they are topological on top of the old nodes), and B) use obsolete
markers instead of stripping.

hgext/histedit.py

@@ -925,6 +925,13 b' def _histedit(ui, repo, state, *freeargs'
                     for n in succs[1:]:
                         ui.debug(m % node.short(n))
 
+    if supportsmarkers:
+        # Only create markers if the temp nodes weren't already removed.
+        obsolete.createmarkers(repo, ((repo[t],()) for t in sorted(tmpnodes)
+                                       if t in repo))
+    else:
+        cleanupnode(ui, repo, 'temp', tmpnodes)
+
     if not state.keep:
         if mapping:
             movebookmarks(ui, repo, mapping, state.topmost, ntm)
@@ -941,7 +948,6 b' def _histedit(ui, repo, state, *freeargs'
         else:
             cleanupnode(ui, repo, 'replaced', mapping)
 
-    cleanupnode(ui, repo, 'temp', tmpnodes)
     state.clear()
     if os.path.exists(repo.sjoin('undo')):
         os.unlink(repo.sjoin('undo'))

tests/test-histedit-arguments.t

@@ -253,6 +253,7 b' short hash. This tests issue3893.'
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   saved backup bundle to $TESTTMP/foo/.hg/strip-backup/*-backup.hg (glob)
+  saved backup bundle to $TESTTMP/foo/.hg/strip-backup/c8e68270e35a-23a13bf9-backup.hg (glob)
 
   $ hg update -q 2
   $ echo x > x

tests/test-histedit-bookmark-motion.t

@@ -85,6 +85,7 b''
   > fold e860deea161a 4 e
   > pick 652413bf663e 5 f
   > EOF
+  saved backup bundle to $TESTTMP/r/.hg/strip-backup/96e494a2d553-3c6c5d92-backup.hg (glob)
   histedit: moving bookmarks also-two from 177f92b77385 to b346ab9a313d
   histedit: moving bookmarks five from 652413bf663e to cacdfd884a93
   histedit: moving bookmarks four from e860deea161a to 59d9f330561f
@@ -92,7 +93,6 b''
   histedit: moving bookmarks two from 177f92b77385 to b346ab9a313d
   histedit: moving bookmarks will-move-backwards from d2ae7f538514 to cb9a9f314b8b
   saved backup bundle to $TESTTMP/r/.hg/strip-backup/d2ae7f538514-48787b8d-backup.hg (glob)
-  saved backup bundle to $TESTTMP/r/.hg/strip-backup/96e494a2d553-3c6c5d92-backup.hg (glob)
   $ hg log --graph
   @  changeset:   3:cacdfd884a93
   |  bookmark:    five

tests/test-histedit-commute.t

@@ -424,6 +424,7 b" Now, let's try to fold the second commit"
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   saved backup bundle to $TESTTMP/issue4251/.hg/strip-backup/*-backup.hg (glob)
+  saved backup bundle to $TESTTMP/issue4251/.hg/strip-backup/b0f4233702ca-d99e7186-backup.hg (glob)
 
   $ hg --config diff.git=yes export 0
   # HG changeset patch

tests/test-histedit-fold.t

@@ -390,7 +390,8 b' dropped revision.'
   HG: changed file
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
-  saved backup bundle to $TESTTMP/fold-with-dropped/.hg/strip-backup/617f94f13c0f-3d69522c-backup.hg (glob)
+  saved backup bundle to $TESTTMP/fold-with-dropped/.hg/strip-backup/55c8d8dc79ce-4066cd98-backup.hg (glob)
+  saved backup bundle to $TESTTMP/fold-with-dropped/.hg/strip-backup/617f94f13c0f-a35700fc-backup.hg (glob)
   $ hg logt -G
   @  1:10c647b2cdd5 +4
   |

tests/test-histedit-obsolete.t

@@ -64,12 +64,16 b' Enable obsolete'
   > fold e860deea161a 4 e
   > pick 652413bf663e 5 f
   > EOF
-  saved backup bundle to $TESTTMP/base/.hg/strip-backup/96e494a2d553-3c6c5d92-backup.hg (glob)
+  [1]
   $ hg log --graph --hidden
-  @  8:cacdfd884a93 f
+  @  10:cacdfd884a93 f
+  |
+  o  9:59d9f330561f d
   |
-  o  7:59d9f330561f d
-  |
+  | x  8:b558abc46d09 fold-temp-revision e860deea161a
+  | |
+  | x  7:96e494a2d553 d
+  |/
   o  6:b346ab9a313d c
   |
   | x  5:652413bf663e f
@@ -85,6 +89,8 b' Enable obsolete'
   o  0:cb9a9f314b8b a
   
   $ hg debugobsolete
+  96e494a2d553dd05902ba1cee1d94d4cb7b8faed 0 {b346ab9a313db8537ecf96fca3ca3ca984ef3bd7} (*) {'user': 'test'} (glob)
+  b558abc46d09c30f57ac31e85a8a3d64d2e906e4 0 {96e494a2d553dd05902ba1cee1d94d4cb7b8faed} (*) {'user': 'test'} (glob)
   d2ae7f538514cd87c17547b0de4cea71fe1af9fb 0 {cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b} (*) {'user': 'test'} (glob)
   177f92b773850b59254aa5e923436f921b55483b b346ab9a313db8537ecf96fca3ca3ca984ef3bd7 0 (*) {'user': 'test'} (glob)
   055a42cdd88768532f9cf79daa407fc8d138de9b 59d9f330561fd6c88b1a6b32f0e45034d88db784 0 (*) {'user': 'test'} (glob)
@@ -105,7 +111,7 b' create an hidden revision'
   0 files updated, 0 files merged, 3 files removed, 0 files unresolved
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg log --graph
-  @  9:c13eb81022ca f
+  @  11:c13eb81022ca f
   |
   o  6:b346ab9a313d c
   |
@@ -127,7 +133,7 b' Test that rewriting leaving instability '
   $ hg up '.^'
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg log -r 'children(.)'
-  9:c13eb81022ca f (no-eol)
+  11:c13eb81022ca f (no-eol)
   $ hg histedit -r '.' --commands - <<EOF
   > edit b346ab9a313d 6 c
   > EOF
@@ -141,12 +147,12 b' Test that rewriting leaving instability '
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
   $ hg log -r 'unstable()'
-  9:c13eb81022ca f (no-eol)
+  11:c13eb81022ca f (no-eol)
 
 stabilise
 
   $ hg rebase  -r 'unstable()' -d .
-  rebasing 9:c13eb81022ca "f"
+  rebasing 11:c13eb81022ca "f"
   $ hg up tip -q
 
 Test dropping of changeset on the top of the stack
@@ -166,7 +172,7 b' dropped changeset to be hidden.'
   > EOF
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg log -G
-  @  10:40db8afa467b c
+  @  12:40db8afa467b c
   |
   o  0:cb9a9f314b8b a
   
@@ -188,9 +194,9 b' With rewritten ancestors'
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg log -G
-  @  15:ee6544123ab8 c
+  @  17:ee6544123ab8 c
   |
-  o  14:269e713e9eae g
+  o  16:269e713e9eae g
   |
   o  0:cb9a9f314b8b a
   
@@ -212,9 +218,9 b' Check that histedit respect immutability'
   $ hg ph -pv '.^'
   phase changed for 2 changesets
   $ hg log -G
-  @  11:b449568bf7fc (draft) f
+  @  13:b449568bf7fc (draft) f
   |
-  o  10:40db8afa467b (public) c
+  o  12:40db8afa467b (public) c
   |
   o  0:cb9a9f314b8b (public) a
   
@@ -234,19 +240,19 b' Prepare further testing'
   > done
   $ hg phase --force --secret .~2
   $ hg log -G
-  @  16:ee118ab9fa44 (secret) k
+  @  18:ee118ab9fa44 (secret) k
   |
-  o  15:3a6c53ee7f3d (secret) j
+  o  17:3a6c53ee7f3d (secret) j
   |
-  o  14:b605fb7503f2 (secret) i
+  o  16:b605fb7503f2 (secret) i
   |
-  o  13:7395e1ff83bd (draft) h
+  o  15:7395e1ff83bd (draft) h
   |
-  o  12:6b70183d2492 (draft) g
+  o  14:6b70183d2492 (draft) g
   |
-  o  11:b449568bf7fc (draft) f
+  o  13:b449568bf7fc (draft) f
   |
-  o  10:40db8afa467b (public) c
+  o  12:40db8afa467b (public) c
   |
   o  0:cb9a9f314b8b (public) a
   
@@ -284,19 +290,19 b' New-commit as draft (default)'
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg log -G
-  @  22:12e89af74238 (secret) k
+  @  24:12e89af74238 (secret) k
   |
-  o  21:636a8687b22e (secret) j
+  o  23:636a8687b22e (secret) j
   |
-  o  20:ccaf0a38653f (secret) i
+  o  22:ccaf0a38653f (secret) i
   |
-  o  19:11a89d1c2613 (draft) h
+  o  21:11a89d1c2613 (draft) h
   |
-  o  18:c1dec7ca82ea (draft) g
+  o  20:c1dec7ca82ea (draft) g
   |
-  o  17:087281e68428 (draft) f
+  o  19:087281e68428 (draft) f
   |
-  o  10:40db8afa467b (public) c
+  o  12:40db8afa467b (public) c
   |
   o  0:cb9a9f314b8b (public) a
   
@@ -333,19 +339,19 b' New-commit as draft (default)'
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg log -G
-  @  22:12e89af74238 (secret) k
+  @  24:12e89af74238 (secret) k
   |
-  o  21:636a8687b22e (secret) j
+  o  23:636a8687b22e (secret) j
   |
-  o  20:ccaf0a38653f (secret) i
+  o  22:ccaf0a38653f (secret) i
   |
-  o  19:11a89d1c2613 (draft) h
+  o  21:11a89d1c2613 (draft) h
   |
-  o  18:c1dec7ca82ea (draft) g
+  o  20:c1dec7ca82ea (draft) g
   |
-  o  17:087281e68428 (draft) f
+  o  19:087281e68428 (draft) f
   |
-  o  10:40db8afa467b (public) c
+  o  12:40db8afa467b (public) c
   |
   o  0:cb9a9f314b8b (public) a
   
@@ -375,19 +381,19 b' It seems more important to present the s'
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg log -G
-  @  21:558246857888 (secret) k
+  @  23:558246857888 (secret) k
   |
-  o  20:28bd44768535 (secret) h
+  o  22:28bd44768535 (secret) h
   |
-  o  19:d5395202aeb9 (secret) i
+  o  21:d5395202aeb9 (secret) i
   |
-  o  18:21edda8e341b (secret) g
+  o  20:21edda8e341b (secret) g
   |
-  o  17:5ab64f3a4832 (secret) j
+  o  19:5ab64f3a4832 (secret) j
   |
-  o  11:b449568bf7fc (draft) f
+  o  13:b449568bf7fc (draft) f
   |
-  o  10:40db8afa467b (public) c
+  o  12:40db8afa467b (public) c
   |
   o  0:cb9a9f314b8b (public) a
   
@@ -428,33 +434,30 b' Note that there is a few reordering in t'
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
-  saved backup bundle to $TESTTMP/folding/.hg/strip-backup/58019c66f35f-96092fce-backup.hg (glob)
-  saved backup bundle to $TESTTMP/folding/.hg/strip-backup/83d1858e070b-f3469cf8-backup.hg (glob)
-  saved backup bundle to $TESTTMP/folding/.hg/strip-backup/859969f5ed7e-d89a19d7-backup.hg (glob)
   $ hg log -G
-  @  19:f9daec13fb98 (secret) i
+  @  27:f9daec13fb98 (secret) i
   |
-  o  18:49807617f46a (secret) g
+  o  24:49807617f46a (secret) g
   |
-  o  17:050280826e04 (draft) h
+  o  21:050280826e04 (draft) h
   |
-  o  10:40db8afa467b (public) c
+  o  12:40db8afa467b (public) c
   |
   o  0:cb9a9f314b8b (public) a
   
-  $ hg co 18
+  $ hg co 49807617f46a
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ echo wat >> wat
   $ hg add wat
   $ hg ci -m 'add wat'
   created new head
-  $ hg merge 19
+  $ hg merge f9daec13fb98
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg ci -m 'merge'
   $ echo not wat > wat
   $ hg ci -m 'modify wat'
-  $ hg histedit 17
+  $ hg histedit 050280826e04
   abort: cannot edit history that contains merges
   [255]
   $ cd ..