# HG changeset patch
# User Martin von Zweigbergk <martinvonz@google.com>
# Date 1620146418 25200
# Node ID 65d4e47d7f26b0e00c4560cdafb22ca7202dffb1
# Parent  f8ab6ad1ffc0aa590914ecf0b796e66c4bb480e0
rewriteutil: use precheck from core if recent enough

This commit makes the evolve extension's `rewriteutil.precheck()`
simply delegate to the same function from Mercurial core, if that
function is deemed recent enough. The way I made that check is by
looking for `rewriteutil.find_new_divergence_from()`. That means that
there's a range of commits (ba6881c6::8125bcd2^) where the user would
see less detailed error messages if they are running with an hg
version from that range (there are no released versions in that
range).

As you can see in the tests, switching to core's version of the
function mostly affects error messages and exit codes.

diff -r f8ab6ad1ffc0 -r 65d4e47d7f26 hgext3rd/evolve/rewriteutil.py
--- a/hgext3rd/evolve/rewriteutil.py	Sat Jun 19 22:33:38 2021 +0300
+++ b/hgext3rd/evolve/rewriteutil.py	Tue May 04 09:40:18 2021 -0700
@@ -23,6 +23,7 @@
     obsolete,
     obsutil,
     revset,
+    rewriteutil as corerewriteutil,
     util,
 )
 
@@ -56,6 +57,12 @@
 
     <action> can be used to control the commit message.
     """
+    # If this attribute exists, then core's rewriteutil is recent enough
+    # that it has all the features from our own implementation.
+    if util.safehasattr(corerewriteutil, 'find_new_divergence_from'):
+        return corerewriteutil.precheck(repo, revs, action)
+
+    # hg <= 5.8 (d90f6237)
     if node.nullrev in revs:
         msg = _(b"cannot %s the null revision") % (action)
         hint = _(b"no changeset checked out")
diff -r f8ab6ad1ffc0 -r 65d4e47d7f26 tests/test-amend-patch.t
--- a/tests/test-amend-patch.t	Sat Jun 19 22:33:38 2021 +0300
+++ b/tests/test-amend-patch.t	Tue May 04 09:40:18 2021 -0700
@@ -655,7 +655,7 @@
   $ HGEDITOR=cat hg amend --patch
   abort: cannot amend public changesets: 36454bda1fdb
   (see 'hg help phases' for details)
-  [255]
+  [10]
 
   $ hg phase -r . --draft --force
 
diff -r f8ab6ad1ffc0 -r 65d4e47d7f26 tests/test-amend.t
--- a/tests/test-amend.t	Sat Jun 19 22:33:38 2021 +0300
+++ b/tests/test-amend.t	Tue May 04 09:40:18 2021 -0700
@@ -199,16 +199,16 @@
 when rewritting an already rewritten changeset (i.e cset being rewritten will
 be the base of divergence)
   $ hg amend -m "i am gonna create divergence"
-  abort: amend of 9092f1db7931 creates content-divergence with aafaf407b00d
+  abort: cannot amend 9092f1db7931, as that creates content-divergence with aafaf407b00d
   (add --verbose for details or see 'hg help evolution.instability')
-  [255]
+  [10]
   $ hg amend -m "i am gonna create divergence" --verbose
-  abort: amend of 9092f1db7931 creates content-divergence with aafaf407b00d
-      changeset 9092f1db7931 already have a successors as changeset aafaf407b00d
+  abort: cannot amend 9092f1db7931, as that creates content-divergence with aafaf407b00d
+      changeset 9092f1db7931 already has a successor in changeset aafaf407b00d
       rewriting changeset 9092f1db7931 would create "content-divergence"
-      set experimental.evolution.allowdivergence=True to overwrite this check
+      set experimental.evolution.allowdivergence=True to skip this check
   (see 'hg help evolution.instability' for details on content-divergence)
-  [255]
+  [10]
 
 when rewritting a cset which has a predecessor with non-obsolete successor
 
@@ -229,14 +229,14 @@
 
   $ hg evolve -l
   $ hg amend -m "i am gonna create divergence"
-  abort: amend of f8c05838af90 creates content-divergence with aafaf407b00d, from 9092f1db7931
+  abort: cannot amend f8c05838af90, as that creates content-divergence with aafaf407b00d, from 9092f1db7931
   (add --verbose for details or see 'hg help evolution.instability')
-  [255]
+  [10]
   $ hg amend -m "i am gonna create divergence" --verbose
-  abort: amend of f8c05838af90 creates content-divergence with aafaf407b00d, from 9092f1db7931
-      changeset f8c05838af90 is an evolution of changeset 9092f1db7931
-      changeset 9092f1db7931 already have a successors as changeset aafaf407b00d
+  abort: cannot amend f8c05838af90, as that creates content-divergence with aafaf407b00d, from 9092f1db7931
+      changeset f8c05838af90 is a successor of changeset 9092f1db7931
+      changeset 9092f1db7931 already has a successor in changeset aafaf407b00d
       rewriting changeset f8c05838af90 would create "content-divergence"
-      set experimental.evolution.allowdivergence=True to overwrite this check
+      set experimental.evolution.allowdivergence=True to skip this check
   (see 'hg help evolution.instability' for details on content-divergence)
-  [255]
+  [10]
diff -r f8ab6ad1ffc0 -r 65d4e47d7f26 tests/test-evolve.t
--- a/tests/test-evolve.t	Sat Jun 19 22:33:38 2021 +0300
+++ b/tests/test-evolve.t	Tue May 04 09:40:18 2021 -0700
@@ -148,7 +148,7 @@
   $ hg prune 1
   abort: cannot prune public changesets: 7c3bad9141dc
   (see 'hg help phases' for details)
-  [255]
+  [10]
   $ hg log -r 1 --template '{rev} {phase} {obsolete}\n'
   1 public 
 
@@ -1261,9 +1261,9 @@
   $ hg up 274b6cd0c101^
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ hg uncommit --all
-  abort: uncommit will orphan 4 descendants
+  abort: cannot uncommit changeset, as that will orphan 4 descendants
   (see 'hg help evolution.instability')
-  [255]
+  [10]
   $ hg up 274b6cd0c101
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg uncommit --all
@@ -1318,13 +1318,13 @@
   $ mkcommit c5_
   created new head
   $ hg prune '0ef9ff75f8e2 + f1b85956c48c'
-  abort: prune will orphan 1 descendants
+  abort: cannot prune changeset, as that will orphan 1 descendants
   (see 'hg help evolution.instability')
-  [255]
+  [10]
   $ hg prune '98e171e2f272::0d9203b74542'
-  abort: prune will orphan 1 descendants
+  abort: cannot prune changeset, as that will orphan 1 descendants
   (see 'hg help evolution.instability')
-  [255]
+  [10]
   $ hg prune '0ef9ff75f8e2::'
   3 changesets pruned
   $ glog -r "0cf3707e8971::"
diff -r f8ab6ad1ffc0 -r 65d4e47d7f26 tests/test-fold.t
--- a/tests/test-fold.t	Sat Jun 19 22:33:38 2021 +0300
+++ b/tests/test-fold.t	Tue May 04 09:40:18 2021 -0700
@@ -47,7 +47,7 @@
   $ hg fold --exact null::
   abort: cannot fold the null revision
   (no changeset checked out)
-  [255]
+  [10]
   $ hg fold
   abort: no revisions specified
   [255]
@@ -81,7 +81,7 @@
   $ hg fold --from -r 0
   abort: cannot fold public changesets: 1ea73414a91b
   (see 'hg help phases' for details)
-  [255]
+  [10]
 
 Test actual folding
 
@@ -222,13 +222,13 @@
   > evolution = createmarkers, allnewcommands
   > EOF
   $ hg fold --from 'desc("r4")'
-  abort: fold will orphan 1 descendants
+  abort: cannot fold changeset, as that will orphan 1 descendants
   (see 'hg help evolution.instability')
-  [255]
+  [10]
   $ hg fold --from 'desc("r3")::desc("r11")'
-  abort: fold will orphan 1 descendants
+  abort: cannot fold changeset, as that will orphan 1 descendants
   (see 'hg help evolution.instability')
-  [255]
+  [10]
 
 test --user variant
 
@@ -430,9 +430,9 @@
 
   $ hg fold --exact -r 'desc("A")::desc("B")' -m 'second fold' \
   >         --config experimental.evolution.allowdivergence=no
-  abort: fold of 4b34ecfb0d56 creates content-divergence with fcfd42a7fa46
+  abort: cannot fold 4b34ecfb0d56, as that creates content-divergence with fcfd42a7fa46
   (add --verbose for details or see 'hg help evolution.instability')
-  [255]
+  [10]
 
 but if we allow divergence, this should work and should create new content-divergent changesets
 
diff -r f8ab6ad1ffc0 -r 65d4e47d7f26 tests/test-metaedit.t
--- a/tests/test-metaedit.t	Sat Jun 19 22:33:38 2021 +0300
+++ b/tests/test-metaedit.t	Tue May 04 09:40:18 2021 -0700
@@ -74,7 +74,7 @@
   $ hg metaedit -r 0 --fold
   abort: cannot fold public changesets: ea207398892e
   (see 'hg help phases' for details)
-  [255]
+  [10]
   $ hg metaedit 'desc(C) + desc(F)' --fold
   abort: cannot fold non-linear revisions (multiple roots given)
   [255]
@@ -87,9 +87,9 @@
   (587528abfffe will become unstable and new unstable changes are not allowed)
   [255]
   $ hg metaedit 'desc(A)::desc(B)' --fold --config 'experimental.evolution=createmarkers, allnewcommands'
-  abort: fold will orphan 4 descendants
+  abort: cannot fold changeset, as that will orphan 4 descendants
   (see 'hg help evolution.instability')
-  [255]
+  [10]
   $ hg metaedit --user foobar
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg log --template '{rev}: {author}\n' -r 'desc(F):' --hidden
diff -r f8ab6ad1ffc0 -r 65d4e47d7f26 tests/test-pick.t
--- a/tests/test-pick.t	Sat Jun 19 22:33:38 2021 +0300
+++ b/tests/test-pick.t	Tue May 04 09:40:18 2021 -0700
@@ -292,7 +292,7 @@
   $ hg pick -r 7c15c05db6fa
   abort: cannot pick public changesets: 7c15c05db6fa
   (see 'hg help phases' for details)
-  [255]
+  [10]
 
   $ hg glog
   @  10:c437988de89f foo to b
diff -r f8ab6ad1ffc0 -r 65d4e47d7f26 tests/test-prune.t
--- a/tests/test-prune.t	Sat Jun 19 22:33:38 2021 +0300
+++ b/tests/test-prune.t	Tue May 04 09:40:18 2021 -0700
@@ -94,7 +94,7 @@
   $ hg prune 0
   abort: cannot prune public changesets: 1f0dee641bb7
   (see 'hg help phases' for details)
-  [255]
+  [10]
   $ hg debugobsolete
   9d206ffc875e1bc304590549be293be36821e66c 0 {47d2a3944de8b013de3be9578e8e344ea2e6c097} (Sat Dec 15 00:00:00 1979 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'blah'}
   7c3bad9141dcb46ff89abf5f61856facd56e476c 0 {1f0dee641bb7258c56bd60e93edfa2405381c41e} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'}
diff -r f8ab6ad1ffc0 -r 65d4e47d7f26 tests/test-sharing.t
--- a/tests/test-sharing.t	Sat Jun 19 22:33:38 2021 +0300
+++ b/tests/test-sharing.t	Tue May 04 09:40:18 2021 -0700
@@ -165,7 +165,7 @@
   $ hg amend -m 'fix bug 37'
   abort: cannot amend public changesets: 7b49f864d655
   (see 'hg help phases' for details)
-  [255]
+  [10]
 
 Figure SG05
   $ hg -R ../public shortlog -G
diff -r f8ab6ad1ffc0 -r 65d4e47d7f26 tests/test-split.t
--- a/tests/test-split.t	Sat Jun 19 22:33:38 2021 +0300
+++ b/tests/test-split.t	Tue May 04 09:40:18 2021 -0700
@@ -140,7 +140,7 @@
   $ hg split --rev 'desc("_a")'
   abort: cannot split public changesets: 135f39f4bd78
   (see 'hg help phases' for details)
-  [255]
+  [10]
   $ hg phase --rev 'desc("_a")' --draft --force
 
 Split a revision specified with -r
@@ -352,9 +352,9 @@
   > evolutioncommands=split
   > EOF
   $ hg split -r "desc(split3)"
-  abort: split will orphan 4 descendants
+  abort: cannot split changeset, as that will orphan 4 descendants
   (see 'hg help evolution.instability')
-  [255]
+  [10]
 
 Changing evolution level to createmarkers
   $ echo "[experimental]" >> $HGRCPATH
diff -r f8ab6ad1ffc0 -r 65d4e47d7f26 tests/test-touch.t
--- a/tests/test-touch.t	Sat Jun 19 22:33:38 2021 +0300
+++ b/tests/test-touch.t	Tue May 04 09:40:18 2021 -0700
@@ -179,7 +179,7 @@
   $ hg touch 2
   abort: cannot touch public changesets: * (glob)
   (see 'hg help phases' for details)
-  [255]
+  [10]
   $ hg touch --duplicate 2
 
 Reviving merge commit
diff -r f8ab6ad1ffc0 -r 65d4e47d7f26 tests/test-uncommit.t
--- a/tests/test-uncommit.t	Sat Jun 19 22:33:38 2021 +0300
+++ b/tests/test-uncommit.t	Tue May 04 09:40:18 2021 -0700
@@ -17,7 +17,7 @@
   $ hg uncommit
   abort: cannot uncommit the null revision
   (no changeset checked out)
-  [255]
+  [10]
 
 Cannot uncommit public changeset
 
@@ -27,7 +27,7 @@
   $ hg uncommit
   abort: cannot uncommit public changesets: 07f494440405
   (see 'hg help phases' for details)
-  [255]
+  [10]
   $ hg phase --force --draft .
 
 Cannot uncommit merge