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phabricator: warn if unable to amend, instead of aborting after posting...
phabricator: warn if unable to amend, instead of aborting after posting There was a divergence in behavior here between obsolete and strip based amending. I first noticed the abort when testing outside of the test harness, but then had trouble recreating it here after reverting the code changes. It turns out, strip based amend was successfully amending the public commit after it was posted! It looks like the protection is in the `commit --amend` command, not in the underlying code that it calls. I considered doing a preflight check and aborting. But the locks are only acquired at the end, if amending, and this is too large a section of code to be wrapped in a maybe-it's-held-or-not context manager for my tastes. Additionally, some people do post-push reviews, and amending is the default behavior, so they shouldn't see a misleading error message. The lack of a 'Differential Revision' entry in the commit message breaks a {phabreview} test, so it had to be partially conditionalized.
Martin von Zweigbergk - - Load All Authors

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test-unamend.t
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Test for command `hg unamend` which lives in uncommit extension
===============================================================
$ cat >> $HGRCPATH << EOF
> [alias]
> glog = log -G -T '{rev}:{node|short} {desc}'
> [experimental]
> evolution = createmarkers, allowunstable
> [extensions]
> rebase =
> amend =
> uncommit =
> EOF
Repo Setup
$ hg init repo
$ cd repo
$ for ch in a b c d e f g h; do touch $ch; echo "foo" >> $ch; hg ci -Aqm "Added "$ch; done
$ hg glog
@ 7:ec2426147f0e Added h
|
o 6:87d6d6676308 Added g
|
o 5:825660c69f0c Added f
|
o 4:aa98ab95a928 Added e
|
o 3:62615734edd5 Added d
|
o 2:28ad74487de9 Added c
|
o 1:29becc82797a Added b
|
o 0:18d04c59bb5d Added a
Trying to unamend when there was no amend done
$ hg unamend
abort: changeset must have one predecessor, found 0 predecessors
[255]
Unamend on clean wdir and tip
$ echo "bar" >> h
$ hg amend
$ hg exp
# HG changeset patch
# User test
# Date 0 0
# Thu Jan 01 00:00:00 1970 +0000
# Node ID c9fa1a715c1b7661c0fafb362a9f30bd75878d7d
# Parent 87d6d66763085b629e6d7ed56778c79827273022
Added h
diff -r 87d6d6676308 -r c9fa1a715c1b h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/h Thu Jan 01 00:00:00 1970 +0000
@@ -0,0 +1,2 @@
+foo
+bar
$ hg glog --hidden
@ 8:c9fa1a715c1b Added h
|
| x 7:ec2426147f0e Added h
|/
o 6:87d6d6676308 Added g
|
o 5:825660c69f0c Added f
|
o 4:aa98ab95a928 Added e
|
o 3:62615734edd5 Added d
|
o 2:28ad74487de9 Added c
|
o 1:29becc82797a Added b
|
o 0:18d04c59bb5d Added a
$ hg unamend
$ hg glog --hidden
@ 9:46d02d47eec6 Added h
|
| x 8:c9fa1a715c1b Added h
|/
| x 7:ec2426147f0e Added h
|/
o 6:87d6d6676308 Added g
|
o 5:825660c69f0c Added f
|
o 4:aa98ab95a928 Added e
|
o 3:62615734edd5 Added d
|
o 2:28ad74487de9 Added c
|
o 1:29becc82797a Added b
|
o 0:18d04c59bb5d Added a
$ hg diff
diff -r 46d02d47eec6 h
--- a/h Thu Jan 01 00:00:00 1970 +0000
+++ b/h Thu Jan 01 00:00:00 1970 +0000
@@ -1,1 +1,2 @@
foo
+bar
$ hg exp
# HG changeset patch
# User test
# Date 0 0
# Thu Jan 01 00:00:00 1970 +0000
# Node ID 46d02d47eec6ca096b8dcab3f8f5579c40c3dd9a
# Parent 87d6d66763085b629e6d7ed56778c79827273022
Added h
diff -r 87d6d6676308 -r 46d02d47eec6 h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/h Thu Jan 01 00:00:00 1970 +0000
@@ -0,0 +1,1 @@
+foo
$ hg status
M h
$ hg log -r . -T '{extras % "{extra}\n"}' --config alias.log=log
branch=default
unamend_source=c9fa1a715c1b7661c0fafb362a9f30bd75878d7d
Using unamend to undo an unamed (intentional)
$ hg unamend
$ hg exp
# HG changeset patch
# User test
# Date 0 0
# Thu Jan 01 00:00:00 1970 +0000
# Node ID 850ddfc1bc662997ec6094ada958f01f0cc8070a
# Parent 87d6d66763085b629e6d7ed56778c79827273022
Added h
diff -r 87d6d6676308 -r 850ddfc1bc66 h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/h Thu Jan 01 00:00:00 1970 +0000
@@ -0,0 +1,2 @@
+foo
+bar
$ hg diff
Unamend on a dirty working directory
$ echo "bar" >> a
$ hg amend
$ echo "foobar" >> a
$ echo "bar" >> b
$ hg status
M a
M b
$ hg unamend
$ hg status
M a
M b
$ hg diff
diff -r ec338db45d51 a
--- a/a Thu Jan 01 00:00:00 1970 +0000
+++ b/a Thu Jan 01 00:00:00 1970 +0000
@@ -1,1 +1,3 @@
foo
+bar
+foobar
diff -r ec338db45d51 b
--- a/b Thu Jan 01 00:00:00 1970 +0000
+++ b/b Thu Jan 01 00:00:00 1970 +0000
@@ -1,1 +1,2 @@
foo
+bar
Unamending an added file
$ hg ci -m "Added things to a and b"
$ echo foo > bar
$ hg add bar
$ hg amend
$ hg unamend
$ hg status
A bar
$ hg revert --all
forgetting bar
Unamending a removed file
$ hg remove a
$ hg amend
$ hg unamend
$ hg status
R a
? bar
$ hg revert --all
undeleting a
Unamending an added file with dirty wdir status
$ hg add bar
$ hg amend
$ echo bar >> bar
$ hg status
M bar
$ hg unamend
$ hg status
A bar
$ hg diff
diff -r 7f79409af972 bar
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/bar Thu Jan 01 00:00:00 1970 +0000
@@ -0,0 +1,2 @@
+foo
+bar
$ hg revert --all
forgetting bar
Unamending in middle of a stack
$ hg glog
@ 19:7f79409af972 Added things to a and b
|
o 12:ec338db45d51 Added h
|
o 6:87d6d6676308 Added g
|
o 5:825660c69f0c Added f
|
o 4:aa98ab95a928 Added e
|
o 3:62615734edd5 Added d
|
o 2:28ad74487de9 Added c
|
o 1:29becc82797a Added b
|
o 0:18d04c59bb5d Added a
$ hg up 5
2 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ echo bar >> f
$ hg amend
3 new orphan changesets
$ hg rebase -s 6 -d . -q
$ hg glog
o 23:03ddd6fc5af1 Added things to a and b
|
o 22:3e7b64ee157b Added h
|
o 21:49635b68477e Added g
|
@ 20:93f0e8ffab32 Added f
|
o 4:aa98ab95a928 Added e
|
o 3:62615734edd5 Added d
|
o 2:28ad74487de9 Added c
|
o 1:29becc82797a Added b
|
o 0:18d04c59bb5d Added a
$ hg --config experimental.evolution=createmarkers unamend
abort: cannot unamend changeset with children
[255]
$ hg unamend
3 new orphan changesets
Trying to unamend a public changeset
$ hg up -C 23
5 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg phase -r . -p
1 new phase-divergent changesets
$ hg unamend
abort: cannot unamend public changesets
(see 'hg help phases' for details)
[255]
Testing whether unamend retains copies or not
$ hg status
? bar
$ hg mv a foo
$ hg ci -m "Moved a to foo"
$ hg exp --git
# HG changeset patch
# User test
# Date 0 0
# Thu Jan 01 00:00:00 1970 +0000
# Node ID cfef290346fbee5126313d7e1aab51d877679b09
# Parent 03ddd6fc5af19e028c44a2fd6d790dd22712f231
Moved a to foo
diff --git a/a b/foo
rename from a
rename to foo
$ hg mv b foobar
$ hg diff --git
diff --git a/b b/foobar
rename from b
rename to foobar
$ hg amend
$ hg exp --git
# HG changeset patch
# User test
# Date 0 0
# Thu Jan 01 00:00:00 1970 +0000
# Node ID eca050985275bb271ce3092b54e56ea5c85d29a3
# Parent 03ddd6fc5af19e028c44a2fd6d790dd22712f231
Moved a to foo
diff --git a/a b/foo
rename from a
rename to foo
diff --git a/b b/foobar
rename from b
rename to foobar
$ hg mv c wat
$ hg unamend
Retained copies in new prdecessor commit
$ hg exp --git
# HG changeset patch
# User test
# Date 0 0
# Thu Jan 01 00:00:00 1970 +0000
# Node ID 552e3af4f01f620f88ca27be1f898316235b736a
# Parent 03ddd6fc5af19e028c44a2fd6d790dd22712f231
Moved a to foo
diff --git a/a b/foo
rename from a
rename to foo
Retained copies in working directoy
$ hg diff --git
diff --git a/b b/foobar
rename from b
rename to foobar
diff --git a/c b/wat
rename from c
rename to wat