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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.
Matt Harbison - - Load All Authors

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test-rebase-base-flag.t
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Test the "--base" flag of the rebase command. (Tests unrelated to the "--base"
flag should probably live in somewhere else)
$ cat >> $HGRCPATH <<EOF
> [extensions]
> rebase=
> drawdag=$TESTDIR/drawdag.py
>
> [phases]
> publish=False
>
> [alias]
> tglog = log -G --template "{rev}: {node|short} {desc}"
> EOF
$ rebasewithdag() {
> N=`"$PYTHON" -c "print($N+1)"`
> hg init repo$N && cd repo$N
> hg debugdrawdag
> hg rebase "$@" > _rebasetmp
> r=$?
> grep -v 'saved backup bundle' _rebasetmp
> [ $r -eq 0 ] && hg tglog
> cd ..
> return $r
> }
Single branching point, without merge:
$ rebasewithdag -b D -d Z <<'EOS'
> D E
> |/
> Z B C # C: branching point, E should be picked
> \|/ # B should not be picked
> A
> |
> R
> EOS
rebasing 3:d6003a550c2c "C" (C)
rebasing 5:4526cf523425 "D" (D)
rebasing 6:b296604d9846 "E" (E tip)
o 6: 4870f5e7df37 E
|
| o 5: dc999528138a D
|/
o 4: 6b3e11729672 C
|
o 3: 57e70bad1ea3 Z
|
| o 2: c1e6b162678d B
|/
o 1: 21a6c4502885 A
|
o 0: b41ce7760717 R
Multiple branching points caused by selecting a single merge changeset:
$ rebasewithdag -b E -d Z <<'EOS'
> E
> /|
> B C D # B, C: multiple branching points
> | |/ # D should not be picked
> Z | /
> \|/
> A
> |
> R
> EOS
rebasing 2:c1e6b162678d "B" (B)
rebasing 3:d6003a550c2c "C" (C)
rebasing 6:54c8f00cb91c "E" (E tip)
o 6: 00598421b616 E
|\
| o 5: 6b3e11729672 C
| |
o | 4: 85260910e847 B
|/
o 3: 57e70bad1ea3 Z
|
| o 2: 8924700906fe D
|/
o 1: 21a6c4502885 A
|
o 0: b41ce7760717 R
Rebase should not extend the "--base" revset using "descendants":
$ rebasewithdag -b B -d Z <<'EOS'
> E
> /|
> Z B C # descendants(B) = B+E. With E, C will be included incorrectly
> \|/
> A
> |
> R
> EOS
rebasing 2:c1e6b162678d "B" (B)
rebasing 5:54c8f00cb91c "E" (E tip)
o 5: e583bf3ff54c E
|\
| o 4: 85260910e847 B
| |
| o 3: 57e70bad1ea3 Z
| |
o | 2: d6003a550c2c C
|/
o 1: 21a6c4502885 A
|
o 0: b41ce7760717 R
Rebase should not simplify the "--base" revset using "roots":
$ rebasewithdag -b B+E -d Z <<'EOS'
> E
> /|
> Z B C # roots(B+E) = B. Without E, C will be missed incorrectly
> \|/
> A
> |
> R
> EOS
rebasing 2:c1e6b162678d "B" (B)
rebasing 3:d6003a550c2c "C" (C)
rebasing 5:54c8f00cb91c "E" (E tip)
o 5: 00598421b616 E
|\
| o 4: 6b3e11729672 C
| |
o | 3: 85260910e847 B
|/
o 2: 57e70bad1ea3 Z
|
o 1: 21a6c4502885 A
|
o 0: b41ce7760717 R
The destination is one of the two branching points of a merge:
$ rebasewithdag -b F -d Z <<'EOS'
> F
> / \
> E D
> / /
> Z C
> \ /
> B
> |
> A
> EOS
nothing to rebase
[1]
Multiple branching points caused by multiple bases (issue5420):
$ rebasewithdag -b E1+E2+C2+B1 -d Z <<'EOS'
> Z E2
> | /
> F E1 C2
> |/ /
> E C1 B2
> |/ /
> C B1
> |/
> B
> |
> A
> |
> R
> EOS
rebasing 3:a113dbaa660a "B1" (B1)
rebasing 5:06ce7b1cc8c2 "B2" (B2)
rebasing 6:0ac98cce32d3 "C1" (C1)
rebasing 8:781512f5e33d "C2" (C2)
rebasing 9:428d8c18f641 "E1" (E1)
rebasing 11:e1bf82f6b6df "E2" (E2)
o 12: e4a37b6fdbd2 E2
|
o 11: 9675bea983df E1
|
| o 10: 4faf5d4c80dc C2
| |
| o 9: d4799b1ad57d C1
|/
| o 8: 772732dc64d6 B2
| |
| o 7: ad3ac528a49f B1
|/
o 6: 2cbdfca6b9d5 Z
|
o 5: fcdb3293ec13 F
|
o 4: a4652bb8ac54 E
|
o 3: bd5548558fcf C
|
o 2: c1e6b162678d B
|
o 1: 21a6c4502885 A
|
o 0: b41ce7760717 R
Multiple branching points with multiple merges:
$ rebasewithdag -b G+P -d Z <<'EOS'
> G H P
> |\ /| |\
> F E D M N
> \|/| /| |\
> Z C B I J K L
> \|/ |/ |/
> A A A
> EOS
rebasing 2:dc0947a82db8 "C" (C)
rebasing 8:4e4f9194f9f1 "D" (D)
rebasing 9:03ca77807e91 "E" (E)
rebasing 10:afc707c82df0 "F" (F)
rebasing 13:690dfff91e9e "G" (G)
rebasing 14:2893b886bb10 "H" (H)
rebasing 3:08ebfeb61bac "I" (I)
rebasing 4:a0a5005cec67 "J" (J)
rebasing 5:83780307a7e8 "K" (K)
rebasing 6:e131637a1cb6 "L" (L)
rebasing 11:d1f6d0c3c7e4 "M" (M)
rebasing 12:7aaec6f81888 "N" (N)
rebasing 15:325bc8f1760d "P" (P tip)
o 15: 6ef6a0ea3b18 P
|\
| o 14: 20ba3610a7e5 N
| |\
o \ \ 13: cd4f6c06d2ab M
|\ \ \
| | | o 12: bca872041455 L
| | | |
| | o | 11: 7bbb6c8a6ad7 K
| | |/
| o / 10: de0cbffe893e J
| |/
o / 9: 0e710f176a88 I
|/
| o 8: 52507bab39ca H
| |\
| | | o 7: bb5fe4652f0d G
| | |/|
| | | o 6: f4ad4b31daf4 F
| | | |
| | o | 5: b168f85f2e78 E
| | |/
| o | 4: 8d09fcdb5594 D
| |\|
+---o 3: ab70b4c5a9c9 C
| |
o | 2: 262e37e34f63 Z
| |
| o 1: 112478962961 B
|/
o 0: 426bada5c675 A
Slightly more complex merge case (mentioned in https://www.mercurial-scm.org/pipermail/mercurial-devel/2016-November/091074.html):
$ rebasewithdag -b A3+B3 -d Z <<'EOF'
> Z C1 A3 B3
> | / / \ / \
> M3 C0 A1 A2 B1 B2
> | / | | | |
> M2 M1 C1 C1 M3
> |
> M1
> |
> M0
> EOF
rebasing 4:8817fae53c94 "C0" (C0)
rebasing 6:06ca5dfe3b5b "B2" (B2)
rebasing 7:73508237b032 "C1" (C1)
rebasing 9:fdb955e2faed "A2" (A2)
rebasing 11:4e449bd1a643 "A3" (A3)
rebasing 10:0a33b0519128 "B1" (B1)
rebasing 12:209327807c3a "B3" (B3 tip)
o 12: ceb984566332 B3
|\
| o 11: 19d93caac497 B1
| |
| | o 10: 058e73d3916b A3
| | |\
| +---o 9: 0ba13ad72234 A2
| | |
| o | 8: c122c2af10c6 C1
| | |
o | | 7: 74275896650e B2
| | |
| o | 6: 455ba9bd3ea2 C0
|/ /
o | 5: b3d7d2fda53b Z
| |
o | 4: 182ab6383dd7 M3
| |
o | 3: 6c3f73563d5f M2
| |
| o 2: 88c860fffcc2 A1
|/
o 1: bc852baa85dd M1
|
o 0: dbdfc5c9bcd5 M0
Disconnected graph:
$ rebasewithdag -b B -d Z <<'EOS'
> B
> |
> Z A
> EOS
nothing to rebase from 112478962961 to 48b9aae0607f
[1]
Multiple roots. Roots are ancestors of dest:
$ rebasewithdag -b B+D -d Z <<'EOF'
> D Z B
> \|\|
> C A
> EOF
rebasing 2:112478962961 "B" (B)
rebasing 3:b70f76719894 "D" (D)
o 4: 511efad7bf13 D
|
| o 3: 25c4e279af62 B
|/
o 2: 3a49f54d7bb1 Z
|\
| o 1: 96cc3511f894 C
|
o 0: 426bada5c675 A
Multiple roots. One root is not an ancestor of dest:
$ rebasewithdag -b B+D -d Z <<'EOF'
> Z B D
> \|\|
> A C
> EOF
nothing to rebase from f675d5a1c6a4+b70f76719894 to 262e37e34f63
[1]
Multiple roots. One root is not an ancestor of dest. Select using a merge:
$ rebasewithdag -b E -d Z <<'EOF'
> E
> |\
> Z B D
> \|\|
> A C
> EOF
rebasing 2:f675d5a1c6a4 "B" (B)
rebasing 5:f68696fe6af8 "E" (E tip)
o 5: f6e6f5081554 E
|\
| o 4: 30cabcba27be B
| |\
| | o 3: 262e37e34f63 Z
| | |
o | | 2: b70f76719894 D
|/ /
o / 1: 96cc3511f894 C
/
o 0: 426bada5c675 A
Multiple roots. Two children share two parents while dest has only one parent:
$ rebasewithdag -b B+D -d Z <<'EOF'
> Z B D
> \|\|\
> A C A
> EOF
rebasing 2:f675d5a1c6a4 "B" (B)
rebasing 3:c2a779e13b56 "D" (D)
o 4: 5eecd056b5f8 D
|\
+---o 3: 30cabcba27be B
| |/
| o 2: 262e37e34f63 Z
| |
o | 1: 96cc3511f894 C
/
o 0: 426bada5c675 A