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extensions: register functions always at loading extension (issue5601)...
extensions: register functions always at loading extension (issue5601) Before this patch, functions defined in extensions are registered via extra loaders only in _dispatch(). Therefore, loading extensions in other code paths like below omits registration of functions. - WSGI service - operation across repositories (e.g. subrepo) - test-duplicateoptions.py, using extensions.loadall() directly To register functions always at loading new extension, this patch moves implementation for extra loading from dispatch._dispatch() to extensions.loadall(). AFAIK, only commands module causes cyclic dependency between extensions module, but this patch imports all related modules just before extra loading in loadall(), in order to centralize them. This patch makes extensions.py depend on many other modules, even though extensions.py itself doesn't. It should be avoided if possible, but I don't have any better idea. Some other places like below aren't reasonable for extra loading, IMHO. - specific function in newly added module: existing callers of extensions.loadall() should invoke it, too - hg.repository() or so: no-repo commands aren't covered by this. BTW, this patch removes _loaded.add(name) on relocation, because dispatch._loaded is used only for extraloaders (for similar reason, "exts" variable is removed, too).
Martin von Zweigbergk - - Load All Authors

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test-rebase-base.t
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$ cat >> $HGRCPATH <<EOF
> [extensions]
> rebase=
> drawdag=$TESTDIR/drawdag.py
>
> [phases]
> publish=False
>
> [alias]
> tglog = log -G --template "{rev}: {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: E
|
| o 5: D
|/
o 4: C
|
o 3: Z
|
| o 2: B
|/
o 1: A
|
o 0: 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 6:5251e0cb7302 "E" (E tip)
o 6: E
|\
| o 5: C
| |
o | 4: B
|/
o 3: Z
|
| o 2: D
|/
o 1: A
|
o 0: 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 5:5251e0cb7302 "E" (E tip)
o 5: E
|\
| o 4: B
| |
| o 3: Z
| |
o | 2: C
|/
o 1: A
|
o 0: 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 5:5251e0cb7302 "E" (E tip)
o 5: E
|\
| o 4: C
| |
o | 3: B
|/
o 2: Z
|
o 1: A
|
o 0: 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: E2
|
o 11: E1
|
| o 10: C2
| |
| o 9: C1
|/
| o 8: B2
| |
| o 7: B1
|/
o 6: Z
|
o 5: F
|
o 4: E
|
o 3: C
|
o 2: B
|
o 1: A
|
o 0: 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 8:215e7b0814e1 "D" (D)
rebasing 9:03ca77807e91 "E" (E)
rebasing 10:afc707c82df0 "F" (F)
rebasing 13:018caa673317 "G" (G)
rebasing 14:4f710fbd68cb "H" (H)
rebasing 3:08ebfeb61bac "I" (I)
rebasing 4:a0a5005cec67 "J" (J)
rebasing 5:83780307a7e8 "K" (K)
rebasing 6:e131637a1cb6 "L" (L)
rebasing 11:d6fe3d11d95d "M" (M)
rebasing 12:fa1e02269063 "N" (N)
rebasing 15:448b1a498430 "P" (P tip)
o 15: P
|\
| o 14: N
| |\
o \ \ 13: M
|\ \ \
| | | o 12: L
| | | |
| | o | 11: K
| | |/
| o / 10: J
| |/
o / 9: I
|/
| o 8: H
| |\
| | | o 7: G
| | |/|
| | | o 6: F
| | | |
| | o | 5: E
| | |/
| o | 4: D
| |\|
+---o 3: C
| |
o | 2: Z
| |
| o 1: B
|/
o 0: 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 11:1b2f368c3cb5 "A3" (A3)
rebasing 10:0a33b0519128 "B1" (B1)
rebasing 12:bd6a37b5b67a "B3" (B3 tip)
o 12: B3
|\
| o 11: B1
| |
| | o 10: A3
| | |\
| +---o 9: A2
| | |
| o | 8: C1
| | |
o | | 7: B2
| | |
| o | 6: C0
|/ /
o | 5: Z
| |
o | 4: M3
| |
o | 3: M2
| |
| o 2: A1
|/
o 1: M1
|
o 0: 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: D
|
| o 3: B
|/
o 2: Z
|\
| o 1: C
|
o 0: 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 86d01f49c0d9+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 2:86d01f49c0d9 "B" (B)
rebasing 5:539a0ff83ea9 "E" (E tip)
o 5: E
|\
| o 4: B
| |\
| | o 3: Z
| | |
o | | 2: D
|/ /
o / 1: C
/
o 0: 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 2:86d01f49c0d9 "B" (B)
rebasing 3:b7df2ca01aa8 "D" (D)
o 4: D
|\
+---o 3: B
| |/
| o 2: Z
| |
o | 1: C
/
o 0: A