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revisions: allow "x123" to refer to nodeid prefix "123"...
revisions: allow "x123" to refer to nodeid prefix "123" When resolving "123" to a revision, we try to interpret it as revnum before we try to interpret it as a nodeid hex prefix. This can lead to the shortest valid prefix being longer than necessary. This patch lets us write such nodeids in a shorter form by prefixing them with "x" instead of adding more hex digits until they're longer than the longest decimal revnum. On my hg repo with almost 69k revisions, turning this feature on saves on average 0.4% on the average nodeid length. That clearly doesn't justify this patch. However, it becomes more usefule when combined with the earlier patches in this series that let you disambiguate nodeid prefixes within a configured revset. Note that we attempt to resolve symbols as nodeid prefixes after we've exhausted all other posibilities, so this is a backwards compatible change (only queries that would previously fail may now succeed). I've still hidden this feature behind an experiemntal config option so we can roll it back if needed. Differential Revision: https://phab.mercurial-scm.org/D4041
Boris Feld - - Load All Authors

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r37920:326b174c stable
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test-bundle-phases.t
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$ cat >> $HGRCPATH <<EOF
> [experimental]
> bundle-phases=yes
> [extensions]
> strip=
> drawdag=$TESTDIR/drawdag.py
> EOF
Set up repo with linear history
$ hg init linear
$ cd linear
$ hg debugdrawdag <<'EOF'
> E
> |
> D
> |
> C
> |
> B
> |
> A
> EOF
$ hg phase --public A
$ hg phase --force --secret D
$ hg log -G -T '{desc} {phase}\n'
o E secret
|
o D secret
|
o C draft
|
o B draft
|
o A public
Phases are restored when unbundling
$ hg bundle --base B -r E bundle
3 changesets found
$ hg debugbundle bundle
Stream params: {Compression: BZ}
changegroup -- {nbchanges: 3, targetphase: 2, version: 02} (mandatory: True)
26805aba1e600a82e93661149f2313866a221a7b
f585351a92f85104bff7c284233c338b10eb1df7
9bc730a19041f9ec7cb33c626e811aa233efb18c
cache:rev-branch-cache -- {} (mandatory: False)
phase-heads -- {} (mandatory: True)
26805aba1e600a82e93661149f2313866a221a7b draft
$ hg strip --no-backup C
$ hg unbundle -q bundle
$ rm bundle
$ hg log -G -T '{desc} {phase}\n'
o E secret
|
o D secret
|
o C draft
|
o B draft
|
o A public
Root revision's phase is preserved
$ hg bundle -a bundle
5 changesets found
$ hg strip --no-backup A
$ hg unbundle -q bundle
$ rm bundle
$ hg log -G -T '{desc} {phase}\n'
o E secret
|
o D secret
|
o C draft
|
o B draft
|
o A public
Completely public history can be restored
$ hg phase --public E
$ hg bundle -a bundle
5 changesets found
$ hg strip --no-backup A
$ hg unbundle -q bundle
$ rm bundle
$ hg log -G -T '{desc} {phase}\n'
o E public
|
o D public
|
o C public
|
o B public
|
o A public
Direct transition from public to secret can be restored
$ hg phase --secret --force D
$ hg bundle -a bundle
5 changesets found
$ hg strip --no-backup A
$ hg unbundle -q bundle
$ rm bundle
$ hg log -G -T '{desc} {phase}\n'
o E secret
|
o D secret
|
o C public
|
o B public
|
o A public
Revisions within bundle preserve their phase even if parent changes its phase
$ hg phase --draft --force B
$ hg bundle --base B -r E bundle
3 changesets found
$ hg strip --no-backup C
$ hg phase --public B
$ hg unbundle -q bundle
$ rm bundle
$ hg log -G -T '{desc} {phase}\n'
o E secret
|
o D secret
|
o C draft
|
o B public
|
o A public
Phase of ancestors of stripped node get advanced to accommodate child
$ hg bundle --base B -r E bundle
3 changesets found
$ hg strip --no-backup C
$ hg phase --force --secret B
$ hg unbundle -q bundle
$ rm bundle
$ hg log -G -T '{desc} {phase}\n'
o E secret
|
o D secret
|
o C draft
|
o B draft
|
o A public
Unbundling advances phases of changesets even if they were already in the repo.
To test that, create a bundle of everything in draft phase and then unbundle
to see that secret becomes draft, but public remains public.
$ hg phase --draft --force A
$ hg phase --draft E
$ hg bundle -a bundle
5 changesets found
$ hg phase --public A
$ hg phase --secret --force E
$ hg unbundle -q bundle
$ rm bundle
$ hg log -G -T '{desc} {phase}\n'
o E draft
|
o D draft
|
o C draft
|
o B draft
|
o A public
Unbundling change in the middle of a stack does not affect later changes
$ hg strip --no-backup E
$ hg phase --secret --force D
$ hg log -G -T '{desc} {phase}\n'
o D secret
|
o C draft
|
o B draft
|
o A public
$ hg bundle --base A -r B bundle
1 changesets found
$ hg unbundle -q bundle
$ rm bundle
$ hg log -G -T '{desc} {phase}\n'
o D secret
|
o C draft
|
o B draft
|
o A public
$ cd ..
Set up repo with non-linear history
$ hg init non-linear
$ cd non-linear
$ hg debugdrawdag <<'EOF'
> D E
> |\|
> B C
> |/
> A
> EOF
$ hg phase --public C
$ hg phase --force --secret B
$ hg log -G -T '{node|short} {desc} {phase}\n'
o 03ca77807e91 E draft
|
| o 4e4f9194f9f1 D secret
|/|
o | dc0947a82db8 C public
| |
| o 112478962961 B secret
|/
o 426bada5c675 A public
Restore bundle of entire repo
$ hg bundle -a bundle
5 changesets found
$ hg debugbundle bundle
Stream params: {Compression: BZ}
changegroup -- {nbchanges: 5, targetphase: 2, version: 02} (mandatory: True)
426bada5c67598ca65036d57d9e4b64b0c1ce7a0
112478962961147124edd43549aedd1a335e44bf
dc0947a82db884575bb76ea10ac97b08536bfa03
4e4f9194f9f181c57f62e823e8bdfa46ab9e4ff4
03ca77807e919db8807c3749086dc36fb478cac0
cache:rev-branch-cache -- {} (mandatory: False)
phase-heads -- {} (mandatory: True)
dc0947a82db884575bb76ea10ac97b08536bfa03 public
03ca77807e919db8807c3749086dc36fb478cac0 draft
$ hg strip --no-backup A
$ hg unbundle -q bundle
$ rm bundle
$ hg log -G -T '{node|short} {desc} {phase}\n'
o 03ca77807e91 E draft
|
| o 4e4f9194f9f1 D secret
|/|
o | dc0947a82db8 C public
| |
| o 112478962961 B secret
|/
o 426bada5c675 A public
$ hg bundle --base 'A + C' -r D bundle
2 changesets found
$ hg debugbundle bundle
Stream params: {Compression: BZ}
changegroup -- {nbchanges: 2, targetphase: 2, version: 02} (mandatory: True)
112478962961147124edd43549aedd1a335e44bf
4e4f9194f9f181c57f62e823e8bdfa46ab9e4ff4
cache:rev-branch-cache -- {} (mandatory: False)
phase-heads -- {} (mandatory: True)
$ rm bundle
$ hg bundle --base A -r D bundle
3 changesets found
$ hg debugbundle bundle
Stream params: {Compression: BZ}
changegroup -- {nbchanges: 3, targetphase: 2, version: 02} (mandatory: True)
112478962961147124edd43549aedd1a335e44bf
dc0947a82db884575bb76ea10ac97b08536bfa03
4e4f9194f9f181c57f62e823e8bdfa46ab9e4ff4
cache:rev-branch-cache -- {} (mandatory: False)
phase-heads -- {} (mandatory: True)
dc0947a82db884575bb76ea10ac97b08536bfa03 public
$ rm bundle
$ hg bundle --base 'B + C' -r 'D + E' bundle
2 changesets found
$ hg debugbundle bundle
Stream params: {Compression: BZ}
changegroup -- {nbchanges: 2, targetphase: 2, version: 02} (mandatory: True)
4e4f9194f9f181c57f62e823e8bdfa46ab9e4ff4
03ca77807e919db8807c3749086dc36fb478cac0
cache:rev-branch-cache -- {} (mandatory: False)
phase-heads -- {} (mandatory: True)
03ca77807e919db8807c3749086dc36fb478cac0 draft
$ rm bundle