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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
Martin von Zweigbergk - - Load All Authors

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test-obshistory.t
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This test file test the various messages when accessing obsolete
revisions.
Global setup
============
$ . $TESTDIR/testlib/obsmarker-common.sh
$ cat >> $HGRCPATH <<EOF
> [ui]
> interactive = true
> [phases]
> publish=False
> [experimental]
> evolution.createmarkers = yes
> evolution.effect-flags = yes
> EOF
Test output on amended commit
=============================
Test setup
----------
$ hg init $TESTTMP/local-amend
$ cd $TESTTMP/local-amend
$ mkcommit ROOT
$ mkcommit A0
$ echo 42 >> A0
$ hg commit --amend -m "A1
>
> Better commit message"
$ hg log --hidden -G
@ changeset: 2:4ae3a4151de9
| tag: tip
| parent: 0:ea207398892e
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: A1
|
| x changeset: 1:471f378eab4c
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| obsolete: rewritten using amend as 2:4ae3a4151de9
| summary: A0
|
o changeset: 0:ea207398892e
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: ROOT
Actual test
-----------
$ hg update 471f378eab4c
abort: hidden revision '471f378eab4c' was rewritten as: 4ae3a4151de9!
(use --hidden to access hidden revisions)
[255]
$ hg update --hidden "desc(A0)"
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
updated to hidden changeset 471f378eab4c
(hidden revision '471f378eab4c' was rewritten as: 4ae3a4151de9)
Test output with pruned commit
==============================
Test setup
----------
$ hg init $TESTTMP/local-prune
$ cd $TESTTMP/local-prune
$ mkcommit ROOT
$ mkcommit A0 # 0
$ mkcommit B0 # 1
$ hg log --hidden -G
@ changeset: 2:0dec01379d3b
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: B0
|
o changeset: 1:471f378eab4c
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: A0
|
o changeset: 0:ea207398892e
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: ROOT
$ hg debugobsolete --record-parents `getid 'desc(B0)'`
obsoleted 1 changesets
$ hg log --hidden -G
@ changeset: 2:0dec01379d3b
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| obsolete: pruned
| summary: B0
|
o changeset: 1:471f378eab4c
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: A0
|
o changeset: 0:ea207398892e
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: ROOT
Actual test
-----------
$ hg up 1
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg up 0dec01379d3b
abort: hidden revision '0dec01379d3b' is pruned!
(use --hidden to access hidden revisions)
[255]
$ hg up --hidden -r 'desc(B0)'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
updated to hidden changeset 0dec01379d3b
(hidden revision '0dec01379d3b' is pruned)
Test output with splitted commit
================================
Test setup
----------
$ hg init $TESTTMP/local-split
$ cd $TESTTMP/local-split
$ mkcommit ROOT
$ echo 42 >> a
$ echo 43 >> b
$ hg commit -A -m "A0"
adding a
adding b
$ hg log --hidden -G
@ changeset: 1:471597cad322
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: A0
|
o changeset: 0:ea207398892e
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: ROOT
# Simulate a split
$ hg up 0
0 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ echo 42 >> a
$ hg commit -A -m "A0"
adding a
created new head
$ echo 43 >> b
$ hg commit -A -m "A0"
adding b
$ hg debugobsolete `getid '1'` `getid '2'` `getid '3'`
obsoleted 1 changesets
$ hg log --hidden -G
@ changeset: 3:f257fde29c7a
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: A0
|
o changeset: 2:337fec4d2edc
| parent: 0:ea207398892e
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: A0
|
| x changeset: 1:471597cad322
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| obsolete: split as 2:337fec4d2edc, 3:f257fde29c7a
| summary: A0
|
o changeset: 0:ea207398892e
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: ROOT
Actual test
-----------
$ hg update 471597cad322
abort: hidden revision '471597cad322' was split as: 337fec4d2edc, f257fde29c7a!
(use --hidden to access hidden revisions)
[255]
$ hg update --hidden 'min(desc(A0))'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
updated to hidden changeset 471597cad322
(hidden revision '471597cad322' was split as: 337fec4d2edc, f257fde29c7a)
Test output with lots of splitted commit
========================================
Test setup
----------
$ hg init $TESTTMP/local-lots-split
$ cd $TESTTMP/local-lots-split
$ mkcommit ROOT
$ echo 42 >> a
$ echo 43 >> b
$ echo 44 >> c
$ echo 45 >> d
$ hg commit -A -m "A0"
adding a
adding b
adding c
adding d
$ hg log --hidden -G
@ changeset: 1:de7290d8b885
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: A0
|
o changeset: 0:ea207398892e
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: ROOT
# Simulate a split
$ hg up 0
0 files updated, 0 files merged, 4 files removed, 0 files unresolved
$ echo 42 >> a
$ hg commit -A -m "A0"
adding a
created new head
$ echo 43 >> b
$ hg commit -A -m "A0"
adding b
$ echo 44 >> c
$ hg commit -A -m "A0"
adding c
$ echo 45 >> d
$ hg commit -A -m "A0"
adding d
$ hg debugobsolete `getid '1'` `getid '2'` `getid '3'` `getid '4'` `getid '5'`
obsoleted 1 changesets
$ hg log --hidden -G
@ changeset: 5:c7f044602e9b
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: A0
|
o changeset: 4:1ae8bc733a14
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: A0
|
o changeset: 3:f257fde29c7a
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: A0
|
o changeset: 2:337fec4d2edc
| parent: 0:ea207398892e
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: A0
|
| x changeset: 1:de7290d8b885
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| obsolete: split as 2:337fec4d2edc, 3:f257fde29c7a, 4:1ae8bc733a14, 5:c7f044602e9b
| summary: A0
|
o changeset: 0:ea207398892e
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: ROOT
Actual test
-----------
$ hg update de7290d8b885
abort: hidden revision 'de7290d8b885' was split as: 337fec4d2edc, f257fde29c7a and 2 more!
(use --hidden to access hidden revisions)
[255]
$ hg update --hidden 'min(desc(A0))'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
updated to hidden changeset de7290d8b885
(hidden revision 'de7290d8b885' was split as: 337fec4d2edc, f257fde29c7a and 2 more)
Test output with folded commit
==============================
Test setup
----------
$ hg init $TESTTMP/local-fold
$ cd $TESTTMP/local-fold
$ mkcommit ROOT
$ mkcommit A0
$ mkcommit B0
$ hg log --hidden -G
@ changeset: 2:0dec01379d3b
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: B0
|
o changeset: 1:471f378eab4c
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: A0
|
o changeset: 0:ea207398892e
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: ROOT
# Simulate a fold
$ hg up 0
0 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ echo "A0" > A0
$ echo "B0" > B0
$ hg add A0 B0
$ hg commit -m "C0"
created new head
$ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(C0)'`
obsoleted 1 changesets
1 new orphan changesets
$ hg debugobsolete `getid 'desc(B0)'` `getid 'desc(C0)'`
obsoleted 1 changesets
$ hg log --hidden -G
@ changeset: 3:eb5a0daa2192
| tag: tip
| parent: 0:ea207398892e
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: C0
|
| x changeset: 2:0dec01379d3b
| | user: test
| | date: Thu Jan 01 00:00:00 1970 +0000
| | obsolete: rewritten as 3:eb5a0daa2192
| | summary: B0
| |
| x changeset: 1:471f378eab4c
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| obsolete: rewritten as 3:eb5a0daa2192
| summary: A0
|
o changeset: 0:ea207398892e
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: ROOT
Actual test
-----------
$ hg update 471f378eab4c
abort: hidden revision '471f378eab4c' was rewritten as: eb5a0daa2192!
(use --hidden to access hidden revisions)
[255]
$ hg update --hidden 'desc(A0)'
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
updated to hidden changeset 471f378eab4c
(hidden revision '471f378eab4c' was rewritten as: eb5a0daa2192)
$ hg update 0dec01379d3b
abort: hidden revision '0dec01379d3b' was rewritten as: eb5a0daa2192!
(use --hidden to access hidden revisions)
[255]
$ hg update --hidden 'desc(B0)'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
updated to hidden changeset 0dec01379d3b
(hidden revision '0dec01379d3b' was rewritten as: eb5a0daa2192)
Test output with divergence
===========================
Test setup
----------
$ hg init $TESTTMP/local-divergence
$ cd $TESTTMP/local-divergence
$ mkcommit ROOT
$ mkcommit A0
$ hg commit --amend -m "A1"
$ hg log --hidden -G
@ changeset: 2:fdf9bde5129a
| tag: tip
| parent: 0:ea207398892e
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: A1
|
| x changeset: 1:471f378eab4c
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| obsolete: rewritten using amend as 2:fdf9bde5129a
| summary: A0
|
o changeset: 0:ea207398892e
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: ROOT
$ hg update --hidden 'desc(A0)'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
updated to hidden changeset 471f378eab4c
(hidden revision '471f378eab4c' was rewritten as: fdf9bde5129a)
$ hg commit --amend -m "A2"
2 new content-divergent changesets
$ hg log --hidden -G
@ changeset: 3:65b757b745b9
| tag: tip
| parent: 0:ea207398892e
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| instability: content-divergent
| summary: A2
|
| * changeset: 2:fdf9bde5129a
|/ parent: 0:ea207398892e
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| instability: content-divergent
| summary: A1
|
| x changeset: 1:471f378eab4c
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| obsolete: rewritten using amend as 2:fdf9bde5129a
| obsolete: rewritten using amend as 3:65b757b745b9
| summary: A0
|
o changeset: 0:ea207398892e
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: ROOT
Actual test
-----------
$ hg update 471f378eab4c
abort: hidden revision '471f378eab4c' has diverged!
(use --hidden to access hidden revisions)
[255]
$ hg update --hidden 'desc(A0)'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
updated to hidden changeset 471f378eab4c
(hidden revision '471f378eab4c' has diverged)
Test output with amended + folded commit
========================================
Test setup
----------
$ hg init $TESTTMP/local-amend-fold
$ cd $TESTTMP/local-amend-fold
$ mkcommit ROOT
$ mkcommit A0
$ mkcommit B0
$ hg commit --amend -m "B1"
$ hg log --hidden -G
@ changeset: 3:b7ea6d14e664
| tag: tip
| parent: 1:471f378eab4c
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: B1
|
| x changeset: 2:0dec01379d3b
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| obsolete: rewritten using amend as 3:b7ea6d14e664
| summary: B0
|
o changeset: 1:471f378eab4c
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: A0
|
o changeset: 0:ea207398892e
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: ROOT
# Simulate a fold
$ hg up 0
0 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ echo "A0" > A0
$ echo "B0" > B0
$ hg add A0 B0
$ hg commit -m "C0"
created new head
$ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(C0)'`
obsoleted 1 changesets
1 new orphan changesets
$ hg debugobsolete `getid 'desc(B1)'` `getid 'desc(C0)'`
obsoleted 1 changesets
$ hg log --hidden -G
@ changeset: 4:eb5a0daa2192
| tag: tip
| parent: 0:ea207398892e
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: C0
|
| x changeset: 3:b7ea6d14e664
| | parent: 1:471f378eab4c
| | user: test
| | date: Thu Jan 01 00:00:00 1970 +0000
| | obsolete: rewritten as 4:eb5a0daa2192
| | summary: B1
| |
| | x changeset: 2:0dec01379d3b
| |/ user: test
| | date: Thu Jan 01 00:00:00 1970 +0000
| | obsolete: rewritten using amend as 3:b7ea6d14e664
| | summary: B0
| |
| x changeset: 1:471f378eab4c
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| obsolete: rewritten as 4:eb5a0daa2192
| summary: A0
|
o changeset: 0:ea207398892e
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: ROOT
Actual test
-----------
$ hg update 471f378eab4c
abort: hidden revision '471f378eab4c' was rewritten as: eb5a0daa2192!
(use --hidden to access hidden revisions)
[255]
$ hg update --hidden 'desc(A0)'
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
updated to hidden changeset 471f378eab4c
(hidden revision '471f378eab4c' was rewritten as: eb5a0daa2192)
$ hg update --hidden 0dec01379d3b
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
updated to hidden changeset 0dec01379d3b
(hidden revision '0dec01379d3b' was rewritten as: eb5a0daa2192)
$ hg update 0dec01379d3b
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg update --hidden 'desc(B0)'
0 files updated, 0 files merged, 0 files removed, 0 files unresolved