view tests/test-revset2.t @ 42044:bb271ec2fbfb

compression: introduce a `storage.revlog.zstd.level` configuration

This option control the zstd compression level used when compressing revlog
chunk. The usage of zstd for revlog compression has not graduated from
experimental yet, but we intend to fix that soon.

The option name for the compression level is more straight forward to pick, so
this changesets comes first.  Having a dedicated option for each compression
engine is useful because they don't support the same range of values.

I ran the same measurement as for the zlib compression level (in the parent
changesets). The variation in repository size is stay mostly in the same (small)
range. The "read/write" performance see smallish variation, but are overall much
better than zlib. Write performance show the same tend of having better write
performance for when reaching high-end compression.

Again, we don't intend to change the default zstd compression level (currently:
3) in this series. However this is worth investigating in the future.

The Performance comparison of zlib vs zstd is quite impressive. The repository
size stay in the same range, but the performance are much better in all
situations.

Comparison summary
==================

We are looking at:
- performance range for zlib
- performance range for zstd
- comparison of default zstd (level-3) to default zlib (level 6)
- comparison of the slowest zstd time to the fastest zlib time

Read performance:
-----------------
          |           zlib          |           zstd          | cmp | f2s
mercurial |   0.170159 -   0.189219 |   0.144127 -   0.149624 | 80% | 88%
pypy      |   2.679217 -   2.768691 |   1.532317 -   1.705044 | 60% | 63%
netbeans  | 122.477027 - 141.620281 |  72.996346 -  89.731560 | 58% | 73%
mozilla   | 147.867662 - 170.572118 |  91.700995 - 105.853099 | 56% | 71%

Write performance:
------------------
          |           zlib          |           zstd          | cmp | f2s
mercurial |  53.250304 - 56.2936129 |  40.877025 -  45.677286 | 75% | 86%
pypy      | 460.721984 - 476.589918 | 270.545409 - 301.002219 | 63% | 65%
netbeans  | 520.560316 - 715.930400 | 370.356311 - 428.329652 | 55% | 82%
mozilla   | 739.803002 - 987.056093 | 505.152906 - 591.930683 | 57% | 80%

Raw data
--------

repo      alg lvl  .hg/store size  00manifest.d read       write

mercurial zlib  1      49,402,813     5,963,475   0.170159  53.250304
mercurial zlib  6      47,197,397     5,875,730   0.182820  56.264320
mercurial zlib  9      47,121,596     5,849,781   0.189219  56.293612

mercurial zstd  1      49,737,084     5,966,355   0.144127  40.877025
mercurial zstd  3      48,961,867     5,895,208   0.146376  42.268142
mercurial zstd  5      48,200,592     5,938,676   0.149624  43.162875
mercurial zstd 10      47,833,520     5,913,353   0.145185  44.012489
mercurial zstd 15      47,314,604     5,728,679   0.147686  45.677286
mercurial zstd 20      47,330,502     5,830,539   0.145789  45.025407
mercurial zstd 22      47,330,076     5,830,539   0.143996  44.690460


pypy      zlib  1     370,830,572    28,462,425   2.679217 460.721984
pypy      zlib  6     340,112,317    27,648,747   2.768691 467.537158
pypy      zlib  9     338,360,736    27,639,003   2.763495 476.589918

pypy      zstd  1     362,377,479    27,916,214   1.532317 270.545409
pypy      zstd  3     354,137,693    27,905,988   1.686718 294.951509
pypy      zstd  5     342,640,043    27,655,774   1.705044 301.002219
pypy      zstd 10     334,224,327    27,164,493   1.567287 285.186239
pypy      zstd 15     329,000,363    26,645,965   1.637729 299.561332
pypy      zstd 20     324,534,039    26,199,547   1.526813 302.149827
pypy      zstd 22     324,530,595    26,198,932   1.525718 307.821218


netbeans  zlib  1   1,281,847,810   165,495,457 122.477027 520.560316
netbeans  zlib  6   1,205,284,353   159,161,207 139.876147 715.930400
netbeans  zlib  9   1,197,135,671   155,034,586 141.620281 678.297064

netbeans  zstd  1   1,259,581,737   160,840,613  72.996346 370.356311
netbeans  zstd  3   1,232,978,122   157,691,551  81.622317 396.733087
netbeans  zstd  5   1,208,034,075   160,246,880  83.080549 364.342626
netbeans  zstd 10   1,188,624,176   156,083,417  79.323935 403.594602
netbeans  zstd 15   1,176,973,589   153,859,477  89.731560 428.329652
netbeans  zstd 20   1,162,958,258   151,147,535  82.842667 392.335349
netbeans  zstd 22   1,162,707,029   151,150,220  82.565695 402.840655


mozilla   zlib  1   2,775,497,186   298,527,987 147.867662 751.263721
mozilla   zlib  6   2,596,856,420   286,597,671 170.572118 987.056093
mozilla   zlib  9   2,587,542,494   287,018,264 163.622338 739.803002

mozilla   zstd  1   2,723,159,348   286,617,532  91.700995 570.042751
mozilla   zstd  3   2,665,055,001   286,152,013  95.240155 561.412805
mozilla   zstd  5   2,607,819,817   288,060,030 101.978048 505.152906
mozilla   zstd 10   2,558,761,085   283,967,648 104.113481 497.771202
mozilla   zstd 15   2,526,216,060   275,581,300 105.853099 591.930683
mozilla   zstd 20   2,485,114,806   266,478,859  95.268795 576.515389
mozilla   zstd 22   2,484,869,080   266,456,505  94.429282 572.785537

  $ HGENCODING=utf-8
  $ export HGENCODING
  $ cat >> $HGRCPATH << EOF
  > [extensions]
  > drawdag=$TESTDIR/drawdag.py
  > EOF

  $ try() {
  >   hg debugrevspec --debug "$@"
  > }

  $ log() {
  >   hg log --template '{rev}\n' -r "$1"
  > }

  $ hg init repo
  $ cd repo

  $ echo a > a
  $ hg branch a
  marked working directory as branch a
  (branches are permanent and global, did you want a bookmark?)
  $ hg ci -Aqm0

  $ echo b > b
  $ hg branch b
  marked working directory as branch b
  $ hg ci -Aqm1

  $ rm a
  $ hg branch a-b-c-
  marked working directory as branch a-b-c-
  $ hg ci -Aqm2 -u Bob

  $ hg log -r "extra('branch', 'a-b-c-')" --template '{rev}\n'
  2
  $ hg log -r "extra('branch')" --template '{rev}\n'
  0
  1
  2
  $ hg log -r "extra('branch', 're:a')" --template '{rev} {branch}\n'
  0 a
  2 a-b-c-

  $ hg co 1
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg branch +a+b+c+
  marked working directory as branch +a+b+c+
  $ hg ci -Aqm3

  $ hg co 2  # interleave
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo bb > b
  $ hg branch -- -a-b-c-
  marked working directory as branch -a-b-c-
  $ hg ci -Aqm4 -d "May 12 2005"

  $ hg co 3
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg branch !a/b/c/
  marked working directory as branch !a/b/c/
  $ hg ci -Aqm"5 bug"

  $ hg merge 4
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg branch _a_b_c_
  marked working directory as branch _a_b_c_
  $ hg ci -Aqm"6 issue619"

  $ hg branch .a.b.c.
  marked working directory as branch .a.b.c.
  $ hg ci -Aqm7

  $ hg branch all
  marked working directory as branch all

  $ hg co 4
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg branch é
  marked working directory as branch \xc3\xa9 (esc)
  $ hg ci -Aqm9

  $ hg tag -r6 1.0
  $ hg bookmark -r6 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

  $ hg clone --quiet -U -r 7 . ../remote1
  $ hg clone --quiet -U -r 8 . ../remote2
  $ echo "[paths]" >> .hg/hgrc
  $ echo "default = ../remote1" >> .hg/hgrc

test subtracting something from an addset

  $ log '(outgoing() or removes(a)) - removes(a)'
  8
  9

test intersecting something with an addset

  $ log 'parents(outgoing() or removes(a))'
  1
  4
  5
  8

test that `or` operation combines elements in the right order:

  $ log '3:4 or 2:5'
  3
  4
  2
  5
  $ log '3:4 or 5:2'
  3
  4
  5
  2
  $ log 'sort(3:4 or 2:5)'
  2
  3
  4
  5
  $ log 'sort(3:4 or 5:2)'
  2
  3
  4
  5

test that more than one `-r`s are combined in the right order and deduplicated:

  $ hg log -T '{rev}\n' -r 3 -r 3 -r 4 -r 5:2 -r 'ancestors(4)'
  3
  4
  5
  2
  0
  1

test that `or` operation skips duplicated revisions from right-hand side

  $ try 'reverse(1::5) or ancestors(4)'
  (or
    (list
      (func
        (symbol 'reverse')
        (dagrange
          (symbol '1')
          (symbol '5')))
      (func
        (symbol 'ancestors')
        (symbol '4'))))
  * set:
  <addset
    <baseset- [1, 3, 5]>,
    <generatorsetdesc+>>
  5
  3
  1
  0
  2
  4
  $ try 'sort(ancestors(4) or reverse(1::5))'
  (func
    (symbol 'sort')
    (or
      (list
        (func
          (symbol 'ancestors')
          (symbol '4'))
        (func
          (symbol 'reverse')
          (dagrange
            (symbol '1')
            (symbol '5'))))))
  * set:
  <addset+
    <generatorsetdesc+>,
    <baseset- [1, 3, 5]>>
  0
  1
  2
  3
  4
  5

test optimization of trivial `or` operation

  $ try --optimize '0|(1)|"2"|-2|tip|null'
  (or
    (list
      (symbol '0')
      (group
        (symbol '1'))
      (string '2')
      (negate
        (symbol '2'))
      (symbol 'tip')
      (symbol 'null')))
  * optimized:
  (func
    (symbol '_list')
    (string '0\x001\x002\x00-2\x00tip\x00null'))
  * set:
  <baseset [0, 1, 2, 8, 9, -1]>
  0
  1
  2
  8
  9
  -1

  $ try --optimize '0|1|2:3'
  (or
    (list
      (symbol '0')
      (symbol '1')
      (range
        (symbol '2')
        (symbol '3'))))
  * optimized:
  (or
    (list
      (func
        (symbol '_list')
        (string '0\x001'))
      (range
        (symbol '2')
        (symbol '3'))))
  * set:
  <addset
    <baseset [0, 1]>,
    <spanset+ 2:4>>
  0
  1
  2
  3

  $ try --optimize '0:1|2|3:4|5|6'
  (or
    (list
      (range
        (symbol '0')
        (symbol '1'))
      (symbol '2')
      (range
        (symbol '3')
        (symbol '4'))
      (symbol '5')
      (symbol '6')))
  * optimized:
  (or
    (list
      (range
        (symbol '0')
        (symbol '1'))
      (symbol '2')
      (range
        (symbol '3')
        (symbol '4'))
      (func
        (symbol '_list')
        (string '5\x006'))))
  * set:
  <addset
    <addset
      <spanset+ 0:2>,
      <baseset [2]>>,
    <addset
      <spanset+ 3:5>,
      <baseset [5, 6]>>>
  0
  1
  2
  3
  4
  5
  6

unoptimized `or` looks like this

  $ try --no-optimized -p analyzed '0|1|2|3|4'
  * analyzed:
  (or
    (list
      (symbol '0')
      (symbol '1')
      (symbol '2')
      (symbol '3')
      (symbol '4')))
  * set:
  <addset
    <addset
      <baseset [0]>,
      <baseset [1]>>,
    <addset
      <baseset [2]>,
      <addset
        <baseset [3]>,
        <baseset [4]>>>>
  0
  1
  2
  3
  4

test that `_list` should be narrowed by provided `subset`

  $ log '0:2 and (null|1|2|3)'
  1
  2

test that `_list` should remove duplicates

  $ log '0|1|2|1|2|-1|tip'
  0
  1
  2
  9

test unknown revision in `_list`

  $ log '0|unknown'
  abort: unknown revision 'unknown'!
  [255]

test integer range in `_list`

  $ log '-1|-10'
  9
  0

  $ log '-10|-11'
  abort: unknown revision '-11'!
  [255]

  $ log '9|10'
  abort: unknown revision '10'!
  [255]

test '0000' != '0' in `_list`

  $ log '0|0000'
  0
  -1

test ',' in `_list`
  $ log '0,1'
  hg: parse error: can't use a list in this context
  (see 'hg help "revsets.x or y"')
  [255]
  $ try '0,1,2'
  (list
    (symbol '0')
    (symbol '1')
    (symbol '2'))
  hg: parse error: can't use a list in this context
  (see 'hg help "revsets.x or y"')
  [255]

test that chained `or` operations make balanced addsets

  $ try '0:1|1:2|2:3|3:4|4:5'
  (or
    (list
      (range
        (symbol '0')
        (symbol '1'))
      (range
        (symbol '1')
        (symbol '2'))
      (range
        (symbol '2')
        (symbol '3'))
      (range
        (symbol '3')
        (symbol '4'))
      (range
        (symbol '4')
        (symbol '5'))))
  * set:
  <addset
    <addset
      <spanset+ 0:2>,
      <spanset+ 1:3>>,
    <addset
      <spanset+ 2:4>,
      <addset
        <spanset+ 3:5>,
        <spanset+ 4:6>>>>
  0
  1
  2
  3
  4
  5

no crash by empty group "()" while optimizing `or` operations

  $ try --optimize '0|()'
  (or
    (list
      (symbol '0')
      (group
        None)))
  * optimized:
  (or
    (list
      (symbol '0')
      None))
  hg: parse error: missing argument
  [255]

test that chained `or` operations never eat up stack (issue4624)
(uses `0:1` instead of `0` to avoid future optimization of trivial revisions)

  $ hg log -T '{rev}\n' -r `"$PYTHON" -c "print('+'.join(['0:1'] * 500))"`
  0
  1

test that repeated `-r` options never eat up stack (issue4565)
(uses `-r 0::1` to avoid possible optimization at old-style parser)

  $ hg log -T '{rev}\n' `"$PYTHON" -c "for i in range(500): print('-r 0::1 ')"`
  0
  1

check that conversion to only works
  $ try --optimize '::3 - ::1'
  (minus
    (dagrangepre
      (symbol '3'))
    (dagrangepre
      (symbol '1')))
  * optimized:
  (func
    (symbol 'only')
    (list
      (symbol '3')
      (symbol '1')))
  * set:
  <baseset+ [3]>
  3
  $ try --optimize 'ancestors(1) - ancestors(3)'
  (minus
    (func
      (symbol 'ancestors')
      (symbol '1'))
    (func
      (symbol 'ancestors')
      (symbol '3')))
  * optimized:
  (func
    (symbol 'only')
    (list
      (symbol '1')
      (symbol '3')))
  * set:
  <baseset+ []>
  $ try --optimize 'not ::2 and ::6'
  (and
    (not
      (dagrangepre
        (symbol '2')))
    (dagrangepre
      (symbol '6')))
  * optimized:
  (func
    (symbol 'only')
    (list
      (symbol '6')
      (symbol '2')))
  * set:
  <baseset+ [3, 4, 5, 6]>
  3
  4
  5
  6
  $ try --optimize 'ancestors(6) and not ancestors(4)'
  (and
    (func
      (symbol 'ancestors')
      (symbol '6'))
    (not
      (func
        (symbol 'ancestors')
        (symbol '4'))))
  * optimized:
  (func
    (symbol 'only')
    (list
      (symbol '6')
      (symbol '4')))
  * set:
  <baseset+ [3, 5, 6]>
  3
  5
  6

no crash by empty group "()" while optimizing to "only()"

  $ try --optimize '::1 and ()'
  (and
    (dagrangepre
      (symbol '1'))
    (group
      None))
  * optimized:
  (andsmally
    (func
      (symbol 'ancestors')
      (symbol '1'))
    None)
  hg: parse error: missing argument
  [255]

optimization to only() works only if ancestors() takes only one argument

  $ hg debugrevspec -p optimized 'ancestors(6) - ancestors(4, 1)'
  * optimized:
  (difference
    (func
      (symbol 'ancestors')
      (symbol '6'))
    (func
      (symbol 'ancestors')
      (list
        (symbol '4')
        (symbol '1'))))
  0
  1
  3
  5
  6
  $ hg debugrevspec -p optimized 'ancestors(6, 1) - ancestors(4)'
  * optimized:
  (difference
    (func
      (symbol 'ancestors')
      (list
        (symbol '6')
        (symbol '1')))
    (func
      (symbol 'ancestors')
      (symbol '4')))
  5
  6

optimization disabled if keyword arguments passed (because we're too lazy
to support it)

  $ hg debugrevspec -p optimized 'ancestors(set=6) - ancestors(set=4)'
  * optimized:
  (difference
    (func
      (symbol 'ancestors')
      (keyvalue
        (symbol 'set')
        (symbol '6')))
    (func
      (symbol 'ancestors')
      (keyvalue
        (symbol 'set')
        (symbol '4'))))
  3
  5
  6

invalid function call should not be optimized to only()

  $ log '"ancestors"(6) and not ancestors(4)'
  hg: parse error: not a symbol
  [255]

  $ log 'ancestors(6) and not "ancestors"(4)'
  hg: parse error: not a symbol
  [255]

test empty string

  $ log ''
  hg: parse error: empty query
  [255]
  $ log 'parents("")'
  hg: parse error: empty string is not a valid revision
  [255]

test empty revset
  $ hg log 'none()'

we can use patterns when searching for tags

  $ log 'tag("1..*")'
  abort: tag '1..*' does not exist!
  [255]
  $ log 'tag("re:1..*")'
  6
  $ log 'tag("re:[0-9].[0-9]")'
  6
  $ log 'tag("literal:1.0")'
  6
  $ log 'tag("re:0..*")'

  $ log 'tag(unknown)'
  abort: tag 'unknown' does not exist!
  [255]
  $ log 'tag("re:unknown")'
  $ log 'present(tag("unknown"))'
  $ log 'present(tag("re:unknown"))'
  $ log 'branch(unknown)'
  abort: unknown revision 'unknown'!
  [255]
  $ log 'branch("literal:unknown")'
  abort: branch 'unknown' does not exist!
  [255]
  $ log 'branch("re:unknown")'
  $ log 'present(branch("unknown"))'
  $ log 'present(branch("re:unknown"))'
  $ log 'user(bob)'
  2

  $ log '4::8'
  4
  8
  $ log '4:8'
  4
  5
  6
  7
  8

  $ log 'sort(!merge() & (modifies(b) | user(bob) | keyword(bug) | keyword(issue) & 1::9), "-date")'
  4
  2
  5

  $ log 'not 0 and 0:2'
  1
  2
  $ log 'not 1 and 0:2'
  0
  2
  $ log 'not 2 and 0:2'
  0
  1
  $ log '(1 and 2)::'
  $ log '(1 and 2):'
  $ log '(1 and 2):3'
  $ log 'sort(head(), -rev)'
  9
  7
  6
  5
  4
  3
  2
  1
  0
  $ log '4::8 - 8'
  4

matching() should preserve the order of the input set:

  $ log '(2 or 3 or 1) and matching(1 or 2 or 3)'
  2
  3
  1

  $ log 'named("unknown")'
  abort: namespace 'unknown' does not exist!
  [255]
  $ log 'named("re:unknown")'
  $ log 'present(named("unknown"))'
  $ log 'present(named("re:unknown"))'

  $ log 'tag()'
  6
  $ log 'named("tags")'
  6

issue2437

  $ log '3 and p1(5)'
  3
  $ log '4 and p2(6)'
  4
  $ log '1 and parents(:2)'
  1
  $ log '2 and children(1:)'
  2
  $ log 'roots(all()) or roots(all())'
  0
  $ hg debugrevspec 'roots(all()) or roots(all())'
  0
  $ log 'heads(branch(é)) or heads(branch(é))'
  9
  $ log 'ancestors(8) and (heads(branch("-a-b-c-")) or heads(branch(é)))'
  4

issue2654: report a parse error if the revset was not completely parsed

  $ log '1 OR 2'
  hg: parse error at 2: invalid token
  (1 OR 2
     ^ here)
  [255]

or operator should preserve ordering:
  $ log 'reverse(2::4) or tip'
  4
  2
  9

parentrevspec

  $ log 'merge()^0'
  6
  $ log 'merge()^'
  5
  $ log 'merge()^1'
  5
  $ log 'merge()^2'
  4
  $ log '(not merge())^2'
  $ log 'merge()^^'
  3
  $ log 'merge()^1^'
  3
  $ log 'merge()^^^'
  1

  $ hg debugrevspec -s '(merge() | 0)~-1'
  * set:
  <baseset+ [1, 7]>
  1
  7
  $ log 'merge()~-1'
  7
  $ log 'tip~-1'
  $ log '(tip | merge())~-1'
  7
  $ log 'merge()~0'
  6
  $ log 'merge()~1'
  5
  $ log 'merge()~2'
  3
  $ log 'merge()~2^1'
  1
  $ log 'merge()~3'
  1

  $ log '(-3:tip)^'
  4
  6
  8

  $ log 'tip^foo'
  hg: parse error: ^ expects a number 0, 1, or 2
  [255]

  $ log 'branchpoint()~-1'
  abort: revision in set has more than one child!
  [255]

Bogus function gets suggestions
  $ log 'add()'
  hg: parse error: unknown identifier: add
  (did you mean adds?)
  [255]
  $ log 'added()'
  hg: parse error: unknown identifier: added
  (did you mean adds?)
  [255]
  $ log 'remo()'
  hg: parse error: unknown identifier: remo
  (did you mean one of remote, removes?)
  [255]
  $ log 'babar()'
  hg: parse error: unknown identifier: babar
  [255]

Bogus function with a similar internal name doesn't suggest the internal name
  $ log 'matches()'
  hg: parse error: unknown identifier: matches
  (did you mean matching?)
  [255]

Undocumented functions aren't suggested as similar either
  $ log 'tagged2()'
  hg: parse error: unknown identifier: tagged2
  [255]

multiple revspecs

  $ hg log -r 'tip~1:tip' -r 'tip~2:tip~1' --template '{rev}\n'
  8
  9
  4
  5
  6
  7

test usage in revpair (with "+")

(real pair)

  $ hg diff -r 'tip^^' -r 'tip'
  diff -r 2326846efdab -r 24286f4ae135 .hgtags
  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  +++ b/.hgtags	Thu Jan 01 00:00:00 1970 +0000
  @@ -0,0 +1,1 @@
  +e0cc66ef77e8b6f711815af4e001a6594fde3ba5 1.0
  $ hg diff -r 'tip^^::tip'
  diff -r 2326846efdab -r 24286f4ae135 .hgtags
  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  +++ b/.hgtags	Thu Jan 01 00:00:00 1970 +0000
  @@ -0,0 +1,1 @@
  +e0cc66ef77e8b6f711815af4e001a6594fde3ba5 1.0

(single rev)

  $ hg diff -r 'tip^' -r 'tip^'
  $ hg diff -r 'tip^:tip^'

(single rev that does not looks like a range)

  $ hg diff -r 'tip^::tip^ or tip^'
  diff -r d5d0dcbdc4d9 .hgtags
  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  +++ b/.hgtags	* (glob)
  @@ -0,0 +1,1 @@
  +e0cc66ef77e8b6f711815af4e001a6594fde3ba5 1.0
  $ hg diff -r 'tip^ or tip^'
  diff -r d5d0dcbdc4d9 .hgtags
  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  +++ b/.hgtags	* (glob)
  @@ -0,0 +1,1 @@
  +e0cc66ef77e8b6f711815af4e001a6594fde3ba5 1.0

(no rev)

  $ hg diff -r 'author("babar") or author("celeste")'
  abort: empty revision range
  [255]

aliases:

  $ echo '[revsetalias]' >> .hg/hgrc
  $ echo 'm = merge()' >> .hg/hgrc
(revset aliases can override builtin revsets)
  $ echo 'p2($1) = p1($1)' >> .hg/hgrc
  $ echo 'sincem = descendants(m)' >> .hg/hgrc
  $ echo 'd($1) = reverse(sort($1, date))' >> .hg/hgrc
  $ echo 'rs(ARG1, ARG2) = reverse(sort(ARG1, ARG2))' >> .hg/hgrc
  $ echo 'rs4(ARG1, ARGA, ARGB, ARG2) = reverse(sort(ARG1, ARG2))' >> .hg/hgrc

  $ try m
  (symbol 'm')
  * expanded:
  (func
    (symbol 'merge')
    None)
  * set:
  <filteredset
    <fullreposet+ 0:10>,
    <merge>>
  6

  $ HGPLAIN=1
  $ export HGPLAIN
  $ try m
  (symbol 'm')
  abort: unknown revision 'm'!
  [255]

  $ HGPLAINEXCEPT=revsetalias
  $ export HGPLAINEXCEPT
  $ try m
  (symbol 'm')
  * expanded:
  (func
    (symbol 'merge')
    None)
  * set:
  <filteredset
    <fullreposet+ 0:10>,
    <merge>>
  6

  $ unset HGPLAIN
  $ unset HGPLAINEXCEPT

  $ try 'p2(.)'
  (func
    (symbol 'p2')
    (symbol '.'))
  * expanded:
  (func
    (symbol 'p1')
    (symbol '.'))
  * set:
  <baseset+ [8]>
  8

  $ HGPLAIN=1
  $ export HGPLAIN
  $ try 'p2(.)'
  (func
    (symbol 'p2')
    (symbol '.'))
  * set:
  <baseset+ []>

  $ HGPLAINEXCEPT=revsetalias
  $ export HGPLAINEXCEPT
  $ try 'p2(.)'
  (func
    (symbol 'p2')
    (symbol '.'))
  * expanded:
  (func
    (symbol 'p1')
    (symbol '.'))
  * set:
  <baseset+ [8]>
  8

  $ unset HGPLAIN
  $ unset HGPLAINEXCEPT

test alias recursion

  $ try sincem
  (symbol 'sincem')
  * expanded:
  (func
    (symbol 'descendants')
    (func
      (symbol 'merge')
      None))
  * set:
  <generatorsetasc+>
  6
  7

test infinite recursion

  $ echo 'recurse1 = recurse2' >> .hg/hgrc
  $ echo 'recurse2 = recurse1' >> .hg/hgrc
  $ try recurse1
  (symbol 'recurse1')
  hg: parse error: infinite expansion of revset alias "recurse1" detected
  [255]

  $ echo 'level1($1, $2) = $1 or $2' >> .hg/hgrc
  $ echo 'level2($1, $2) = level1($2, $1)' >> .hg/hgrc
  $ try "level2(level1(1, 2), 3)"
  (func
    (symbol 'level2')
    (list
      (func
        (symbol 'level1')
        (list
          (symbol '1')
          (symbol '2')))
      (symbol '3')))
  * expanded:
  (or
    (list
      (symbol '3')
      (or
        (list
          (symbol '1')
          (symbol '2')))))
  * set:
  <addset
    <baseset [3]>,
    <baseset [1, 2]>>
  3
  1
  2

test nesting and variable passing

  $ echo 'nested($1) = nested2($1)' >> .hg/hgrc
  $ echo 'nested2($1) = nested3($1)' >> .hg/hgrc
  $ echo 'nested3($1) = max($1)' >> .hg/hgrc
  $ try 'nested(2:5)'
  (func
    (symbol 'nested')
    (range
      (symbol '2')
      (symbol '5')))
  * expanded:
  (func
    (symbol 'max')
    (range
      (symbol '2')
      (symbol '5')))
  * set:
  <baseset
    <max
      <fullreposet+ 0:10>,
      <spanset+ 2:6>>>
  5

test chained `or` operations are flattened at parsing phase

  $ echo 'chainedorops($1, $2, $3) = $1|$2|$3' >> .hg/hgrc
  $ try 'chainedorops(0:1, 1:2, 2:3)'
  (func
    (symbol 'chainedorops')
    (list
      (range
        (symbol '0')
        (symbol '1'))
      (range
        (symbol '1')
        (symbol '2'))
      (range
        (symbol '2')
        (symbol '3'))))
  * expanded:
  (or
    (list
      (range
        (symbol '0')
        (symbol '1'))
      (range
        (symbol '1')
        (symbol '2'))
      (range
        (symbol '2')
        (symbol '3'))))
  * set:
  <addset
    <spanset+ 0:2>,
    <addset
      <spanset+ 1:3>,
      <spanset+ 2:4>>>
  0
  1
  2
  3

test variable isolation, variable placeholders are rewritten as string
then parsed and matched again as string. Check they do not leak too
far away.

  $ echo 'injectparamasstring = max("$1")' >> .hg/hgrc
  $ echo 'callinjection($1) = descendants(injectparamasstring)' >> .hg/hgrc
  $ try 'callinjection(2:5)'
  (func
    (symbol 'callinjection')
    (range
      (symbol '2')
      (symbol '5')))
  * expanded:
  (func
    (symbol 'descendants')
    (func
      (symbol 'max')
      (string '$1')))
  abort: unknown revision '$1'!
  [255]

test scope of alias expansion: 'universe' is expanded prior to 'shadowall(0)',
but 'all()' should never be substituted to '0()'.

  $ echo 'universe = all()' >> .hg/hgrc
  $ echo 'shadowall(all) = all and universe' >> .hg/hgrc
  $ try 'shadowall(0)'
  (func
    (symbol 'shadowall')
    (symbol '0'))
  * expanded:
  (and
    (symbol '0')
    (func
      (symbol 'all')
      None))
  * set:
  <filteredset
    <baseset [0]>,
    <spanset+ 0:10>>
  0

test unknown reference:

  $ try "unknownref(0)" --config 'revsetalias.unknownref($1)=$1:$2'
  (func
    (symbol 'unknownref')
    (symbol '0'))
  abort: bad definition of revset alias "unknownref": invalid symbol '$2'
  [255]

  $ hg debugrevspec --debug --config revsetalias.anotherbadone='branch(' "tip"
  (symbol 'tip')
  warning: bad definition of revset alias "anotherbadone": at 7: not a prefix: end
  * set:
  <baseset [9]>
  9

  $ try 'tip'
  (symbol 'tip')
  * set:
  <baseset [9]>
  9

  $ hg debugrevspec --debug --config revsetalias.'bad name'='tip' "tip"
  (symbol 'tip')
  warning: bad declaration of revset alias "bad name": at 4: invalid token
  * set:
  <baseset [9]>
  9
  $ echo 'strictreplacing($1, $10) = $10 or desc("$1")' >> .hg/hgrc
  $ try 'strictreplacing("foo", tip)'
  (func
    (symbol 'strictreplacing')
    (list
      (string 'foo')
      (symbol 'tip')))
  * expanded:
  (or
    (list
      (symbol 'tip')
      (func
        (symbol 'desc')
        (string '$1'))))
  * set:
  <addset
    <baseset [9]>,
    <filteredset
      <fullreposet+ 0:10>,
      <desc '$1'>>>
  9

  $ try 'd(2:5)'
  (func
    (symbol 'd')
    (range
      (symbol '2')
      (symbol '5')))
  * expanded:
  (func
    (symbol 'reverse')
    (func
      (symbol 'sort')
      (list
        (range
          (symbol '2')
          (symbol '5'))
        (symbol 'date'))))
  * set:
  <baseset [4, 5, 3, 2]>
  4
  5
  3
  2
  $ try 'rs(2 or 3, date)'
  (func
    (symbol 'rs')
    (list
      (or
        (list
          (symbol '2')
          (symbol '3')))
      (symbol 'date')))
  * expanded:
  (func
    (symbol 'reverse')
    (func
      (symbol 'sort')
      (list
        (or
          (list
            (symbol '2')
            (symbol '3')))
        (symbol 'date'))))
  * set:
  <baseset [3, 2]>
  3
  2
  $ try 'rs()'
  (func
    (symbol 'rs')
    None)
  hg: parse error: invalid number of arguments: 0
  [255]
  $ try 'rs(2)'
  (func
    (symbol 'rs')
    (symbol '2'))
  hg: parse error: invalid number of arguments: 1
  [255]
  $ try 'rs(2, data, 7)'
  (func
    (symbol 'rs')
    (list
      (symbol '2')
      (symbol 'data')
      (symbol '7')))
  hg: parse error: invalid number of arguments: 3
  [255]
  $ try 'rs4(2 or 3, x, x, date)'
  (func
    (symbol 'rs4')
    (list
      (or
        (list
          (symbol '2')
          (symbol '3')))
      (symbol 'x')
      (symbol 'x')
      (symbol 'date')))
  * expanded:
  (func
    (symbol 'reverse')
    (func
      (symbol 'sort')
      (list
        (or
          (list
            (symbol '2')
            (symbol '3')))
        (symbol 'date'))))
  * set:
  <baseset [3, 2]>
  3
  2

issue4553: check that revset aliases override existing hash prefix

  $ hg log -qr e
  6:e0cc66ef77e8

  $ hg log -qr e --config revsetalias.e="all()"
  0:2785f51eece5
  1:d75937da8da0
  2:5ed5505e9f1c
  3:8528aa5637f2
  4:2326846efdab
  5:904fa392b941
  6:e0cc66ef77e8
  7:013af1973af4
  8:d5d0dcbdc4d9
  9:24286f4ae135

  $ hg log -qr e: --config revsetalias.e="0"
  0:2785f51eece5
  1:d75937da8da0
  2:5ed5505e9f1c
  3:8528aa5637f2
  4:2326846efdab
  5:904fa392b941
  6:e0cc66ef77e8
  7:013af1973af4
  8:d5d0dcbdc4d9
  9:24286f4ae135

  $ hg log -qr :e --config revsetalias.e="9"
  0:2785f51eece5
  1:d75937da8da0
  2:5ed5505e9f1c
  3:8528aa5637f2
  4:2326846efdab
  5:904fa392b941
  6:e0cc66ef77e8
  7:013af1973af4
  8:d5d0dcbdc4d9
  9:24286f4ae135

  $ hg log -qr e:
  6:e0cc66ef77e8
  7:013af1973af4
  8:d5d0dcbdc4d9
  9:24286f4ae135

  $ hg log -qr :e
  0:2785f51eece5
  1:d75937da8da0
  2:5ed5505e9f1c
  3:8528aa5637f2
  4:2326846efdab
  5:904fa392b941
  6:e0cc66ef77e8

issue2549 - correct optimizations

  $ try 'limit(1 or 2 or 3, 2) and not 2'
  (and
    (func
      (symbol 'limit')
      (list
        (or
          (list
            (symbol '1')
            (symbol '2')
            (symbol '3')))
        (symbol '2')))
    (not
      (symbol '2')))
  * set:
  <filteredset
    <baseset [1, 2]>,
    <not
      <baseset [2]>>>
  1
  $ try 'max(1 or 2) and not 2'
  (and
    (func
      (symbol 'max')
      (or
        (list
          (symbol '1')
          (symbol '2'))))
    (not
      (symbol '2')))
  * set:
  <filteredset
    <baseset
      <max
        <fullreposet+ 0:10>,
        <baseset [1, 2]>>>,
    <not
      <baseset [2]>>>
  $ try 'min(1 or 2) and not 1'
  (and
    (func
      (symbol 'min')
      (or
        (list
          (symbol '1')
          (symbol '2'))))
    (not
      (symbol '1')))
  * set:
  <filteredset
    <baseset
      <min
        <fullreposet+ 0:10>,
        <baseset [1, 2]>>>,
    <not
      <baseset [1]>>>
  $ try 'last(1 or 2, 1) and not 2'
  (and
    (func
      (symbol 'last')
      (list
        (or
          (list
            (symbol '1')
            (symbol '2')))
        (symbol '1')))
    (not
      (symbol '2')))
  * set:
  <filteredset
    <baseset [2]>,
    <not
      <baseset [2]>>>

issue4289 - ordering of built-ins
  $ hg log -M -q -r 3:2
  3:8528aa5637f2
  2:5ed5505e9f1c

test revsets started with 40-chars hash (issue3669)

  $ ISSUE3669_TIP=`hg tip --template '{node}'`
  $ hg log -r "${ISSUE3669_TIP}" --template '{rev}\n'
  9
  $ hg log -r "${ISSUE3669_TIP}^" --template '{rev}\n'
  8

test or-ed indirect predicates (issue3775)

  $ log '6 or 6^1' | sort
  5
  6
  $ log '6^1 or 6' | sort
  5
  6
  $ log '4 or 4~1' | sort
  2
  4
  $ log '4~1 or 4' | sort
  2
  4
  $ log '(0 or 2):(4 or 6) or 0 or 6' | sort
  0
  1
  2
  3
  4
  5
  6
  $ log '0 or 6 or (0 or 2):(4 or 6)' | sort
  0
  1
  2
  3
  4
  5
  6

tests for 'remote()' predicate:
#.  (csets in remote) (id)            (remote)
1.  less than local   current branch  "default"
2.  same with local   specified       "default"
3.  more than local   specified       specified

  $ hg clone --quiet -U . ../remote3
  $ cd ../remote3
  $ hg update -q 7
  $ echo r > r
  $ hg ci -Aqm 10
  $ log 'remote()'
  7
  $ log 'remote("a-b-c-")'
  2
  $ cd ../repo
  $ log 'remote(".a.b.c.", "../remote3")'

tests for concatenation of strings/symbols by "##"

  $ try "278 ## '5f5' ## 1ee ## 'ce5'"
  (_concat
    (_concat
      (_concat
        (symbol '278')
        (string '5f5'))
      (symbol '1ee'))
    (string 'ce5'))
  * concatenated:
  (string '2785f51eece5')
  * set:
  <baseset [0]>
  0

  $ echo 'cat4($1, $2, $3, $4) = $1 ## $2 ## $3 ## $4' >> .hg/hgrc
  $ try "cat4(278, '5f5', 1ee, 'ce5')"
  (func
    (symbol 'cat4')
    (list
      (symbol '278')
      (string '5f5')
      (symbol '1ee')
      (string 'ce5')))
  * expanded:
  (_concat
    (_concat
      (_concat
        (symbol '278')
        (string '5f5'))
      (symbol '1ee'))
    (string 'ce5'))
  * concatenated:
  (string '2785f51eece5')
  * set:
  <baseset [0]>
  0

(check concatenation in alias nesting)

  $ echo 'cat2($1, $2) = $1 ## $2' >> .hg/hgrc
  $ echo 'cat2x2($1, $2, $3, $4) = cat2($1 ## $2, $3 ## $4)' >> .hg/hgrc
  $ log "cat2x2(278, '5f5', 1ee, 'ce5')"
  0

(check operator priority)

  $ echo 'cat2n2($1, $2, $3, $4) = $1 ## $2 or $3 ## $4~2' >> .hg/hgrc
  $ log "cat2n2(2785f5, 1eece5, 24286f, 4ae135)"
  0
  4

  $ cd ..

prepare repository that has "default" branches of multiple roots

  $ hg init namedbranch
  $ cd namedbranch

  $ echo default0 >> a
  $ hg ci -Aqm0
  $ echo default1 >> a
  $ hg ci -m1

  $ hg branch -q stable
  $ echo stable2 >> a
  $ hg ci -m2
  $ echo stable3 >> a
  $ hg ci -m3

  $ hg update -q null
  $ echo default4 >> a
  $ hg ci -Aqm4
  $ echo default5 >> a
  $ hg ci -m5

"null" revision belongs to "default" branch (issue4683)

  $ log 'branch(null)'
  0
  1
  4
  5

"null" revision belongs to "default" branch, but it shouldn't appear in set
unless explicitly specified (issue4682)

  $ log 'children(branch(default))'
  1
  2
  5

  $ cd ..

test author/desc/keyword in problematic encoding
# unicode: cp932:
# u30A2    0x83 0x41(= 'A')
# u30C2    0x83 0x61(= 'a')

  $ hg init problematicencoding
  $ cd problematicencoding

  $ "$PYTHON" <<EOF
  > open('setup.sh', 'wb').write(u'''
  > echo a > text
  > hg add text
  > hg --encoding utf-8 commit -u '\u30A2' -m none
  > echo b > text
  > hg --encoding utf-8 commit -u '\u30C2' -m none
  > echo c > text
  > hg --encoding utf-8 commit -u none -m '\u30A2'
  > echo d > text
  > hg --encoding utf-8 commit -u none -m '\u30C2'
  > '''.encode('utf-8'))
  > EOF
  $ sh < setup.sh

test in problematic encoding
  $ "$PYTHON" <<EOF
  > open('test.sh', 'wb').write(u'''
  > hg --encoding cp932 log --template '{rev}\\n' -r 'author(\u30A2)'
  > echo ====
  > hg --encoding cp932 log --template '{rev}\\n' -r 'author(\u30C2)'
  > echo ====
  > hg --encoding cp932 log --template '{rev}\\n' -r 'desc(\u30A2)'
  > echo ====
  > hg --encoding cp932 log --template '{rev}\\n' -r 'desc(\u30C2)'
  > echo ====
  > hg --encoding cp932 log --template '{rev}\\n' -r 'keyword(\u30A2)'
  > echo ====
  > hg --encoding cp932 log --template '{rev}\\n' -r 'keyword(\u30C2)'
  > '''.encode('cp932'))
  > EOF
  $ sh < test.sh
  0
  ====
  1
  ====
  2
  ====
  3
  ====
  0
  2
  ====
  1
  3

test error message of bad revset
  $ hg log -r 'foo\\'
  hg: parse error at 3: syntax error in revset 'foo\\'
  (foo\\
      ^ here)
  [255]

  $ cd ..

Test that revset predicate of extension isn't loaded at failure of
loading it

  $ cd repo

  $ cat <<EOF > $TESTTMP/custompredicate.py
  > from mercurial import error, registrar, revset
  > 
  > revsetpredicate = registrar.revsetpredicate()
  > 
  > @revsetpredicate(b'custom1()')
  > def custom1(repo, subset, x):
  >     return revset.baseset([1])
  > 
  > raise error.Abort(b'intentional failure of loading extension')
  > EOF
  $ cat <<EOF > .hg/hgrc
  > [extensions]
  > custompredicate = $TESTTMP/custompredicate.py
  > EOF

  $ hg debugrevspec "custom1()"
  *** failed to import extension custompredicate from $TESTTMP/custompredicate.py: intentional failure of loading extension
  hg: parse error: unknown identifier: custom1
  [255]

Test repo.anyrevs with customized revset overrides

  $ cat > $TESTTMP/printprevset.py <<EOF
  > from mercurial import encoding, registrar
  > cmdtable = {}
  > command = registrar.command(cmdtable)
  > @command(b'printprevset')
  > def printprevset(ui, repo):
  >     alias = {}
  >     p = encoding.environ.get(b'P')
  >     if p:
  >         alias[b'P'] = p
  >     revs = repo.anyrevs([b'P'], user=True, localalias=alias)
  >     ui.write(b'P=%r\n' % list(revs))
  > EOF

  $ cat >> .hg/hgrc <<EOF
  > custompredicate = !
  > printprevset = $TESTTMP/printprevset.py
  > EOF

  $ hg --config revsetalias.P=1 printprevset
  P=[1]
  $ P=3 hg --config revsetalias.P=2 printprevset
  P=[3]

  $ cd ..

Test obsstore related revsets

  $ hg init repo1
  $ cd repo1
  $ cat <<EOF >> .hg/hgrc
  > [experimental]
  > evolution.createmarkers=True
  > EOF

  $ hg debugdrawdag <<'EOS'
  >        F G
  >        |/    # split: B -> E, F
  > B C D  E     # amend: B -> C -> D
  >  \|/   |     # amend: F -> G
  >   A    A  Z  # amend: A -> Z
  > EOS
  3 new orphan changesets
  3 new content-divergent changesets

  $ hg log -r 'successors(Z)' -T '{desc}\n'
  Z

  $ hg log -r 'successors(F)' -T '{desc}\n'
  F
  G

  $ hg tag --remove --local C D E F G

  $ hg log -r 'successors(B)' -T '{desc}\n'
  B
  D
  E
  G

  $ hg log -r 'successors(B)' -T '{desc}\n' --hidden
  B
  C
  D
  E
  F
  G

  $ hg log -r 'successors(B)-obsolete()' -T '{desc}\n' --hidden
  D
  E
  G

  $ hg log -r 'successors(B+A)-contentdivergent()' -T '{desc}\n'
  A
  Z
  B

  $ hg log -r 'successors(B+A)-contentdivergent()-obsolete()' -T '{desc}\n'
  Z

Test `draft() & ::x` optimization

  $ hg init $TESTTMP/repo2
  $ cd $TESTTMP/repo2
  $ hg debugdrawdag <<'EOS'
  >   P5 S1
  >    |  |
  > S2 | D3
  >   \|/
  >   P4
  >    |
  >   P3 D2
  >    |  |
  >   P2 D1
  >    |/
  >   P1
  >    |
  >   P0
  > EOS
  $ hg phase --public -r P5
  $ hg phase --force --secret -r S1+S2
  $ hg log -G -T '{rev} {desc} {phase}' -r 'sort(all(), topo, topo.firstbranch=P5)'
  o  8 P5 public
  |
  | o  10 S1 secret
  | |
  | o  7 D3 draft
  |/
  | o  9 S2 secret
  |/
  o  6 P4 public
  |
  o  5 P3 public
  |
  o  3 P2 public
  |
  | o  4 D2 draft
  | |
  | o  2 D1 draft
  |/
  o  1 P1 public
  |
  o  0 P0 public
  
  $ hg debugrevspec --verify -p analyzed -p optimized 'draft() & ::(((S1+D1+P5)-D3)+S2)'
  * analyzed:
  (and
    (func
      (symbol 'draft')
      None)
    (func
      (symbol 'ancestors')
      (or
        (list
          (and
            (or
              (list
                (symbol 'S1')
                (symbol 'D1')
                (symbol 'P5')))
            (not
              (symbol 'D3')))
          (symbol 'S2')))))
  * optimized:
  (func
    (symbol '_phaseandancestors')
    (list
      (symbol 'draft')
      (or
        (list
          (difference
            (func
              (symbol '_list')
              (string 'S1\x00D1\x00P5'))
            (symbol 'D3'))
          (symbol 'S2')))))
  $ hg debugrevspec --verify -p analyzed -p optimized 'secret() & ::9'
  * analyzed:
  (and
    (func
      (symbol 'secret')
      None)
    (func
      (symbol 'ancestors')
      (symbol '9')))
  * optimized:
  (func
    (symbol '_phaseandancestors')
    (list
      (symbol 'secret')
      (symbol '9')))
  $ hg debugrevspec --verify -p analyzed -p optimized '7 & ( (not public()) & ::(tag()) )'
  * analyzed:
  (and
    (symbol '7')
    (and
      (not
        (func
          (symbol 'public')
          None))
      (func
        (symbol 'ancestors')
        (func
          (symbol 'tag')
          None))))
  * optimized:
  (and
    (symbol '7')
    (func
      (symbol '_phaseandancestors')
      (list
        (symbol '_notpublic')
        (func
          (symbol 'tag')
          None))))
  $ hg debugrevspec --verify -p optimized '(not public()) & ancestors(S1+D2+P5, 1)'
  * optimized:
  (and
    (func
      (symbol '_notpublic')
      None)
    (func
      (symbol 'ancestors')
      (list
        (func
          (symbol '_list')
          (string 'S1\x00D2\x00P5'))
        (symbol '1'))))
  $ hg debugrevspec --verify -p optimized '(not public()) & ancestors(S1+D2+P5, depth=1)'
  * optimized:
  (and
    (func
      (symbol '_notpublic')
      None)
    (func
      (symbol 'ancestors')
      (list
        (func
          (symbol '_list')
          (string 'S1\x00D2\x00P5'))
        (keyvalue
          (symbol 'depth')
          (symbol '1')))))

test commonancestors and its optimization

  $ hg debugrevspec --verify -p analyzed -p optimized 'heads(commonancestors(head()))'
  * analyzed:
  (func
    (symbol 'heads')
    (func
      (symbol 'commonancestors')
      (func
        (symbol 'head')
        None)))
  * optimized:
  (func
    (symbol '_commonancestorheads')
    (func
      (symbol 'head')
      None))