annotate tests/test-revset.t @ 34015:2d80e078724a

tag: use filtered repo when creating new tags (issue5539)

When pruning a changeset that added a tag and then adding another tag, the
"pruned" tag gets restored. This is because the tag creation step (tags._tag()
call in tags.tag()) is currently done on the unfiltered repo. This behavior
has been there from 7977d35df13b which backs out b08af8f0ac01 with no clear
reason but caution on unthought situations at that time. In this changeset, we
pass the filtered repo to tags._tag(), preventing "pruned" tags to reappear.
This somehow restores b08af8f0ac01, though now we arguably have a valid use
case for.

  $ HGENCODING=utf-8
  $ export HGENCODING
  $ cat > testrevset.py << EOF
  > import mercurial.revset
  > 
  > baseset = mercurial.revset.baseset
  > 
  > def r3232(repo, subset, x):
  >     """"simple revset that return [3,2,3,2]
  > 
  >     revisions duplicated on purpose.
  >     """
  >     if 3 not in subset:
  >        if 2 in subset:
  >            return baseset([2,2])
  >        return baseset()
  >     return baseset([3,3,2,2])
  > 
  > mercurial.revset.symbols['r3232'] = r3232
  > EOF
  $ cat >> $HGRCPATH << EOF
  > [extensions]
  > drawdag=$TESTDIR/drawdag.py
  > testrevset=$TESTTMP/testrevset.py
  > EOF

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

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

extension to build '_intlist()' and '_hexlist()', which is necessary because
these predicates use '\0' as a separator:

  $ cat <<EOF > debugrevlistspec.py
  > from __future__ import absolute_import
  > from mercurial import (
  >     node as nodemod,
  >     registrar,
  >     revset,
  >     revsetlang,
  >     smartset,
  > )
  > cmdtable = {}
  > command = registrar.command(cmdtable)
  > @command(b'debugrevlistspec',
  >     [('', 'optimize', None, 'print parsed tree after optimizing'),
  >      ('', 'bin', None, 'unhexlify arguments')])
  > def debugrevlistspec(ui, repo, fmt, *args, **opts):
  >     if opts['bin']:
  >         args = map(nodemod.bin, args)
  >     expr = revsetlang.formatspec(fmt, list(args))
  >     if ui.verbose:
  >         tree = revsetlang.parse(expr, lookup=repo.__contains__)
  >         ui.note(revsetlang.prettyformat(tree), "\n")
  >         if opts["optimize"]:
  >             opttree = revsetlang.optimize(revsetlang.analyze(tree))
  >             ui.note("* optimized:\n", revsetlang.prettyformat(opttree),
  >                     "\n")
  >     func = revset.match(ui, expr, repo)
  >     revs = func(repo)
  >     if ui.verbose:
  >         ui.note("* set:\n", smartset.prettyformat(revs), "\n")
  >     for c in revs:
  >         ui.write("%s\n" % c)
  > EOF
  $ cat <<EOF >> $HGRCPATH
  > [extensions]
  > debugrevlistspec = $TESTTMP/debugrevlistspec.py
  > EOF
  $ trylist() {
  >   hg debugrevlistspec --debug "$@"
  > }

  $ 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

trivial

  $ try 0:1
  (range
    ('symbol', '0')
    ('symbol', '1'))
  * set:
  <spanset+ 0:2>
  0
  1
  $ try --optimize :
  (rangeall
    None)
  * optimized:
  (rangeall
    None)
  * set:
  <spanset+ 0:10>
  0
  1
  2
  3
  4
  5
  6
  7
  8
  9
  $ try 3::6
  (dagrange
    ('symbol', '3')
    ('symbol', '6'))
  * set:
  <baseset+ [3, 5, 6]>
  3
  5
  6
  $ try '0|1|2'
  (or
    (list
      ('symbol', '0')
      ('symbol', '1')
      ('symbol', '2')))
  * set:
  <baseset [0, 1, 2]>
  0
  1
  2

names that should work without quoting

  $ try a
  ('symbol', 'a')
  * set:
  <baseset [0]>
  0
  $ try b-a
  (minus
    ('symbol', 'b')
    ('symbol', 'a'))
  * set:
  <filteredset
    <baseset [1]>,
    <not
      <baseset [0]>>>
  1
  $ try _a_b_c_
  ('symbol', '_a_b_c_')
  * set:
  <baseset [6]>
  6
  $ try _a_b_c_-a
  (minus
    ('symbol', '_a_b_c_')
    ('symbol', 'a'))
  * set:
  <filteredset
    <baseset [6]>,
    <not
      <baseset [0]>>>
  6
  $ try .a.b.c.
  ('symbol', '.a.b.c.')
  * set:
  <baseset [7]>
  7
  $ try .a.b.c.-a
  (minus
    ('symbol', '.a.b.c.')
    ('symbol', 'a'))
  * set:
  <filteredset
    <baseset [7]>,
    <not
      <baseset [0]>>>
  7

names that should be caught by fallback mechanism

  $ try -- '-a-b-c-'
  ('symbol', '-a-b-c-')
  * set:
  <baseset [4]>
  4
  $ log -a-b-c-
  4
  $ try '+a+b+c+'
  ('symbol', '+a+b+c+')
  * set:
  <baseset [3]>
  3
  $ try '+a+b+c+:'
  (rangepost
    ('symbol', '+a+b+c+'))
  * set:
  <spanset+ 3:10>
  3
  4
  5
  6
  7
  8
  9
  $ try ':+a+b+c+'
  (rangepre
    ('symbol', '+a+b+c+'))
  * set:
  <spanset+ 0:4>
  0
  1
  2
  3
  $ try -- '-a-b-c-:+a+b+c+'
  (range
    ('symbol', '-a-b-c-')
    ('symbol', '+a+b+c+'))
  * set:
  <spanset- 3:5>
  4
  3
  $ log '-a-b-c-:+a+b+c+'
  4
  3

  $ try -- -a-b-c--a # complains
  (minus
    (minus
      (minus
        (negate
          ('symbol', 'a'))
        ('symbol', 'b'))
      ('symbol', 'c'))
    (negate
      ('symbol', 'a')))
  abort: unknown revision '-a'!
  [255]
  $ try é
  ('symbol', '\xc3\xa9')
  * set:
  <baseset [9]>
  9

no quoting needed

  $ log ::a-b-c-
  0
  1
  2

quoting needed

  $ try '"-a-b-c-"-a'
  (minus
    ('string', '-a-b-c-')
    ('symbol', 'a'))
  * set:
  <filteredset
    <baseset [4]>,
    <not
      <baseset [0]>>>
  4

  $ log '1 or 2'
  1
  2
  $ log '1|2'
  1
  2
  $ log '1 and 2'
  $ log '1&2'
  $ try '1&2|3' # precedence - and is higher
  (or
    (list
      (and
        ('symbol', '1')
        ('symbol', '2'))
      ('symbol', '3')))
  * set:
  <addset
    <baseset []>,
    <baseset [3]>>
  3
  $ try '1|2&3'
  (or
    (list
      ('symbol', '1')
      (and
        ('symbol', '2')
        ('symbol', '3'))))
  * set:
  <addset
    <baseset [1]>,
    <baseset []>>
  1
  $ try '1&2&3' # associativity
  (and
    (and
      ('symbol', '1')
      ('symbol', '2'))
    ('symbol', '3'))
  * set:
  <baseset []>
  $ try '1|(2|3)'
  (or
    (list
      ('symbol', '1')
      (group
        (or
          (list
            ('symbol', '2')
            ('symbol', '3'))))))
  * set:
  <addset
    <baseset [1]>,
    <baseset [2, 3]>>
  1
  2
  3
  $ log '1.0' # tag
  6
  $ log 'a' # branch
  0
  $ log '2785f51ee'
  0
  $ log 'date(2005)'
  4
  $ log 'date(this is a test)'
  hg: parse error at 10: unexpected token: symbol
  [255]
  $ log 'date()'
  hg: parse error: date requires a string
  [255]
  $ log 'date'
  abort: unknown revision 'date'!
  [255]
  $ log 'date('
  hg: parse error at 5: not a prefix: end
  [255]
  $ log 'date("\xy")'
  hg: parse error: invalid \x escape
  [255]
  $ log 'date(tip)'
  hg: parse error: invalid date: 'tip'
  [255]
  $ log '0:date'
  abort: unknown revision 'date'!
  [255]
  $ log '::"date"'
  abort: unknown revision 'date'!
  [255]
  $ hg book date -r 4
  $ log '0:date'
  0
  1
  2
  3
  4
  $ log '::date'
  0
  1
  2
  4
  $ log '::"date"'
  0
  1
  2
  4
  $ log 'date(2005) and 1::'
  4
  $ hg book -d date

function name should be a symbol

  $ log '"date"(2005)'
  hg: parse error: not a symbol
  [255]

keyword arguments

  $ log 'extra(branch, value=a)'
  0

  $ log 'extra(branch, a, b)'
  hg: parse error: extra takes at most 2 positional arguments
  [255]
  $ log 'extra(a, label=b)'
  hg: parse error: extra got multiple values for keyword argument 'label'
  [255]
  $ log 'extra(label=branch, default)'
  hg: parse error: extra got an invalid argument
  [255]
  $ log 'extra(branch, foo+bar=baz)'
  hg: parse error: extra got an invalid argument
  [255]
  $ log 'extra(unknown=branch)'
  hg: parse error: extra got an unexpected keyword argument 'unknown'
  [255]

  $ try 'foo=bar|baz'
  (keyvalue
    ('symbol', 'foo')
    (or
      (list
        ('symbol', 'bar')
        ('symbol', 'baz'))))
  hg: parse error: can't use a key-value pair in this context
  [255]

 right-hand side should be optimized recursively

  $ try --optimize 'foo=(not public())'
  (keyvalue
    ('symbol', 'foo')
    (group
      (not
        (func
          ('symbol', 'public')
          None))))
  * optimized:
  (keyvalue
    ('symbol', 'foo')
    (func
      ('symbol', '_notpublic')
      None))
  hg: parse error: can't use a key-value pair in this context
  [255]

relation-subscript operator has the highest binding strength (as function call):

  $ hg debugrevspec -p parsed 'tip:tip^#generations[-1]'
  * parsed:
  (range
    ('symbol', 'tip')
    (relsubscript
      (parentpost
        ('symbol', 'tip'))
      ('symbol', 'generations')
      (negate
        ('symbol', '1'))))
  9
  8
  7
  6
  5
  4

  $ hg debugrevspec -p parsed --no-show-revs 'not public()#generations[0]'
  * parsed:
  (not
    (relsubscript
      (func
        ('symbol', 'public')
        None)
      ('symbol', 'generations')
      ('symbol', '0')))

left-hand side of relation-subscript operator should be optimized recursively:

  $ hg debugrevspec -p analyzed -p optimized --no-show-revs \
  > '(not public())#generations[0]'
  * analyzed:
  (relsubscript
    (not
      (func
        ('symbol', 'public')
        None))
    ('symbol', 'generations')
    ('symbol', '0'))
  * optimized:
  (relsubscript
    (func
      ('symbol', '_notpublic')
      None)
    ('symbol', 'generations')
    ('symbol', '0'))

resolution of subscript and relation-subscript ternary operators:

  $ hg debugrevspec -p analyzed 'tip[0]'
  * analyzed:
  (subscript
    ('symbol', 'tip')
    ('symbol', '0'))
  hg: parse error: can't use a subscript in this context
  [255]

  $ hg debugrevspec -p analyzed 'tip#rel[0]'
  * analyzed:
  (relsubscript
    ('symbol', 'tip')
    ('symbol', 'rel')
    ('symbol', '0'))
  hg: parse error: unknown identifier: rel
  [255]

  $ hg debugrevspec -p analyzed '(tip#rel)[0]'
  * analyzed:
  (subscript
    (relation
      ('symbol', 'tip')
      ('symbol', 'rel'))
    ('symbol', '0'))
  hg: parse error: can't use a subscript in this context
  [255]

  $ hg debugrevspec -p analyzed 'tip#rel[0][1]'
  * analyzed:
  (subscript
    (relsubscript
      ('symbol', 'tip')
      ('symbol', 'rel')
      ('symbol', '0'))
    ('symbol', '1'))
  hg: parse error: can't use a subscript in this context
  [255]

  $ hg debugrevspec -p analyzed 'tip#rel0#rel1[1]'
  * analyzed:
  (relsubscript
    (relation
      ('symbol', 'tip')
      ('symbol', 'rel0'))
    ('symbol', 'rel1')
    ('symbol', '1'))
  hg: parse error: unknown identifier: rel1
  [255]

  $ hg debugrevspec -p analyzed 'tip#rel0[0]#rel1[1]'
  * analyzed:
  (relsubscript
    (relsubscript
      ('symbol', 'tip')
      ('symbol', 'rel0')
      ('symbol', '0'))
    ('symbol', 'rel1')
    ('symbol', '1'))
  hg: parse error: unknown identifier: rel1
  [255]

parse errors of relation, subscript and relation-subscript operators:

  $ hg debugrevspec '[0]'
  hg: parse error at 0: not a prefix: [
  [255]
  $ hg debugrevspec '.#'
  hg: parse error at 2: not a prefix: end
  [255]
  $ hg debugrevspec '#rel'
  hg: parse error at 0: not a prefix: #
  [255]
  $ hg debugrevspec '.#rel[0'
  hg: parse error at 7: unexpected token: end
  [255]
  $ hg debugrevspec '.]'
  hg: parse error at 1: invalid token
  [255]

  $ hg debugrevspec '.#generations[a]'
  hg: parse error: relation subscript must be an integer
  [255]
  $ hg debugrevspec '.#generations[1-2]'
  hg: parse error: relation subscript must be an integer
  [255]

parsed tree at stages:

  $ hg debugrevspec -p all '()'
  * parsed:
  (group
    None)
  * expanded:
  (group
    None)
  * concatenated:
  (group
    None)
  * analyzed:
  None
  * optimized:
  None
  hg: parse error: missing argument
  [255]

  $ hg debugrevspec --no-optimized -p all '()'
  * parsed:
  (group
    None)
  * expanded:
  (group
    None)
  * concatenated:
  (group
    None)
  * analyzed:
  None
  hg: parse error: missing argument
  [255]

  $ hg debugrevspec -p parsed -p analyzed -p optimized '(0|1)-1'
  * parsed:
  (minus
    (group
      (or
        (list
          ('symbol', '0')
          ('symbol', '1'))))
    ('symbol', '1'))
  * analyzed:
  (and
    (or
      (list
        ('symbol', '0')
        ('symbol', '1')))
    (not
      ('symbol', '1')))
  * optimized:
  (difference
    (func
      ('symbol', '_list')
      ('string', '0\x001'))
    ('symbol', '1'))
  0

  $ hg debugrevspec -p unknown '0'
  abort: invalid stage name: unknown
  [255]

  $ hg debugrevspec -p all --optimize '0'
  abort: cannot use --optimize with --show-stage
  [255]

verify optimized tree:

  $ hg debugrevspec --verify '0|1'

  $ hg debugrevspec --verify -v -p analyzed -p optimized 'r3232() & 2'
  * analyzed:
  (and
    (func
      ('symbol', 'r3232')
      None)
    ('symbol', '2'))
  * optimized:
  (flipand
    ('symbol', '2')
    (func
      ('symbol', 'r3232')
      None))
  * analyzed set:
  <baseset [2]>
  * optimized set:
  <baseset [2, 2]>
  --- analyzed
  +++ optimized
   2
  +2
  [1]

  $ hg debugrevspec --no-optimized --verify-optimized '0'
  abort: cannot use --verify-optimized with --no-optimized
  [255]

Test that symbols only get parsed as functions if there's an opening
parenthesis.

  $ hg book only -r 9
  $ log 'only(only)'   # Outer "only" is a function, inner "only" is the bookmark
  8
  9

':y' behaves like '0:y', but can't be rewritten as such since the revision '0'
may be hidden (issue5385)

  $ try -p parsed -p analyzed ':'
  * parsed:
  (rangeall
    None)
  * analyzed:
  (rangeall
    None)
  * set:
  <spanset+ 0:10>
  0
  1
  2
  3
  4
  5
  6
  7
  8
  9
  $ try -p analyzed ':1'
  * analyzed:
  (rangepre
    ('symbol', '1'))
  * set:
  <spanset+ 0:2>
  0
  1
  $ try -p analyzed ':(1|2)'
  * analyzed:
  (rangepre
    (or
      (list
        ('symbol', '1')
        ('symbol', '2'))))
  * set:
  <spanset+ 0:3>
  0
  1
  2
  $ try -p analyzed ':(1&2)'
  * analyzed:
  (rangepre
    (and
      ('symbol', '1')
      ('symbol', '2')))
  * set:
  <baseset []>

infix/suffix resolution of ^ operator (issue2884):

 x^:y means (x^):y

  $ try '1^:2'
  (range
    (parentpost
      ('symbol', '1'))
    ('symbol', '2'))
  * set:
  <spanset+ 0:3>
  0
  1
  2

  $ try '1^::2'
  (dagrange
    (parentpost
      ('symbol', '1'))
    ('symbol', '2'))
  * set:
  <baseset+ [0, 1, 2]>
  0
  1
  2

  $ try '9^:'
  (rangepost
    (parentpost
      ('symbol', '9')))
  * set:
  <spanset+ 8:10>
  8
  9

 x^:y should be resolved before omitting group operators

  $ try '1^(:2)'
  (parent
    ('symbol', '1')
    (group
      (rangepre
        ('symbol', '2'))))
  hg: parse error: ^ expects a number 0, 1, or 2
  [255]

 x^:y should be resolved recursively

  $ try 'sort(1^:2)'
  (func
    ('symbol', 'sort')
    (range
      (parentpost
        ('symbol', '1'))
      ('symbol', '2')))
  * set:
  <spanset+ 0:3>
  0
  1
  2

  $ try '(3^:4)^:2'
  (range
    (parentpost
      (group
        (range
          (parentpost
            ('symbol', '3'))
          ('symbol', '4'))))
    ('symbol', '2'))
  * set:
  <spanset+ 0:3>
  0
  1
  2

  $ try '(3^::4)^::2'
  (dagrange
    (parentpost
      (group
        (dagrange
          (parentpost
            ('symbol', '3'))
          ('symbol', '4'))))
    ('symbol', '2'))
  * set:
  <baseset+ [0, 1, 2]>
  0
  1
  2

  $ try '(9^:)^:'
  (rangepost
    (parentpost
      (group
        (rangepost
          (parentpost
            ('symbol', '9'))))))
  * set:
  <spanset+ 4:10>
  4
  5
  6
  7
  8
  9

 x^ in alias should also be resolved

  $ try 'A' --config 'revsetalias.A=1^:2'
  ('symbol', 'A')
  * expanded:
  (range
    (parentpost
      ('symbol', '1'))
    ('symbol', '2'))
  * set:
  <spanset+ 0:3>
  0
  1
  2

  $ try 'A:2' --config 'revsetalias.A=1^'
  (range
    ('symbol', 'A')
    ('symbol', '2'))
  * expanded:
  (range
    (parentpost
      ('symbol', '1'))
    ('symbol', '2'))
  * set:
  <spanset+ 0:3>
  0
  1
  2

 but not beyond the boundary of alias expansion, because the resolution should
 be made at the parsing stage

  $ try '1^A' --config 'revsetalias.A=:2'
  (parent
    ('symbol', '1')
    ('symbol', 'A'))
  * expanded:
  (parent
    ('symbol', '1')
    (rangepre
      ('symbol', '2')))
  hg: parse error: ^ expects a number 0, 1, or 2
  [255]

ancestor can accept 0 or more arguments

  $ log 'ancestor()'
  $ log 'ancestor(1)'
  1
  $ log 'ancestor(4,5)'
  1
  $ log 'ancestor(4,5) and 4'
  $ log 'ancestor(0,0,1,3)'
  0
  $ log 'ancestor(3,1,5,3,5,1)'
  1
  $ log 'ancestor(0,1,3,5)'
  0
  $ log 'ancestor(1,2,3,4,5)'
  1

test ancestors

  $ hg log -G -T '{rev}\n' --config experimental.graphshorten=True
  @  9
  o  8
  | o  7
  | o  6
  |/|
  | o  5
  o |  4
  | o  3
  o |  2
  |/
  o  1
  o  0

  $ log 'ancestors(5)'
  0
  1
  3
  5
  $ log 'ancestor(ancestors(5))'
  0
  $ log '::r3232()'
  0
  1
  2
  3

test ancestors with depth limit

 (depth=0 selects the node itself)

  $ log 'reverse(ancestors(9, depth=0))'
  9

 (interleaved: '4' would be missing if heap queue were higher depth first)

  $ log 'reverse(ancestors(8:9, depth=1))'
  9
  8
  4

 (interleaved: '2' would be missing if heap queue were higher depth first)

  $ log 'reverse(ancestors(7+8, depth=2))'
  8
  7
  6
  5
  4
  2

 (walk example above by separate queries)

  $ log 'reverse(ancestors(8, depth=2)) + reverse(ancestors(7, depth=2))'
  8
  4
  2
  7
  6
  5

 (walk 2nd and 3rd ancestors)

  $ log 'reverse(ancestors(7, depth=3, startdepth=2))'
  5
  4
  3
  2

 (interleaved: '4' would be missing if higher-depth ancestors weren't scanned)

  $ log 'reverse(ancestors(7+8, depth=2, startdepth=2))'
  5
  4
  2

 (note that 'ancestors(x, depth=y, startdepth=z)' does not identical to
 'ancestors(x, depth=y) - ancestors(x, depth=z-1)' because a node may have
 multiple depths)

  $ log 'reverse(ancestors(7+8, depth=2) - ancestors(7+8, depth=1))'
  5
  2

test bad arguments passed to ancestors()

  $ log 'ancestors(., depth=-1)'
  hg: parse error: negative depth
  [255]
  $ log 'ancestors(., depth=foo)'
  hg: parse error: ancestors expects an integer depth
  [255]

test descendants

  $ hg log -G -T '{rev}\n' --config experimental.graphshorten=True
  @  9
  o  8
  | o  7
  | o  6
  |/|
  | o  5
  o |  4
  | o  3
  o |  2
  |/
  o  1
  o  0

 (null is ultimate root and has optimized path)

  $ log 'null:4 & descendants(null)'
  -1
  0
  1
  2
  3
  4

 (including merge)

  $ log ':8 & descendants(2)'
  2
  4
  6
  7
  8

 (multiple roots)

  $ log ':8 & descendants(2+5)'
  2
  4
  5
  6
  7
  8

test descendants with depth limit

 (depth=0 selects the node itself)

  $ log 'descendants(0, depth=0)'
  0
  $ log 'null: & descendants(null, depth=0)'
  -1

 (p2 = null should be ignored)

  $ log 'null: & descendants(null, depth=2)'
  -1
  0
  1

 (multiple paths: depth(6) = (2, 3))

  $ log 'descendants(1+3, depth=2)'
  1
  2
  3
  4
  5
  6

 (multiple paths: depth(5) = (1, 2), depth(6) = (2, 3))

  $ log 'descendants(3+1, depth=2, startdepth=2)'
  4
  5
  6

 (multiple depths: depth(6) = (0, 2, 4), search for depth=2)

  $ log 'descendants(0+3+6, depth=3, startdepth=1)'
  1
  2
  3
  4
  5
  6
  7

 (multiple depths: depth(6) = (0, 4), no match)

  $ log 'descendants(0+6, depth=3, startdepth=1)'
  1
  2
  3
  4
  5
  7

test ancestors/descendants relation subscript:

  $ log 'tip#generations[0]'
  9
  $ log '.#generations[-1]'
  8
  $ log '.#g[(-1)]'
  8

  $ hg debugrevspec -p parsed 'roots(:)#g[2]'
  * parsed:
  (relsubscript
    (func
      ('symbol', 'roots')
      (rangeall
        None))
    ('symbol', 'g')
    ('symbol', '2'))
  2
  3

test author

  $ log 'author(bob)'
  2
  $ log 'author("re:bob|test")'
  0
  1
  2
  3
  4
  5
  6
  7
  8
  9
  $ log 'author(r"re:\S")'
  0
  1
  2
  3
  4
  5
  6
  7
  8
  9
  $ log 'branch(é)'
  8
  9
  $ log 'branch(a)'
  0
  $ hg log -r 'branch("re:a")' --template '{rev} {branch}\n'
  0 a
  2 a-b-c-
  3 +a+b+c+
  4 -a-b-c-
  5 !a/b/c/
  6 _a_b_c_
  7 .a.b.c.
  $ log 'children(ancestor(4,5))'
  2
  3

  $ log 'children(4)'
  6
  8
  $ log 'children(null)'
  0

  $ log 'closed()'
  $ log 'contains(a)'
  0
  1
  3
  5
  $ log 'contains("../repo/a")'
  0
  1
  3
  5
  $ log 'desc(B)'
  5
  $ hg log -r 'desc(r"re:S?u")' --template "{rev} {desc|firstline}\n"
  5 5 bug
  6 6 issue619
  $ log 'descendants(2 or 3)'
  2
  3
  4
  5
  6
  7
  8
  9
  $ log 'file("b*")'
  1
  4
  $ log 'filelog("b")'
  1
  4
  $ log 'filelog("../repo/b")'
  1
  4
  $ log 'follow()'
  0
  1
  2
  4
  8
  9
  $ log 'grep("issue\d+")'
  6
  $ try 'grep("(")' # invalid regular expression
  (func
    ('symbol', 'grep')
    ('string', '('))
  hg: parse error: invalid match pattern: unbalanced parenthesis
  [255]
  $ try 'grep("\bissue\d+")'
  (func
    ('symbol', 'grep')
    ('string', '\x08issue\\d+'))
  * set:
  <filteredset
    <fullreposet+ 0:10>,
    <grep '\x08issue\\d+'>>
  $ try 'grep(r"\bissue\d+")'
  (func
    ('symbol', 'grep')
    ('string', '\\bissue\\d+'))
  * set:
  <filteredset
    <fullreposet+ 0:10>,
    <grep '\\bissue\\d+'>>
  6
  $ try 'grep(r"\")'
  hg: parse error at 7: unterminated string
  [255]
  $ log 'head()'
  0
  1
  2
  3
  4
  5
  6
  7
  9
  $ log 'heads(6::)'
  7
  $ log 'keyword(issue)'
  6
  $ log 'keyword("test a")'

Test first (=limit) and last

  $ log 'limit(head(), 1)'
  0
  $ log 'limit(author("re:bob|test"), 3, 5)'
  5
  6
  7
  $ log 'limit(author("re:bob|test"), offset=6)'
  6
  $ log 'limit(author("re:bob|test"), offset=10)'
  $ log 'limit(all(), 1, -1)'
  hg: parse error: negative offset
  [255]
  $ log 'limit(all(), -1)'
  hg: parse error: negative number to select
  [255]
  $ log 'limit(all(), 0)'

  $ log 'last(all(), -1)'
  hg: parse error: negative number to select
  [255]
  $ log 'last(all(), 0)'
  $ log 'last(all(), 1)'
  9
  $ log 'last(all(), 2)'
  8
  9

Test smartset.slice() by first/last()

 (using unoptimized set, filteredset as example)

  $ hg debugrevspec --no-show-revs -s '0:7 & branch("re:")'
  * set:
  <filteredset
    <spanset+ 0:8>,
    <branch 're:'>>
  $ log 'limit(0:7 & branch("re:"), 3, 4)'
  4
  5
  6
  $ log 'limit(7:0 & branch("re:"), 3, 4)'
  3
  2
  1
  $ log 'last(0:7 & branch("re:"), 2)'
  6
  7

 (using baseset)

  $ hg debugrevspec --no-show-revs -s 0+1+2+3+4+5+6+7
  * set:
  <baseset [0, 1, 2, 3, 4, 5, 6, 7]>
  $ hg debugrevspec --no-show-revs -s 0::7
  * set:
  <baseset+ [0, 1, 2, 3, 4, 5, 6, 7]>
  $ log 'limit(0+1+2+3+4+5+6+7, 3, 4)'
  4
  5
  6
  $ log 'limit(sort(0::7, rev), 3, 4)'
  4
  5
  6
  $ log 'limit(sort(0::7, -rev), 3, 4)'
  3
  2
  1
  $ log 'last(sort(0::7, rev), 2)'
  6
  7
  $ hg debugrevspec -s 'limit(sort(0::7, rev), 3, 6)'
  * set:
  <baseset+ [6, 7]>
  6
  7
  $ hg debugrevspec -s 'limit(sort(0::7, rev), 3, 9)'
  * set:
  <baseset+ []>
  $ hg debugrevspec -s 'limit(sort(0::7, -rev), 3, 6)'
  * set:
  <baseset- [0, 1]>
  1
  0
  $ hg debugrevspec -s 'limit(sort(0::7, -rev), 3, 9)'
  * set:
  <baseset- []>
  $ hg debugrevspec -s 'limit(0::7, 0)'
  * set:
  <baseset+ []>

 (using spanset)

  $ hg debugrevspec --no-show-revs -s 0:7
  * set:
  <spanset+ 0:8>
  $ log 'limit(0:7, 3, 4)'
  4
  5
  6
  $ log 'limit(7:0, 3, 4)'
  3
  2
  1
  $ log 'limit(0:7, 3, 6)'
  6
  7
  $ log 'limit(7:0, 3, 6)'
  1
  0
  $ log 'last(0:7, 2)'
  6
  7
  $ hg debugrevspec -s 'limit(0:7, 3, 6)'
  * set:
  <spanset+ 6:8>
  6
  7
  $ hg debugrevspec -s 'limit(0:7, 3, 9)'
  * set:
  <spanset+ 8:8>
  $ hg debugrevspec -s 'limit(7:0, 3, 6)'
  * set:
  <spanset- 0:2>
  1
  0
  $ hg debugrevspec -s 'limit(7:0, 3, 9)'
  * set:
  <spanset- 0:0>
  $ hg debugrevspec -s 'limit(0:7, 0)'
  * set:
  <spanset+ 0:0>

Test order of first/last revisions

  $ hg debugrevspec -s 'first(4:0, 3) & 3:'
  * set:
  <filteredset
    <spanset- 2:5>,
    <spanset+ 3:10>>
  4
  3

  $ hg debugrevspec -s '3: & first(4:0, 3)'
  * set:
  <filteredset
    <spanset+ 3:10>,
    <spanset- 2:5>>
  3
  4

  $ hg debugrevspec -s 'last(4:0, 3) & :1'
  * set:
  <filteredset
    <spanset- 0:3>,
    <spanset+ 0:2>>
  1
  0

  $ hg debugrevspec -s ':1 & last(4:0, 3)'
  * set:
  <filteredset
    <spanset+ 0:2>,
    <spanset+ 0:3>>
  0
  1

Test scmutil.revsingle() should return the last revision

  $ hg debugrevspec -s 'last(0::)'
  * set:
  <baseset slice=0:1
    <generatorset->>
  9
  $ hg identify -r '0::' --num
  9

Test matching

  $ log 'matching(6)'
  6
  $ log 'matching(6:7, "phase parents user date branch summary files description substate")'
  6
  7

Testing min and max

max: simple

  $ log 'max(contains(a))'
  5

max: simple on unordered set)

  $ log 'max((4+0+2+5+7) and contains(a))'
  5

max: no result

  $ log 'max(contains(stringthatdoesnotappearanywhere))'

max: no result on unordered set

  $ log 'max((4+0+2+5+7) and contains(stringthatdoesnotappearanywhere))'

min: simple

  $ log 'min(contains(a))'
  0

min: simple on unordered set

  $ log 'min((4+0+2+5+7) and contains(a))'
  0

min: empty

  $ log 'min(contains(stringthatdoesnotappearanywhere))'

min: empty on unordered set

  $ log 'min((4+0+2+5+7) and contains(stringthatdoesnotappearanywhere))'


  $ log 'merge()'
  6
  $ log 'branchpoint()'
  1
  4
  $ log 'modifies(b)'
  4
  $ log 'modifies("path:b")'
  4
  $ log 'modifies("*")'
  4
  6
  $ log 'modifies("set:modified()")'
  4
  $ log 'id(5)'
  2
  $ log 'only(9)'
  8
  9
  $ log 'only(8)'
  8
  $ log 'only(9, 5)'
  2
  4
  8
  9
  $ log 'only(7 + 9, 5 + 2)'
  4
  6
  7
  8
  9

Test empty set input
  $ log 'only(p2())'
  $ log 'only(p1(), p2())'
  0
  1
  2
  4
  8
  9

Test '%' operator

  $ log '9%'
  8
  9
  $ log '9%5'
  2
  4
  8
  9
  $ log '(7 + 9)%(5 + 2)'
  4
  6
  7
  8
  9

Test operand of '%' is optimized recursively (issue4670)

  $ try --optimize '8:9-8%'
  (onlypost
    (minus
      (range
        ('symbol', '8')
        ('symbol', '9'))
      ('symbol', '8')))
  * optimized:
  (func
    ('symbol', 'only')
    (difference
      (range
        ('symbol', '8')
        ('symbol', '9'))
      ('symbol', '8')))
  * set:
  <baseset+ [8, 9]>
  8
  9
  $ try --optimize '(9)%(5)'
  (only
    (group
      ('symbol', '9'))
    (group
      ('symbol', '5')))
  * optimized:
  (func
    ('symbol', 'only')
    (list
      ('symbol', '9')
      ('symbol', '5')))
  * set:
  <baseset+ [2, 4, 8, 9]>
  2
  4
  8
  9

Test the order of operations

  $ log '7 + 9%5 + 2'
  7
  2
  4
  8
  9

Test explicit numeric revision
  $ log 'rev(-2)'
  $ log 'rev(-1)'
  -1
  $ log 'rev(0)'
  0
  $ log 'rev(9)'
  9
  $ log 'rev(10)'
  $ log 'rev(tip)'
  hg: parse error: rev expects a number
  [255]

Test hexadecimal revision
  $ log 'id(2)'
  abort: 00changelog.i@2: ambiguous identifier!
  [255]
  $ log 'id(23268)'
  4
  $ log 'id(2785f51eece)'
  0
  $ log 'id(d5d0dcbdc4d9ff5dbb2d336f32f0bb561c1a532c)'
  8
  $ log 'id(d5d0dcbdc4a)'
  $ log 'id(d5d0dcbdc4w)'
  $ log 'id(d5d0dcbdc4d9ff5dbb2d336f32f0bb561c1a532d)'
  $ log 'id(d5d0dcbdc4d9ff5dbb2d336f32f0bb561c1a532q)'
  $ log 'id(1.0)'
  $ log 'id(xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx)'

Test null revision
  $ log '(null)'
  -1
  $ log '(null:0)'
  -1
  0
  $ log '(0:null)'
  0
  -1
  $ log 'null::0'
  -1
  0
  $ log 'null:tip - 0:'
  -1
  $ log 'null: and null::' | head -1
  -1
  $ log 'null: or 0:' | head -2
  -1
  0
  $ log 'ancestors(null)'
  -1
  $ log 'reverse(null:)' | tail -2
  0
  -1
  $ log 'first(null:)'
  -1
  $ log 'min(null:)'
BROKEN: should be '-1'
  $ log 'tip:null and all()' | tail -2
  1
  0

Test working-directory revision
  $ hg debugrevspec 'wdir()'
  2147483647
  $ hg debugrevspec 'wdir()^'
  9
  $ hg up 7
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg debugrevspec 'wdir()^'
  7
  $ hg debugrevspec 'wdir()^0'
  2147483647
  $ hg debugrevspec 'wdir()~3'
  5
  $ hg debugrevspec 'ancestors(wdir())'
  0
  1
  2
  3
  4
  5
  6
  7
  2147483647
  $ hg debugrevspec 'wdir()~0'
  2147483647
  $ hg debugrevspec 'p1(wdir())'
  7
  $ hg debugrevspec 'p2(wdir())'
  $ hg debugrevspec 'parents(wdir())'
  7
  $ hg debugrevspec 'wdir()^1'
  7
  $ hg debugrevspec 'wdir()^2'
  $ hg debugrevspec 'wdir()^3'
  hg: parse error: ^ expects a number 0, 1, or 2
  [255]
For tests consistency
  $ hg up 9
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg debugrevspec 'tip or wdir()'
  9
  2147483647
  $ hg debugrevspec '0:tip and wdir()'
  $ log '0:wdir()' | tail -3
  8
  9
  2147483647
  $ log 'wdir():0' | head -3
  2147483647
  9
  8
  $ log 'wdir():wdir()'
  2147483647
  $ log '(all() + wdir()) & min(. + wdir())'
  9
  $ log '(all() + wdir()) & max(. + wdir())'
  2147483647
  $ log 'first(wdir() + .)'
  2147483647
  $ log 'last(. + wdir())'
  2147483647

Test working-directory integer revision and node id
(BUG: '0:wdir()' is still needed to populate wdir revision)

  $ hg debugrevspec '0:wdir() & 2147483647'
  2147483647
  $ hg debugrevspec '0:wdir() & rev(2147483647)'
  2147483647
  $ hg debugrevspec '0:wdir() & ffffffffffffffffffffffffffffffffffffffff'
  2147483647
  $ hg debugrevspec '0:wdir() & ffffffffffff'
  2147483647
  $ hg debugrevspec '0:wdir() & id(ffffffffffffffffffffffffffffffffffffffff)'
  2147483647
  $ hg debugrevspec '0:wdir() & id(ffffffffffff)'
  2147483647

  $ cd ..

Test short 'ff...' hash collision
(BUG: '0:wdir()' is still needed to populate wdir revision)

  $ hg init wdir-hashcollision
  $ cd wdir-hashcollision
  $ cat <<EOF >> .hg/hgrc
  > [experimental]
  > stabilization = createmarkers
  > EOF
  $ echo 0 > a
  $ hg ci -qAm 0
  $ for i in 2463 2961 6726 78127; do
  >   hg up -q 0
  >   echo $i > a
  >   hg ci -qm $i
  > done
  $ hg up -q null
  $ hg log -r '0:wdir()' -T '{rev}:{node} {shortest(node, 3)}\n'
  0:b4e73ffab476aa0ee32ed81ca51e07169844bc6a b4e
  1:fffbae3886c8fbb2114296380d276fd37715d571 fffba
  2:fffb6093b00943f91034b9bdad069402c834e572 fffb6
  3:fff48a9b9de34a4d64120c29548214c67980ade3 fff4
  4:ffff85cff0ff78504fcdc3c0bc10de0c65379249 ffff8
  2147483647:ffffffffffffffffffffffffffffffffffffffff fffff
  $ hg debugobsolete fffbae3886c8fbb2114296380d276fd37715d571
  obsoleted 1 changesets

  $ hg debugrevspec '0:wdir() & fff'
  abort: 00changelog.i@fff: ambiguous identifier!
  [255]
  $ hg debugrevspec '0:wdir() & ffff'
  abort: 00changelog.i@ffff: ambiguous identifier!
  [255]
  $ hg debugrevspec '0:wdir() & fffb'
  abort: 00changelog.i@fffb: ambiguous identifier!
  [255]
BROKEN should be '2' (node lookup uses unfiltered repo since dc25ed84bee8)
  $ hg debugrevspec '0:wdir() & id(fffb)'
  2
  $ hg debugrevspec '0:wdir() & ffff8'
  4
  $ hg debugrevspec '0:wdir() & fffff'
  2147483647

  $ cd ..

Test branch() with wdir()

  $ cd repo

  $ log '0:wdir() & branch("literal:é")'
  8
  9
  2147483647
  $ log '0:wdir() & branch("re:é")'
  8
  9
  2147483647
  $ log '0:wdir() & branch("re:^a")'
  0
  2
  $ log '0:wdir() & branch(8)'
  8
  9
  2147483647

branch(wdir()) returns all revisions belonging to the working branch. The wdir
itself isn't returned unless it is explicitly populated.

  $ log 'branch(wdir())'
  8
  9
  $ log '0:wdir() & branch(wdir())'
  8
  9
  2147483647

  $ log 'outgoing()'
  8
  9
  $ log 'outgoing("../remote1")'
  8
  9
  $ log 'outgoing("../remote2")'
  3
  5
  6
  7
  9
  $ log 'p1(merge())'
  5
  $ log 'p2(merge())'
  4
  $ log 'parents(merge())'
  4
  5
  $ log 'p1(branchpoint())'
  0
  2
  $ log 'p2(branchpoint())'
  $ log 'parents(branchpoint())'
  0
  2
  $ log 'removes(a)'
  2
  6
  $ log 'roots(all())'
  0
  $ log 'reverse(2 or 3 or 4 or 5)'
  5
  4
  3
  2
  $ log 'reverse(all())'
  9
  8
  7
  6
  5
  4
  3
  2
  1
  0
  $ log 'reverse(all()) & filelog(b)'
  4
  1
  $ log 'rev(5)'
  5
  $ log 'sort(limit(reverse(all()), 3))'
  7
  8
  9
  $ log 'sort(2 or 3 or 4 or 5, date)'
  2
  3
  5
  4
  $ log 'tagged()'
  6
  $ log 'tag()'
  6
  $ log 'tag(1.0)'
  6
  $ log 'tag(tip)'
  9

Test order of revisions in compound expression
----------------------------------------------

The general rule is that only the outermost (= leftmost) predicate can
enforce its ordering requirement. The other predicates should take the
ordering defined by it.

 'A & B' should follow the order of 'A':

  $ log '2:0 & 0::2'
  2
  1
  0

 'head()' combines sets in right order:

  $ log '2:0 & head()'
  2
  1
  0

 'x:y' takes ordering parameter into account:

  $ try -p optimized '3:0 & 0:3 & not 2:1'
  * optimized:
  (difference
    (and
      (range
        ('symbol', '3')
        ('symbol', '0'))
      (range
        ('symbol', '0')
        ('symbol', '3')))
    (range
      ('symbol', '2')
      ('symbol', '1')))
  * set:
  <filteredset
    <filteredset
      <spanset- 0:4>,
      <spanset+ 0:4>>,
    <not
      <spanset+ 1:3>>>
  3
  0

 'a + b', which is optimized to '_list(a b)', should take the ordering of
 the left expression:

  $ try --optimize '2:0 & (0 + 1 + 2)'
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (group
      (or
        (list
          ('symbol', '0')
          ('symbol', '1')
          ('symbol', '2')))))
  * optimized:
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (func
      ('symbol', '_list')
      ('string', '0\x001\x002')))
  * set:
  <filteredset
    <spanset- 0:3>,
    <baseset [0, 1, 2]>>
  2
  1
  0

 'A + B' should take the ordering of the left expression:

  $ try --optimize '2:0 & (0:1 + 2)'
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (group
      (or
        (list
          (range
            ('symbol', '0')
            ('symbol', '1'))
          ('symbol', '2')))))
  * optimized:
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (or
      (list
        (range
          ('symbol', '0')
          ('symbol', '1'))
        ('symbol', '2'))))
  * set:
  <filteredset
    <spanset- 0:3>,
    <addset
      <spanset+ 0:2>,
      <baseset [2]>>>
  2
  1
  0

 '_intlist(a b)' should behave like 'a + b':

  $ trylist --optimize '2:0 & %ld' 0 1 2
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (func
      ('symbol', '_intlist')
      ('string', '0\x001\x002')))
  * optimized:
  (flipand
    (func
      ('symbol', '_intlist')
      ('string', '0\x001\x002'))
    (range
      ('symbol', '2')
      ('symbol', '0')))
  * set:
  <filteredset
    <spanset- 0:3>,
    <baseset+ [0, 1, 2]>>
  2
  1
  0

  $ trylist --optimize '%ld & 2:0' 0 2 1
  (and
    (func
      ('symbol', '_intlist')
      ('string', '0\x002\x001'))
    (range
      ('symbol', '2')
      ('symbol', '0')))
  * optimized:
  (and
    (func
      ('symbol', '_intlist')
      ('string', '0\x002\x001'))
    (range
      ('symbol', '2')
      ('symbol', '0')))
  * set:
  <filteredset
    <baseset [0, 2, 1]>,
    <spanset- 0:3>>
  0
  2
  1

 '_hexlist(a b)' should behave like 'a + b':

  $ trylist --optimize --bin '2:0 & %ln' `hg log -T '{node} ' -r0:2`
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (func
      ('symbol', '_hexlist')
      ('string', '*'))) (glob)
  * optimized:
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (func
      ('symbol', '_hexlist')
      ('string', '*'))) (glob)
  * set:
  <filteredset
    <spanset- 0:3>,
    <baseset [0, 1, 2]>>
  2
  1
  0

  $ trylist --optimize --bin '%ln & 2:0' `hg log -T '{node} ' -r0+2+1`
  (and
    (func
      ('symbol', '_hexlist')
      ('string', '*')) (glob)
    (range
      ('symbol', '2')
      ('symbol', '0')))
  * optimized:
  (flipand
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (func
      ('symbol', '_hexlist')
      ('string', '*'))) (glob)
  * set:
  <baseset [0, 2, 1]>
  0
  2
  1

 '_list' should not go through the slow follow-order path if order doesn't
 matter:

  $ try -p optimized '2:0 & not (0 + 1)'
  * optimized:
  (difference
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (func
      ('symbol', '_list')
      ('string', '0\x001')))
  * set:
  <filteredset
    <spanset- 0:3>,
    <not
      <baseset [0, 1]>>>
  2

  $ try -p optimized '2:0 & not (0:2 & (0 + 1))'
  * optimized:
  (difference
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (and
      (range
        ('symbol', '0')
        ('symbol', '2'))
      (func
        ('symbol', '_list')
        ('string', '0\x001'))))
  * set:
  <filteredset
    <spanset- 0:3>,
    <not
      <baseset [0, 1]>>>
  2

 because 'present()' does nothing other than suppressing an error, the
 ordering requirement should be forwarded to the nested expression

  $ try -p optimized 'present(2 + 0 + 1)'
  * optimized:
  (func
    ('symbol', 'present')
    (func
      ('symbol', '_list')
      ('string', '2\x000\x001')))
  * set:
  <baseset [2, 0, 1]>
  2
  0
  1

  $ try --optimize '2:0 & present(0 + 1 + 2)'
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (func
      ('symbol', 'present')
      (or
        (list
          ('symbol', '0')
          ('symbol', '1')
          ('symbol', '2')))))
  * optimized:
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (func
      ('symbol', 'present')
      (func
        ('symbol', '_list')
        ('string', '0\x001\x002'))))
  * set:
  <filteredset
    <spanset- 0:3>,
    <baseset [0, 1, 2]>>
  2
  1
  0

 'reverse()' should take effect only if it is the outermost expression:

  $ try --optimize '0:2 & reverse(all())'
  (and
    (range
      ('symbol', '0')
      ('symbol', '2'))
    (func
      ('symbol', 'reverse')
      (func
        ('symbol', 'all')
        None)))
  * optimized:
  (and
    (range
      ('symbol', '0')
      ('symbol', '2'))
    (func
      ('symbol', 'reverse')
      (func
        ('symbol', 'all')
        None)))
  * set:
  <filteredset
    <spanset+ 0:3>,
    <spanset+ 0:10>>
  0
  1
  2

 'sort()' should take effect only if it is the outermost expression:

  $ try --optimize '0:2 & sort(all(), -rev)'
  (and
    (range
      ('symbol', '0')
      ('symbol', '2'))
    (func
      ('symbol', 'sort')
      (list
        (func
          ('symbol', 'all')
          None)
        (negate
          ('symbol', 'rev')))))
  * optimized:
  (and
    (range
      ('symbol', '0')
      ('symbol', '2'))
    (func
      ('symbol', 'sort')
      (list
        (func
          ('symbol', 'all')
          None)
        ('string', '-rev'))))
  * set:
  <filteredset
    <spanset+ 0:3>,
    <spanset+ 0:10>>
  0
  1
  2

 invalid argument passed to noop sort():

  $ log '0:2 & sort()'
  hg: parse error: sort requires one or two arguments
  [255]
  $ log '0:2 & sort(all(), -invalid)'
  hg: parse error: unknown sort key '-invalid'
  [255]

 for 'A & f(B)', 'B' should not be affected by the order of 'A':

  $ try --optimize '2:0 & first(1 + 0 + 2)'
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (func
      ('symbol', 'first')
      (or
        (list
          ('symbol', '1')
          ('symbol', '0')
          ('symbol', '2')))))
  * optimized:
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (func
      ('symbol', 'first')
      (func
        ('symbol', '_list')
        ('string', '1\x000\x002'))))
  * set:
  <filteredset
    <baseset [1]>,
    <spanset- 0:3>>
  1

  $ try --optimize '2:0 & not last(0 + 2 + 1)'
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (not
      (func
        ('symbol', 'last')
        (or
          (list
            ('symbol', '0')
            ('symbol', '2')
            ('symbol', '1'))))))
  * optimized:
  (difference
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (func
      ('symbol', 'last')
      (func
        ('symbol', '_list')
        ('string', '0\x002\x001'))))
  * set:
  <filteredset
    <spanset- 0:3>,
    <not
      <baseset [1]>>>
  2
  0

 for 'A & (op)(B)', 'B' should not be affected by the order of 'A':

  $ try --optimize '2:0 & (1 + 0 + 2):(0 + 2 + 1)'
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (range
      (group
        (or
          (list
            ('symbol', '1')
            ('symbol', '0')
            ('symbol', '2'))))
      (group
        (or
          (list
            ('symbol', '0')
            ('symbol', '2')
            ('symbol', '1'))))))
  * optimized:
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (range
      (func
        ('symbol', '_list')
        ('string', '1\x000\x002'))
      (func
        ('symbol', '_list')
        ('string', '0\x002\x001'))))
  * set:
  <filteredset
    <spanset- 0:3>,
    <baseset [1]>>
  1

 'A & B' can be rewritten as 'flipand(B, A)' by weight.

  $ try --optimize 'contains("glob:*") & (2 + 0 + 1)'
  (and
    (func
      ('symbol', 'contains')
      ('string', 'glob:*'))
    (group
      (or
        (list
          ('symbol', '2')
          ('symbol', '0')
          ('symbol', '1')))))
  * optimized:
  (flipand
    (func
      ('symbol', '_list')
      ('string', '2\x000\x001'))
    (func
      ('symbol', 'contains')
      ('string', 'glob:*')))
  * set:
  <filteredset
    <baseset+ [0, 1, 2]>,
    <contains 'glob:*'>>
  0
  1
  2

 and in this example, 'A & B' is rewritten as 'B & A', but 'A' overrides
 the order appropriately:

  $ try --optimize 'reverse(contains("glob:*")) & (0 + 2 + 1)'
  (and
    (func
      ('symbol', 'reverse')
      (func
        ('symbol', 'contains')
        ('string', 'glob:*')))
    (group
      (or
        (list
          ('symbol', '0')
          ('symbol', '2')
          ('symbol', '1')))))
  * optimized:
  (flipand
    (func
      ('symbol', '_list')
      ('string', '0\x002\x001'))
    (func
      ('symbol', 'reverse')
      (func
        ('symbol', 'contains')
        ('string', 'glob:*'))))
  * set:
  <filteredset
    <baseset- [0, 1, 2]>,
    <contains 'glob:*'>>
  2
  1
  0

test sort revset
--------------------------------------------

test when adding two unordered revsets

  $ log 'sort(keyword(issue) or modifies(b))'
  4
  6

test when sorting a reversed collection in the same way it is

  $ log 'sort(reverse(all()), -rev)'
  9
  8
  7
  6
  5
  4
  3
  2
  1
  0

test when sorting a reversed collection

  $ log 'sort(reverse(all()), rev)'
  0
  1
  2
  3
  4
  5
  6
  7
  8
  9


test sorting two sorted collections in different orders

  $ log 'sort(outgoing() or reverse(removes(a)), rev)'
  2
  6
  8
  9

test sorting two sorted collections in different orders backwards

  $ log 'sort(outgoing() or reverse(removes(a)), -rev)'
  9
  8
  6
  2

test empty sort key which is noop

  $ log 'sort(0 + 2 + 1, "")'
  0
  2
  1

test invalid sort keys

  $ log 'sort(all(), -invalid)'
  hg: parse error: unknown sort key '-invalid'
  [255]

  $ cd ..

test sorting by multiple keys including variable-length strings

  $ hg init sorting
  $ cd sorting
  $ cat <<EOF >> .hg/hgrc
  > [ui]
  > logtemplate = '{rev} {branch|p5}{desc|p5}{author|p5}{date|hgdate}\n'
  > [templatealias]
  > p5(s) = pad(s, 5)
  > EOF
  $ hg branch -qf b12
  $ hg ci -m m111 -u u112 -d '111 10800'
  $ hg branch -qf b11
  $ hg ci -m m12 -u u111 -d '112 7200'
  $ hg branch -qf b111
  $ hg ci -m m11 -u u12 -d '111 3600'
  $ hg branch -qf b112
  $ hg ci -m m111 -u u11 -d '120 0'
  $ hg branch -qf b111
  $ hg ci -m m112 -u u111 -d '110 14400'
  created new head

 compare revisions (has fast path):

  $ hg log -r 'sort(all(), rev)'
  0 b12  m111 u112 111 10800
  1 b11  m12  u111 112 7200
  2 b111 m11  u12  111 3600
  3 b112 m111 u11  120 0
  4 b111 m112 u111 110 14400

  $ hg log -r 'sort(all(), -rev)'
  4 b111 m112 u111 110 14400
  3 b112 m111 u11  120 0
  2 b111 m11  u12  111 3600
  1 b11  m12  u111 112 7200
  0 b12  m111 u112 111 10800

 compare variable-length strings (issue5218):

  $ hg log -r 'sort(all(), branch)'
  1 b11  m12  u111 112 7200
  2 b111 m11  u12  111 3600
  4 b111 m112 u111 110 14400
  3 b112 m111 u11  120 0
  0 b12  m111 u112 111 10800

  $ hg log -r 'sort(all(), -branch)'
  0 b12  m111 u112 111 10800
  3 b112 m111 u11  120 0
  2 b111 m11  u12  111 3600
  4 b111 m112 u111 110 14400
  1 b11  m12  u111 112 7200

  $ hg log -r 'sort(all(), desc)'
  2 b111 m11  u12  111 3600
  0 b12  m111 u112 111 10800
  3 b112 m111 u11  120 0
  4 b111 m112 u111 110 14400
  1 b11  m12  u111 112 7200

  $ hg log -r 'sort(all(), -desc)'
  1 b11  m12  u111 112 7200
  4 b111 m112 u111 110 14400
  0 b12  m111 u112 111 10800
  3 b112 m111 u11  120 0
  2 b111 m11  u12  111 3600

  $ hg log -r 'sort(all(), user)'
  3 b112 m111 u11  120 0
  1 b11  m12  u111 112 7200
  4 b111 m112 u111 110 14400
  0 b12  m111 u112 111 10800
  2 b111 m11  u12  111 3600

  $ hg log -r 'sort(all(), -user)'
  2 b111 m11  u12  111 3600
  0 b12  m111 u112 111 10800
  1 b11  m12  u111 112 7200
  4 b111 m112 u111 110 14400
  3 b112 m111 u11  120 0

 compare dates (tz offset should have no effect):

  $ hg log -r 'sort(all(), date)'
  4 b111 m112 u111 110 14400
  0 b12  m111 u112 111 10800
  2 b111 m11  u12  111 3600
  1 b11  m12  u111 112 7200
  3 b112 m111 u11  120 0

  $ hg log -r 'sort(all(), -date)'
  3 b112 m111 u11  120 0
  1 b11  m12  u111 112 7200
  0 b12  m111 u112 111 10800
  2 b111 m11  u12  111 3600
  4 b111 m112 u111 110 14400

 be aware that 'sort(x, -k)' is not exactly the same as 'reverse(sort(x, k))'
 because '-k' reverses the comparison, not the list itself:

  $ hg log -r 'sort(0 + 2, date)'
  0 b12  m111 u112 111 10800
  2 b111 m11  u12  111 3600

  $ hg log -r 'sort(0 + 2, -date)'
  0 b12  m111 u112 111 10800
  2 b111 m11  u12  111 3600

  $ hg log -r 'reverse(sort(0 + 2, date))'
  2 b111 m11  u12  111 3600
  0 b12  m111 u112 111 10800

 sort by multiple keys:

  $ hg log -r 'sort(all(), "branch -rev")'
  1 b11  m12  u111 112 7200
  4 b111 m112 u111 110 14400
  2 b111 m11  u12  111 3600
  3 b112 m111 u11  120 0
  0 b12  m111 u112 111 10800

  $ hg log -r 'sort(all(), "-desc -date")'
  1 b11  m12  u111 112 7200
  4 b111 m112 u111 110 14400
  3 b112 m111 u11  120 0
  0 b12  m111 u112 111 10800
  2 b111 m11  u12  111 3600

  $ hg log -r 'sort(all(), "user -branch date rev")'
  3 b112 m111 u11  120 0
  4 b111 m112 u111 110 14400
  1 b11  m12  u111 112 7200
  0 b12  m111 u112 111 10800
  2 b111 m11  u12  111 3600

 toposort prioritises graph branches

  $ hg up 2
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ touch a
  $ hg addremove
  adding a
  $ hg ci -m 't1' -u 'tu' -d '130 0'
  created new head
  $ echo 'a' >> a
  $ hg ci -m 't2' -u 'tu' -d '130 0'
  $ hg book book1
  $ hg up 4
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  (leaving bookmark book1)
  $ touch a
  $ hg addremove
  adding a
  $ hg ci -m 't3' -u 'tu' -d '130 0'

  $ hg log -r 'sort(all(), topo)'
  7 b111 t3   tu   130 0
  4 b111 m112 u111 110 14400
  3 b112 m111 u11  120 0
  6 b111 t2   tu   130 0
  5 b111 t1   tu   130 0
  2 b111 m11  u12  111 3600
  1 b11  m12  u111 112 7200
  0 b12  m111 u112 111 10800

  $ hg log -r 'sort(all(), -topo)'
  0 b12  m111 u112 111 10800
  1 b11  m12  u111 112 7200
  2 b111 m11  u12  111 3600
  5 b111 t1   tu   130 0
  6 b111 t2   tu   130 0
  3 b112 m111 u11  120 0
  4 b111 m112 u111 110 14400
  7 b111 t3   tu   130 0

  $ hg log -r 'sort(all(), topo, topo.firstbranch=book1)'
  6 b111 t2   tu   130 0
  5 b111 t1   tu   130 0
  7 b111 t3   tu   130 0
  4 b111 m112 u111 110 14400
  3 b112 m111 u11  120 0
  2 b111 m11  u12  111 3600
  1 b11  m12  u111 112 7200
  0 b12  m111 u112 111 10800

topographical sorting can't be combined with other sort keys, and you can't
use the topo.firstbranch option when topo sort is not active:

  $ hg log -r 'sort(all(), "topo user")'
  hg: parse error: topo sort order cannot be combined with other sort keys
  [255]

  $ hg log -r 'sort(all(), user, topo.firstbranch=book1)'
  hg: parse error: topo.firstbranch can only be used when using the topo sort key
  [255]

topo.firstbranch should accept any kind of expressions:

  $ hg log -r 'sort(0, topo, topo.firstbranch=(book1))'
  0 b12  m111 u112 111 10800

  $ cd ..
  $ cd repo

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]>,
    <generatorset+>>
  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+
    <generatorset+>,
    <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 xrange(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:
  (flipand
    None
    (func
      ('symbol', 'ancestors')
      ('symbol', '1')))
  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]

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")'
  abort: no namespace exists that match 'unknown'!
  [255]
  $ 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
  [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:
  <generatorset+>
  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 > setup.sh <<EOF
  > print 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 > test.sh <<EOF
  > print 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\\'
  [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('custom1()')
  > def custom1(repo, subset, x):
  >     return revset.baseset([1])
  > 
  > raise error.Abort('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('printprevset')
  > def printprevset(ui, repo):
  >     alias = {}
  >     p = encoding.environ.get('P')
  >     if p:
  >         alias['P'] = p
  >     revs = repo.anyrevs(['P'], user=True, localalias=alias)
  >     ui.write('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]
  > stabilization = createmarkers
  > 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

  $ 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