tests/test-revset.t

histedit: move constraint verification to the 'action.verify' method

Action has a method dedicated to verifying its validity. So we move code
related to constrains into that method. This requires a bit more context to the
'verify' method in the same fashion we were passing the 'prev' argument.

This is an extra step before we can simplify the constraint handling code
further.

  $ 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 >> $HGRCPATH << EOF
  > [extensions]
  > testrevset=$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 (
  >     cmdutil,
  >     node as nodemod,
  >     revset,
  > )
  > cmdtable = {}
  > command = cmdutil.command(cmdtable)
  > @command('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 = revset.formatspec(fmt, list(args))
  >     if ui.verbose:
  >         tree = revset.parse(expr, lookup=repo.__contains__)
  >         ui.note(revset.prettyformat(tree), "\n")
  >         if opts["optimize"]:
  >             opttree = revset.optimize(tree)
  >             ui.note("* optimized:\n", revset.prettyformat(opttree), "\n")
  >     func = revset.match(ui, expr, repo)
  >     revs = func(repo)
  >     if ui.verbose:
  >         ui.note("* set:\n", revset.prettyformatset(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+ 0:1>
  0
  1
  $ try --optimize :
  (rangeall
    None)
  * optimized:
  (range
    ('string', '0')
    ('string', 'tip'))
  * set:
  <spanset+ 0:9>
  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
    ('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+ 3:9>
  3
  4
  5
  6
  7
  8
  9
  $ try ':+a+b+c+'
  (rangepre
    ('symbol', '+a+b+c+'))
  * set:
  <spanset+ 0:3>
  0
  1
  2
  3
  $ try -- '-a-b-c-:+a+b+c+'
  (range
    ('symbol', '-a-b-c-')
    ('symbol', '+a+b+c+'))
  * set:
  <spanset- 3:4>
  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
    (and
      ('symbol', '1')
      ('symbol', '2'))
    ('symbol', '3'))
  * set:
  <addset
    <baseset []>,
    <baseset [3]>>
  3
  $ try '1|2&3'
  (or
    ('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
    ('symbol', '1')
    (group
      (or
        ('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)'
  abort: 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 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
      ('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]

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

infix/suffix resolution of ^ operator (issue2884):

 x^:y means (x^):y

  $ try '1^:2'
  (range
    (parentpost
      ('symbol', '1'))
    ('symbol', '2'))
  * set:
  <spanset+ 0:2>
  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+ 8:9>
  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+ 0:2>
  0
  1
  2

  $ try '(3^:4)^:2'
  (range
    (parentpost
      (group
        (range
          (parentpost
            ('symbol', '3'))
          ('symbol', '4'))))
    ('symbol', '2'))
  * set:
  <spanset+ 0:2>
  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+ 4:9>
  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+ 0:2>
  0
  1
  2

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

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

  $ log 'author(bob)'
  2
  $ log 'author("re:bob|test")'
  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 'closed()'
  $ log 'contains(a)'
  0
  1
  3
  5
  $ log 'contains("../repo/a")'
  0
  1
  3
  5
  $ log 'desc(B)'
  5
  $ 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+ 0:9>,
    <grep '\x08issue\\d+'>>
  $ try 'grep(r"\bissue\d+")'
  (func
    ('symbol', 'grep')
    ('string', '\\bissue\\d+'))
  * set:
  <filteredset
    <fullreposet+ 0:9>,
    <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")'
  $ 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 '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 opreand 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
BROKEN: should be '-1'
  $ log 'first(null:)'
BROKEN: should be '-1'
  $ log 'min(null:)'
  $ log 'tip:null and all()' | tail -2
  1
  0

Test working-directory revision
  $ hg debugrevspec 'wdir()'
  2147483647
  $ 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 '(all() + wdir()) & first(wdir() + .)'
  2147483647
  $ log '(all() + wdir()) & last(. + wdir())'
  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

 '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
        ('symbol', '0')
        ('symbol', '1')
        ('symbol', '2'))))
  * optimized:
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (func
      ('symbol', '_list')
      ('string', '0\x001\x002')))
  * set:
  <baseset [0, 1, 2]>
  0
  1
  2
 BROKEN: should be '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
        (range
          ('symbol', '0')
          ('symbol', '1'))
        ('symbol', '2'))))
  * optimized:
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (or
      (range
        ('symbol', '0')
        ('symbol', '1'))
      ('symbol', '2')))
  * set:
  <addset
    <filteredset
      <spanset+ 0:1>,
      <spanset- 0:2>>,
    <baseset [2]>>
  0
  1
  2
 BROKEN: should be '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:
  (and
    (func
      ('symbol', '_intlist')
      ('string', '0\x001\x002'))
    (range
      ('symbol', '2')
      ('symbol', '0')))
  * set:
  <filteredset
    <spanset- 0:2>,
    <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
    <spanset- 0:2>,
    <baseset [0, 2, 1]>>
  2
  1
  0
 BROKEN: should be '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:
  <baseset [0, 1, 2]>
  0
  1
  2
 BROKEN: should be '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:
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (func
      ('symbol', '_hexlist')
      ('string', '*'))) (glob)
  * set:
  <baseset [0, 2, 1]>
  0
  2
  1

 'present()' should do nothing other than suppressing an error:

  $ try --optimize '2:0 & present(0 + 1 + 2)'
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (func
      ('symbol', 'present')
      (or
        ('symbol', '0')
        ('symbol', '1')
        ('symbol', '2'))))
  * optimized:
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (func
      ('symbol', 'present')
      (func
        ('symbol', '_list')
        ('string', '0\x001\x002'))))
  * set:
  <baseset [0, 1, 2]>
  0
  1
  2
 BROKEN: should be '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- 0:2>,
    <spanset+ 0:9>>
  2
  1
  0
 BROKEN: should be '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- 0:2>,
    <spanset+ 0:9>>
  2
  1
  0
 BROKEN: should be '0 1 2'

 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
        ('symbol', '1')
        ('symbol', '0')
        ('symbol', '2'))))
  * optimized:
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (func
      ('symbol', 'first')
      (func
        ('symbol', '_list')
        ('string', '1\x000\x002'))))
  * set:
  <baseset
    <limit n=1, offset=0,
      <spanset- 0:2>,
      <baseset [1, 0, 2]>>>
  1

  $ try --optimize '2:0 & not last(0 + 2 + 1)'
  (and
    (range
      ('symbol', '2')
      ('symbol', '0'))
    (not
      (func
        ('symbol', 'last')
        (or
          ('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- 0:2>,
    <not
      <baseset
        <last n=1,
          <fullreposet+ 0:9>,
          <baseset [1, 2, 0]>>>>>
  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
          ('symbol', '1')
          ('symbol', '0')
          ('symbol', '2')))
      (group
        (or
          ('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
    <baseset [1]>,
    <spanset- 0:2>>
  1

 'A & B' can be rewritten as 'B & A' by weight, but the ordering rule should
 be determined before the optimization (i.e. 'B' should take the ordering of
 'A'):

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

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

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

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
    (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+ 0:1>,
      <spanset+ 1:2>>,
    <addset
      <spanset+ 2:3>,
      <addset
        <spanset+ 3:4>,
        <spanset+ 4:5>>>>
  0
  1
  2
  3
  4
  5

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

  $ try --optimize '0|()'
  (or
    ('symbol', '0')
    (group
      None))
  * optimized:
  (or
    ('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:
  (and
    None
    (func
      ('symbol', 'ancestors')
      ('symbol', '1')))
  hg: parse error: missing argument
  [255]

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 'merge()^^'
  3
  $ log 'merge()^1^'
  3
  $ log 'merge()^^^'
  1

  $ 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]

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 'wdir2()'
  hg: parse error: unknown identifier: wdir2
  [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+ 0:9>,
    <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+ 0:9>,
    <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:
  <addset+
    <filteredset
      <fullreposet+ 0:9>,
      <merge>>,
    <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
    ('symbol', '3')
    (or
      ('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+ 0:9>,
      <spanset+ 2:5>>>
  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
    (range
      ('symbol', '0')
      ('symbol', '1'))
    (range
      ('symbol', '1')
      ('symbol', '2'))
    (range
      ('symbol', '2')
      ('symbol', '3')))
  * set:
  <addset
    <spanset+ 0:1>,
    <addset
      <spanset+ 1:2>,
      <spanset+ 2:3>>>
  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 substituded 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+ 0:9>>
  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
    ('symbol', 'tip')
    (func
      ('symbol', 'desc')
      ('string', '$1')))
  * set:
  <addset
    <baseset [9]>,
    <filteredset
      <fullreposet+ 0:9>,
      <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
        ('symbol', '2')
        ('symbol', '3'))
      ('symbol', 'date')))
  * expanded:
  (func
    ('symbol', 'reverse')
    (func
      ('symbol', 'sort')
      (list
        (or
          ('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
        ('symbol', '2')
        ('symbol', '3'))
      ('symbol', 'x')
      ('symbol', 'x')
      ('symbol', 'date')))
  * expanded:
  (func
    ('symbol', 'reverse')
    (func
      ('symbol', 'sort')
      (list
        (or
          ('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
          ('symbol', '1')
          ('symbol', '2')
          ('symbol', '3'))
        ('symbol', '2')))
    (not
      ('symbol', '2')))
  * set:
  <filteredset
    <baseset
      <limit n=2, offset=0,
        <fullreposet+ 0:9>,
        <baseset [1, 2, 3]>>>,
    <not
      <baseset [2]>>>
  1
  $ try 'max(1 or 2) and not 2'
  (and
    (func
      ('symbol', 'max')
      (or
        ('symbol', '1')
        ('symbol', '2')))
    (not
      ('symbol', '2')))
  * set:
  <filteredset
    <baseset
      <max
        <fullreposet+ 0:9>,
        <baseset [1, 2]>>>,
    <not
      <baseset [2]>>>
  $ try 'min(1 or 2) and not 1'
  (and
    (func
      ('symbol', 'min')
      (or
        ('symbol', '1')
        ('symbol', '2')))
    (not
      ('symbol', '1')))
  * set:
  <filteredset
    <baseset
      <min
        <fullreposet+ 0:9>,
        <baseset [1, 2]>>>,
    <not
      <baseset [1]>>>
  $ try 'last(1 or 2, 1) and not 2'
  (and
    (func
      ('symbol', 'last')
      (list
        (or
          ('symbol', '1')
          ('symbol', '2'))
        ('symbol', '1')))
    (not
      ('symbol', '2')))
  * set:
  <filteredset
    <baseset
      <last n=1,
        <fullreposet+ 0:9>,
        <baseset [2, 1]>>>,
    <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]

  $ cd ..