help: add quotes to a few commands we point to

I didn't know that 'hg help "revsets.x or y"' was valid syntax, so the
quoting is extra useful here to make it clear that that is an actual
command.

Differential Revision: https://phab.mercurial-scm.org/D4059

mercurial/fileset.py

@@ -1,560 +1,560 b''
 # fileset.py - file set queries for mercurial
 #
 # Copyright 2010 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 from __future__ import absolute_import
 
 import errno
 import re
 
 from .i18n import _
 from . import (
     error,
     filesetlang,
     match as matchmod,
     merge,
     pycompat,
     registrar,
     scmutil,
     util,
 )
 from .utils import (
     stringutil,
 )
 
 # helpers for processing parsed tree
 getsymbol = filesetlang.getsymbol
 getstring = filesetlang.getstring
 _getkindpat = filesetlang.getkindpat
 getpattern = filesetlang.getpattern
 getargs = filesetlang.getargs
 
 def getmatch(mctx, x):
     if not x:
         raise error.ParseError(_("missing argument"))
     return methods[x[0]](mctx, *x[1:])
 
 def stringmatch(mctx, x):
     return mctx.matcher([x])
 
 def kindpatmatch(mctx, x, y):
     return stringmatch(mctx, _getkindpat(x, y, matchmod.allpatternkinds,
                                          _("pattern must be a string")))
 
 def andmatch(mctx, x, y):
     xm = getmatch(mctx, x)
     ym = getmatch(mctx, y)
     return matchmod.intersectmatchers(xm, ym)
 
 def ormatch(mctx, *xs):
     ms = [getmatch(mctx, x) for x in xs]
     return matchmod.unionmatcher(ms)
 
 def notmatch(mctx, x):
     m = getmatch(mctx, x)
     return mctx.predicate(lambda f: not m(f), predrepr=('<not %r>', m))
 
 def minusmatch(mctx, x, y):
     xm = getmatch(mctx, x)
     ym = getmatch(mctx, y)
     return matchmod.differencematcher(xm, ym)
 
 def negatematch(mctx, x):
     raise error.ParseError(_("can't use negate operator in this context"))
 
 def listmatch(mctx, *xs):
     raise error.ParseError(_("can't use a list in this context"),
-                           hint=_('see hg help "filesets.x or y"'))
+                           hint=_('see \'hg help "filesets.x or y"\''))
 
 def func(mctx, a, b):
     funcname = getsymbol(a)
     if funcname in symbols:
         return symbols[funcname](mctx, b)
 
     keep = lambda fn: getattr(fn, '__doc__', None) is not None
 
     syms = [s for (s, fn) in symbols.items() if keep(fn)]
     raise error.UnknownIdentifier(funcname, syms)
 
 # symbols are callable like:
 #  fun(mctx, x)
 # with:
 #  mctx - current matchctx instance
 #  x - argument in tree form
 symbols = filesetlang.symbols
 
 # filesets using matchctx.status()
 _statuscallers = set()
 
 predicate = registrar.filesetpredicate()
 
 @predicate('modified()', callstatus=True)
 def modified(mctx, x):
     """File that is modified according to :hg:`status`.
     """
     # i18n: "modified" is a keyword
     getargs(x, 0, 0, _("modified takes no arguments"))
     s = set(mctx.status().modified)
     return mctx.predicate(s.__contains__, predrepr='modified')
 
 @predicate('added()', callstatus=True)
 def added(mctx, x):
     """File that is added according to :hg:`status`.
     """
     # i18n: "added" is a keyword
     getargs(x, 0, 0, _("added takes no arguments"))
     s = set(mctx.status().added)
     return mctx.predicate(s.__contains__, predrepr='added')
 
 @predicate('removed()', callstatus=True)
 def removed(mctx, x):
     """File that is removed according to :hg:`status`.
     """
     # i18n: "removed" is a keyword
     getargs(x, 0, 0, _("removed takes no arguments"))
     s = set(mctx.status().removed)
     return mctx.predicate(s.__contains__, predrepr='removed')
 
 @predicate('deleted()', callstatus=True)
 def deleted(mctx, x):
     """Alias for ``missing()``.
     """
     # i18n: "deleted" is a keyword
     getargs(x, 0, 0, _("deleted takes no arguments"))
     s = set(mctx.status().deleted)
     return mctx.predicate(s.__contains__, predrepr='deleted')
 
 @predicate('missing()', callstatus=True)
 def missing(mctx, x):
     """File that is missing according to :hg:`status`.
     """
     # i18n: "missing" is a keyword
     getargs(x, 0, 0, _("missing takes no arguments"))
     s = set(mctx.status().deleted)
     return mctx.predicate(s.__contains__, predrepr='deleted')
 
 @predicate('unknown()', callstatus=True)
 def unknown(mctx, x):
     """File that is unknown according to :hg:`status`."""
     # i18n: "unknown" is a keyword
     getargs(x, 0, 0, _("unknown takes no arguments"))
     s = set(mctx.status().unknown)
     return mctx.predicate(s.__contains__, predrepr='unknown')
 
 @predicate('ignored()', callstatus=True)
 def ignored(mctx, x):
     """File that is ignored according to :hg:`status`."""
     # i18n: "ignored" is a keyword
     getargs(x, 0, 0, _("ignored takes no arguments"))
     s = set(mctx.status().ignored)
     return mctx.predicate(s.__contains__, predrepr='ignored')
 
 @predicate('clean()', callstatus=True)
 def clean(mctx, x):
     """File that is clean according to :hg:`status`.
     """
     # i18n: "clean" is a keyword
     getargs(x, 0, 0, _("clean takes no arguments"))
     s = set(mctx.status().clean)
     return mctx.predicate(s.__contains__, predrepr='clean')
 
 @predicate('tracked()')
 def tracked(mctx, x):
     """File that is under Mercurial control."""
     # i18n: "tracked" is a keyword
     getargs(x, 0, 0, _("tracked takes no arguments"))
     return mctx.predicate(mctx.ctx.__contains__, predrepr='tracked')
 
 @predicate('binary()')
 def binary(mctx, x):
     """File that appears to be binary (contains NUL bytes).
     """
     # i18n: "binary" is a keyword
     getargs(x, 0, 0, _("binary takes no arguments"))
     return mctx.fpredicate(lambda fctx: fctx.isbinary(),
                            predrepr='binary', cache=True)
 
 @predicate('exec()')
 def exec_(mctx, x):
     """File that is marked as executable.
     """
     # i18n: "exec" is a keyword
     getargs(x, 0, 0, _("exec takes no arguments"))
     ctx = mctx.ctx
     return mctx.predicate(lambda f: ctx.flags(f) == 'x', predrepr='exec')
 
 @predicate('symlink()')
 def symlink(mctx, x):
     """File that is marked as a symlink.
     """
     # i18n: "symlink" is a keyword
     getargs(x, 0, 0, _("symlink takes no arguments"))
     ctx = mctx.ctx
     return mctx.predicate(lambda f: ctx.flags(f) == 'l', predrepr='symlink')
 
 @predicate('resolved()')
 def resolved(mctx, x):
     """File that is marked resolved according to :hg:`resolve -l`.
     """
     # i18n: "resolved" is a keyword
     getargs(x, 0, 0, _("resolved takes no arguments"))
     if mctx.ctx.rev() is not None:
         return mctx.never()
     ms = merge.mergestate.read(mctx.ctx.repo())
     return mctx.predicate(lambda f: f in ms and ms[f] == 'r',
                           predrepr='resolved')
 
 @predicate('unresolved()')
 def unresolved(mctx, x):
     """File that is marked unresolved according to :hg:`resolve -l`.
     """
     # i18n: "unresolved" is a keyword
     getargs(x, 0, 0, _("unresolved takes no arguments"))
     if mctx.ctx.rev() is not None:
         return mctx.never()
     ms = merge.mergestate.read(mctx.ctx.repo())
     return mctx.predicate(lambda f: f in ms and ms[f] == 'u',
                           predrepr='unresolved')
 
 @predicate('hgignore()')
 def hgignore(mctx, x):
     """File that matches the active .hgignore pattern.
     """
     # i18n: "hgignore" is a keyword
     getargs(x, 0, 0, _("hgignore takes no arguments"))
     return mctx.ctx.repo().dirstate._ignore
 
 @predicate('portable()')
 def portable(mctx, x):
     """File that has a portable name. (This doesn't include filenames with case
     collisions.)
     """
     # i18n: "portable" is a keyword
     getargs(x, 0, 0, _("portable takes no arguments"))
     return mctx.predicate(lambda f: util.checkwinfilename(f) is None,
                           predrepr='portable')
 
 @predicate('grep(regex)')
 def grep(mctx, x):
     """File contains the given regular expression.
     """
     try:
         # i18n: "grep" is a keyword
         r = re.compile(getstring(x, _("grep requires a pattern")))
     except re.error as e:
         raise error.ParseError(_('invalid match pattern: %s') %
                                stringutil.forcebytestr(e))
     return mctx.fpredicate(lambda fctx: r.search(fctx.data()),
                            predrepr=('grep(%r)', r.pattern), cache=True)
 
 def _sizetomax(s):
     try:
         s = s.strip().lower()
         for k, v in util._sizeunits:
             if s.endswith(k):
                 # max(4k) = 5k - 1, max(4.5k) = 4.6k - 1
                 n = s[:-len(k)]
                 inc = 1.0
                 if "." in n:
                     inc /= 10 ** len(n.split(".")[1])
                 return int((float(n) + inc) * v) - 1
         # no extension, this is a precise value
         return int(s)
     except ValueError:
         raise error.ParseError(_("couldn't parse size: %s") % s)
 
 def sizematcher(expr):
     """Return a function(size) -> bool from the ``size()`` expression"""
     expr = expr.strip()
     if '-' in expr: # do we have a range?
         a, b = expr.split('-', 1)
         a = util.sizetoint(a)
         b = util.sizetoint(b)
         return lambda x: x >= a and x <= b
     elif expr.startswith("<="):
         a = util.sizetoint(expr[2:])
         return lambda x: x <= a
     elif expr.startswith("<"):
         a = util.sizetoint(expr[1:])
         return lambda x: x < a
     elif expr.startswith(">="):
         a = util.sizetoint(expr[2:])
         return lambda x: x >= a
     elif expr.startswith(">"):
         a = util.sizetoint(expr[1:])
         return lambda x: x > a
     else:
         a = util.sizetoint(expr)
         b = _sizetomax(expr)
         return lambda x: x >= a and x <= b
 
 @predicate('size(expression)')
 def size(mctx, x):
     """File size matches the given expression. Examples:
 
     - size('1k') - files from 1024 to 2047 bytes
     - size('< 20k') - files less than 20480 bytes
     - size('>= .5MB') - files at least 524288 bytes
     - size('4k - 1MB') - files from 4096 bytes to 1048576 bytes
     """
     # i18n: "size" is a keyword
     expr = getstring(x, _("size requires an expression"))
     m = sizematcher(expr)
     return mctx.fpredicate(lambda fctx: m(fctx.size()),
                            predrepr=('size(%r)', expr), cache=True)
 
 @predicate('encoding(name)')
 def encoding(mctx, x):
     """File can be successfully decoded with the given character
     encoding. May not be useful for encodings other than ASCII and
     UTF-8.
     """
 
     # i18n: "encoding" is a keyword
     enc = getstring(x, _("encoding requires an encoding name"))
 
     def encp(fctx):
         d = fctx.data()
         try:
             d.decode(pycompat.sysstr(enc))
             return True
         except LookupError:
             raise error.Abort(_("unknown encoding '%s'") % enc)
         except UnicodeDecodeError:
             return False
 
     return mctx.fpredicate(encp, predrepr=('encoding(%r)', enc), cache=True)
 
 @predicate('eol(style)')
 def eol(mctx, x):
     """File contains newlines of the given style (dos, unix, mac). Binary
     files are excluded, files with mixed line endings match multiple
     styles.
     """
 
     # i18n: "eol" is a keyword
     enc = getstring(x, _("eol requires a style name"))
 
     def eolp(fctx):
         if fctx.isbinary():
             return False
         d = fctx.data()
         if (enc == 'dos' or enc == 'win') and '\r\n' in d:
             return True
         elif enc == 'unix' and re.search('(?<!\r)\n', d):
             return True
         elif enc == 'mac' and re.search('\r(?!\n)', d):
             return True
         return False
     return mctx.fpredicate(eolp, predrepr=('eol(%r)', enc), cache=True)
 
 @predicate('copied()')
 def copied(mctx, x):
     """File that is recorded as being copied.
     """
     # i18n: "copied" is a keyword
     getargs(x, 0, 0, _("copied takes no arguments"))
     def copiedp(fctx):
         p = fctx.parents()
         return p and p[0].path() != fctx.path()
     return mctx.fpredicate(copiedp, predrepr='copied', cache=True)
 
 @predicate('revs(revs, pattern)')
 def revs(mctx, x):
     """Evaluate set in the specified revisions. If the revset match multiple
     revs, this will return file matching pattern in any of the revision.
     """
     # i18n: "revs" is a keyword
     r, x = getargs(x, 2, 2, _("revs takes two arguments"))
     # i18n: "revs" is a keyword
     revspec = getstring(r, _("first argument to revs must be a revision"))
     repo = mctx.ctx.repo()
     revs = scmutil.revrange(repo, [revspec])
 
     matchers = []
     for r in revs:
         ctx = repo[r]
         matchers.append(getmatch(mctx.switch(ctx, _buildstatus(ctx, x)), x))
     if not matchers:
         return mctx.never()
     if len(matchers) == 1:
         return matchers[0]
     return matchmod.unionmatcher(matchers)
 
 @predicate('status(base, rev, pattern)')
 def status(mctx, x):
     """Evaluate predicate using status change between ``base`` and
     ``rev``. Examples:
 
     - ``status(3, 7, added())`` - matches files added from "3" to "7"
     """
     repo = mctx.ctx.repo()
     # i18n: "status" is a keyword
     b, r, x = getargs(x, 3, 3, _("status takes three arguments"))
     # i18n: "status" is a keyword
     baseerr = _("first argument to status must be a revision")
     baserevspec = getstring(b, baseerr)
     if not baserevspec:
         raise error.ParseError(baseerr)
     reverr = _("second argument to status must be a revision")
     revspec = getstring(r, reverr)
     if not revspec:
         raise error.ParseError(reverr)
     basectx, ctx = scmutil.revpair(repo, [baserevspec, revspec])
     return getmatch(mctx.switch(ctx, _buildstatus(ctx, x, basectx=basectx)), x)
 
 @predicate('subrepo([pattern])')
 def subrepo(mctx, x):
     """Subrepositories whose paths match the given pattern.
     """
     # i18n: "subrepo" is a keyword
     getargs(x, 0, 1, _("subrepo takes at most one argument"))
     ctx = mctx.ctx
     sstate = ctx.substate
     if x:
         pat = getpattern(x, matchmod.allpatternkinds,
                          # i18n: "subrepo" is a keyword
                          _("subrepo requires a pattern or no arguments"))
         fast = not matchmod.patkind(pat)
         if fast:
             def m(s):
                 return (s == pat)
         else:
             m = matchmod.match(ctx.repo().root, '', [pat], ctx=ctx)
         return mctx.predicate(lambda f: f in sstate and m(f),
                               predrepr=('subrepo(%r)', pat))
     else:
         return mctx.predicate(sstate.__contains__, predrepr='subrepo')
 
 methods = {
     'string': stringmatch,
     'symbol': stringmatch,
     'kindpat': kindpatmatch,
     'and': andmatch,
     'or': ormatch,
     'minus': minusmatch,
     'negate': negatematch,
     'list': listmatch,
     'group': getmatch,
     'not': notmatch,
     'func': func,
 }
 
 class matchctx(object):
     def __init__(self, ctx, status=None, badfn=None):
         self.ctx = ctx
         self._status = status
         self._badfn = badfn
 
     def status(self):
         return self._status
 
     def matcher(self, patterns):
         return self.ctx.match(patterns, badfn=self._badfn)
 
     def predicate(self, predfn, predrepr=None, cache=False):
         """Create a matcher to select files by predfn(filename)"""
         if cache:
             predfn = util.cachefunc(predfn)
         repo = self.ctx.repo()
         return matchmod.predicatematcher(repo.root, repo.getcwd(), predfn,
                                          predrepr=predrepr, badfn=self._badfn)
 
     def fpredicate(self, predfn, predrepr=None, cache=False):
         """Create a matcher to select files by predfn(fctx) at the current
         revision
 
         Missing files are ignored.
         """
         ctx = self.ctx
         if ctx.rev() is None:
             def fctxpredfn(f):
                 try:
                     fctx = ctx[f]
                 except error.LookupError:
                     return False
                 try:
                     fctx.audit()
                 except error.Abort:
                     return False
                 try:
                     return predfn(fctx)
                 except (IOError, OSError) as e:
                     # open()-ing a directory fails with EACCES on Windows
                     if e.errno in (errno.ENOENT, errno.EACCES, errno.ENOTDIR,
                                    errno.EISDIR):
                         return False
                     raise
         else:
             def fctxpredfn(f):
                 try:
                     fctx = ctx[f]
                 except error.LookupError:
                     return False
                 return predfn(fctx)
         return self.predicate(fctxpredfn, predrepr=predrepr, cache=cache)
 
     def never(self):
         """Create a matcher to select nothing"""
         repo = self.ctx.repo()
         return matchmod.nevermatcher(repo.root, repo.getcwd(),
                                      badfn=self._badfn)
 
     def switch(self, ctx, status=None):
         return matchctx(ctx, status, self._badfn)
 
 # filesets using matchctx.switch()
 _switchcallers = [
     'revs',
     'status',
 ]
 
 def _intree(funcs, tree):
     if isinstance(tree, tuple):
         if tree[0] == 'func' and tree[1][0] == 'symbol':
             if tree[1][1] in funcs:
                 return True
             if tree[1][1] in _switchcallers:
                 # arguments won't be evaluated in the current context
                 return False
         for s in tree[1:]:
             if _intree(funcs, s):
                 return True
     return False
 
 def match(ctx, expr, badfn=None):
     """Create a matcher for a single fileset expression"""
     tree = filesetlang.parse(expr)
     mctx = matchctx(ctx, _buildstatus(ctx, tree), badfn=badfn)
     return getmatch(mctx, tree)
 
 def _buildstatus(ctx, tree, basectx=None):
     # do we need status info?
 
     if _intree(_statuscallers, tree):
         unknown = _intree(['unknown'], tree)
         ignored = _intree(['ignored'], tree)
 
         if basectx is None:
             basectx = ctx.p1()
         return basectx.status(ctx, listunknown=unknown, listignored=ignored,
                               listclean=True)
     else:
         return None
 
 def loadpredicate(ui, extname, registrarobj):
     """Load fileset predicates from specified registrarobj
     """
     for name, func in registrarobj._table.iteritems():
         symbols[name] = func
         if func._callstatus:
             _statuscallers.add(name)
 
 # load built-in predicates explicitly to setup _statuscallers
 loadpredicate(None, None, predicate)
 
 # tell hggettext to extract docstrings from these functions:
 i18nfunctions = symbols.values()

mercurial/minifileset.py

@@ -1,92 +1,92 b''
 # minifileset.py - a simple language to select files
 #
 # Copyright 2017 Facebook, Inc.
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 from __future__ import absolute_import
 
 from .i18n import _
 from . import (
     error,
     fileset,
     filesetlang,
     pycompat,
 )
 
 def _sizep(x):
     # i18n: "size" is a keyword
     expr = filesetlang.getstring(x, _("size requires an expression"))
     return fileset.sizematcher(expr)
 
 def _compile(tree):
     if not tree:
         raise error.ParseError(_("missing argument"))
     op = tree[0]
     if op in {'symbol', 'string', 'kindpat'}:
         name = filesetlang.getpattern(tree, {'path'}, _('invalid file pattern'))
         if name.startswith('**'): # file extension test, ex. "**.tar.gz"
             ext = name[2:]
             for c in pycompat.bytestr(ext):
                 if c in '*{}[]?/\\':
                     raise error.ParseError(_('reserved character: %s') % c)
             return lambda n, s: n.endswith(ext)
         elif name.startswith('path:'): # directory or full path test
             p = name[5:] # prefix
             pl = len(p)
             f = lambda n, s: n.startswith(p) and (len(n) == pl
                                                   or n[pl:pl + 1] == '/')
             return f
         raise error.ParseError(_("unsupported file pattern: %s") % name,
                                hint=_('paths must be prefixed with "path:"'))
     elif op == 'or':
         funcs = [_compile(x) for x in tree[1:]]
         return lambda n, s: any(f(n, s) for f in funcs)
     elif op == 'and':
         func1 = _compile(tree[1])
         func2 = _compile(tree[2])
         return lambda n, s: func1(n, s) and func2(n, s)
     elif op == 'not':
         return lambda n, s: not _compile(tree[1])(n, s)
     elif op == 'group':
         return _compile(tree[1])
     elif op == 'func':
         symbols = {
             'all': lambda n, s: True,
             'none': lambda n, s: False,
             'size': lambda n, s: _sizep(tree[2])(s),
         }
 
         name = filesetlang.getsymbol(tree[1])
         if name in symbols:
             return symbols[name]
 
         raise error.UnknownIdentifier(name, symbols.keys())
     elif op == 'minus':     # equivalent to 'x and not y'
         func1 = _compile(tree[1])
         func2 = _compile(tree[2])
         return lambda n, s: func1(n, s) and not func2(n, s)
     elif op == 'negate':
         raise error.ParseError(_("can't use negate operator in this context"))
     elif op == 'list':
         raise error.ParseError(_("can't use a list in this context"),
-                               hint=_('see hg help "filesets.x or y"'))
+                               hint=_('see \'hg help "filesets.x or y"\''))
     raise error.ProgrammingError('illegal tree: %r' % (tree,))
 
 def compile(text):
     """generate a function (path, size) -> bool from filter specification.
 
     "text" could contain the operators defined by the fileset language for
     common logic operations, and parenthesis for grouping.  The supported path
     tests are '**.extname' for file extension test, and '"path:dir/subdir"'
     for prefix test.  The ``size()`` predicate is borrowed from filesets to test
     file size.  The predicates ``all()`` and ``none()`` are also supported.
 
     '(**.php & size(">10MB")) | **.zip | (path:bin & !path:bin/README)' for
     example, will catch all php files whose size is greater than 10 MB, all
     files whose name ends with ".zip", and all files under "bin" in the repo
     root except for "bin/README".
     """
     tree = filesetlang.parse(text)
     return _compile(tree)

mercurial/revset.py

@@ -1,2282 +1,2282 b''
 # revset.py - revision set queries for mercurial
 #
 # Copyright 2010 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 from __future__ import absolute_import
 
 import re
 
 from .i18n import _
 from . import (
     dagop,
     destutil,
     diffutil,
     encoding,
     error,
     hbisect,
     match as matchmod,
     node,
     obsolete as obsmod,
     obsutil,
     pathutil,
     phases,
     pycompat,
     registrar,
     repoview,
     revsetlang,
     scmutil,
     smartset,
     stack as stackmod,
     util,
 )
 from .utils import (
     dateutil,
     stringutil,
 )
 
 # helpers for processing parsed tree
 getsymbol = revsetlang.getsymbol
 getstring = revsetlang.getstring
 getinteger = revsetlang.getinteger
 getboolean = revsetlang.getboolean
 getlist = revsetlang.getlist
 getrange = revsetlang.getrange
 getargs = revsetlang.getargs
 getargsdict = revsetlang.getargsdict
 
 baseset = smartset.baseset
 generatorset = smartset.generatorset
 spanset = smartset.spanset
 fullreposet = smartset.fullreposet
 
 # Constants for ordering requirement, used in getset():
 #
 # If 'define', any nested functions and operations MAY change the ordering of
 # the entries in the set (but if changes the ordering, it MUST ALWAYS change
 # it). If 'follow', any nested functions and operations MUST take the ordering
 # specified by the first operand to the '&' operator.
 #
 # For instance,
 #
 #   X & (Y | Z)
 #   ^   ^^^^^^^
 #   |   follow
 #   define
 #
 # will be evaluated as 'or(y(x()), z(x()))', where 'x()' can change the order
 # of the entries in the set, but 'y()', 'z()' and 'or()' shouldn't.
 #
 # 'any' means the order doesn't matter. For instance,
 #
 #   (X & !Y) | ancestors(Z)
 #         ^              ^
 #         any            any
 #
 # For 'X & !Y', 'X' decides the order and 'Y' is subtracted from 'X', so the
 # order of 'Y' does not matter. For 'ancestors(Z)', Z's order does not matter
 # since 'ancestors' does not care about the order of its argument.
 #
 # Currently, most revsets do not care about the order, so 'define' is
 # equivalent to 'follow' for them, and the resulting order is based on the
 # 'subset' parameter passed down to them:
 #
 #   m = revset.match(...)
 #   m(repo, subset, order=defineorder)
 #           ^^^^^^
 #      For most revsets, 'define' means using the order this subset provides
 #
 # There are a few revsets that always redefine the order if 'define' is
 # specified: 'sort(X)', 'reverse(X)', 'x:y'.
 anyorder = 'any'        # don't care the order, could be even random-shuffled
 defineorder = 'define'  # ALWAYS redefine, or ALWAYS follow the current order
 followorder = 'follow'  # MUST follow the current order
 
 # helpers
 
 def getset(repo, subset, x, order=defineorder):
     if not x:
         raise error.ParseError(_("missing argument"))
     return methods[x[0]](repo, subset, *x[1:], order=order)
 
 def _getrevsource(repo, r):
     extra = repo[r].extra()
     for label in ('source', 'transplant_source', 'rebase_source'):
         if label in extra:
             try:
                 return repo[extra[label]].rev()
             except error.RepoLookupError:
                 pass
     return None
 
 def _sortedb(xs):
     return sorted(pycompat.rapply(pycompat.maybebytestr, xs))
 
 # operator methods
 
 def stringset(repo, subset, x, order):
     if not x:
         raise error.ParseError(_("empty string is not a valid revision"))
     x = scmutil.intrev(scmutil.revsymbol(repo, x))
     if (x in subset
         or x == node.nullrev and isinstance(subset, fullreposet)):
         return baseset([x])
     return baseset()
 
 def rangeset(repo, subset, x, y, order):
     m = getset(repo, fullreposet(repo), x)
     n = getset(repo, fullreposet(repo), y)
 
     if not m or not n:
         return baseset()
     return _makerangeset(repo, subset, m.first(), n.last(), order)
 
 def rangeall(repo, subset, x, order):
     assert x is None
     return _makerangeset(repo, subset, 0, repo.changelog.tiprev(), order)
 
 def rangepre(repo, subset, y, order):
     # ':y' can't be rewritten to '0:y' since '0' may be hidden
     n = getset(repo, fullreposet(repo), y)
     if not n:
         return baseset()
     return _makerangeset(repo, subset, 0, n.last(), order)
 
 def rangepost(repo, subset, x, order):
     m = getset(repo, fullreposet(repo), x)
     if not m:
         return baseset()
     return _makerangeset(repo, subset, m.first(), repo.changelog.tiprev(),
                          order)
 
 def _makerangeset(repo, subset, m, n, order):
     if m == n:
         r = baseset([m])
     elif n == node.wdirrev:
         r = spanset(repo, m, len(repo)) + baseset([n])
     elif m == node.wdirrev:
         r = baseset([m]) + spanset(repo, repo.changelog.tiprev(), n - 1)
     elif m < n:
         r = spanset(repo, m, n + 1)
     else:
         r = spanset(repo, m, n - 1)
 
     if order == defineorder:
         return r & subset
     else:
         # carrying the sorting over when possible would be more efficient
         return subset & r
 
 def dagrange(repo, subset, x, y, order):
     r = fullreposet(repo)
     xs = dagop.reachableroots(repo, getset(repo, r, x), getset(repo, r, y),
                               includepath=True)
     return subset & xs
 
 def andset(repo, subset, x, y, order):
     if order == anyorder:
         yorder = anyorder
     else:
         yorder = followorder
     return getset(repo, getset(repo, subset, x, order), y, yorder)
 
 def andsmallyset(repo, subset, x, y, order):
     # 'andsmally(x, y)' is equivalent to 'and(x, y)', but faster when y is small
     if order == anyorder:
         yorder = anyorder
     else:
         yorder = followorder
     return getset(repo, getset(repo, subset, y, yorder), x, order)
 
 def differenceset(repo, subset, x, y, order):
     return getset(repo, subset, x, order) - getset(repo, subset, y, anyorder)
 
 def _orsetlist(repo, subset, xs, order):
     assert xs
     if len(xs) == 1:
         return getset(repo, subset, xs[0], order)
     p = len(xs) // 2
     a = _orsetlist(repo, subset, xs[:p], order)
     b = _orsetlist(repo, subset, xs[p:], order)
     return a + b
 
 def orset(repo, subset, x, order):
     xs = getlist(x)
     if not xs:
         return baseset()
     if order == followorder:
         # slow path to take the subset order
         return subset & _orsetlist(repo, fullreposet(repo), xs, anyorder)
     else:
         return _orsetlist(repo, subset, xs, order)
 
 def notset(repo, subset, x, order):
     return subset - getset(repo, subset, x, anyorder)
 
 def relationset(repo, subset, x, y, order):
     raise error.ParseError(_("can't use a relation in this context"))
 
 def relsubscriptset(repo, subset, x, y, z, order):
     # this is pretty basic implementation of 'x#y[z]' operator, still
     # experimental so undocumented. see the wiki for further ideas.
     # https://www.mercurial-scm.org/wiki/RevsetOperatorPlan
     rel = getsymbol(y)
     n = getinteger(z, _("relation subscript must be an integer"))
 
     # TODO: perhaps this should be a table of relation functions
     if rel in ('g', 'generations'):
         # TODO: support range, rewrite tests, and drop startdepth argument
         # from ancestors() and descendants() predicates
         if n <= 0:
             n = -n
             return _ancestors(repo, subset, x, startdepth=n, stopdepth=n + 1)
         else:
             return _descendants(repo, subset, x, startdepth=n, stopdepth=n + 1)
 
     raise error.UnknownIdentifier(rel, ['generations'])
 
 def subscriptset(repo, subset, x, y, order):
     raise error.ParseError(_("can't use a subscript in this context"))
 
 def listset(repo, subset, *xs, **opts):
     raise error.ParseError(_("can't use a list in this context"),
-                           hint=_('see hg help "revsets.x or y"'))
+                           hint=_('see \'hg help "revsets.x or y"\''))
 
 def keyvaluepair(repo, subset, k, v, order):
     raise error.ParseError(_("can't use a key-value pair in this context"))
 
 def func(repo, subset, a, b, order):
     f = getsymbol(a)
     if f in symbols:
         func = symbols[f]
         if getattr(func, '_takeorder', False):
             return func(repo, subset, b, order)
         return func(repo, subset, b)
 
     keep = lambda fn: getattr(fn, '__doc__', None) is not None
 
     syms = [s for (s, fn) in symbols.items() if keep(fn)]
     raise error.UnknownIdentifier(f, syms)
 
 # functions
 
 # symbols are callables like:
 #   fn(repo, subset, x)
 # with:
 #   repo - current repository instance
 #   subset - of revisions to be examined
 #   x - argument in tree form
 symbols = revsetlang.symbols
 
 # symbols which can't be used for a DoS attack for any given input
 # (e.g. those which accept regexes as plain strings shouldn't be included)
 # functions that just return a lot of changesets (like all) don't count here
 safesymbols = set()
 
 predicate = registrar.revsetpredicate()
 
 @predicate('_destupdate')
 def _destupdate(repo, subset, x):
     # experimental revset for update destination
     args = getargsdict(x, 'limit', 'clean')
     return subset & baseset([destutil.destupdate(repo,
                             **pycompat.strkwargs(args))[0]])
 
 @predicate('_destmerge')
 def _destmerge(repo, subset, x):
     # experimental revset for merge destination
     sourceset = None
     if x is not None:
         sourceset = getset(repo, fullreposet(repo), x)
     return subset & baseset([destutil.destmerge(repo, sourceset=sourceset)])
 
 @predicate('adds(pattern)', safe=True, weight=30)
 def adds(repo, subset, x):
     """Changesets that add a file matching pattern.
 
     The pattern without explicit kind like ``glob:`` is expected to be
     relative to the current directory and match against a file or a
     directory.
     """
     # i18n: "adds" is a keyword
     pat = getstring(x, _("adds requires a pattern"))
     return checkstatus(repo, subset, pat, 1)
 
 @predicate('ancestor(*changeset)', safe=True, weight=0.5)
 def ancestor(repo, subset, x):
     """A greatest common ancestor of the changesets.
 
     Accepts 0 or more changesets.
     Will return empty list when passed no args.
     Greatest common ancestor of a single changeset is that changeset.
     """
     reviter = iter(orset(repo, fullreposet(repo), x, order=anyorder))
     try:
         anc = repo[next(reviter)]
     except StopIteration:
         return baseset()
     for r in reviter:
         anc = anc.ancestor(repo[r])
 
     r = scmutil.intrev(anc)
     if r in subset:
         return baseset([r])
     return baseset()
 
 def _ancestors(repo, subset, x, followfirst=False, startdepth=None,
                stopdepth=None):
     heads = getset(repo, fullreposet(repo), x)
     if not heads:
         return baseset()
     s = dagop.revancestors(repo, heads, followfirst, startdepth, stopdepth)
     return subset & s
 
 @predicate('ancestors(set[, depth])', safe=True)
 def ancestors(repo, subset, x):
     """Changesets that are ancestors of changesets in set, including the
     given changesets themselves.
 
     If depth is specified, the result only includes changesets up to
     the specified generation.
     """
     # startdepth is for internal use only until we can decide the UI
     args = getargsdict(x, 'ancestors', 'set depth startdepth')
     if 'set' not in args:
         # i18n: "ancestors" is a keyword
         raise error.ParseError(_('ancestors takes at least 1 argument'))
     startdepth = stopdepth = None
     if 'startdepth' in args:
         n = getinteger(args['startdepth'],
                        "ancestors expects an integer startdepth")
         if n < 0:
             raise error.ParseError("negative startdepth")
         startdepth = n
     if 'depth' in args:
         # i18n: "ancestors" is a keyword
         n = getinteger(args['depth'], _("ancestors expects an integer depth"))
         if n < 0:
             raise error.ParseError(_("negative depth"))
         stopdepth = n + 1
     return _ancestors(repo, subset, args['set'],
                       startdepth=startdepth, stopdepth=stopdepth)
 
 @predicate('_firstancestors', safe=True)
 def _firstancestors(repo, subset, x):
     # ``_firstancestors(set)``
     # Like ``ancestors(set)`` but follows only the first parents.
     return _ancestors(repo, subset, x, followfirst=True)
 
 def _childrenspec(repo, subset, x, n, order):
     """Changesets that are the Nth child of a changeset
     in set.
     """
     cs = set()
     for r in getset(repo, fullreposet(repo), x):
         for i in range(n):
             c = repo[r].children()
             if len(c) == 0:
                 break
             if len(c) > 1:
                 raise error.RepoLookupError(
                     _("revision in set has more than one child"))
             r = c[0].rev()
         else:
             cs.add(r)
     return subset & cs
 
 def ancestorspec(repo, subset, x, n, order):
     """``set~n``
     Changesets that are the Nth ancestor (first parents only) of a changeset
     in set.
     """
     n = getinteger(n, _("~ expects a number"))
     if n < 0:
         # children lookup
         return _childrenspec(repo, subset, x, -n, order)
     ps = set()
     cl = repo.changelog
     for r in getset(repo, fullreposet(repo), x):
         for i in range(n):
             try:
                 r = cl.parentrevs(r)[0]
             except error.WdirUnsupported:
                 r = repo[r].parents()[0].rev()
         ps.add(r)
     return subset & ps
 
 @predicate('author(string)', safe=True, weight=10)
 def author(repo, subset, x):
     """Alias for ``user(string)``.
     """
     # i18n: "author" is a keyword
     n = getstring(x, _("author requires a string"))
     kind, pattern, matcher = _substringmatcher(n, casesensitive=False)
     return subset.filter(lambda x: matcher(repo[x].user()),
                          condrepr=('<user %r>', n))
 
 @predicate('bisect(string)', safe=True)
 def bisect(repo, subset, x):
     """Changesets marked in the specified bisect status:
 
     - ``good``, ``bad``, ``skip``: csets explicitly marked as good/bad/skip
     - ``goods``, ``bads``      : csets topologically good/bad
     - ``range``              : csets taking part in the bisection
     - ``pruned``             : csets that are goods, bads or skipped
     - ``untested``           : csets whose fate is yet unknown
     - ``ignored``            : csets ignored due to DAG topology
     - ``current``            : the cset currently being bisected
     """
     # i18n: "bisect" is a keyword
     status = getstring(x, _("bisect requires a string")).lower()
     state = set(hbisect.get(repo, status))
     return subset & state
 
 # Backward-compatibility
 # - no help entry so that we do not advertise it any more
 @predicate('bisected', safe=True)
 def bisected(repo, subset, x):
     return bisect(repo, subset, x)
 
 @predicate('bookmark([name])', safe=True)
 def bookmark(repo, subset, x):
     """The named bookmark or all bookmarks.
 
     Pattern matching is supported for `name`. See :hg:`help revisions.patterns`.
     """
     # i18n: "bookmark" is a keyword
     args = getargs(x, 0, 1, _('bookmark takes one or no arguments'))
     if args:
         bm = getstring(args[0],
                        # i18n: "bookmark" is a keyword
                        _('the argument to bookmark must be a string'))
         kind, pattern, matcher = stringutil.stringmatcher(bm)
         bms = set()
         if kind == 'literal':
             bmrev = repo._bookmarks.get(pattern, None)
             if not bmrev:
                 raise error.RepoLookupError(_("bookmark '%s' does not exist")
                                             % pattern)
             bms.add(repo[bmrev].rev())
         else:
             matchrevs = set()
             for name, bmrev in repo._bookmarks.iteritems():
                 if matcher(name):
                     matchrevs.add(bmrev)
             if not matchrevs:
                 raise error.RepoLookupError(_("no bookmarks exist"
                                               " that match '%s'") % pattern)
             for bmrev in matchrevs:
                 bms.add(repo[bmrev].rev())
     else:
         bms = {repo[r].rev() for r in repo._bookmarks.values()}
     bms -= {node.nullrev}
     return subset & bms
 
 @predicate('branch(string or set)', safe=True, weight=10)
 def branch(repo, subset, x):
     """
     All changesets belonging to the given branch or the branches of the given
     changesets.
 
     Pattern matching is supported for `string`. See
     :hg:`help revisions.patterns`.
     """
     getbi = repo.revbranchcache().branchinfo
     def getbranch(r):
         try:
             return getbi(r)[0]
         except error.WdirUnsupported:
             return repo[r].branch()
 
     try:
         b = getstring(x, '')
     except error.ParseError:
         # not a string, but another revspec, e.g. tip()
         pass
     else:
         kind, pattern, matcher = stringutil.stringmatcher(b)
         if kind == 'literal':
             # note: falls through to the revspec case if no branch with
             # this name exists and pattern kind is not specified explicitly
             if pattern in repo.branchmap():
                 return subset.filter(lambda r: matcher(getbranch(r)),
                                      condrepr=('<branch %r>', b))
             if b.startswith('literal:'):
                 raise error.RepoLookupError(_("branch '%s' does not exist")
                                             % pattern)
         else:
             return subset.filter(lambda r: matcher(getbranch(r)),
                                  condrepr=('<branch %r>', b))
 
     s = getset(repo, fullreposet(repo), x)
     b = set()
     for r in s:
         b.add(getbranch(r))
     c = s.__contains__
     return subset.filter(lambda r: c(r) or getbranch(r) in b,
                          condrepr=lambda: '<branch %r>' % _sortedb(b))
 
 @predicate('phasedivergent()', safe=True)
 def phasedivergent(repo, subset, x):
     """Mutable changesets marked as successors of public changesets.
 
     Only non-public and non-obsolete changesets can be `phasedivergent`.
     (EXPERIMENTAL)
     """
     # i18n: "phasedivergent" is a keyword
     getargs(x, 0, 0, _("phasedivergent takes no arguments"))
     phasedivergent = obsmod.getrevs(repo, 'phasedivergent')
     return subset & phasedivergent
 
 @predicate('bundle()', safe=True)
 def bundle(repo, subset, x):
     """Changesets in the bundle.
 
     Bundle must be specified by the -R option."""
 
     try:
         bundlerevs = repo.changelog.bundlerevs
     except AttributeError:
         raise error.Abort(_("no bundle provided - specify with -R"))
     return subset & bundlerevs
 
 def checkstatus(repo, subset, pat, field):
     hasset = matchmod.patkind(pat) == 'set'
 
     mcache = [None]
     def matches(x):
         c = repo[x]
         if not mcache[0] or hasset:
             mcache[0] = matchmod.match(repo.root, repo.getcwd(), [pat], ctx=c)
         m = mcache[0]
         fname = None
         if not m.anypats() and len(m.files()) == 1:
             fname = m.files()[0]
         if fname is not None:
             if fname not in c.files():
                 return False
         else:
             for f in c.files():
                 if m(f):
                     break
             else:
                 return False
         files = repo.status(c.p1().node(), c.node())[field]
         if fname is not None:
             if fname in files:
                 return True
         else:
             for f in files:
                 if m(f):
                     return True
 
     return subset.filter(matches, condrepr=('<status[%r] %r>', field, pat))
 
 def _children(repo, subset, parentset):
     if not parentset:
         return baseset()
     cs = set()
     pr = repo.changelog.parentrevs
     minrev = parentset.min()
     nullrev = node.nullrev
     for r in subset:
         if r <= minrev:
             continue
         p1, p2 = pr(r)
         if p1 in parentset:
             cs.add(r)
         if p2 != nullrev and p2 in parentset:
             cs.add(r)
     return baseset(cs)
 
 @predicate('children(set)', safe=True)
 def children(repo, subset, x):
     """Child changesets of changesets in set.
     """
     s = getset(repo, fullreposet(repo), x)
     cs = _children(repo, subset, s)
     return subset & cs
 
 @predicate('closed()', safe=True, weight=10)
 def closed(repo, subset, x):
     """Changeset is closed.
     """
     # i18n: "closed" is a keyword
     getargs(x, 0, 0, _("closed takes no arguments"))
     return subset.filter(lambda r: repo[r].closesbranch(),
                          condrepr='<branch closed>')
 
 # for internal use
 @predicate('_commonancestorheads(set)', safe=True)
 def _commonancestorheads(repo, subset, x):
     # This is an internal method is for quickly calculating "heads(::x and
     # ::y)"
 
     # These greatest common ancestors are the same ones that the consesus bid
     # merge will find.
     h = heads(repo, fullreposet(repo), x, anyorder)
 
     ancs = repo.changelog._commonancestorsheads(*list(h))
     return subset & baseset(ancs)
 
 @predicate('commonancestors(set)', safe=True)
 def commonancestors(repo, subset, x):
     """Returns all common ancestors of the set.
 
     This method is for calculating "::x and ::y" (i.e. all the ancestors that
     are common to both x and y) in an easy and optimized way. We can't quite
     use "::head()" because that revset returns "::x + ::y + ..." for each head
     in the repo (whereas we want "::x *and* ::y").
 
     """
     # only wants the heads of the set passed in
     h = heads(repo, fullreposet(repo), x, anyorder)
     if not h:
         return baseset()
     for r in h:
         subset &= dagop.revancestors(repo, baseset([r]))
 
     return subset
 
 @predicate('contains(pattern)', weight=100)
 def contains(repo, subset, x):
     """The revision's manifest contains a file matching pattern (but might not
     modify it). See :hg:`help patterns` for information about file patterns.
 
     The pattern without explicit kind like ``glob:`` is expected to be
     relative to the current directory and match against a file exactly
     for efficiency.
     """
     # i18n: "contains" is a keyword
     pat = getstring(x, _("contains requires a pattern"))
 
     def matches(x):
         if not matchmod.patkind(pat):
             pats = pathutil.canonpath(repo.root, repo.getcwd(), pat)
             if pats in repo[x]:
                 return True
         else:
             c = repo[x]
             m = matchmod.match(repo.root, repo.getcwd(), [pat], ctx=c)
             for f in c.manifest():
                 if m(f):
                     return True
         return False
 
     return subset.filter(matches, condrepr=('<contains %r>', pat))
 
 @predicate('converted([id])', safe=True)
 def converted(repo, subset, x):
     """Changesets converted from the given identifier in the old repository if
     present, or all converted changesets if no identifier is specified.
     """
 
     # There is exactly no chance of resolving the revision, so do a simple
     # string compare and hope for the best
 
     rev = None
     # i18n: "converted" is a keyword
     l = getargs(x, 0, 1, _('converted takes one or no arguments'))
     if l:
         # i18n: "converted" is a keyword
         rev = getstring(l[0], _('converted requires a revision'))
 
     def _matchvalue(r):
         source = repo[r].extra().get('convert_revision', None)
         return source is not None and (rev is None or source.startswith(rev))
 
     return subset.filter(lambda r: _matchvalue(r),
                          condrepr=('<converted %r>', rev))
 
 @predicate('date(interval)', safe=True, weight=10)
 def date(repo, subset, x):
     """Changesets within the interval, see :hg:`help dates`.
     """
     # i18n: "date" is a keyword
     ds = getstring(x, _("date requires a string"))
     dm = dateutil.matchdate(ds)
     return subset.filter(lambda x: dm(repo[x].date()[0]),
                          condrepr=('<date %r>', ds))
 
 @predicate('desc(string)', safe=True, weight=10)
 def desc(repo, subset, x):
     """Search commit message for string. The match is case-insensitive.
 
     Pattern matching is supported for `string`. See
     :hg:`help revisions.patterns`.
     """
     # i18n: "desc" is a keyword
     ds = getstring(x, _("desc requires a string"))
 
     kind, pattern, matcher = _substringmatcher(ds, casesensitive=False)
 
     return subset.filter(lambda r: matcher(repo[r].description()),
                          condrepr=('<desc %r>', ds))
 
 def _descendants(repo, subset, x, followfirst=False, startdepth=None,
                  stopdepth=None):
     roots = getset(repo, fullreposet(repo), x)
     if not roots:
         return baseset()
     s = dagop.revdescendants(repo, roots, followfirst, startdepth, stopdepth)
     return subset & s
 
 @predicate('descendants(set[, depth])', safe=True)
 def descendants(repo, subset, x):
     """Changesets which are descendants of changesets in set, including the
     given changesets themselves.
 
     If depth is specified, the result only includes changesets up to
     the specified generation.
     """
     # startdepth is for internal use only until we can decide the UI
     args = getargsdict(x, 'descendants', 'set depth startdepth')
     if 'set' not in args:
         # i18n: "descendants" is a keyword
         raise error.ParseError(_('descendants takes at least 1 argument'))
     startdepth = stopdepth = None
     if 'startdepth' in args:
         n = getinteger(args['startdepth'],
                        "descendants expects an integer startdepth")
         if n < 0:
             raise error.ParseError("negative startdepth")
         startdepth = n
     if 'depth' in args:
         # i18n: "descendants" is a keyword
         n = getinteger(args['depth'], _("descendants expects an integer depth"))
         if n < 0:
             raise error.ParseError(_("negative depth"))
         stopdepth = n + 1
     return _descendants(repo, subset, args['set'],
                         startdepth=startdepth, stopdepth=stopdepth)
 
 @predicate('_firstdescendants', safe=True)
 def _firstdescendants(repo, subset, x):
     # ``_firstdescendants(set)``
     # Like ``descendants(set)`` but follows only the first parents.
     return _descendants(repo, subset, x, followfirst=True)
 
 @predicate('destination([set])', safe=True, weight=10)
 def destination(repo, subset, x):
     """Changesets that were created by a graft, transplant or rebase operation,
     with the given revisions specified as the source.  Omitting the optional set
     is the same as passing all().
     """
     if x is not None:
         sources = getset(repo, fullreposet(repo), x)
     else:
         sources = fullreposet(repo)
 
     dests = set()
 
     # subset contains all of the possible destinations that can be returned, so
     # iterate over them and see if their source(s) were provided in the arg set.
     # Even if the immediate src of r is not in the arg set, src's source (or
     # further back) may be.  Scanning back further than the immediate src allows
     # transitive transplants and rebases to yield the same results as transitive
     # grafts.
     for r in subset:
         src = _getrevsource(repo, r)
         lineage = None
 
         while src is not None:
             if lineage is None:
                 lineage = list()
 
             lineage.append(r)
 
             # The visited lineage is a match if the current source is in the arg
             # set.  Since every candidate dest is visited by way of iterating
             # subset, any dests further back in the lineage will be tested by a
             # different iteration over subset.  Likewise, if the src was already
             # selected, the current lineage can be selected without going back
             # further.
             if src in sources or src in dests:
                 dests.update(lineage)
                 break
 
             r = src
             src = _getrevsource(repo, r)
 
     return subset.filter(dests.__contains__,
                          condrepr=lambda: '<destination %r>' % _sortedb(dests))
 
 @predicate('contentdivergent()', safe=True)
 def contentdivergent(repo, subset, x):
     """
     Final successors of changesets with an alternative set of final
     successors. (EXPERIMENTAL)
     """
     # i18n: "contentdivergent" is a keyword
     getargs(x, 0, 0, _("contentdivergent takes no arguments"))
     contentdivergent = obsmod.getrevs(repo, 'contentdivergent')
     return subset & contentdivergent
 
 @predicate('extdata(source)', safe=False, weight=100)
 def extdata(repo, subset, x):
     """Changesets in the specified extdata source. (EXPERIMENTAL)"""
     # i18n: "extdata" is a keyword
     args = getargsdict(x, 'extdata', 'source')
     source = getstring(args.get('source'),
                        # i18n: "extdata" is a keyword
                        _('extdata takes at least 1 string argument'))
     data = scmutil.extdatasource(repo, source)
     return subset & baseset(data)
 
 @predicate('extinct()', safe=True)
 def extinct(repo, subset, x):
     """Obsolete changesets with obsolete descendants only.
     """
     # i18n: "extinct" is a keyword
     getargs(x, 0, 0, _("extinct takes no arguments"))
     extincts = obsmod.getrevs(repo, 'extinct')
     return subset & extincts
 
 @predicate('extra(label, [value])', safe=True)
 def extra(repo, subset, x):
     """Changesets with the given label in the extra metadata, with the given
     optional value.
 
     Pattern matching is supported for `value`. See
     :hg:`help revisions.patterns`.
     """
     args = getargsdict(x, 'extra', 'label value')
     if 'label' not in args:
         # i18n: "extra" is a keyword
         raise error.ParseError(_('extra takes at least 1 argument'))
     # i18n: "extra" is a keyword
     label = getstring(args['label'], _('first argument to extra must be '
                                        'a string'))
     value = None
 
     if 'value' in args:
         # i18n: "extra" is a keyword
         value = getstring(args['value'], _('second argument to extra must be '
                                            'a string'))
         kind, value, matcher = stringutil.stringmatcher(value)
 
     def _matchvalue(r):
         extra = repo[r].extra()
         return label in extra and (value is None or matcher(extra[label]))
 
     return subset.filter(lambda r: _matchvalue(r),
                          condrepr=('<extra[%r] %r>', label, value))
 
 @predicate('filelog(pattern)', safe=True)
 def filelog(repo, subset, x):
     """Changesets connected to the specified filelog.
 
     For performance reasons, visits only revisions mentioned in the file-level
     filelog, rather than filtering through all changesets (much faster, but
     doesn't include deletes or duplicate changes). For a slower, more accurate
     result, use ``file()``.
 
     The pattern without explicit kind like ``glob:`` is expected to be
     relative to the current directory and match against a file exactly
     for efficiency.
 
     If some linkrev points to revisions filtered by the current repoview, we'll
     work around it to return a non-filtered value.
     """
 
     # i18n: "filelog" is a keyword
     pat = getstring(x, _("filelog requires a pattern"))
     s = set()
     cl = repo.changelog
 
     if not matchmod.patkind(pat):
         f = pathutil.canonpath(repo.root, repo.getcwd(), pat)
         files = [f]
     else:
         m = matchmod.match(repo.root, repo.getcwd(), [pat], ctx=repo[None])
         files = (f for f in repo[None] if m(f))
 
     for f in files:
         fl = repo.file(f)
         known = {}
         scanpos = 0
         for fr in list(fl):
             fn = fl.node(fr)
             if fn in known:
                 s.add(known[fn])
                 continue
 
             lr = fl.linkrev(fr)
             if lr in cl:
                 s.add(lr)
             elif scanpos is not None:
                 # lowest matching changeset is filtered, scan further
                 # ahead in changelog
                 start = max(lr, scanpos) + 1
                 scanpos = None
                 for r in cl.revs(start):
                     # minimize parsing of non-matching entries
                     if f in cl.revision(r) and f in cl.readfiles(r):
                         try:
                             # try to use manifest delta fastpath
                             n = repo[r].filenode(f)
                             if n not in known:
                                 if n == fn:
                                     s.add(r)
                                     scanpos = r
                                     break
                                 else:
                                     known[n] = r
                         except error.ManifestLookupError:
                             # deletion in changelog
                             continue
 
     return subset & s
 
 @predicate('first(set, [n])', safe=True, takeorder=True, weight=0)
 def first(repo, subset, x, order):
     """An alias for limit().
     """
     return limit(repo, subset, x, order)
 
 def _follow(repo, subset, x, name, followfirst=False):
     args = getargsdict(x, name, 'file startrev')
     revs = None
     if 'startrev' in args:
         revs = getset(repo, fullreposet(repo), args['startrev'])
     if 'file' in args:
         x = getstring(args['file'], _("%s expected a pattern") % name)
         if revs is None:
             revs = [None]
         fctxs = []
         for r in revs:
             ctx = mctx = repo[r]
             if r is None:
                 ctx = repo['.']
             m = matchmod.match(repo.root, repo.getcwd(), [x],
                                ctx=mctx, default='path')
             fctxs.extend(ctx[f].introfilectx() for f in ctx.manifest().walk(m))
         s = dagop.filerevancestors(fctxs, followfirst)
     else:
         if revs is None:
             revs = baseset([repo['.'].rev()])
         s = dagop.revancestors(repo, revs, followfirst)
 
     return subset & s
 
 @predicate('follow([file[, startrev]])', safe=True)
 def follow(repo, subset, x):
     """
     An alias for ``::.`` (ancestors of the working directory's first parent).
     If file pattern is specified, the histories of files matching given
     pattern in the revision given by startrev are followed, including copies.
     """
     return _follow(repo, subset, x, 'follow')
 
 @predicate('_followfirst', safe=True)
 def _followfirst(repo, subset, x):
     # ``followfirst([file[, startrev]])``
     # Like ``follow([file[, startrev]])`` but follows only the first parent
     # of every revisions or files revisions.
     return _follow(repo, subset, x, '_followfirst', followfirst=True)
 
 @predicate('followlines(file, fromline:toline[, startrev=., descend=False])',
            safe=True)
 def followlines(repo, subset, x):
     """Changesets modifying `file` in line range ('fromline', 'toline').
 
     Line range corresponds to 'file' content at 'startrev' and should hence be
     consistent with file size. If startrev is not specified, working directory's
     parent is used.
 
     By default, ancestors of 'startrev' are returned. If 'descend' is True,
     descendants of 'startrev' are returned though renames are (currently) not
     followed in this direction.
     """
     args = getargsdict(x, 'followlines', 'file *lines startrev descend')
     if len(args['lines']) != 1:
         raise error.ParseError(_("followlines requires a line range"))
 
     rev = '.'
     if 'startrev' in args:
         revs = getset(repo, fullreposet(repo), args['startrev'])
         if len(revs) != 1:
             raise error.ParseError(
                 # i18n: "followlines" is a keyword
                 _("followlines expects exactly one revision"))
         rev = revs.last()
 
     pat = getstring(args['file'], _("followlines requires a pattern"))
     # i18n: "followlines" is a keyword
     msg = _("followlines expects exactly one file")
     fname = scmutil.parsefollowlinespattern(repo, rev, pat, msg)
     # i18n: "followlines" is a keyword
     lr = getrange(args['lines'][0], _("followlines expects a line range"))
     fromline, toline = [getinteger(a, _("line range bounds must be integers"))
                         for a in lr]
     fromline, toline = util.processlinerange(fromline, toline)
 
     fctx = repo[rev].filectx(fname)
     descend = False
     if 'descend' in args:
         descend = getboolean(args['descend'],
                              # i18n: "descend" is a keyword
                              _("descend argument must be a boolean"))
     if descend:
         rs = generatorset(
             (c.rev() for c, _linerange
              in dagop.blockdescendants(fctx, fromline, toline)),
             iterasc=True)
     else:
         rs = generatorset(
             (c.rev() for c, _linerange
              in dagop.blockancestors(fctx, fromline, toline)),
             iterasc=False)
     return subset & rs
 
 @predicate('all()', safe=True)
 def getall(repo, subset, x):
     """All changesets, the same as ``0:tip``.
     """
     # i18n: "all" is a keyword
     getargs(x, 0, 0, _("all takes no arguments"))
     return subset & spanset(repo)  # drop "null" if any
 
 @predicate('grep(regex)', weight=10)
 def grep(repo, subset, x):
     """Like ``keyword(string)`` but accepts a regex. Use ``grep(r'...')``
     to ensure special escape characters are handled correctly. Unlike
     ``keyword(string)``, the match is case-sensitive.
     """
     try:
         # i18n: "grep" is a keyword
         gr = re.compile(getstring(x, _("grep requires a string")))
     except re.error as e:
         raise error.ParseError(
             _('invalid match pattern: %s') % stringutil.forcebytestr(e))
 
     def matches(x):
         c = repo[x]
         for e in c.files() + [c.user(), c.description()]:
             if gr.search(e):
                 return True
         return False
 
     return subset.filter(matches, condrepr=('<grep %r>', gr.pattern))
 
 @predicate('_matchfiles', safe=True)
 def _matchfiles(repo, subset, x):
     # _matchfiles takes a revset list of prefixed arguments:
     #
     #   [p:foo, i:bar, x:baz]
     #
     # builds a match object from them and filters subset. Allowed
     # prefixes are 'p:' for regular patterns, 'i:' for include
     # patterns and 'x:' for exclude patterns. Use 'r:' prefix to pass
     # a revision identifier, or the empty string to reference the
     # working directory, from which the match object is
     # initialized. Use 'd:' to set the default matching mode, default
     # to 'glob'. At most one 'r:' and 'd:' argument can be passed.
 
     l = getargs(x, 1, -1, "_matchfiles requires at least one argument")
     pats, inc, exc = [], [], []
     rev, default = None, None
     for arg in l:
         s = getstring(arg, "_matchfiles requires string arguments")
         prefix, value = s[:2], s[2:]
         if prefix == 'p:':
             pats.append(value)
         elif prefix == 'i:':
             inc.append(value)
         elif prefix == 'x:':
             exc.append(value)
         elif prefix == 'r:':
             if rev is not None:
                 raise error.ParseError('_matchfiles expected at most one '
                                        'revision')
             if value == '': # empty means working directory
                 rev = node.wdirrev
             else:
                 rev = value
         elif prefix == 'd:':
             if default is not None:
                 raise error.ParseError('_matchfiles expected at most one '
                                        'default mode')
             default = value
         else:
             raise error.ParseError('invalid _matchfiles prefix: %s' % prefix)
     if not default:
         default = 'glob'
     hasset = any(matchmod.patkind(p) == 'set' for p in pats + inc + exc)
 
     mcache = [None]
 
     # This directly read the changelog data as creating changectx for all
     # revisions is quite expensive.
     getfiles = repo.changelog.readfiles
     wdirrev = node.wdirrev
     def matches(x):
         if x == wdirrev:
             files = repo[x].files()
         else:
             files = getfiles(x)
 
         if not mcache[0] or (hasset and rev is None):
             r = x if rev is None else rev
             mcache[0] = matchmod.match(repo.root, repo.getcwd(), pats,
                                        include=inc, exclude=exc, ctx=repo[r],
                                        default=default)
         m = mcache[0]
 
         for f in files:
             if m(f):
                 return True
         return False
 
     return subset.filter(matches,
                          condrepr=('<matchfiles patterns=%r, include=%r '
                                    'exclude=%r, default=%r, rev=%r>',
                                    pats, inc, exc, default, rev))
 
 @predicate('file(pattern)', safe=True, weight=10)
 def hasfile(repo, subset, x):
     """Changesets affecting files matched by pattern.
 
     For a faster but less accurate result, consider using ``filelog()``
     instead.
 
     This predicate uses ``glob:`` as the default kind of pattern.
     """
     # i18n: "file" is a keyword
     pat = getstring(x, _("file requires a pattern"))
     return _matchfiles(repo, subset, ('string', 'p:' + pat))
 
 @predicate('head()', safe=True)
 def head(repo, subset, x):
     """Changeset is a named branch head.
     """
     # i18n: "head" is a keyword
     getargs(x, 0, 0, _("head takes no arguments"))
     hs = set()
     cl = repo.changelog
     for ls in repo.branchmap().itervalues():
         hs.update(cl.rev(h) for h in ls)
     return subset & baseset(hs)
 
 @predicate('heads(set)', safe=True, takeorder=True)
 def heads(repo, subset, x, order):
     """Members of set with no children in set.
     """
     # argument set should never define order
     if order == defineorder:
         order = followorder
     s = getset(repo, subset, x, order=order)
     ps = parents(repo, subset, x)
     return s - ps
 
 @predicate('hidden()', safe=True)
 def hidden(repo, subset, x):
     """Hidden changesets.
     """
     # i18n: "hidden" is a keyword
     getargs(x, 0, 0, _("hidden takes no arguments"))
     hiddenrevs = repoview.filterrevs(repo, 'visible')
     return subset & hiddenrevs
 
 @predicate('keyword(string)', safe=True, weight=10)
 def keyword(repo, subset, x):
     """Search commit message, user name, and names of changed files for
     string. The match is case-insensitive.
 
     For a regular expression or case sensitive search of these fields, use
     ``grep(regex)``.
     """
     # i18n: "keyword" is a keyword
     kw = encoding.lower(getstring(x, _("keyword requires a string")))
 
     def matches(r):
         c = repo[r]
         return any(kw in encoding.lower(t)
                    for t in c.files() + [c.user(), c.description()])
 
     return subset.filter(matches, condrepr=('<keyword %r>', kw))
 
 @predicate('limit(set[, n[, offset]])', safe=True, takeorder=True, weight=0)
 def limit(repo, subset, x, order):
     """First n members of set, defaulting to 1, starting from offset.
     """
     args = getargsdict(x, 'limit', 'set n offset')
     if 'set' not in args:
         # i18n: "limit" is a keyword
         raise error.ParseError(_("limit requires one to three arguments"))
     # i18n: "limit" is a keyword
     lim = getinteger(args.get('n'), _("limit expects a number"), default=1)
     if lim < 0:
         raise error.ParseError(_("negative number to select"))
     # i18n: "limit" is a keyword
     ofs = getinteger(args.get('offset'), _("limit expects a number"), default=0)
     if ofs < 0:
         raise error.ParseError(_("negative offset"))
     os = getset(repo, fullreposet(repo), args['set'])
     ls = os.slice(ofs, ofs + lim)
     if order == followorder and lim > 1:
         return subset & ls
     return ls & subset
 
 @predicate('last(set, [n])', safe=True, takeorder=True)
 def last(repo, subset, x, order):
     """Last n members of set, defaulting to 1.
     """
     # i18n: "last" is a keyword
     l = getargs(x, 1, 2, _("last requires one or two arguments"))
     lim = 1
     if len(l) == 2:
         # i18n: "last" is a keyword
         lim = getinteger(l[1], _("last expects a number"))
     if lim < 0:
         raise error.ParseError(_("negative number to select"))
     os = getset(repo, fullreposet(repo), l[0])
     os.reverse()
     ls = os.slice(0, lim)
     if order == followorder and lim > 1:
         return subset & ls
     ls.reverse()
     return ls & subset
 
 @predicate('max(set)', safe=True)
 def maxrev(repo, subset, x):
     """Changeset with highest revision number in set.
     """
     os = getset(repo, fullreposet(repo), x)
     try:
         m = os.max()
         if m in subset:
             return baseset([m], datarepr=('<max %r, %r>', subset, os))
     except ValueError:
         # os.max() throws a ValueError when the collection is empty.
         # Same as python's max().
         pass
     return baseset(datarepr=('<max %r, %r>', subset, os))
 
 @predicate('merge()', safe=True)
 def merge(repo, subset, x):
     """Changeset is a merge changeset.
     """
     # i18n: "merge" is a keyword
     getargs(x, 0, 0, _("merge takes no arguments"))
     cl = repo.changelog
     return subset.filter(lambda r: cl.parentrevs(r)[1] != -1,
                          condrepr='<merge>')
 
 @predicate('branchpoint()', safe=True)
 def branchpoint(repo, subset, x):
     """Changesets with more than one child.
     """
     # i18n: "branchpoint" is a keyword
     getargs(x, 0, 0, _("branchpoint takes no arguments"))
     cl = repo.changelog
     if not subset:
         return baseset()
     # XXX this should be 'parentset.min()' assuming 'parentset' is a smartset
     # (and if it is not, it should.)
     baserev = min(subset)
     parentscount = [0]*(len(repo) - baserev)
     for r in cl.revs(start=baserev + 1):
         for p in cl.parentrevs(r):
             if p >= baserev:
                 parentscount[p - baserev] += 1
     return subset.filter(lambda r: parentscount[r - baserev] > 1,
                          condrepr='<branchpoint>')
 
 @predicate('min(set)', safe=True)
 def minrev(repo, subset, x):
     """Changeset with lowest revision number in set.
     """
     os = getset(repo, fullreposet(repo), x)
     try:
         m = os.min()
         if m in subset:
             return baseset([m], datarepr=('<min %r, %r>', subset, os))
     except ValueError:
         # os.min() throws a ValueError when the collection is empty.
         # Same as python's min().
         pass
     return baseset(datarepr=('<min %r, %r>', subset, os))
 
 @predicate('modifies(pattern)', safe=True, weight=30)
 def modifies(repo, subset, x):
     """Changesets modifying files matched by pattern.
 
     The pattern without explicit kind like ``glob:`` is expected to be
     relative to the current directory and match against a file or a
     directory.
     """
     # i18n: "modifies" is a keyword
     pat = getstring(x, _("modifies requires a pattern"))
     return checkstatus(repo, subset, pat, 0)
 
 @predicate('named(namespace)')
 def named(repo, subset, x):
     """The changesets in a given namespace.
 
     Pattern matching is supported for `namespace`. See
     :hg:`help revisions.patterns`.
     """
     # i18n: "named" is a keyword
     args = getargs(x, 1, 1, _('named requires a namespace argument'))
 
     ns = getstring(args[0],
                    # i18n: "named" is a keyword
                    _('the argument to named must be a string'))
     kind, pattern, matcher = stringutil.stringmatcher(ns)
     namespaces = set()
     if kind == 'literal':
         if pattern not in repo.names:
             raise error.RepoLookupError(_("namespace '%s' does not exist")
                                         % ns)
         namespaces.add(repo.names[pattern])
     else:
         for name, ns in repo.names.iteritems():
             if matcher(name):
                 namespaces.add(ns)
         if not namespaces:
             raise error.RepoLookupError(_("no namespace exists"
                                           " that match '%s'") % pattern)
 
     names = set()
     for ns in namespaces:
         for name in ns.listnames(repo):
             if name not in ns.deprecated:
                 names.update(repo[n].rev() for n in ns.nodes(repo, name))
 
     names -= {node.nullrev}
     return subset & names
 
 @predicate('id(string)', safe=True)
 def node_(repo, subset, x):
     """Revision non-ambiguously specified by the given hex string prefix.
     """
     # i18n: "id" is a keyword
     l = getargs(x, 1, 1, _("id requires one argument"))
     # i18n: "id" is a keyword
     n = getstring(l[0], _("id requires a string"))
     if len(n) == 40:
         try:
             rn = repo.changelog.rev(node.bin(n))
         except error.WdirUnsupported:
             rn = node.wdirrev
         except (LookupError, TypeError):
             rn = None
     else:
         rn = None
         try:
             pm = scmutil.resolvehexnodeidprefix(repo, n)
             if pm is not None:
                 rn = repo.changelog.rev(pm)
         except LookupError:
             pass
         except error.WdirUnsupported:
             rn = node.wdirrev
 
     if rn is None:
         return baseset()
     result = baseset([rn])
     return result & subset
 
 @predicate('none()', safe=True)
 def none(repo, subset, x):
     """No changesets.
     """
     # i18n: "none" is a keyword
     getargs(x, 0, 0, _("none takes no arguments"))
     return baseset()
 
 @predicate('obsolete()', safe=True)
 def obsolete(repo, subset, x):
     """Mutable changeset with a newer version."""
     # i18n: "obsolete" is a keyword
     getargs(x, 0, 0, _("obsolete takes no arguments"))
     obsoletes = obsmod.getrevs(repo, 'obsolete')
     return subset & obsoletes
 
 @predicate('only(set, [set])', safe=True)
 def only(repo, subset, x):
     """Changesets that are ancestors of the first set that are not ancestors
     of any other head in the repo. If a second set is specified, the result
     is ancestors of the first set that are not ancestors of the second set
     (i.e. ::<set1> - ::<set2>).
     """
     cl = repo.changelog
     # i18n: "only" is a keyword
     args = getargs(x, 1, 2, _('only takes one or two arguments'))
     include = getset(repo, fullreposet(repo), args[0])
     if len(args) == 1:
         if not include:
             return baseset()
 
         descendants = set(dagop.revdescendants(repo, include, False))
         exclude = [rev for rev in cl.headrevs()
             if not rev in descendants and not rev in include]
     else:
         exclude = getset(repo, fullreposet(repo), args[1])
 
     results = set(cl.findmissingrevs(common=exclude, heads=include))
     # XXX we should turn this into a baseset instead of a set, smartset may do
     # some optimizations from the fact this is a baseset.
     return subset & results
 
 @predicate('origin([set])', safe=True)
 def origin(repo, subset, x):
     """
     Changesets that were specified as a source for the grafts, transplants or
     rebases that created the given revisions.  Omitting the optional set is the
     same as passing all().  If a changeset created by these operations is itself
     specified as a source for one of these operations, only the source changeset
     for the first operation is selected.
     """
     if x is not None:
         dests = getset(repo, fullreposet(repo), x)
     else:
         dests = fullreposet(repo)
 
     def _firstsrc(rev):
         src = _getrevsource(repo, rev)
         if src is None:
             return None
 
         while True:
             prev = _getrevsource(repo, src)
 
             if prev is None:
                 return src
             src = prev
 
     o = {_firstsrc(r) for r in dests}
     o -= {None}
     # XXX we should turn this into a baseset instead of a set, smartset may do
     # some optimizations from the fact this is a baseset.
     return subset & o
 
 @predicate('outgoing([path])', safe=False, weight=10)
 def outgoing(repo, subset, x):
     """Changesets not found in the specified destination repository, or the
     default push location.
     """
     # Avoid cycles.
     from . import (
         discovery,
         hg,
     )
     # i18n: "outgoing" is a keyword
     l = getargs(x, 0, 1, _("outgoing takes one or no arguments"))
     # i18n: "outgoing" is a keyword
     dest = l and getstring(l[0], _("outgoing requires a repository path")) or ''
     if not dest:
         # ui.paths.getpath() explicitly tests for None, not just a boolean
         dest = None
     path = repo.ui.paths.getpath(dest, default=('default-push', 'default'))
     if not path:
         raise error.Abort(_('default repository not configured!'),
                 hint=_("see 'hg help config.paths'"))
     dest = path.pushloc or path.loc
     branches = path.branch, []
 
     revs, checkout = hg.addbranchrevs(repo, repo, branches, [])
     if revs:
         revs = [repo.lookup(rev) for rev in revs]
     other = hg.peer(repo, {}, dest)
     repo.ui.pushbuffer()
     outgoing = discovery.findcommonoutgoing(repo, other, onlyheads=revs)
     repo.ui.popbuffer()
     cl = repo.changelog
     o = {cl.rev(r) for r in outgoing.missing}
     return subset & o
 
 @predicate('p1([set])', safe=True)
 def p1(repo, subset, x):
     """First parent of changesets in set, or the working directory.
     """
     if x is None:
         p = repo[x].p1().rev()
         if p >= 0:
             return subset & baseset([p])
         return baseset()
 
     ps = set()
     cl = repo.changelog
     for r in getset(repo, fullreposet(repo), x):
         try:
             ps.add(cl.parentrevs(r)[0])
         except error.WdirUnsupported:
             ps.add(repo[r].parents()[0].rev())
     ps -= {node.nullrev}
     # XXX we should turn this into a baseset instead of a set, smartset may do
     # some optimizations from the fact this is a baseset.
     return subset & ps
 
 @predicate('p2([set])', safe=True)
 def p2(repo, subset, x):
     """Second parent of changesets in set, or the working directory.
     """
     if x is None:
         ps = repo[x].parents()
         try:
             p = ps[1].rev()
             if p >= 0:
                 return subset & baseset([p])
             return baseset()
         except IndexError:
             return baseset()
 
     ps = set()
     cl = repo.changelog
     for r in getset(repo, fullreposet(repo), x):
         try:
             ps.add(cl.parentrevs(r)[1])
         except error.WdirUnsupported:
             parents = repo[r].parents()
             if len(parents) == 2:
                 ps.add(parents[1])
     ps -= {node.nullrev}
     # XXX we should turn this into a baseset instead of a set, smartset may do
     # some optimizations from the fact this is a baseset.
     return subset & ps
 
 def parentpost(repo, subset, x, order):
     return p1(repo, subset, x)
 
 @predicate('parents([set])', safe=True)
 def parents(repo, subset, x):
     """
     The set of all parents for all changesets in set, or the working directory.
     """
     if x is None:
         ps = set(p.rev() for p in repo[x].parents())
     else:
         ps = set()
         cl = repo.changelog
         up = ps.update
         parentrevs = cl.parentrevs
         for r in getset(repo, fullreposet(repo), x):
             try:
                 up(parentrevs(r))
             except error.WdirUnsupported:
                 up(p.rev() for p in repo[r].parents())
     ps -= {node.nullrev}
     return subset & ps
 
 def _phase(repo, subset, *targets):
     """helper to select all rev in <targets> phases"""
     return repo._phasecache.getrevset(repo, targets, subset)
 
 @predicate('draft()', safe=True)
 def draft(repo, subset, x):
     """Changeset in draft phase."""
     # i18n: "draft" is a keyword
     getargs(x, 0, 0, _("draft takes no arguments"))
     target = phases.draft
     return _phase(repo, subset, target)
 
 @predicate('secret()', safe=True)
 def secret(repo, subset, x):
     """Changeset in secret phase."""
     # i18n: "secret" is a keyword
     getargs(x, 0, 0, _("secret takes no arguments"))
     target = phases.secret
     return _phase(repo, subset, target)
 
 @predicate('stack([revs])', safe=True)
 def stack(repo, subset, x):
     """Experimental revset for the stack of changesets or working directory
     parent. (EXPERIMENTAL)
     """
     if x is None:
         stacks = stackmod.getstack(repo, x)
     else:
         stacks = smartset.baseset([])
         for revision in getset(repo, fullreposet(repo), x):
             currentstack = stackmod.getstack(repo, revision)
             stacks = stacks + currentstack
 
     return subset & stacks
 
 def parentspec(repo, subset, x, n, order):
     """``set^0``
     The set.
     ``set^1`` (or ``set^``), ``set^2``
     First or second parent, respectively, of all changesets in set.
     """
     try:
         n = int(n[1])
         if n not in (0, 1, 2):
             raise ValueError
     except (TypeError, ValueError):
         raise error.ParseError(_("^ expects a number 0, 1, or 2"))
     ps = set()
     cl = repo.changelog
     for r in getset(repo, fullreposet(repo), x):
         if n == 0:
             ps.add(r)
         elif n == 1:
             try:
                 ps.add(cl.parentrevs(r)[0])
             except error.WdirUnsupported:
                 ps.add(repo[r].parents()[0].rev())
         else:
             try:
                 parents = cl.parentrevs(r)
                 if parents[1] != node.nullrev:
                     ps.add(parents[1])
             except error.WdirUnsupported:
                 parents = repo[r].parents()
                 if len(parents) == 2:
                     ps.add(parents[1].rev())
     return subset & ps
 
 @predicate('present(set)', safe=True, takeorder=True)
 def present(repo, subset, x, order):
     """An empty set, if any revision in set isn't found; otherwise,
     all revisions in set.
 
     If any of specified revisions is not present in the local repository,
     the query is normally aborted. But this predicate allows the query
     to continue even in such cases.
     """
     try:
         return getset(repo, subset, x, order)
     except error.RepoLookupError:
         return baseset()
 
 # for internal use
 @predicate('_notpublic', safe=True)
 def _notpublic(repo, subset, x):
     getargs(x, 0, 0, "_notpublic takes no arguments")
     return _phase(repo, subset, phases.draft, phases.secret)
 
 # for internal use
 @predicate('_phaseandancestors(phasename, set)', safe=True)
 def _phaseandancestors(repo, subset, x):
     # equivalent to (phasename() & ancestors(set)) but more efficient
     # phasename could be one of 'draft', 'secret', or '_notpublic'
     args = getargs(x, 2, 2, "_phaseandancestors requires two arguments")
     phasename = getsymbol(args[0])
     s = getset(repo, fullreposet(repo), args[1])
 
     draft = phases.draft
     secret = phases.secret
     phasenamemap = {
         '_notpublic': draft,
         'draft': draft, # follow secret's ancestors
         'secret': secret,
     }
     if phasename not in phasenamemap:
         raise error.ParseError('%r is not a valid phasename' % phasename)
 
     minimalphase = phasenamemap[phasename]
     getphase = repo._phasecache.phase
 
     def cutfunc(rev):
         return getphase(repo, rev) < minimalphase
 
     revs = dagop.revancestors(repo, s, cutfunc=cutfunc)
 
     if phasename == 'draft': # need to remove secret changesets
         revs = revs.filter(lambda r: getphase(repo, r) == draft)
     return subset & revs
 
 @predicate('public()', safe=True)
 def public(repo, subset, x):
     """Changeset in public phase."""
     # i18n: "public" is a keyword
     getargs(x, 0, 0, _("public takes no arguments"))
     return _phase(repo, subset, phases.public)
 
 @predicate('remote([id [,path]])', safe=False)
 def remote(repo, subset, x):
     """Local revision that corresponds to the given identifier in a
     remote repository, if present. Here, the '.' identifier is a
     synonym for the current local branch.
     """
 
     from . import hg # avoid start-up nasties
     # i18n: "remote" is a keyword
     l = getargs(x, 0, 2, _("remote takes zero, one, or two arguments"))
 
     q = '.'
     if len(l) > 0:
     # i18n: "remote" is a keyword
         q = getstring(l[0], _("remote requires a string id"))
     if q == '.':
         q = repo['.'].branch()
 
     dest = ''
     if len(l) > 1:
         # i18n: "remote" is a keyword
         dest = getstring(l[1], _("remote requires a repository path"))
     dest = repo.ui.expandpath(dest or 'default')
     dest, branches = hg.parseurl(dest)
     revs, checkout = hg.addbranchrevs(repo, repo, branches, [])
     if revs:
         revs = [repo.lookup(rev) for rev in revs]
     other = hg.peer(repo, {}, dest)
     n = other.lookup(q)
     if n in repo:
         r = repo[n].rev()
         if r in subset:
             return baseset([r])
     return baseset()
 
 @predicate('removes(pattern)', safe=True, weight=30)
 def removes(repo, subset, x):
     """Changesets which remove files matching pattern.
 
     The pattern without explicit kind like ``glob:`` is expected to be
     relative to the current directory and match against a file or a
     directory.
     """
     # i18n: "removes" is a keyword
     pat = getstring(x, _("removes requires a pattern"))
     return checkstatus(repo, subset, pat, 2)
 
 @predicate('rev(number)', safe=True)
 def rev(repo, subset, x):
     """Revision with the given numeric identifier.
     """
     # i18n: "rev" is a keyword
     l = getargs(x, 1, 1, _("rev requires one argument"))
     try:
         # i18n: "rev" is a keyword
         l = int(getstring(l[0], _("rev requires a number")))
     except (TypeError, ValueError):
         # i18n: "rev" is a keyword
         raise error.ParseError(_("rev expects a number"))
     if l not in repo.changelog and l not in (node.nullrev, node.wdirrev):
         return baseset()
     return subset & baseset([l])
 
 @predicate('matching(revision [, field])', safe=True)
 def matching(repo, subset, x):
     """Changesets in which a given set of fields match the set of fields in the
     selected revision or set.
 
     To match more than one field pass the list of fields to match separated
     by spaces (e.g. ``author description``).
 
     Valid fields are most regular revision fields and some special fields.
 
     Regular revision fields are ``description``, ``author``, ``branch``,
     ``date``, ``files``, ``phase``, ``parents``, ``substate``, ``user``
     and ``diff``.
     Note that ``author`` and ``user`` are synonyms. ``diff`` refers to the
     contents of the revision. Two revisions matching their ``diff`` will
     also match their ``files``.
 
     Special fields are ``summary`` and ``metadata``:
     ``summary`` matches the first line of the description.
     ``metadata`` is equivalent to matching ``description user date``
     (i.e. it matches the main metadata fields).
 
     ``metadata`` is the default field which is used when no fields are
     specified. You can match more than one field at a time.
     """
     # i18n: "matching" is a keyword
     l = getargs(x, 1, 2, _("matching takes 1 or 2 arguments"))
 
     revs = getset(repo, fullreposet(repo), l[0])
 
     fieldlist = ['metadata']
     if len(l) > 1:
             fieldlist = getstring(l[1],
                 # i18n: "matching" is a keyword
                 _("matching requires a string "
                 "as its second argument")).split()
 
     # Make sure that there are no repeated fields,
     # expand the 'special' 'metadata' field type
     # and check the 'files' whenever we check the 'diff'
     fields = []
     for field in fieldlist:
         if field == 'metadata':
             fields += ['user', 'description', 'date']
         elif field == 'diff':
             # a revision matching the diff must also match the files
             # since matching the diff is very costly, make sure to
             # also match the files first
             fields += ['files', 'diff']
         else:
             if field == 'author':
                 field = 'user'
             fields.append(field)
     fields = set(fields)
     if 'summary' in fields and 'description' in fields:
         # If a revision matches its description it also matches its summary
         fields.discard('summary')
 
     # We may want to match more than one field
     # Not all fields take the same amount of time to be matched
     # Sort the selected fields in order of increasing matching cost
     fieldorder = ['phase', 'parents', 'user', 'date', 'branch', 'summary',
         'files', 'description', 'substate', 'diff']
     def fieldkeyfunc(f):
         try:
             return fieldorder.index(f)
         except ValueError:
             # assume an unknown field is very costly
             return len(fieldorder)
     fields = list(fields)
     fields.sort(key=fieldkeyfunc)
 
     # Each field will be matched with its own "getfield" function
     # which will be added to the getfieldfuncs array of functions
     getfieldfuncs = []
     _funcs = {
         'user': lambda r: repo[r].user(),
         'branch': lambda r: repo[r].branch(),
         'date': lambda r: repo[r].date(),
         'description': lambda r: repo[r].description(),
         'files': lambda r: repo[r].files(),
         'parents': lambda r: repo[r].parents(),
         'phase': lambda r: repo[r].phase(),
         'substate': lambda r: repo[r].substate,
         'summary': lambda r: repo[r].description().splitlines()[0],
         'diff': lambda r: list(repo[r].diff(
             opts=diffutil.diffallopts(repo.ui, {'git': True}))),
     }
     for info in fields:
         getfield = _funcs.get(info, None)
         if getfield is None:
             raise error.ParseError(
                 # i18n: "matching" is a keyword
                 _("unexpected field name passed to matching: %s") % info)
         getfieldfuncs.append(getfield)
     # convert the getfield array of functions into a "getinfo" function
     # which returns an array of field values (or a single value if there
     # is only one field to match)
     getinfo = lambda r: [f(r) for f in getfieldfuncs]
 
     def matches(x):
         for rev in revs:
             target = getinfo(rev)
             match = True
             for n, f in enumerate(getfieldfuncs):
                 if target[n] != f(x):
                     match = False
             if match:
                 return True
         return False
 
     return subset.filter(matches, condrepr=('<matching%r %r>', fields, revs))
 
 @predicate('reverse(set)', safe=True, takeorder=True, weight=0)
 def reverse(repo, subset, x, order):
     """Reverse order of set.
     """
     l = getset(repo, subset, x, order)
     if order == defineorder:
         l.reverse()
     return l
 
 @predicate('roots(set)', safe=True)
 def roots(repo, subset, x):
     """Changesets in set with no parent changeset in set.
     """
     s = getset(repo, fullreposet(repo), x)
     parents = repo.changelog.parentrevs
     def filter(r):
         for p in parents(r):
             if 0 <= p and p in s:
                 return False
         return True
     return subset & s.filter(filter, condrepr='<roots>')
 
 _sortkeyfuncs = {
     'rev': lambda c: c.rev(),
     'branch': lambda c: c.branch(),
     'desc': lambda c: c.description(),
     'user': lambda c: c.user(),
     'author': lambda c: c.user(),
     'date': lambda c: c.date()[0],
 }
 
 def _getsortargs(x):
     """Parse sort options into (set, [(key, reverse)], opts)"""
     args = getargsdict(x, 'sort', 'set keys topo.firstbranch')
     if 'set' not in args:
         # i18n: "sort" is a keyword
         raise error.ParseError(_('sort requires one or two arguments'))
     keys = "rev"
     if 'keys' in args:
         # i18n: "sort" is a keyword
         keys = getstring(args['keys'], _("sort spec must be a string"))
 
     keyflags = []
     for k in keys.split():
         fk = k
         reverse = (k.startswith('-'))
         if reverse:
             k = k[1:]
         if k not in _sortkeyfuncs and k != 'topo':
             raise error.ParseError(
                 _("unknown sort key %r") % pycompat.bytestr(fk))
         keyflags.append((k, reverse))
 
     if len(keyflags) > 1 and any(k == 'topo' for k, reverse in keyflags):
         # i18n: "topo" is a keyword
         raise error.ParseError(_('topo sort order cannot be combined '
                                  'with other sort keys'))
 
     opts = {}
     if 'topo.firstbranch' in args:
         if any(k == 'topo' for k, reverse in keyflags):
             opts['topo.firstbranch'] = args['topo.firstbranch']
         else:
             # i18n: "topo" and "topo.firstbranch" are keywords
             raise error.ParseError(_('topo.firstbranch can only be used '
                                      'when using the topo sort key'))
 
     return args['set'], keyflags, opts
 
 @predicate('sort(set[, [-]key... [, ...]])', safe=True, takeorder=True,
            weight=10)
 def sort(repo, subset, x, order):
     """Sort set by keys. The default sort order is ascending, specify a key
     as ``-key`` to sort in descending order.
 
     The keys can be:
 
     - ``rev`` for the revision number,
     - ``branch`` for the branch name,
     - ``desc`` for the commit message (description),
     - ``user`` for user name (``author`` can be used as an alias),
     - ``date`` for the commit date
     - ``topo`` for a reverse topographical sort
 
     The ``topo`` sort order cannot be combined with other sort keys. This sort
     takes one optional argument, ``topo.firstbranch``, which takes a revset that
     specifies what topographical branches to prioritize in the sort.
 
     """
     s, keyflags, opts = _getsortargs(x)
     revs = getset(repo, subset, s, order)
 
     if not keyflags or order != defineorder:
         return revs
     if len(keyflags) == 1 and keyflags[0][0] == "rev":
         revs.sort(reverse=keyflags[0][1])
         return revs
     elif keyflags[0][0] == "topo":
         firstbranch = ()
         if 'topo.firstbranch' in opts:
             firstbranch = getset(repo, subset, opts['topo.firstbranch'])
         revs = baseset(dagop.toposort(revs, repo.changelog.parentrevs,
                                       firstbranch),
                        istopo=True)
         if keyflags[0][1]:
             revs.reverse()
         return revs
 
     # sort() is guaranteed to be stable
     ctxs = [repo[r] for r in revs]
     for k, reverse in reversed(keyflags):
         ctxs.sort(key=_sortkeyfuncs[k], reverse=reverse)
     return baseset([c.rev() for c in ctxs])
 
 @predicate('subrepo([pattern])')
 def subrepo(repo, subset, x):
     """Changesets that add, modify or remove the given subrepo.  If no subrepo
     pattern is named, any subrepo changes are returned.
     """
     # i18n: "subrepo" is a keyword
     args = getargs(x, 0, 1, _('subrepo takes at most one argument'))
     pat = None
     if len(args) != 0:
         pat = getstring(args[0], _("subrepo requires a pattern"))
 
     m = matchmod.exact(repo.root, repo.root, ['.hgsubstate'])
 
     def submatches(names):
         k, p, m = stringutil.stringmatcher(pat)
         for name in names:
             if m(name):
                 yield name
 
     def matches(x):
         c = repo[x]
         s = repo.status(c.p1().node(), c.node(), match=m)
 
         if pat is None:
             return s.added or s.modified or s.removed
 
         if s.added:
             return any(submatches(c.substate.keys()))
 
         if s.modified:
             subs = set(c.p1().substate.keys())
             subs.update(c.substate.keys())
 
             for path in submatches(subs):
                 if c.p1().substate.get(path) != c.substate.get(path):
                     return True
 
         if s.removed:
             return any(submatches(c.p1().substate.keys()))
 
         return False
 
     return subset.filter(matches, condrepr=('<subrepo %r>', pat))
 
 def _mapbynodefunc(repo, s, f):
     """(repo, smartset, [node] -> [node]) -> smartset
 
     Helper method to map a smartset to another smartset given a function only
     talking about nodes. Handles converting between rev numbers and nodes, and
     filtering.
     """
     cl = repo.unfiltered().changelog
     torev = cl.rev
     tonode = cl.node
     nodemap = cl.nodemap
     result = set(torev(n) for n in f(tonode(r) for r in s) if n in nodemap)
     return smartset.baseset(result - repo.changelog.filteredrevs)
 
 @predicate('successors(set)', safe=True)
 def successors(repo, subset, x):
     """All successors for set, including the given set themselves"""
     s = getset(repo, fullreposet(repo), x)
     f = lambda nodes: obsutil.allsuccessors(repo.obsstore, nodes)
     d = _mapbynodefunc(repo, s, f)
     return subset & d
 
 def _substringmatcher(pattern, casesensitive=True):
     kind, pattern, matcher = stringutil.stringmatcher(
         pattern, casesensitive=casesensitive)
     if kind == 'literal':
         if not casesensitive:
             pattern = encoding.lower(pattern)
             matcher = lambda s: pattern in encoding.lower(s)
         else:
             matcher = lambda s: pattern in s
     return kind, pattern, matcher
 
 @predicate('tag([name])', safe=True)
 def tag(repo, subset, x):
     """The specified tag by name, or all tagged revisions if no name is given.
 
     Pattern matching is supported for `name`. See
     :hg:`help revisions.patterns`.
     """
     # i18n: "tag" is a keyword
     args = getargs(x, 0, 1, _("tag takes one or no arguments"))
     cl = repo.changelog
     if args:
         pattern = getstring(args[0],
                             # i18n: "tag" is a keyword
                             _('the argument to tag must be a string'))
         kind, pattern, matcher = stringutil.stringmatcher(pattern)
         if kind == 'literal':
             # avoid resolving all tags
             tn = repo._tagscache.tags.get(pattern, None)
             if tn is None:
                 raise error.RepoLookupError(_("tag '%s' does not exist")
                                             % pattern)
             s = {repo[tn].rev()}
         else:
             s = {cl.rev(n) for t, n in repo.tagslist() if matcher(t)}
     else:
         s = {cl.rev(n) for t, n in repo.tagslist() if t != 'tip'}
     return subset & s
 
 @predicate('tagged', safe=True)
 def tagged(repo, subset, x):
     return tag(repo, subset, x)
 
 @predicate('orphan()', safe=True)
 def orphan(repo, subset, x):
     """Non-obsolete changesets with obsolete ancestors. (EXPERIMENTAL)
     """
     # i18n: "orphan" is a keyword
     getargs(x, 0, 0, _("orphan takes no arguments"))
     orphan = obsmod.getrevs(repo, 'orphan')
     return subset & orphan
 
 
 @predicate('user(string)', safe=True, weight=10)
 def user(repo, subset, x):
     """User name contains string. The match is case-insensitive.
 
     Pattern matching is supported for `string`. See
     :hg:`help revisions.patterns`.
     """
     return author(repo, subset, x)
 
 @predicate('wdir()', safe=True, weight=0)
 def wdir(repo, subset, x):
     """Working directory. (EXPERIMENTAL)"""
     # i18n: "wdir" is a keyword
     getargs(x, 0, 0, _("wdir takes no arguments"))
     if node.wdirrev in subset or isinstance(subset, fullreposet):
         return baseset([node.wdirrev])
     return baseset()
 
 def _orderedlist(repo, subset, x):
     s = getstring(x, "internal error")
     if not s:
         return baseset()
     # remove duplicates here. it's difficult for caller to deduplicate sets
     # because different symbols can point to the same rev.
     cl = repo.changelog
     ls = []
     seen = set()
     for t in s.split('\0'):
         try:
             # fast path for integer revision
             r = int(t)
             if ('%d' % r) != t or r not in cl:
                 raise ValueError
             revs = [r]
         except ValueError:
             revs = stringset(repo, subset, t, defineorder)
 
         for r in revs:
             if r in seen:
                 continue
             if (r in subset
                 or r == node.nullrev and isinstance(subset, fullreposet)):
                 ls.append(r)
             seen.add(r)
     return baseset(ls)
 
 # for internal use
 @predicate('_list', safe=True, takeorder=True)
 def _list(repo, subset, x, order):
     if order == followorder:
         # slow path to take the subset order
         return subset & _orderedlist(repo, fullreposet(repo), x)
     else:
         return _orderedlist(repo, subset, x)
 
 def _orderedintlist(repo, subset, x):
     s = getstring(x, "internal error")
     if not s:
         return baseset()
     ls = [int(r) for r in s.split('\0')]
     s = subset
     return baseset([r for r in ls if r in s])
 
 # for internal use
 @predicate('_intlist', safe=True, takeorder=True, weight=0)
 def _intlist(repo, subset, x, order):
     if order == followorder:
         # slow path to take the subset order
         return subset & _orderedintlist(repo, fullreposet(repo), x)
     else:
         return _orderedintlist(repo, subset, x)
 
 def _orderedhexlist(repo, subset, x):
     s = getstring(x, "internal error")
     if not s:
         return baseset()
     cl = repo.changelog
     ls = [cl.rev(node.bin(r)) for r in s.split('\0')]
     s = subset
     return baseset([r for r in ls if r in s])
 
 # for internal use
 @predicate('_hexlist', safe=True, takeorder=True)
 def _hexlist(repo, subset, x, order):
     if order == followorder:
         # slow path to take the subset order
         return subset & _orderedhexlist(repo, fullreposet(repo), x)
     else:
         return _orderedhexlist(repo, subset, x)
 
 methods = {
     "range": rangeset,
     "rangeall": rangeall,
     "rangepre": rangepre,
     "rangepost": rangepost,
     "dagrange": dagrange,
     "string": stringset,
     "symbol": stringset,
     "and": andset,
     "andsmally": andsmallyset,
     "or": orset,
     "not": notset,
     "difference": differenceset,
     "relation": relationset,
     "relsubscript": relsubscriptset,
     "subscript": subscriptset,
     "list": listset,
     "keyvalue": keyvaluepair,
     "func": func,
     "ancestor": ancestorspec,
     "parent": parentspec,
     "parentpost": parentpost,
 }
 
 def lookupfn(repo):
     return lambda symbol: scmutil.isrevsymbol(repo, symbol)
 
 def match(ui, spec, lookup=None):
     """Create a matcher for a single revision spec"""
     return matchany(ui, [spec], lookup=lookup)
 
 def matchany(ui, specs, lookup=None, localalias=None):
     """Create a matcher that will include any revisions matching one of the
     given specs
 
     If lookup function is not None, the parser will first attempt to handle
     old-style ranges, which may contain operator characters.
 
     If localalias is not None, it is a dict {name: definitionstring}. It takes
     precedence over [revsetalias] config section.
     """
     if not specs:
         def mfunc(repo, subset=None):
             return baseset()
         return mfunc
     if not all(specs):
         raise error.ParseError(_("empty query"))
     if len(specs) == 1:
         tree = revsetlang.parse(specs[0], lookup)
     else:
         tree = ('or',
                 ('list',) + tuple(revsetlang.parse(s, lookup) for s in specs))
 
     aliases = []
     warn = None
     if ui:
         aliases.extend(ui.configitems('revsetalias'))
         warn = ui.warn
     if localalias:
         aliases.extend(localalias.items())
     if aliases:
         tree = revsetlang.expandaliases(tree, aliases, warn=warn)
     tree = revsetlang.foldconcat(tree)
     tree = revsetlang.analyze(tree)
     tree = revsetlang.optimize(tree)
     return makematcher(tree)
 
 def makematcher(tree):
     """Create a matcher from an evaluatable tree"""
     def mfunc(repo, subset=None, order=None):
         if order is None:
             if subset is None:
                 order = defineorder  # 'x'
             else:
                 order = followorder  # 'subset & x'
         if subset is None:
             subset = fullreposet(repo)
         return getset(repo, subset, tree, order)
     return mfunc
 
 def loadpredicate(ui, extname, registrarobj):
     """Load revset predicates from specified registrarobj
     """
     for name, func in registrarobj._table.iteritems():
         symbols[name] = func
         if func._safe:
             safesymbols.add(name)
 
 # load built-in predicates explicitly to setup safesymbols
 loadpredicate(None, None, predicate)
 
 # tell hggettext to extract docstrings from these functions:
 i18nfunctions = symbols.values()

tests/test-fileset.t

@@ -1,743 +1,743 b''
   $ fileset() {
   >   hg debugfileset --all-files "$@"
   > }
 
   $ hg init repo
   $ cd repo
   $ echo a > a1
   $ echo a > a2
   $ echo b > b1
   $ echo b > b2
   $ hg ci -Am addfiles
   adding a1
   adding a2
   adding b1
   adding b2
 
 Test operators and basic patterns
 
   $ fileset -v a1
   (symbol 'a1')
   * matcher:
   <patternmatcher patterns='(?:a1$)'>
   a1
   $ fileset -v 'a*'
   (symbol 'a*')
   * matcher:
   <patternmatcher patterns='(?:a[^/]*$)'>
   a1
   a2
   $ fileset -v '"re:a\d"'
   (string 're:a\\d')
   * matcher:
   <patternmatcher patterns='(?:a\\d)'>
   a1
   a2
   $ fileset -v '!re:"a\d"'
   (not
     (kindpat
       (symbol 're')
       (string 'a\\d')))
   * matcher:
   <predicatenmatcher
     pred=<not
       <patternmatcher patterns='(?:a\\d)'>>>
   b1
   b2
   $ fileset -v 'path:a1 or glob:b?'
   (or
     (kindpat
       (symbol 'path')
       (symbol 'a1'))
     (kindpat
       (symbol 'glob')
       (symbol 'b?')))
   * matcher:
   <unionmatcher matchers=[
     <patternmatcher patterns='(?:a1(?:/|$))'>,
     <patternmatcher patterns='(?:b.$)'>]>
   a1
   b1
   b2
   $ fileset -v --no-show-matcher 'a1 or a2'
   (or
     (symbol 'a1')
     (symbol 'a2'))
   a1
   a2
   $ fileset 'a1 | a2'
   a1
   a2
   $ fileset 'a* and "*1"'
   a1
   $ fileset 'a* & "*1"'
   a1
   $ fileset 'not (r"a*")'
   b1
   b2
   $ fileset '! ("a*")'
   b1
   b2
   $ fileset 'a* - a1'
   a2
   $ fileset 'a_b'
   $ fileset '"\xy"'
   hg: parse error: invalid \x escape* (glob)
   [255]
 
 Test invalid syntax
 
   $ fileset -v '"added"()'
   (func
     (string 'added')
     None)
   hg: parse error: not a symbol
   [255]
   $ fileset -v '()()'
   (func
     (group
       None)
     None)
   hg: parse error: not a symbol
   [255]
   $ fileset -v -- '-x'
   (negate
     (symbol 'x'))
   hg: parse error: can't use negate operator in this context
   [255]
   $ fileset -v -- '-()'
   (negate
     (group
       None))
   hg: parse error: can't use negate operator in this context
   [255]
   $ fileset -p parsed 'a, b, c'
   * parsed:
   (list
     (symbol 'a')
     (symbol 'b')
     (symbol 'c'))
   hg: parse error: can't use a list in this context
-  (see hg help "filesets.x or y")
+  (see 'hg help "filesets.x or y"')
   [255]
 
   $ fileset '"path":.'
   hg: parse error: not a symbol
   [255]
   $ fileset 'path:foo bar'
   hg: parse error at 9: invalid token
   [255]
   $ fileset 'foo:bar:baz'
   hg: parse error: not a symbol
   [255]
   $ fileset 'foo:bar()'
   hg: parse error: pattern must be a string
   [255]
   $ fileset 'foo:bar'
   hg: parse error: invalid pattern kind: foo
   [255]
 
 Show parsed tree at stages:
 
   $ fileset -p unknown a
   abort: invalid stage name: unknown
   [255]
 
   $ fileset -p parsed 'path:a1 or glob:b?'
   * parsed:
   (or
     (kindpat
       (symbol 'path')
       (symbol 'a1'))
     (kindpat
       (symbol 'glob')
       (symbol 'b?')))
   a1
   b1
   b2
 
   $ fileset -p all -s 'a1 or a2 or (grep("b") & clean())'
   * parsed:
   (or
     (symbol 'a1')
     (symbol 'a2')
     (group
       (and
         (func
           (symbol 'grep')
           (string 'b'))
         (func
           (symbol 'clean')
           None))))
   * matcher:
   <unionmatcher matchers=[
     <patternmatcher patterns='(?:a1$)'>,
     <patternmatcher patterns='(?:a2$)'>,
     <intersectionmatcher
       m1=<predicatenmatcher pred=grep('b')>,
       m2=<predicatenmatcher pred=clean>>]>
   a1
   a2
   b1
   b2
 
 Test files status
 
   $ rm a1
   $ hg rm a2
   $ echo b >> b2
   $ hg cp b1 c1
   $ echo c > c2
   $ echo c > c3
   $ cat > .hgignore <<EOF
   > \.hgignore
   > 2$
   > EOF
   $ fileset 'modified()'
   b2
   $ fileset 'added()'
   c1
   $ fileset 'removed()'
   a2
   $ fileset 'deleted()'
   a1
   $ fileset 'missing()'
   a1
   $ fileset 'unknown()'
   c3
   $ fileset 'ignored()'
   .hgignore
   c2
   $ fileset 'hgignore()'
   .hgignore
   a2
   b2
   c2
   $ fileset 'clean()'
   b1
   $ fileset 'copied()'
   c1
 
 Test files status in different revisions
 
   $ hg status -m
   M b2
   $ fileset -r0 'revs("wdir()", modified())' --traceback
   b2
   $ hg status -a
   A c1
   $ fileset -r0 'revs("wdir()", added())'
   c1
   $ hg status --change 0 -a
   A a1
   A a2
   A b1
   A b2
   $ hg status -mru
   M b2
   R a2
   ? c3
   $ fileset -r0 'added() and revs("wdir()", modified() or removed() or unknown())'
   a2
   b2
   $ fileset -r0 'added() or revs("wdir()", added())'
   a1
   a2
   b1
   b2
   c1
 
 Test files properties
 
   >>> open('bin', 'wb').write(b'\0a') and None
   $ fileset 'binary()'
   bin
   $ fileset 'binary() and unknown()'
   bin
   $ echo '^bin$' >> .hgignore
   $ fileset 'binary() and ignored()'
   bin
   $ hg add bin
   $ fileset 'binary()'
   bin
 
   $ fileset 'grep("b{1}")'
   .hgignore
   b1
   b2
   c1
   $ fileset 'grep("missingparens(")'
   hg: parse error: invalid match pattern: (unbalanced parenthesis|missing \)).* (re)
   [255]
 
 #if execbit
   $ chmod +x b2
   $ fileset 'exec()'
   b2
 #endif
 
 #if symlink
   $ ln -s b2 b2link
   $ fileset 'symlink() and unknown()'
   b2link
   $ hg add b2link
 #endif
 
 #if no-windows
   $ echo foo > con.xml
   $ fileset 'not portable()'
   con.xml
   $ hg --config ui.portablefilenames=ignore add con.xml
 #endif
 
   >>> open('1k', 'wb').write(b' '*1024) and None
   >>> open('2k', 'wb').write(b' '*2048) and None
   $ hg add 1k 2k
   $ fileset 'size("bar")'
   hg: parse error: couldn't parse size: bar
   [255]
   $ fileset '(1k, 2k)'
   hg: parse error: can't use a list in this context
-  (see hg help "filesets.x or y")
+  (see 'hg help "filesets.x or y"')
   [255]
   $ fileset 'size(1k)'
   1k
   $ fileset '(1k or 2k) and size("< 2k")'
   1k
   $ fileset '(1k or 2k) and size("<=2k")'
   1k
   2k
   $ fileset '(1k or 2k) and size("> 1k")'
   2k
   $ fileset '(1k or 2k) and size(">=1K")'
   1k
   2k
   $ fileset '(1k or 2k) and size(".5KB - 1.5kB")'
   1k
   $ fileset 'size("1M")'
   $ fileset 'size("1 GB")'
 
 Test merge states
 
   $ hg ci -m manychanges
   $ hg file -r . 'set:copied() & modified()'
   [1]
   $ hg up -C 0
   * files updated, 0 files merged, * files removed, 0 files unresolved (glob)
   $ echo c >> b2
   $ hg ci -m diverging b2
   created new head
   $ fileset 'resolved()'
   $ fileset 'unresolved()'
   $ hg merge
   merging b2
   warning: conflicts while merging b2! (edit, then use 'hg resolve --mark')
   * files updated, 0 files merged, 1 files removed, 1 files unresolved (glob)
   use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
   [1]
   $ fileset 'resolved()'
   $ fileset 'unresolved()'
   b2
   $ echo e > b2
   $ hg resolve -m b2
   (no more unresolved files)
   $ fileset 'resolved()'
   b2
   $ fileset 'unresolved()'
   $ hg ci -m merge
 
 Test subrepo predicate
 
   $ hg init sub
   $ echo a > sub/suba
   $ hg -R sub add sub/suba
   $ hg -R sub ci -m sub
   $ echo 'sub = sub' > .hgsub
   $ hg init sub2
   $ echo b > sub2/b
   $ hg -R sub2 ci -Am sub2
   adding b
   $ echo 'sub2 = sub2' >> .hgsub
   $ fileset 'subrepo()'
   $ hg add .hgsub
   $ fileset 'subrepo()'
   sub
   sub2
   $ fileset 'subrepo("sub")'
   sub
   $ fileset 'subrepo("glob:*")'
   sub
   sub2
   $ hg ci -m subrepo
 
 Test that .hgsubstate is updated as appropriate during a conversion.  The
 saverev property is enough to alter the hashes of the subrepo.
 
   $ hg init ../converted
   $ hg --config extensions.convert= convert --config convert.hg.saverev=True  \
   >      sub ../converted/sub
   initializing destination ../converted/sub repository
   scanning source...
   sorting...
   converting...
   0 sub
   $ hg clone -U sub2 ../converted/sub2
   $ hg --config extensions.convert= convert --config convert.hg.saverev=True  \
   >      . ../converted
   scanning source...
   sorting...
   converting...
   4 addfiles
   3 manychanges
   2 diverging
   1 merge
   0 subrepo
   no ".hgsubstate" updates will be made for "sub2"
   $ hg up -q -R ../converted -r tip
   $ hg --cwd ../converted cat sub/suba sub2/b -r tip
   a
   b
   $ oldnode=`hg log -r tip -T "{node}\n"`
   $ newnode=`hg log -R ../converted -r tip -T "{node}\n"`
   $ [ "$oldnode" != "$newnode" ] || echo "nothing changed"
 
 Test with a revision
 
   $ hg log -G --template '{rev} {desc}\n'
   @  4 subrepo
   |
   o    3 merge
   |\
   | o  2 diverging
   | |
   o |  1 manychanges
   |/
   o  0 addfiles
   
   $ echo unknown > unknown
   $ fileset -r1 'modified()'
   b2
   $ fileset -r1 'added() and c1'
   c1
   $ fileset -r1 'removed()'
   a2
   $ fileset -r1 'deleted()'
   $ fileset -r1 'unknown()'
   $ fileset -r1 'ignored()'
   $ fileset -r1 'hgignore()'
   .hgignore
   a2
   b2
   bin
   c2
   sub2
   $ fileset -r1 'binary()'
   bin
   $ fileset -r1 'size(1k)'
   1k
   $ fileset -r3 'resolved()'
   $ fileset -r3 'unresolved()'
 
 #if execbit
   $ fileset -r1 'exec()'
   b2
 #endif
 
 #if symlink
   $ fileset -r1 'symlink()'
   b2link
 #endif
 
 #if no-windows
   $ fileset -r1 'not portable()'
   con.xml
   $ hg forget 'con.xml'
 #endif
 
   $ fileset -r4 'subrepo("re:su.*")'
   sub
   sub2
   $ fileset -r4 'subrepo(re:su.*)'
   sub
   sub2
   $ fileset -r4 'subrepo("sub")'
   sub
   $ fileset -r4 'b2 or c1'
   b2
   c1
 
   >>> open('dos', 'wb').write(b"dos\r\n") and None
   >>> open('mixed', 'wb').write(b"dos\r\nunix\n") and None
   >>> open('mac', 'wb').write(b"mac\r") and None
   $ hg add dos mixed mac
 
 (remove a1, to examine safety of 'eol' on removed files)
   $ rm a1
 
   $ fileset 'eol(dos)'
   dos
   mixed
   $ fileset 'eol(unix)'
   .hgignore
   .hgsub
   .hgsubstate
   b1
   b2
   b2.orig
   c1
   c2
   c3
   con.xml (no-windows !)
   mixed
   unknown
   $ fileset 'eol(mac)'
   mac
 
 Test safety of 'encoding' on removed files
 
   $ fileset 'encoding("ascii")'
   .hgignore
   .hgsub
   .hgsubstate
   1k
   2k
   b1
   b2
   b2.orig
   b2link (symlink !)
   bin
   c1
   c2
   c3
   con.xml (no-windows !)
   dos
   mac
   mixed
   unknown
 
 Test 'revs(...)'
 ================
 
 small reminder of the repository state
 
   $ hg log -G
   @  changeset:   4:* (glob)
   |  tag:         tip
   |  user:        test
   |  date:        Thu Jan 01 00:00:00 1970 +0000
   |  summary:     subrepo
   |
   o    changeset:   3:* (glob)
   |\   parent:      2:55b05bdebf36
   | |  parent:      1:* (glob)
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  summary:     merge
   | |
   | o  changeset:   2:55b05bdebf36
   | |  parent:      0:8a9576c51c1f
   | |  user:        test
   | |  date:        Thu Jan 01 00:00:00 1970 +0000
   | |  summary:     diverging
   | |
   o |  changeset:   1:* (glob)
   |/   user:        test
   |    date:        Thu Jan 01 00:00:00 1970 +0000
   |    summary:     manychanges
   |
   o  changeset:   0:8a9576c51c1f
      user:        test
      date:        Thu Jan 01 00:00:00 1970 +0000
      summary:     addfiles
   
   $ hg status --change 0
   A a1
   A a2
   A b1
   A b2
   $ hg status --change 1
   M b2
   A 1k
   A 2k
   A b2link (no-windows !)
   A bin
   A c1
   A con.xml (no-windows !)
   R a2
   $ hg status --change 2
   M b2
   $ hg status --change 3
   M b2
   A 1k
   A 2k
   A b2link (no-windows !)
   A bin
   A c1
   A con.xml (no-windows !)
   R a2
   $ hg status --change 4
   A .hgsub
   A .hgsubstate
   $ hg status
   A dos
   A mac
   A mixed
   R con.xml (no-windows !)
   ! a1
   ? b2.orig
   ? c3
   ? unknown
 
 Test files at -r0 should be filtered by files at wdir
 -----------------------------------------------------
 
   $ fileset -r0 'tracked() and revs("wdir()", tracked())'
   a1
   b1
   b2
 
 Test that "revs()" work at all
 ------------------------------
 
   $ fileset "revs('2', modified())"
   b2
 
 Test that "revs()" work for file missing in the working copy/current context
 ----------------------------------------------------------------------------
 
 (a2 not in working copy)
 
   $ fileset "revs('0', added())"
   a1
   a2
   b1
   b2
 
 (none of the file exist in "0")
 
   $ fileset -r 0 "revs('4', added())"
   .hgsub
   .hgsubstate
 
 Call with empty revset
 --------------------------
 
   $ fileset "revs('2-2', modified())"
 
 Call with revset matching multiple revs
 ---------------------------------------
 
   $ fileset "revs('0+4', added())"
   .hgsub
   .hgsubstate
   a1
   a2
   b1
   b2
 
 overlapping set
 
   $ fileset "revs('1+2', modified())"
   b2
 
 test 'status(...)'
 =================
 
 Simple case
 -----------
 
   $ fileset "status(3, 4, added())"
   .hgsub
   .hgsubstate
 
 use rev to restrict matched file
 -----------------------------------------
 
   $ hg status --removed --rev 0 --rev 1
   R a2
   $ fileset "status(0, 1, removed())"
   a2
   $ fileset "tracked() and status(0, 1, removed())"
   $ fileset -r 4 "status(0, 1, removed())"
   a2
   $ fileset -r 4 "tracked() and status(0, 1, removed())"
   $ fileset "revs('4', tracked() and status(0, 1, removed()))"
   $ fileset "revs('0', tracked() and status(0, 1, removed()))"
   a2
 
 check wdir()
 ------------
 
   $ hg status --removed  --rev 4
   R con.xml (no-windows !)
   $ fileset "status(4, 'wdir()', removed())"
   con.xml (no-windows !)
 
   $ hg status --removed --rev 2
   R a2
   $ fileset "status('2', 'wdir()', removed())"
   a2
 
 test backward status
 --------------------
 
   $ hg status --removed --rev 0 --rev 4
   R a2
   $ hg status --added --rev 4 --rev 0
   A a2
   $ fileset "status(4, 0, added())"
   a2
 
 test cross branch status
 ------------------------
 
   $ hg status --added --rev 1 --rev 2
   A a2
   $ fileset "status(1, 2, added())"
   a2
 
 test with multi revs revset
 ---------------------------
   $ hg status --added --rev 0:1 --rev 3:4
   A .hgsub
   A .hgsubstate
   A 1k
   A 2k
   A b2link (no-windows !)
   A bin
   A c1
   A con.xml (no-windows !)
   $ fileset "status('0:1', '3:4', added())"
   .hgsub
   .hgsubstate
   1k
   2k
   b2link (no-windows !)
   bin
   c1
   con.xml (no-windows !)
 
 tests with empty value
 ----------------------
 
 Fully empty revset
 
   $ fileset "status('', '4', added())"
   hg: parse error: first argument to status must be a revision
   [255]
   $ fileset "status('2', '', added())"
   hg: parse error: second argument to status must be a revision
   [255]
 
 Empty revset will error at the revset layer
 
   $ fileset "status(' ', '4', added())"
   hg: parse error at 1: not a prefix: end
   ( 
     ^ here)
   [255]
   $ fileset "status('2', ' ', added())"
   hg: parse error at 1: not a prefix: end
   ( 
     ^ here)
   [255]

tests/test-revset2.t

@@ -1,1854 +1,1854 b''
   $ HGENCODING=utf-8
   $ export HGENCODING
   $ cat >> $HGRCPATH << EOF
   > [extensions]
   > drawdag=$TESTDIR/drawdag.py
   > EOF
 
   $ try() {
   >   hg debugrevspec --debug "$@"
   > }
 
   $ log() {
   >   hg log --template '{rev}\n' -r "$1"
   > }
 
   $ hg init repo
   $ cd repo
 
   $ echo a > a
   $ hg branch a
   marked working directory as branch a
   (branches are permanent and global, did you want a bookmark?)
   $ hg ci -Aqm0
 
   $ echo b > b
   $ hg branch b
   marked working directory as branch b
   $ hg ci -Aqm1
 
   $ rm a
   $ hg branch a-b-c-
   marked working directory as branch a-b-c-
   $ hg ci -Aqm2 -u Bob
 
   $ hg log -r "extra('branch', 'a-b-c-')" --template '{rev}\n'
   2
   $ hg log -r "extra('branch')" --template '{rev}\n'
   0
   1
   2
   $ hg log -r "extra('branch', 're:a')" --template '{rev} {branch}\n'
   0 a
   2 a-b-c-
 
   $ hg co 1
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg branch +a+b+c+
   marked working directory as branch +a+b+c+
   $ hg ci -Aqm3
 
   $ hg co 2  # interleave
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ echo bb > b
   $ hg branch -- -a-b-c-
   marked working directory as branch -a-b-c-
   $ hg ci -Aqm4 -d "May 12 2005"
 
   $ hg co 3
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg branch !a/b/c/
   marked working directory as branch !a/b/c/
   $ hg ci -Aqm"5 bug"
 
   $ hg merge 4
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg branch _a_b_c_
   marked working directory as branch _a_b_c_
   $ hg ci -Aqm"6 issue619"
 
   $ hg branch .a.b.c.
   marked working directory as branch .a.b.c.
   $ hg ci -Aqm7
 
   $ hg branch all
   marked working directory as branch all
 
   $ hg co 4
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg branch é
   marked working directory as branch \xc3\xa9 (esc)
   $ hg ci -Aqm9
 
   $ hg tag -r6 1.0
   $ hg bookmark -r6 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 
   $ hg clone --quiet -U -r 7 . ../remote1
   $ hg clone --quiet -U -r 8 . ../remote2
   $ echo "[paths]" >> .hg/hgrc
   $ echo "default = ../remote1" >> .hg/hgrc
 
 test subtracting something from an addset
 
   $ log '(outgoing() or removes(a)) - removes(a)'
   8
   9
 
 test intersecting something with an addset
 
   $ log 'parents(outgoing() or removes(a))'
   1
   4
   5
   8
 
 test that `or` operation combines elements in the right order:
 
   $ log '3:4 or 2:5'
   3
   4
   2
   5
   $ log '3:4 or 5:2'
   3
   4
   5
   2
   $ log 'sort(3:4 or 2:5)'
   2
   3
   4
   5
   $ log 'sort(3:4 or 5:2)'
   2
   3
   4
   5
 
 test that more than one `-r`s are combined in the right order and deduplicated:
 
   $ hg log -T '{rev}\n' -r 3 -r 3 -r 4 -r 5:2 -r 'ancestors(4)'
   3
   4
   5
   2
   0
   1
 
 test that `or` operation skips duplicated revisions from right-hand side
 
   $ try 'reverse(1::5) or ancestors(4)'
   (or
     (list
       (func
         (symbol 'reverse')
         (dagrange
           (symbol '1')
           (symbol '5')))
       (func
         (symbol 'ancestors')
         (symbol '4'))))
   * set:
   <addset
     <baseset- [1, 3, 5]>,
     <generatorsetdesc+>>
   5
   3
   1
   0
   2
   4
   $ try 'sort(ancestors(4) or reverse(1::5))'
   (func
     (symbol 'sort')
     (or
       (list
         (func
           (symbol 'ancestors')
           (symbol '4'))
         (func
           (symbol 'reverse')
           (dagrange
             (symbol '1')
             (symbol '5'))))))
   * set:
   <addset+
     <generatorsetdesc+>,
     <baseset- [1, 3, 5]>>
   0
   1
   2
   3
   4
   5
 
 test optimization of trivial `or` operation
 
   $ try --optimize '0|(1)|"2"|-2|tip|null'
   (or
     (list
       (symbol '0')
       (group
         (symbol '1'))
       (string '2')
       (negate
         (symbol '2'))
       (symbol 'tip')
       (symbol 'null')))
   * optimized:
   (func
     (symbol '_list')
     (string '0\x001\x002\x00-2\x00tip\x00null'))
   * set:
   <baseset [0, 1, 2, 8, 9, -1]>
   0
   1
   2
   8
   9
   -1
 
   $ try --optimize '0|1|2:3'
   (or
     (list
       (symbol '0')
       (symbol '1')
       (range
         (symbol '2')
         (symbol '3'))))
   * optimized:
   (or
     (list
       (func
         (symbol '_list')
         (string '0\x001'))
       (range
         (symbol '2')
         (symbol '3'))))
   * set:
   <addset
     <baseset [0, 1]>,
     <spanset+ 2:4>>
   0
   1
   2
   3
 
   $ try --optimize '0:1|2|3:4|5|6'
   (or
     (list
       (range
         (symbol '0')
         (symbol '1'))
       (symbol '2')
       (range
         (symbol '3')
         (symbol '4'))
       (symbol '5')
       (symbol '6')))
   * optimized:
   (or
     (list
       (range
         (symbol '0')
         (symbol '1'))
       (symbol '2')
       (range
         (symbol '3')
         (symbol '4'))
       (func
         (symbol '_list')
         (string '5\x006'))))
   * set:
   <addset
     <addset
       <spanset+ 0:2>,
       <baseset [2]>>,
     <addset
       <spanset+ 3:5>,
       <baseset [5, 6]>>>
   0
   1
   2
   3
   4
   5
   6
 
 unoptimized `or` looks like this
 
   $ try --no-optimized -p analyzed '0|1|2|3|4'
   * analyzed:
   (or
     (list
       (symbol '0')
       (symbol '1')
       (symbol '2')
       (symbol '3')
       (symbol '4')))
   * set:
   <addset
     <addset
       <baseset [0]>,
       <baseset [1]>>,
     <addset
       <baseset [2]>,
       <addset
         <baseset [3]>,
         <baseset [4]>>>>
   0
   1
   2
   3
   4
 
 test that `_list` should be narrowed by provided `subset`
 
   $ log '0:2 and (null|1|2|3)'
   1
   2
 
 test that `_list` should remove duplicates
 
   $ log '0|1|2|1|2|-1|tip'
   0
   1
   2
   9
 
 test unknown revision in `_list`
 
   $ log '0|unknown'
   abort: unknown revision 'unknown'!
   [255]
 
 test integer range in `_list`
 
   $ log '-1|-10'
   9
   0
 
   $ log '-10|-11'
   abort: unknown revision '-11'!
   [255]
 
   $ log '9|10'
   abort: unknown revision '10'!
   [255]
 
 test '0000' != '0' in `_list`
 
   $ log '0|0000'
   0
   -1
 
 test ',' in `_list`
   $ log '0,1'
   hg: parse error: can't use a list in this context
-  (see hg help "revsets.x or y")
+  (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")
+  (see 'hg help "revsets.x or y"')
   [255]
 
 test that chained `or` operations make balanced addsets
 
   $ try '0:1|1:2|2:3|3:4|4:5'
   (or
     (list
       (range
         (symbol '0')
         (symbol '1'))
       (range
         (symbol '1')
         (symbol '2'))
       (range
         (symbol '2')
         (symbol '3'))
       (range
         (symbol '3')
         (symbol '4'))
       (range
         (symbol '4')
         (symbol '5'))))
   * set:
   <addset
     <addset
       <spanset+ 0:2>,
       <spanset+ 1:3>>,
     <addset
       <spanset+ 2:4>,
       <addset
         <spanset+ 3:5>,
         <spanset+ 4:6>>>>
   0
   1
   2
   3
   4
   5
 
 no crash by empty group "()" while optimizing `or` operations
 
   $ try --optimize '0|()'
   (or
     (list
       (symbol '0')
       (group
         None)))
   * optimized:
   (or
     (list
       (symbol '0')
       None))
   hg: parse error: missing argument
   [255]
 
 test that chained `or` operations never eat up stack (issue4624)
 (uses `0:1` instead of `0` to avoid future optimization of trivial revisions)
 
   $ hg log -T '{rev}\n' -r `$PYTHON -c "print '+'.join(['0:1'] * 500)"`
   0
   1
 
 test that repeated `-r` options never eat up stack (issue4565)
 (uses `-r 0::1` to avoid possible optimization at old-style parser)
 
   $ hg log -T '{rev}\n' `$PYTHON -c "for i in range(500): print '-r 0::1 ',"`
   0
   1
 
 check that conversion to only works
   $ try --optimize '::3 - ::1'
   (minus
     (dagrangepre
       (symbol '3'))
     (dagrangepre
       (symbol '1')))
   * optimized:
   (func
     (symbol 'only')
     (list
       (symbol '3')
       (symbol '1')))
   * set:
   <baseset+ [3]>
   3
   $ try --optimize 'ancestors(1) - ancestors(3)'
   (minus
     (func
       (symbol 'ancestors')
       (symbol '1'))
     (func
       (symbol 'ancestors')
       (symbol '3')))
   * optimized:
   (func
     (symbol 'only')
     (list
       (symbol '1')
       (symbol '3')))
   * set:
   <baseset+ []>
   $ try --optimize 'not ::2 and ::6'
   (and
     (not
       (dagrangepre
         (symbol '2')))
     (dagrangepre
       (symbol '6')))
   * optimized:
   (func
     (symbol 'only')
     (list
       (symbol '6')
       (symbol '2')))
   * set:
   <baseset+ [3, 4, 5, 6]>
   3
   4
   5
   6
   $ try --optimize 'ancestors(6) and not ancestors(4)'
   (and
     (func
       (symbol 'ancestors')
       (symbol '6'))
     (not
       (func
         (symbol 'ancestors')
         (symbol '4'))))
   * optimized:
   (func
     (symbol 'only')
     (list
       (symbol '6')
       (symbol '4')))
   * set:
   <baseset+ [3, 5, 6]>
   3
   5
   6
 
 no crash by empty group "()" while optimizing to "only()"
 
   $ try --optimize '::1 and ()'
   (and
     (dagrangepre
       (symbol '1'))
     (group
       None))
   * optimized:
   (andsmally
     (func
       (symbol 'ancestors')
       (symbol '1'))
     None)
   hg: parse error: missing argument
   [255]
 
 optimization to only() works only if ancestors() takes only one argument
 
   $ hg debugrevspec -p optimized 'ancestors(6) - ancestors(4, 1)'
   * optimized:
   (difference
     (func
       (symbol 'ancestors')
       (symbol '6'))
     (func
       (symbol 'ancestors')
       (list
         (symbol '4')
         (symbol '1'))))
   0
   1
   3
   5
   6
   $ hg debugrevspec -p optimized 'ancestors(6, 1) - ancestors(4)'
   * optimized:
   (difference
     (func
       (symbol 'ancestors')
       (list
         (symbol '6')
         (symbol '1')))
     (func
       (symbol 'ancestors')
       (symbol '4')))
   5
   6
 
 optimization disabled if keyword arguments passed (because we're too lazy
 to support it)
 
   $ hg debugrevspec -p optimized 'ancestors(set=6) - ancestors(set=4)'
   * optimized:
   (difference
     (func
       (symbol 'ancestors')
       (keyvalue
         (symbol 'set')
         (symbol '6')))
     (func
       (symbol 'ancestors')
       (keyvalue
         (symbol 'set')
         (symbol '4'))))
   3
   5
   6
 
 invalid function call should not be optimized to only()
 
   $ log '"ancestors"(6) and not ancestors(4)'
   hg: parse error: not a symbol
   [255]
 
   $ log 'ancestors(6) and not "ancestors"(4)'
   hg: parse error: not a symbol
   [255]
 
 test empty string
 
   $ log ''
   hg: parse error: empty query
   [255]
   $ log 'parents("")'
   hg: parse error: empty string is not a valid revision
   [255]
 
 test empty revset
   $ hg log 'none()'
 
 we can use patterns when searching for tags
 
   $ log 'tag("1..*")'
   abort: tag '1..*' does not exist!
   [255]
   $ log 'tag("re:1..*")'
   6
   $ log 'tag("re:[0-9].[0-9]")'
   6
   $ log 'tag("literal:1.0")'
   6
   $ log 'tag("re:0..*")'
 
   $ log 'tag(unknown)'
   abort: tag 'unknown' does not exist!
   [255]
   $ log 'tag("re:unknown")'
   $ log 'present(tag("unknown"))'
   $ log 'present(tag("re:unknown"))'
   $ log 'branch(unknown)'
   abort: unknown revision 'unknown'!
   [255]
   $ log 'branch("literal:unknown")'
   abort: branch 'unknown' does not exist!
   [255]
   $ log 'branch("re:unknown")'
   $ log 'present(branch("unknown"))'
   $ log 'present(branch("re:unknown"))'
   $ log 'user(bob)'
   2
 
   $ log '4::8'
   4
   8
   $ log '4:8'
   4
   5
   6
   7
   8
 
   $ log 'sort(!merge() & (modifies(b) | user(bob) | keyword(bug) | keyword(issue) & 1::9), "-date")'
   4
   2
   5
 
   $ log 'not 0 and 0:2'
   1
   2
   $ log 'not 1 and 0:2'
   0
   2
   $ log 'not 2 and 0:2'
   0
   1
   $ log '(1 and 2)::'
   $ log '(1 and 2):'
   $ log '(1 and 2):3'
   $ log 'sort(head(), -rev)'
   9
   7
   6
   5
   4
   3
   2
   1
   0
   $ log '4::8 - 8'
   4
 
 matching() should preserve the order of the input set:
 
   $ log '(2 or 3 or 1) and matching(1 or 2 or 3)'
   2
   3
   1
 
   $ log 'named("unknown")'
   abort: namespace 'unknown' does not exist!
   [255]
   $ log 'named("re:unknown")'
   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
   (1 OR 2
      ^ here)
   [255]
 
 or operator should preserve ordering:
   $ log 'reverse(2::4) or tip'
   4
   2
   9
 
 parentrevspec
 
   $ log 'merge()^0'
   6
   $ log 'merge()^'
   5
   $ log 'merge()^1'
   5
   $ log 'merge()^2'
   4
   $ log '(not merge())^2'
   $ log 'merge()^^'
   3
   $ log 'merge()^1^'
   3
   $ log 'merge()^^^'
   1
 
   $ hg debugrevspec -s '(merge() | 0)~-1'
   * set:
   <baseset+ [1, 7]>
   1
   7
   $ log 'merge()~-1'
   7
   $ log 'tip~-1'
   $ log '(tip | merge())~-1'
   7
   $ log 'merge()~0'
   6
   $ log 'merge()~1'
   5
   $ log 'merge()~2'
   3
   $ log 'merge()~2^1'
   1
   $ log 'merge()~3'
   1
 
   $ log '(-3:tip)^'
   4
   6
   8
 
   $ log 'tip^foo'
   hg: parse error: ^ expects a number 0, 1, or 2
   [255]
 
   $ log 'branchpoint()~-1'
   abort: revision in set has more than one child!
   [255]
 
 Bogus function gets suggestions
   $ log 'add()'
   hg: parse error: unknown identifier: add
   (did you mean adds?)
   [255]
   $ log 'added()'
   hg: parse error: unknown identifier: added
   (did you mean adds?)
   [255]
   $ log 'remo()'
   hg: parse error: unknown identifier: remo
   (did you mean one of remote, removes?)
   [255]
   $ log 'babar()'
   hg: parse error: unknown identifier: babar
   [255]
 
 Bogus function with a similar internal name doesn't suggest the internal name
   $ log 'matches()'
   hg: parse error: unknown identifier: matches
   (did you mean matching?)
   [255]
 
 Undocumented functions aren't suggested as similar either
   $ log 'tagged2()'
   hg: parse error: unknown identifier: tagged2
   [255]
 
 multiple revspecs
 
   $ hg log -r 'tip~1:tip' -r 'tip~2:tip~1' --template '{rev}\n'
   8
   9
   4
   5
   6
   7
 
 test usage in revpair (with "+")
 
 (real pair)
 
   $ hg diff -r 'tip^^' -r 'tip'
   diff -r 2326846efdab -r 24286f4ae135 .hgtags
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/.hgtags	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +e0cc66ef77e8b6f711815af4e001a6594fde3ba5 1.0
   $ hg diff -r 'tip^^::tip'
   diff -r 2326846efdab -r 24286f4ae135 .hgtags
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/.hgtags	Thu Jan 01 00:00:00 1970 +0000
   @@ -0,0 +1,1 @@
   +e0cc66ef77e8b6f711815af4e001a6594fde3ba5 1.0
 
 (single rev)
 
   $ hg diff -r 'tip^' -r 'tip^'
   $ hg diff -r 'tip^:tip^'
 
 (single rev that does not looks like a range)
 
   $ hg diff -r 'tip^::tip^ or tip^'
   diff -r d5d0dcbdc4d9 .hgtags
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/.hgtags	* (glob)
   @@ -0,0 +1,1 @@
   +e0cc66ef77e8b6f711815af4e001a6594fde3ba5 1.0
   $ hg diff -r 'tip^ or tip^'
   diff -r d5d0dcbdc4d9 .hgtags
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/.hgtags	* (glob)
   @@ -0,0 +1,1 @@
   +e0cc66ef77e8b6f711815af4e001a6594fde3ba5 1.0
 
 (no rev)
 
   $ hg diff -r 'author("babar") or author("celeste")'
   abort: empty revision range
   [255]
 
 aliases:
 
   $ echo '[revsetalias]' >> .hg/hgrc
   $ echo 'm = merge()' >> .hg/hgrc
 (revset aliases can override builtin revsets)
   $ echo 'p2($1) = p1($1)' >> .hg/hgrc
   $ echo 'sincem = descendants(m)' >> .hg/hgrc
   $ echo 'd($1) = reverse(sort($1, date))' >> .hg/hgrc
   $ echo 'rs(ARG1, ARG2) = reverse(sort(ARG1, ARG2))' >> .hg/hgrc
   $ echo 'rs4(ARG1, ARGA, ARGB, ARG2) = reverse(sort(ARG1, ARG2))' >> .hg/hgrc
 
   $ try m
   (symbol 'm')
   * expanded:
   (func
     (symbol 'merge')
     None)
   * set:
   <filteredset
     <fullreposet+ 0:10>,
     <merge>>
   6
 
   $ HGPLAIN=1
   $ export HGPLAIN
   $ try m
   (symbol 'm')
   abort: unknown revision 'm'!
   [255]
 
   $ HGPLAINEXCEPT=revsetalias
   $ export HGPLAINEXCEPT
   $ try m
   (symbol 'm')
   * expanded:
   (func
     (symbol 'merge')
     None)
   * set:
   <filteredset
     <fullreposet+ 0:10>,
     <merge>>
   6
 
   $ unset HGPLAIN
   $ unset HGPLAINEXCEPT
 
   $ try 'p2(.)'
   (func
     (symbol 'p2')
     (symbol '.'))
   * expanded:
   (func
     (symbol 'p1')
     (symbol '.'))
   * set:
   <baseset+ [8]>
   8
 
   $ HGPLAIN=1
   $ export HGPLAIN
   $ try 'p2(.)'
   (func
     (symbol 'p2')
     (symbol '.'))
   * set:
   <baseset+ []>
 
   $ HGPLAINEXCEPT=revsetalias
   $ export HGPLAINEXCEPT
   $ try 'p2(.)'
   (func
     (symbol 'p2')
     (symbol '.'))
   * expanded:
   (func
     (symbol 'p1')
     (symbol '.'))
   * set:
   <baseset+ [8]>
   8
 
   $ unset HGPLAIN
   $ unset HGPLAINEXCEPT
 
 test alias recursion
 
   $ try sincem
   (symbol 'sincem')
   * expanded:
   (func
     (symbol 'descendants')
     (func
       (symbol 'merge')
       None))
   * set:
   <generatorsetasc+>
   6
   7
 
 test infinite recursion
 
   $ echo 'recurse1 = recurse2' >> .hg/hgrc
   $ echo 'recurse2 = recurse1' >> .hg/hgrc
   $ try recurse1
   (symbol 'recurse1')
   hg: parse error: infinite expansion of revset alias "recurse1" detected
   [255]
 
   $ echo 'level1($1, $2) = $1 or $2' >> .hg/hgrc
   $ echo 'level2($1, $2) = level1($2, $1)' >> .hg/hgrc
   $ try "level2(level1(1, 2), 3)"
   (func
     (symbol 'level2')
     (list
       (func
         (symbol 'level1')
         (list
           (symbol '1')
           (symbol '2')))
       (symbol '3')))
   * expanded:
   (or
     (list
       (symbol '3')
       (or
         (list
           (symbol '1')
           (symbol '2')))))
   * set:
   <addset
     <baseset [3]>,
     <baseset [1, 2]>>
   3
   1
   2
 
 test nesting and variable passing
 
   $ echo 'nested($1) = nested2($1)' >> .hg/hgrc
   $ echo 'nested2($1) = nested3($1)' >> .hg/hgrc
   $ echo 'nested3($1) = max($1)' >> .hg/hgrc
   $ try 'nested(2:5)'
   (func
     (symbol 'nested')
     (range
       (symbol '2')
       (symbol '5')))
   * expanded:
   (func
     (symbol 'max')
     (range
       (symbol '2')
       (symbol '5')))
   * set:
   <baseset
     <max
       <fullreposet+ 0:10>,
       <spanset+ 2:6>>>
   5
 
 test chained `or` operations are flattened at parsing phase
 
   $ echo 'chainedorops($1, $2, $3) = $1|$2|$3' >> .hg/hgrc
   $ try 'chainedorops(0:1, 1:2, 2:3)'
   (func
     (symbol 'chainedorops')
     (list
       (range
         (symbol '0')
         (symbol '1'))
       (range
         (symbol '1')
         (symbol '2'))
       (range
         (symbol '2')
         (symbol '3'))))
   * expanded:
   (or
     (list
       (range
         (symbol '0')
         (symbol '1'))
       (range
         (symbol '1')
         (symbol '2'))
       (range
         (symbol '2')
         (symbol '3'))))
   * set:
   <addset
     <spanset+ 0:2>,
     <addset
       <spanset+ 1:3>,
       <spanset+ 2:4>>>
   0
   1
   2
   3
 
 test variable isolation, variable placeholders are rewritten as string
 then parsed and matched again as string. Check they do not leak too
 far away.
 
   $ echo 'injectparamasstring = max("$1")' >> .hg/hgrc
   $ echo 'callinjection($1) = descendants(injectparamasstring)' >> .hg/hgrc
   $ try 'callinjection(2:5)'
   (func
     (symbol 'callinjection')
     (range
       (symbol '2')
       (symbol '5')))
   * expanded:
   (func
     (symbol 'descendants')
     (func
       (symbol 'max')
       (string '$1')))
   abort: unknown revision '$1'!
   [255]
 
 test scope of alias expansion: 'universe' is expanded prior to 'shadowall(0)',
 but 'all()' should never be substituted to '0()'.
 
   $ echo 'universe = all()' >> .hg/hgrc
   $ echo 'shadowall(all) = all and universe' >> .hg/hgrc
   $ try 'shadowall(0)'
   (func
     (symbol 'shadowall')
     (symbol '0'))
   * expanded:
   (and
     (symbol '0')
     (func
       (symbol 'all')
       None))
   * set:
   <filteredset
     <baseset [0]>,
     <spanset+ 0:10>>
   0
 
 test unknown reference:
 
   $ try "unknownref(0)" --config 'revsetalias.unknownref($1)=$1:$2'
   (func
     (symbol 'unknownref')
     (symbol '0'))
   abort: bad definition of revset alias "unknownref": invalid symbol '$2'
   [255]
 
   $ hg debugrevspec --debug --config revsetalias.anotherbadone='branch(' "tip"
   (symbol 'tip')
   warning: bad definition of revset alias "anotherbadone": at 7: not a prefix: end
   * set:
   <baseset [9]>
   9
 
   $ try 'tip'
   (symbol 'tip')
   * set:
   <baseset [9]>
   9
 
   $ hg debugrevspec --debug --config revsetalias.'bad name'='tip' "tip"
   (symbol 'tip')
   warning: bad declaration of revset alias "bad name": at 4: invalid token
   * set:
   <baseset [9]>
   9
   $ echo 'strictreplacing($1, $10) = $10 or desc("$1")' >> .hg/hgrc
   $ try 'strictreplacing("foo", tip)'
   (func
     (symbol 'strictreplacing')
     (list
       (string 'foo')
       (symbol 'tip')))
   * expanded:
   (or
     (list
       (symbol 'tip')
       (func
         (symbol 'desc')
         (string '$1'))))
   * set:
   <addset
     <baseset [9]>,
     <filteredset
       <fullreposet+ 0:10>,
       <desc '$1'>>>
   9
 
   $ try 'd(2:5)'
   (func
     (symbol 'd')
     (range
       (symbol '2')
       (symbol '5')))
   * expanded:
   (func
     (symbol 'reverse')
     (func
       (symbol 'sort')
       (list
         (range
           (symbol '2')
           (symbol '5'))
         (symbol 'date'))))
   * set:
   <baseset [4, 5, 3, 2]>
   4
   5
   3
   2
   $ try 'rs(2 or 3, date)'
   (func
     (symbol 'rs')
     (list
       (or
         (list
           (symbol '2')
           (symbol '3')))
       (symbol 'date')))
   * expanded:
   (func
     (symbol 'reverse')
     (func
       (symbol 'sort')
       (list
         (or
           (list
             (symbol '2')
             (symbol '3')))
         (symbol 'date'))))
   * set:
   <baseset [3, 2]>
   3
   2
   $ try 'rs()'
   (func
     (symbol 'rs')
     None)
   hg: parse error: invalid number of arguments: 0
   [255]
   $ try 'rs(2)'
   (func
     (symbol 'rs')
     (symbol '2'))
   hg: parse error: invalid number of arguments: 1
   [255]
   $ try 'rs(2, data, 7)'
   (func
     (symbol 'rs')
     (list
       (symbol '2')
       (symbol 'data')
       (symbol '7')))
   hg: parse error: invalid number of arguments: 3
   [255]
   $ try 'rs4(2 or 3, x, x, date)'
   (func
     (symbol 'rs4')
     (list
       (or
         (list
           (symbol '2')
           (symbol '3')))
       (symbol 'x')
       (symbol 'x')
       (symbol 'date')))
   * expanded:
   (func
     (symbol 'reverse')
     (func
       (symbol 'sort')
       (list
         (or
           (list
             (symbol '2')
             (symbol '3')))
         (symbol 'date'))))
   * set:
   <baseset [3, 2]>
   3
   2
 
 issue4553: check that revset aliases override existing hash prefix
 
   $ hg log -qr e
   6:e0cc66ef77e8
 
   $ hg log -qr e --config revsetalias.e="all()"
   0:2785f51eece5
   1:d75937da8da0
   2:5ed5505e9f1c
   3:8528aa5637f2
   4:2326846efdab
   5:904fa392b941
   6:e0cc66ef77e8
   7:013af1973af4
   8:d5d0dcbdc4d9
   9:24286f4ae135
 
   $ hg log -qr e: --config revsetalias.e="0"
   0:2785f51eece5
   1:d75937da8da0
   2:5ed5505e9f1c
   3:8528aa5637f2
   4:2326846efdab
   5:904fa392b941
   6:e0cc66ef77e8
   7:013af1973af4
   8:d5d0dcbdc4d9
   9:24286f4ae135
 
   $ hg log -qr :e --config revsetalias.e="9"
   0:2785f51eece5
   1:d75937da8da0
   2:5ed5505e9f1c
   3:8528aa5637f2
   4:2326846efdab
   5:904fa392b941
   6:e0cc66ef77e8
   7:013af1973af4
   8:d5d0dcbdc4d9
   9:24286f4ae135
 
   $ hg log -qr e:
   6:e0cc66ef77e8
   7:013af1973af4
   8:d5d0dcbdc4d9
   9:24286f4ae135
 
   $ hg log -qr :e
   0:2785f51eece5
   1:d75937da8da0
   2:5ed5505e9f1c
   3:8528aa5637f2
   4:2326846efdab
   5:904fa392b941
   6:e0cc66ef77e8
 
 issue2549 - correct optimizations
 
   $ try 'limit(1 or 2 or 3, 2) and not 2'
   (and
     (func
       (symbol 'limit')
       (list
         (or
           (list
             (symbol '1')
             (symbol '2')
             (symbol '3')))
         (symbol '2')))
     (not
       (symbol '2')))
   * set:
   <filteredset
     <baseset [1, 2]>,
     <not
       <baseset [2]>>>
   1
   $ try 'max(1 or 2) and not 2'
   (and
     (func
       (symbol 'max')
       (or
         (list
           (symbol '1')
           (symbol '2'))))
     (not
       (symbol '2')))
   * set:
   <filteredset
     <baseset
       <max
         <fullreposet+ 0:10>,
         <baseset [1, 2]>>>,
     <not
       <baseset [2]>>>
   $ try 'min(1 or 2) and not 1'
   (and
     (func
       (symbol 'min')
       (or
         (list
           (symbol '1')
           (symbol '2'))))
     (not
       (symbol '1')))
   * set:
   <filteredset
     <baseset
       <min
         <fullreposet+ 0:10>,
         <baseset [1, 2]>>>,
     <not
       <baseset [1]>>>
   $ try 'last(1 or 2, 1) and not 2'
   (and
     (func
       (symbol 'last')
       (list
         (or
           (list
             (symbol '1')
             (symbol '2')))
         (symbol '1')))
     (not
       (symbol '2')))
   * set:
   <filteredset
     <baseset [2]>,
     <not
       <baseset [2]>>>
 
 issue4289 - ordering of built-ins
   $ hg log -M -q -r 3:2
   3:8528aa5637f2
   2:5ed5505e9f1c
 
 test revsets started with 40-chars hash (issue3669)
 
   $ ISSUE3669_TIP=`hg tip --template '{node}'`
   $ hg log -r "${ISSUE3669_TIP}" --template '{rev}\n'
   9
   $ hg log -r "${ISSUE3669_TIP}^" --template '{rev}\n'
   8
 
 test or-ed indirect predicates (issue3775)
 
   $ log '6 or 6^1' | sort
   5
   6
   $ log '6^1 or 6' | sort
   5
   6
   $ log '4 or 4~1' | sort
   2
   4
   $ log '4~1 or 4' | sort
   2
   4
   $ log '(0 or 2):(4 or 6) or 0 or 6' | sort
   0
   1
   2
   3
   4
   5
   6
   $ log '0 or 6 or (0 or 2):(4 or 6)' | sort
   0
   1
   2
   3
   4
   5
   6
 
 tests for 'remote()' predicate:
 #.  (csets in remote) (id)            (remote)
 1.  less than local   current branch  "default"
 2.  same with local   specified       "default"
 3.  more than local   specified       specified
 
   $ hg clone --quiet -U . ../remote3
   $ cd ../remote3
   $ hg update -q 7
   $ echo r > r
   $ hg ci -Aqm 10
   $ log 'remote()'
   7
   $ log 'remote("a-b-c-")'
   2
   $ cd ../repo
   $ log 'remote(".a.b.c.", "../remote3")'
 
 tests for concatenation of strings/symbols by "##"
 
   $ try "278 ## '5f5' ## 1ee ## 'ce5'"
   (_concat
     (_concat
       (_concat
         (symbol '278')
         (string '5f5'))
       (symbol '1ee'))
     (string 'ce5'))
   * concatenated:
   (string '2785f51eece5')
   * set:
   <baseset [0]>
   0
 
   $ echo 'cat4($1, $2, $3, $4) = $1 ## $2 ## $3 ## $4' >> .hg/hgrc
   $ try "cat4(278, '5f5', 1ee, 'ce5')"
   (func
     (symbol 'cat4')
     (list
       (symbol '278')
       (string '5f5')
       (symbol '1ee')
       (string 'ce5')))
   * expanded:
   (_concat
     (_concat
       (_concat
         (symbol '278')
         (string '5f5'))
       (symbol '1ee'))
     (string 'ce5'))
   * concatenated:
   (string '2785f51eece5')
   * set:
   <baseset [0]>
   0
 
 (check concatenation in alias nesting)
 
   $ echo 'cat2($1, $2) = $1 ## $2' >> .hg/hgrc
   $ echo 'cat2x2($1, $2, $3, $4) = cat2($1 ## $2, $3 ## $4)' >> .hg/hgrc
   $ log "cat2x2(278, '5f5', 1ee, 'ce5')"
   0
 
 (check operator priority)
 
   $ echo 'cat2n2($1, $2, $3, $4) = $1 ## $2 or $3 ## $4~2' >> .hg/hgrc
   $ log "cat2n2(2785f5, 1eece5, 24286f, 4ae135)"
   0
   4
 
   $ cd ..
 
 prepare repository that has "default" branches of multiple roots
 
   $ hg init namedbranch
   $ cd namedbranch
 
   $ echo default0 >> a
   $ hg ci -Aqm0
   $ echo default1 >> a
   $ hg ci -m1
 
   $ hg branch -q stable
   $ echo stable2 >> a
   $ hg ci -m2
   $ echo stable3 >> a
   $ hg ci -m3
 
   $ hg update -q null
   $ echo default4 >> a
   $ hg ci -Aqm4
   $ echo default5 >> a
   $ hg ci -m5
 
 "null" revision belongs to "default" branch (issue4683)
 
   $ log 'branch(null)'
   0
   1
   4
   5
 
 "null" revision belongs to "default" branch, but it shouldn't appear in set
 unless explicitly specified (issue4682)
 
   $ log 'children(branch(default))'
   1
   2
   5
 
   $ cd ..
 
 test author/desc/keyword in problematic encoding
 # unicode: cp932:
 # u30A2    0x83 0x41(= 'A')
 # u30C2    0x83 0x61(= 'a')
 
   $ hg init problematicencoding
   $ cd problematicencoding
 
   $ $PYTHON > 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\\'
   (foo\\
       ^ here)
   [255]
 
   $ cd ..
 
 Test that revset predicate of extension isn't loaded at failure of
 loading it
 
   $ cd repo
 
   $ cat <<EOF > $TESTTMP/custompredicate.py
   > from mercurial import error, registrar, revset
   > 
   > revsetpredicate = registrar.revsetpredicate()
   > 
   > @revsetpredicate(b'custom1()')
   > def custom1(repo, subset, x):
   >     return revset.baseset([1])
   > 
   > raise error.Abort(b'intentional failure of loading extension')
   > EOF
   $ cat <<EOF > .hg/hgrc
   > [extensions]
   > custompredicate = $TESTTMP/custompredicate.py
   > EOF
 
   $ hg debugrevspec "custom1()"
   *** failed to import extension custompredicate from $TESTTMP/custompredicate.py: intentional failure of loading extension
   hg: parse error: unknown identifier: custom1
   [255]
 
 Test repo.anyrevs with customized revset overrides
 
   $ cat > $TESTTMP/printprevset.py <<EOF
   > from mercurial import encoding, registrar
   > cmdtable = {}
   > command = registrar.command(cmdtable)
   > @command(b'printprevset')
   > def printprevset(ui, repo):
   >     alias = {}
   >     p = encoding.environ.get(b'P')
   >     if p:
   >         alias[b'P'] = p
   >     revs = repo.anyrevs([b'P'], user=True, localalias=alias)
   >     ui.write(b'P=%r\n' % list(revs))
   > EOF
 
   $ cat >> .hg/hgrc <<EOF
   > custompredicate = !
   > printprevset = $TESTTMP/printprevset.py
   > EOF
 
   $ hg --config revsetalias.P=1 printprevset
   P=[1]
   $ P=3 hg --config revsetalias.P=2 printprevset
   P=[3]
 
   $ cd ..
 
 Test obsstore related revsets
 
   $ hg init repo1
   $ cd repo1
   $ cat <<EOF >> .hg/hgrc
   > [experimental]
   > evolution.createmarkers=True
   > EOF
 
   $ hg debugdrawdag <<'EOS'
   >        F G
   >        |/    # split: B -> E, F
   > B C D  E     # amend: B -> C -> D
   >  \|/   |     # amend: F -> G
   >   A    A  Z  # amend: A -> Z
   > EOS
   3 new orphan changesets
   3 new content-divergent changesets
 
   $ hg log -r 'successors(Z)' -T '{desc}\n'
   Z
 
   $ hg log -r 'successors(F)' -T '{desc}\n'
   F
   G
 
   $ hg tag --remove --local C D E F G
 
   $ hg log -r 'successors(B)' -T '{desc}\n'
   B
   D
   E
   G
 
   $ hg log -r 'successors(B)' -T '{desc}\n' --hidden
   B
   C
   D
   E
   F
   G
 
   $ hg log -r 'successors(B)-obsolete()' -T '{desc}\n' --hidden
   D
   E
   G
 
   $ hg log -r 'successors(B+A)-contentdivergent()' -T '{desc}\n'
   A
   Z
   B
 
   $ hg log -r 'successors(B+A)-contentdivergent()-obsolete()' -T '{desc}\n'
   Z
 
 Test `draft() & ::x` optimization
 
   $ hg init $TESTTMP/repo2
   $ cd $TESTTMP/repo2
   $ hg debugdrawdag <<'EOS'
   >   P5 S1
   >    |  |
   > S2 | D3
   >   \|/
   >   P4
   >    |
   >   P3 D2
   >    |  |
   >   P2 D1
   >    |/
   >   P1
   >    |
   >   P0
   > EOS
   $ hg phase --public -r P5
   $ hg phase --force --secret -r S1+S2
   $ hg log -G -T '{rev} {desc} {phase}' -r 'sort(all(), topo, topo.firstbranch=P5)'
   o  8 P5 public
   |
   | o  10 S1 secret
   | |
   | o  7 D3 draft
   |/
   | o  9 S2 secret
   |/
   o  6 P4 public
   |
   o  5 P3 public
   |
   o  3 P2 public
   |
   | o  4 D2 draft
   | |
   | o  2 D1 draft
   |/
   o  1 P1 public
   |
   o  0 P0 public
   
   $ hg debugrevspec --verify -p analyzed -p optimized 'draft() & ::(((S1+D1+P5)-D3)+S2)'
   * analyzed:
   (and
     (func
       (symbol 'draft')
       None)
     (func
       (symbol 'ancestors')
       (or
         (list
           (and
             (or
               (list
                 (symbol 'S1')
                 (symbol 'D1')
                 (symbol 'P5')))
             (not
               (symbol 'D3')))
           (symbol 'S2')))))
   * optimized:
   (func
     (symbol '_phaseandancestors')
     (list
       (symbol 'draft')
       (or
         (list
           (difference
             (func
               (symbol '_list')
               (string 'S1\x00D1\x00P5'))
             (symbol 'D3'))
           (symbol 'S2')))))
   $ hg debugrevspec --verify -p analyzed -p optimized 'secret() & ::9'
   * analyzed:
   (and
     (func
       (symbol 'secret')
       None)
     (func
       (symbol 'ancestors')
       (symbol '9')))
   * optimized:
   (func
     (symbol '_phaseandancestors')
     (list
       (symbol 'secret')
       (symbol '9')))
   $ hg debugrevspec --verify -p analyzed -p optimized '7 & ( (not public()) & ::(tag()) )'
   * analyzed:
   (and
     (symbol '7')
     (and
       (not
         (func
           (symbol 'public')
           None))
       (func
         (symbol 'ancestors')
         (func
           (symbol 'tag')
           None))))
   * optimized:
   (and
     (symbol '7')
     (func
       (symbol '_phaseandancestors')
       (list
         (symbol '_notpublic')
         (func
           (symbol 'tag')
           None))))
   $ hg debugrevspec --verify -p optimized '(not public()) & ancestors(S1+D2+P5, 1)'
   * optimized:
   (and
     (func
       (symbol '_notpublic')
       None)
     (func
       (symbol 'ancestors')
       (list
         (func
           (symbol '_list')
           (string 'S1\x00D2\x00P5'))
         (symbol '1'))))
   $ hg debugrevspec --verify -p optimized '(not public()) & ancestors(S1+D2+P5, depth=1)'
   * optimized:
   (and
     (func
       (symbol '_notpublic')
       None)
     (func
       (symbol 'ancestors')
       (list
         (func
           (symbol '_list')
           (string 'S1\x00D2\x00P5'))
         (keyvalue
           (symbol 'depth')
           (symbol '1')))))
 
 test commonancestors and its optimization
 
   $ hg debugrevspec --verify -p analyzed -p optimized 'heads(commonancestors(head()))'
   * analyzed:
   (func
     (symbol 'heads')
     (func
       (symbol 'commonancestors')
       (func
         (symbol 'head')
         None)))
   * optimized:
   (func
     (symbol '_commonancestorheads')
     (func
       (symbol 'head')
       None))