fileset: add revs(revs, fileset) to evaluate set in working directory

Unlike other functions, "revs()" does not select files but switches the
evaluation context. This allow to match file with property in another revision
that the one currently evaluated.

This changeset is based on work from Yuya Nishihara.

mercurial/fileset.py

@@ -1,575 +1,601 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 re
 
 from .i18n import _
 from . import (
     error,
     merge,
     parser,
     registrar,
+    scmutil,
     util,
 )
 
 elements = {
     # token-type: binding-strength, primary, prefix, infix, suffix
     "(": (20, None, ("group", 1, ")"), ("func", 1, ")"), None),
     "-": (5, None, ("negate", 19), ("minus", 5), None),
     "not": (10, None, ("not", 10), None, None),
     "!": (10, None, ("not", 10), None, None),
     "and": (5, None, None, ("and", 5), None),
     "&": (5, None, None, ("and", 5), None),
     "or": (4, None, None, ("or", 4), None),
     "|": (4, None, None, ("or", 4), None),
     "+": (4, None, None, ("or", 4), None),
     ",": (2, None, None, ("list", 2), None),
     ")": (0, None, None, None, None),
     "symbol": (0, "symbol", None, None, None),
     "string": (0, "string", None, None, None),
     "end": (0, None, None, None, None),
 }
 
 keywords = set(['and', 'or', 'not'])
 
 globchars = ".*{}[]?/\\_"
 
 def tokenize(program):
     pos, l = 0, len(program)
     while pos < l:
         c = program[pos]
         if c.isspace(): # skip inter-token whitespace
             pass
         elif c in "(),-|&+!": # handle simple operators
             yield (c, None, pos)
         elif (c in '"\'' or c == 'r' and
               program[pos:pos + 2] in ("r'", 'r"')): # handle quoted strings
             if c == 'r':
                 pos += 1
                 c = program[pos]
                 decode = lambda x: x
             else:
                 decode = parser.unescapestr
             pos += 1
             s = pos
             while pos < l: # find closing quote
                 d = program[pos]
                 if d == '\\': # skip over escaped characters
                     pos += 2
                     continue
                 if d == c:
                     yield ('string', decode(program[s:pos]), s)
                     break
                 pos += 1
             else:
                 raise error.ParseError(_("unterminated string"), s)
         elif c.isalnum() or c in globchars or ord(c) > 127:
             # gather up a symbol/keyword
             s = pos
             pos += 1
             while pos < l: # find end of symbol
                 d = program[pos]
                 if not (d.isalnum() or d in globchars or ord(d) > 127):
                     break
                 pos += 1
             sym = program[s:pos]
             if sym in keywords: # operator keywords
                 yield (sym, None, s)
             else:
                 yield ('symbol', sym, s)
             pos -= 1
         else:
             raise error.ParseError(_("syntax error"), pos)
         pos += 1
     yield ('end', None, pos)
 
 def parse(expr):
     p = parser.parser(elements)
     tree, pos = p.parse(tokenize(expr))
     if pos != len(expr):
         raise error.ParseError(_("invalid token"), pos)
     return tree
 
 def getstring(x, err):
     if x and (x[0] == 'string' or x[0] == 'symbol'):
         return x[1]
     raise error.ParseError(err)
 
 def getset(mctx, x):
     if not x:
         raise error.ParseError(_("missing argument"))
     return methods[x[0]](mctx, *x[1:])
 
 def stringset(mctx, x):
     m = mctx.matcher([x])
     return [f for f in mctx.subset if m(f)]
 
 def andset(mctx, x, y):
     return getset(mctx.narrow(getset(mctx, x)), y)
 
 def orset(mctx, x, y):
     # needs optimizing
     xl = getset(mctx, x)
     yl = getset(mctx, y)
     return xl + [f for f in yl if f not in xl]
 
 def notset(mctx, x):
     s = set(getset(mctx, x))
     return [r for r in mctx.subset if r not in s]
 
 def minusset(mctx, x, y):
     xl = getset(mctx, x)
     yl = set(getset(mctx, y))
     return [f for f in xl if f not in yl]
 
 def listset(mctx, a, b):
     raise error.ParseError(_("can't use a list in this context"),
                            hint=_('see hg help "filesets.x or y"'))
 
 # symbols are callable like:
 #  fun(mctx, x)
 # with:
 #  mctx - current matchctx instance
 #  x - argument in tree form
 symbols = {}
 
 # filesets using matchctx.status()
 _statuscallers = set()
 
 # filesets using matchctx.existing()
 _existingcallers = 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 = mctx.status().modified
     return [f for f in mctx.subset if f in s]
 
 @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 = mctx.status().added
     return [f for f in mctx.subset if f in s]
 
 @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 = mctx.status().removed
     return [f for f in mctx.subset if f in s]
 
 @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 = mctx.status().deleted
     return [f for f in mctx.subset if f in s]
 
 @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 = mctx.status().deleted
     return [f for f in mctx.subset if f in s]
 
 @predicate('unknown()', callstatus=True)
 def unknown(mctx, x):
     """File that is unknown according to :hg:`status`. These files will only be
     considered if this predicate is used.
     """
     # i18n: "unknown" is a keyword
     getargs(x, 0, 0, _("unknown takes no arguments"))
     s = mctx.status().unknown
     return [f for f in mctx.subset if f in s]
 
 @predicate('ignored()', callstatus=True)
 def ignored(mctx, x):
     """File that is ignored according to :hg:`status`. These files will only be
     considered if this predicate is used.
     """
     # i18n: "ignored" is a keyword
     getargs(x, 0, 0, _("ignored takes no arguments"))
     s = mctx.status().ignored
     return [f for f in mctx.subset if f in s]
 
 @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 = mctx.status().clean
     return [f for f in mctx.subset if f in s]
 
 def func(mctx, a, b):
     if a[0] == 'symbol' and a[1] in symbols:
         funcname = a[1]
         enabled = mctx._existingenabled
         mctx._existingenabled = funcname in _existingcallers
         try:
             return symbols[funcname](mctx, b)
         finally:
             mctx._existingenabled = enabled
 
     keep = lambda fn: getattr(fn, '__doc__', None) is not None
 
     syms = [s for (s, fn) in symbols.items() if keep(fn)]
     raise error.UnknownIdentifier(a[1], syms)
 
 def getlist(x):
     if not x:
         return []
     if x[0] == 'list':
         return getlist(x[1]) + [x[2]]
     return [x]
 
 def getargs(x, min, max, err):
     l = getlist(x)
     if len(l) < min or len(l) > max:
         raise error.ParseError(err)
     return l
 
 @predicate('binary()', callexisting=True)
 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 [f for f in mctx.existing() if util.binary(mctx.ctx[f].data())]
 
 @predicate('exec()', callexisting=True)
 def exec_(mctx, x):
     """File that is marked as executable.
     """
     # i18n: "exec" is a keyword
     getargs(x, 0, 0, _("exec takes no arguments"))
     return [f for f in mctx.existing() if mctx.ctx.flags(f) == 'x']
 
 @predicate('symlink()', callexisting=True)
 def symlink(mctx, x):
     """File that is marked as a symlink.
     """
     # i18n: "symlink" is a keyword
     getargs(x, 0, 0, _("symlink takes no arguments"))
     return [f for f in mctx.existing() if mctx.ctx.flags(f) == 'l']
 
 @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 []
     ms = merge.mergestate.read(mctx.ctx.repo())
     return [f for f in mctx.subset if f in ms and ms[f] == 'r']
 
 @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 []
     ms = merge.mergestate.read(mctx.ctx.repo())
     return [f for f in mctx.subset if f in ms and ms[f] == 'u']
 
 @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"))
     ignore = mctx.ctx.repo().dirstate._ignore
     return [f for f in mctx.subset if ignore(f)]
 
 @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"))
     checkwinfilename = util.checkwinfilename
     return [f for f in mctx.subset if checkwinfilename(f) is None]
 
 @predicate('grep(regex)', callexisting=True)
 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') % e)
     return [f for f in mctx.existing() if r.search(mctx.ctx[f].data())]
 
 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)
 
 @predicate('size(expression)', callexisting=True)
 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")).strip()
     if '-' in expr: # do we have a range?
         a, b = expr.split('-', 1)
         a = util.sizetoint(a)
         b = util.sizetoint(b)
         m = lambda x: x >= a and x <= b
     elif expr.startswith("<="):
         a = util.sizetoint(expr[2:])
         m = lambda x: x <= a
     elif expr.startswith("<"):
         a = util.sizetoint(expr[1:])
         m = lambda x: x < a
     elif expr.startswith(">="):
         a = util.sizetoint(expr[2:])
         m = lambda x: x >= a
     elif expr.startswith(">"):
         a = util.sizetoint(expr[1:])
         m = lambda x: x > a
     elif expr[0].isdigit or expr[0] == '.':
         a = util.sizetoint(expr)
         b = _sizetomax(expr)
         m = lambda x: x >= a and x <= b
     else:
         raise error.ParseError(_("couldn't parse size: %s") % expr)
 
     return [f for f in mctx.existing() if m(mctx.ctx[f].size())]
 
 @predicate('encoding(name)', callexisting=True)
 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"))
 
     s = []
     for f in mctx.existing():
         d = mctx.ctx[f].data()
         try:
             d.decode(enc)
         except LookupError:
             raise error.Abort(_("unknown encoding '%s'") % enc)
         except UnicodeDecodeError:
             continue
         s.append(f)
 
     return s
 
 @predicate('eol(style)', callexisting=True)
 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"))
 
     s = []
     for f in mctx.existing():
         d = mctx.ctx[f].data()
         if util.binary(d):
             continue
         if (enc == 'dos' or enc == 'win') and '\r\n' in d:
             s.append(f)
         elif enc == 'unix' and re.search('(?<!\r)\n', d):
             s.append(f)
         elif enc == 'mac' and re.search('\r(?!\n)', d):
             s.append(f)
     return s
 
 @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"))
     s = []
     for f in mctx.subset:
         p = mctx.ctx[f].parents()
         if p and p[0].path() != f:
             s.append(f)
     return s
 
+@predicate('revs(revs, pattern)')
+def revs(mctx, x):
+    """``revs(set, revspec)``
+
+    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])
+
+    found = set()
+    result = []
+    for r in revs:
+        ctx = repo[r]
+        for f in getset(mctx.switch(ctx, _buildstatus(ctx, x)), x):
+            if f not in found:
+                found.add(f)
+                result.append(f)
+    return result
+
 @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 = sorted(ctx.substate)
     if x:
         # i18n: "subrepo" is a keyword
         pat = getstring(x, _("subrepo requires a pattern or no arguments"))
 
         from . import match as matchmod # avoid circular import issues
         fast = not matchmod.patkind(pat)
         if fast:
             def m(s):
                 return (s == pat)
         else:
             m = matchmod.match(ctx.repo().root, '', [pat], ctx=ctx)
         return [sub for sub in sstate if m(sub)]
     else:
         return [sub for sub in sstate]
 
 methods = {
     'string': stringset,
     'symbol': stringset,
     'and': andset,
     'or': orset,
     'minus': minusset,
     'list': listset,
     'group': getset,
     'not': notset,
     'func': func,
 }
 
 class matchctx(object):
     def __init__(self, ctx, subset, status=None):
         self.ctx = ctx
         self.subset = subset
         self._status = status
         self._existingenabled = False
     def status(self):
         return self._status
     def matcher(self, patterns):
         return self.ctx.match(patterns)
     def filter(self, files):
         return [f for f in files if f in self.subset]
     def existing(self):
         assert self._existingenabled, 'unexpected existing() invocation'
         if self._status is not None:
             removed = set(self._status[3])
             unknown = set(self._status[4] + self._status[5])
         else:
             removed = set()
             unknown = set()
         return (f for f in self.subset
                 if (f in self.ctx and f not in removed) or f in unknown)
     def narrow(self, files):
         return matchctx(self.ctx, self.filter(files), self._status)
     def switch(self, ctx, status=None):
         subset = self.filter(_buildsubset(ctx, status))
         return matchctx(ctx, subset, status)
 
 class fullmatchctx(matchctx):
     """A match context where any files in any revisions should be valid"""
 
     def __init__(self, ctx, status=None):
         subset = _buildsubset(ctx, status)
         super(fullmatchctx, self).__init__(ctx, subset, status)
     def switch(self, ctx, status=None):
         return fullmatchctx(ctx, status)
 
 # filesets using matchctx.switch()
 _switchcallers = [
+    'revs',
 ]
 
 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 _buildsubset(ctx, status):
     if status:
         subset = []
         for c in status:
             subset.extend(c)
         return subset
     else:
         return list(ctx.walk(ctx.match([])))
 
 def getfileset(ctx, expr):
     tree = parse(expr)
     return getset(fullmatchctx(ctx, _buildstatus(ctx, tree)), tree)
 
 def _buildstatus(ctx, tree):
     # do we need status info?
     if (_intree(_statuscallers, tree) or
         # Using matchctx.existing() on a workingctx requires us to check
         # for deleted files.
         (ctx.rev() is None and _intree(_existingcallers, tree))):
         unknown = _intree(['unknown'], tree)
         ignored = _intree(['ignored'], tree)
 
         r = ctx.repo()
         return r.status(ctx.p1(), ctx,
                         unknown=unknown, ignored=ignored, clean=True)
     else:
         return None
 
 def prettyformat(tree):
     return parser.prettyformat(tree, ('string', 'symbol'))
 
 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)
         if func._callexisting:
             _existingcallers.add(name)
 
 # load built-in predicates explicitly to setup _statuscallers/_existingcallers
 loadpredicate(None, None, predicate)
 
 # tell hggettext to extract docstrings from these functions:
 i18nfunctions = symbols.values()

mercurial/help/filesets.txt

@@ -1,74 +1,78 b''
 Mercurial supports a functional language for selecting a set of
 files.
 
 Like other file patterns, this pattern type is indicated by a prefix,
 'set:'. The language supports a number of predicates which are joined
 by infix operators. Parenthesis can be used for grouping.
 
 Identifiers such as filenames or patterns must be quoted with single
 or double quotes if they contain characters outside of
 ``[.*{}[]?/\_a-zA-Z0-9\x80-\xff]`` or if they match one of the
 predefined predicates. This generally applies to file patterns other
 than globs and arguments for predicates.
 
 Special characters can be used in quoted identifiers by escaping them,
 e.g., ``\n`` is interpreted as a newline. To prevent them from being
 interpreted, strings can be prefixed with ``r``, e.g. ``r'...'``.
 
 See also :hg:`help patterns`.
 
 Operators
 =========
 
 There is a single prefix operator:
 
 ``not x``
   Files not in x. Short form is ``! x``.
 
 These are the supported infix operators:
 
 ``x and y``
   The intersection of files in x and y. Short form is ``x & y``.
 
 ``x or y``
   The union of files in x and y. There are two alternative short
   forms: ``x | y`` and ``x + y``.
 
 ``x - y``
   Files in x but not in y.
 
 Predicates
 ==========
 
 The following predicates are supported:
 
 .. predicatesmarker
 
 Examples
 ========
 
 Some sample queries:
 
 - Show status of files that appear to be binary in the working directory::
 
     hg status -A "set:binary()"
 
 - Forget files that are in .hgignore but are already tracked::
 
     hg forget "set:hgignore() and not ignored()"
 
 - Find text files that contain a string::
 
     hg files "set:grep(magic) and not binary()"
 
 - Find C files in a non-standard encoding::
 
     hg files "set:**.c and not encoding('UTF-8')"
 
 - Revert copies of large binary files::
 
     hg revert "set:copied() and binary() and size('>1M')"
 
+- Revert files that were added to the working directory::
+
+    hg revert "set:wdir(added())"
+
 - Remove files listed in foo.lst that contain the letter a or b::
 
     hg remove "set: 'listfile:foo.lst' and (**a* or **b*)"

tests/test-fileset.t

@@ -1,369 +1,523 b''
   $ fileset() {
   >   hg debugfileset "$@"
   > }
 
   $ 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')
   a1
   $ fileset -v 'a*'
   ('symbol', 'a*')
   a1
   a2
   $ fileset -v '"re:a\d"'
   ('string', 're:a\\d')
   a1
   a2
   $ fileset -v '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
   [255]
 
 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()'
   a2
   b2
   $ 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())'
+  b2
+  a2
+  $ fileset -r0 'added() or revs("wdir()", added())'
+  a1
+  a2
+  b1
+  b2
+  c1
+
 Test files properties
 
   >>> file('bin', 'wb').write('\0a')
   $ fileset 'binary()'
   $ fileset 'binary() and unknown()'
   bin
   $ echo '^bin$' >> .hgignore
   $ fileset 'binary() and ignored()'
   bin
   $ hg add bin
   $ fileset 'binary()'
   bin
 
   $ fileset 'grep("b{1}")'
   b2
   c1
   b1
   $ fileset 'grep("missingparens(")'
   hg: parse error: invalid match pattern: unbalanced parenthesis
   [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
 
   >>> file('1k', 'wb').write(' '*1024)
   >>> file('2k', 'wb').write(' '*2048)
   $ 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")
   [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 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 update -C .' 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()'
   b2
   bin
   $ 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("sub")'
   sub
   $ fileset -r4 'b2 or c1'
   b2
   c1
 
   >>> open('dos', 'wb').write("dos\r\n")
   >>> open('mixed', 'wb').write("dos\r\nunix\n")
   >>> open('mac', 'wb').write("mac\r")
   $ 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)'
   mixed
   .hgsub
   .hgsubstate
   b1
   b2
   c1
   $ fileset 'eol(mac)'
   mac
 
 Test safety of 'encoding' on removed files
 
 #if symlink
   $ fileset 'encoding("ascii")'
   dos
   mac
   mixed
   .hgsub
   .hgsubstate
   1k
   2k
   b1
   b2
   b2link
   bin
   c1
 #else
   $ fileset 'encoding("ascii")'
   dos
   mac
   mixed
   .hgsub
   .hgsubstate
   1k
   2k
   b1
   b2
   bin
   c1
 #endif
 
 Test detection of unintentional 'matchctx.existing()' invocation
 
   $ cat > $TESTTMP/existingcaller.py <<EOF
   > from mercurial import registrar
   > 
   > filesetpredicate = registrar.filesetpredicate()
   > @filesetpredicate('existingcaller()', callexisting=False)
   > def existingcaller(mctx, x):
   >     # this 'mctx.existing()' invocation is unintentional
   >     return [f for f in mctx.existing()]
   > EOF
 
   $ cat >> .hg/hgrc <<EOF
   > [extensions]
   > existingcaller = $TESTTMP/existingcaller.py
   > EOF
 
   $ fileset 'existingcaller()' 2>&1 | tail -1
   AssertionError: unexpected existing() invocation
+
+Test 'revs(...)'
+================
+
+small reminder of the repository state
+
+  $ hg log -G
+  @  changeset:   4:160936123545
+  |  tag:         tip
+  |  user:        test
+  |  date:        Thu Jan 01 00:00:00 1970 +0000
+  |  summary:     subrepo
+  |
+  o    changeset:   3:9d594e11b8c9
+  |\   parent:      2:55b05bdebf36
+  | |  parent:      1:830839835f98
+  | |  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:   1:830839835f98
+  |/   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
+  A bin
+  A c1
+  A con.xml
+  R a2
+  $ hg status --change 2
+  M b2
+  $ hg status --change 3
+  M b2
+  A 1k
+  A 2k
+  A b2link
+  A bin
+  A c1
+  A con.xml
+  R a2
+  $ hg status --change 4
+  A .hgsub
+  A .hgsubstate
+  $ hg status
+  A dos
+  A mac
+  A mixed
+  R con.xml
+  ! a1
+  ? b2.orig
+  ? c3
+  ? unknown
+
+Test files at -r0 should be filtered by files at wdir
+-----------------------------------------------------
+
+  $ fileset -r0 '* and revs("wdir()", *)'
+  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())"
+  a1
+  a2
+  b1
+  b2
+  .hgsub
+  .hgsubstate
+
+overlapping set
+
+  $ fileset "revs('1+2', modified())"
+  b2