stringutil: fix prettyrepr() to not orphan foo=<...> line

mercurial/utils/stringutil.py

@@ -1,530 +1,541 b''
 # stringutil.py - utility for generic string formatting, parsing, etc.
 #
 #  Copyright 2005 K. Thananchayan <[e-mail]>
 #  Copyright 2005-2007 Matt Mackall <[e-mail]>
 #  Copyright 2006 Vadim Gelfer <[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 ast
 import codecs
 import re as remod
 import textwrap
 
 from ..i18n import _
 from ..thirdparty import attr
 
 from .. import (
     encoding,
     error,
     pycompat,
 )
 
 def pprint(o, bprefix=False):
     """Pretty print an object."""
     if isinstance(o, bytes):
         if bprefix:
             return "b'%s'" % escapestr(o)
         return "'%s'" % escapestr(o)
     elif isinstance(o, bytearray):
         # codecs.escape_encode() can't handle bytearray, so escapestr fails
         # without coercion.
         return "bytearray['%s']" % escapestr(bytes(o))
     elif isinstance(o, list):
         return '[%s]' % (b', '.join(pprint(a, bprefix=bprefix) for a in o))
     elif isinstance(o, dict):
         return '{%s}' % (b', '.join(
             '%s: %s' % (pprint(k, bprefix=bprefix),
                         pprint(v, bprefix=bprefix))
             for k, v in sorted(o.items())))
     elif isinstance(o, tuple):
         return '(%s)' % (b', '.join(pprint(a, bprefix=bprefix) for a in o))
     else:
         return pycompat.byterepr(o)
 
 def prettyrepr(o):
     """Pretty print a representation of a possibly-nested object"""
     lines = []
     rs = pycompat.byterepr(o)
-    p = 0
-    while p < len(rs):
-        q = rs.find('<', p + 1)
-        if q < 0:
-            q = len(rs)
-        l = rs.count('<', 0, p) - rs.count('>', 0, p)
+    p0 = p1 = 0
+    while p0 < len(rs):
+        # '... field=<type ... field=<type ...'
+        #      ~~~~~~~~~~~~~~~~
+        #      p0    p1        q0    q1
+        q0 = -1
+        q1 = rs.find('<', p1 + 1)
+        if q1 < 0:
+            q1 = len(rs)
+        elif q1 > p1 + 1 and rs.startswith('=', q1 - 1):
+            # backtrack for ' field=<'
+            q0 = rs.rfind(' ', p1 + 1, q1 - 1)
+        if q0 < 0:
+            q0 = q1
+        else:
+            q0 += 1  # skip ' '
+        l = rs.count('<', 0, p0) - rs.count('>', 0, p0)
         assert l >= 0
-        lines.append((l, rs[p:q].rstrip()))
-        p = q
+        lines.append((l, rs[p0:q0].rstrip()))
+        p0, p1 = q0, q1
     return '\n'.join('  ' * l + s for l, s in lines)
 
 def binary(s):
     """return true if a string is binary data"""
     return bool(s and '\0' in s)
 
 def stringmatcher(pattern, casesensitive=True):
     """
     accepts a string, possibly starting with 're:' or 'literal:' prefix.
     returns the matcher name, pattern, and matcher function.
     missing or unknown prefixes are treated as literal matches.
 
     helper for tests:
     >>> def test(pattern, *tests):
     ...     kind, pattern, matcher = stringmatcher(pattern)
     ...     return (kind, pattern, [bool(matcher(t)) for t in tests])
     >>> def itest(pattern, *tests):
     ...     kind, pattern, matcher = stringmatcher(pattern, casesensitive=False)
     ...     return (kind, pattern, [bool(matcher(t)) for t in tests])
 
     exact matching (no prefix):
     >>> test(b'abcdefg', b'abc', b'def', b'abcdefg')
     ('literal', 'abcdefg', [False, False, True])
 
     regex matching ('re:' prefix)
     >>> test(b're:a.+b', b'nomatch', b'fooadef', b'fooadefbar')
     ('re', 'a.+b', [False, False, True])
 
     force exact matches ('literal:' prefix)
     >>> test(b'literal:re:foobar', b'foobar', b're:foobar')
     ('literal', 're:foobar', [False, True])
 
     unknown prefixes are ignored and treated as literals
     >>> test(b'foo:bar', b'foo', b'bar', b'foo:bar')
     ('literal', 'foo:bar', [False, False, True])
 
     case insensitive regex matches
     >>> itest(b're:A.+b', b'nomatch', b'fooadef', b'fooadefBar')
     ('re', 'A.+b', [False, False, True])
 
     case insensitive literal matches
     >>> itest(b'ABCDEFG', b'abc', b'def', b'abcdefg')
     ('literal', 'ABCDEFG', [False, False, True])
     """
     if pattern.startswith('re:'):
         pattern = pattern[3:]
         try:
             flags = 0
             if not casesensitive:
                 flags = remod.I
             regex = remod.compile(pattern, flags)
         except remod.error as e:
             raise error.ParseError(_('invalid regular expression: %s')
                                    % e)
         return 're', pattern, regex.search
     elif pattern.startswith('literal:'):
         pattern = pattern[8:]
 
     match = pattern.__eq__
 
     if not casesensitive:
         ipat = encoding.lower(pattern)
         match = lambda s: ipat == encoding.lower(s)
     return 'literal', pattern, match
 
 def shortuser(user):
     """Return a short representation of a user name or email address."""
     f = user.find('@')
     if f >= 0:
         user = user[:f]
     f = user.find('<')
     if f >= 0:
         user = user[f + 1:]
     f = user.find(' ')
     if f >= 0:
         user = user[:f]
     f = user.find('.')
     if f >= 0:
         user = user[:f]
     return user
 
 def emailuser(user):
     """Return the user portion of an email address."""
     f = user.find('@')
     if f >= 0:
         user = user[:f]
     f = user.find('<')
     if f >= 0:
         user = user[f + 1:]
     return user
 
 def email(author):
     '''get email of author.'''
     r = author.find('>')
     if r == -1:
         r = None
     return author[author.find('<') + 1:r]
 
 def person(author):
     """Returns the name before an email address,
     interpreting it as per RFC 5322
 
     >>> person(b'foo@bar')
     'foo'
     >>> person(b'Foo Bar <foo@bar>')
     'Foo Bar'
     >>> person(b'"Foo Bar" <foo@bar>')
     'Foo Bar'
     >>> person(b'"Foo \"buz\" Bar" <foo@bar>')
     'Foo "buz" Bar'
     >>> # The following are invalid, but do exist in real-life
     ...
     >>> person(b'Foo "buz" Bar <foo@bar>')
     'Foo "buz" Bar'
     >>> person(b'"Foo Bar <foo@bar>')
     'Foo Bar'
     """
     if '@' not in author:
         return author
     f = author.find('<')
     if f != -1:
         return author[:f].strip(' "').replace('\\"', '"')
     f = author.find('@')
     return author[:f].replace('.', ' ')
 
 @attr.s(hash=True)
 class mailmapping(object):
     '''Represents a username/email key or value in
     a mailmap file'''
     email = attr.ib()
     name = attr.ib(default=None)
 
 def _ismailmaplineinvalid(names, emails):
     '''Returns True if the parsed names and emails
     in a mailmap entry are invalid.
 
     >>> # No names or emails fails
     >>> names, emails = [], []
     >>> _ismailmaplineinvalid(names, emails)
     True
     >>> # Only one email fails
     >>> emails = [b'[e-mail]']
     >>> _ismailmaplineinvalid(names, emails)
     True
     >>> # One email and one name passes
     >>> names = [b'Test Name']
     >>> _ismailmaplineinvalid(names, emails)
     False
     >>> # No names but two emails passes
     >>> names = []
     >>> emails = [b'[e-mail]', b'[e-mail]']
     >>> _ismailmaplineinvalid(names, emails)
     False
     '''
     return not emails or not names and len(emails) < 2
 
 def parsemailmap(mailmapcontent):
     """Parses data in the .mailmap format
 
     >>> mmdata = b"\\n".join([
     ... b'# Comment',
     ... b'Name <[e-mail]>',
     ... b'<[e-mail]> <[e-mail]>',
     ... b'Name <[e-mail]> <[e-mail]>',
     ... b'Name <[e-mail]> Commit <[e-mail]>',
     ... ])
     >>> mm = parsemailmap(mmdata)
     >>> for key in sorted(mm.keys()):
     ...     print(key)
     mailmapping(email='[e-mail]', name=None)
     mailmapping(email='[e-mail]', name=None)
     mailmapping(email='[e-mail]', name=None)
     mailmapping(email='[e-mail]', name='Commit')
     >>> for val in sorted(mm.values()):
     ...     print(val)
     mailmapping(email='[e-mail]', name='Name')
     mailmapping(email='[e-mail]', name=None)
     mailmapping(email='[e-mail]', name='Name')
     mailmapping(email='[e-mail]', name='Name')
     """
     mailmap = {}
 
     if mailmapcontent is None:
         return mailmap
 
     for line in mailmapcontent.splitlines():
 
         # Don't bother checking the line if it is a comment or
         # is an improperly formed author field
         if line.lstrip().startswith('#'):
             continue
 
         # names, emails hold the parsed emails and names for each line
         # name_builder holds the words in a persons name
         names, emails = [], []
         namebuilder = []
 
         for element in line.split():
             if element.startswith('#'):
                 # If we reach a comment in the mailmap file, move on
                 break
 
             elif element.startswith('<') and element.endswith('>'):
                 # We have found an email.
                 # Parse it, and finalize any names from earlier
                 emails.append(element[1:-1])  # Slice off the "<>"
 
                 if namebuilder:
                     names.append(' '.join(namebuilder))
                     namebuilder = []
 
                 # Break if we have found a second email, any other
                 # data does not fit the spec for .mailmap
                 if len(emails) > 1:
                     break
 
             else:
                 # We have found another word in the committers name
                 namebuilder.append(element)
 
         # Check to see if we have parsed the line into a valid form
         # We require at least one email, and either at least one
         # name or a second email
         if _ismailmaplineinvalid(names, emails):
             continue
 
         mailmapkey = mailmapping(
             email=emails[-1],
             name=names[-1] if len(names) == 2 else None,
         )
 
         mailmap[mailmapkey] = mailmapping(
             email=emails[0],
             name=names[0] if names else None,
         )
 
     return mailmap
 
 def mapname(mailmap, author):
     """Returns the author field according to the mailmap cache, or
     the original author field.
 
     >>> mmdata = b"\\n".join([
     ...     b'# Comment',
     ...     b'Name <[e-mail]>',
     ...     b'<[e-mail]> <[e-mail]>',
     ...     b'Name <[e-mail]> <[e-mail]>',
     ...     b'Name <[e-mail]> Commit <[e-mail]>',
     ... ])
     >>> m = parsemailmap(mmdata)
     >>> mapname(m, b'Commit <[e-mail]>')
     'Name <[e-mail]>'
     >>> mapname(m, b'Name <[e-mail]>')
     'Name <[e-mail]>'
     >>> mapname(m, b'Commit <[e-mail]>')
     'Name <[e-mail]>'
     >>> mapname(m, b'Commit <[e-mail]>')
     'Name <[e-mail]>'
     >>> mapname(m, b'Unknown Name <[e-mail]>')
     'Unknown Name <[e-mail]>'
     """
     # If the author field coming in isn't in the correct format,
     # or the mailmap is empty just return the original author field
     if not isauthorwellformed(author) or not mailmap:
         return author
 
     # Turn the user name into a mailmapping
     commit = mailmapping(name=person(author), email=email(author))
 
     try:
         # Try and use both the commit email and name as the key
         proper = mailmap[commit]
 
     except KeyError:
         # If the lookup fails, use just the email as the key instead
         # We call this commit2 as not to erase original commit fields
         commit2 = mailmapping(email=commit.email)
         proper = mailmap.get(commit2, mailmapping(None, None))
 
     # Return the author field with proper values filled in
     return '%s <%s>' % (
         proper.name if proper.name else commit.name,
         proper.email if proper.email else commit.email,
     )
 
 _correctauthorformat = remod.compile(br'^[^<]+\s\<[^<>]+@[^<>]+\>$')
 
 def isauthorwellformed(author):
     '''Return True if the author field is well formed
     (ie "Contributor Name <[e-mail]>")
 
     >>> isauthorwellformed(b'Good Author <[e-mail]>')
     True
     >>> isauthorwellformed(b'Author <[e-mail]>')
     True
     >>> isauthorwellformed(b'Bad Author')
     False
     >>> isauthorwellformed(b'Bad Author <[e-mail]')
     False
     >>> isauthorwellformed(b'Bad Author [e-mail]')
     False
     >>> isauthorwellformed(b'<[e-mail]>')
     False
     >>> isauthorwellformed(b'Bad Author <author>')
     False
     '''
     return _correctauthorformat.match(author) is not None
 
 def ellipsis(text, maxlength=400):
     """Trim string to at most maxlength (default: 400) columns in display."""
     return encoding.trim(text, maxlength, ellipsis='...')
 
 def escapestr(s):
     # call underlying function of s.encode('string_escape') directly for
     # Python 3 compatibility
     return codecs.escape_encode(s)[0]
 
 def unescapestr(s):
     return codecs.escape_decode(s)[0]
 
 def forcebytestr(obj):
     """Portably format an arbitrary object (e.g. exception) into a byte
     string."""
     try:
         return pycompat.bytestr(obj)
     except UnicodeEncodeError:
         # non-ascii string, may be lossy
         return pycompat.bytestr(encoding.strtolocal(str(obj)))
 
 def uirepr(s):
     # Avoid double backslash in Windows path repr()
     return pycompat.byterepr(pycompat.bytestr(s)).replace(b'\\\\', b'\\')
 
 # delay import of textwrap
 def _MBTextWrapper(**kwargs):
     class tw(textwrap.TextWrapper):
         """
         Extend TextWrapper for width-awareness.
 
         Neither number of 'bytes' in any encoding nor 'characters' is
         appropriate to calculate terminal columns for specified string.
 
         Original TextWrapper implementation uses built-in 'len()' directly,
         so overriding is needed to use width information of each characters.
 
         In addition, characters classified into 'ambiguous' width are
         treated as wide in East Asian area, but as narrow in other.
 
         This requires use decision to determine width of such characters.
         """
         def _cutdown(self, ucstr, space_left):
             l = 0
             colwidth = encoding.ucolwidth
             for i in xrange(len(ucstr)):
                 l += colwidth(ucstr[i])
                 if space_left < l:
                     return (ucstr[:i], ucstr[i:])
             return ucstr, ''
 
         # overriding of base class
         def _handle_long_word(self, reversed_chunks, cur_line, cur_len, width):
             space_left = max(width - cur_len, 1)
 
             if self.break_long_words:
                 cut, res = self._cutdown(reversed_chunks[-1], space_left)
                 cur_line.append(cut)
                 reversed_chunks[-1] = res
             elif not cur_line:
                 cur_line.append(reversed_chunks.pop())
 
         # this overriding code is imported from TextWrapper of Python 2.6
         # to calculate columns of string by 'encoding.ucolwidth()'
         def _wrap_chunks(self, chunks):
             colwidth = encoding.ucolwidth
 
             lines = []
             if self.width <= 0:
                 raise ValueError("invalid width %r (must be > 0)" % self.width)
 
             # Arrange in reverse order so items can be efficiently popped
             # from a stack of chucks.
             chunks.reverse()
 
             while chunks:
 
                 # Start the list of chunks that will make up the current line.
                 # cur_len is just the length of all the chunks in cur_line.
                 cur_line = []
                 cur_len = 0
 
                 # Figure out which static string will prefix this line.
                 if lines:
                     indent = self.subsequent_indent
                 else:
                     indent = self.initial_indent
 
                 # Maximum width for this line.
                 width = self.width - len(indent)
 
                 # First chunk on line is whitespace -- drop it, unless this
                 # is the very beginning of the text (i.e. no lines started yet).
                 if self.drop_whitespace and chunks[-1].strip() == r'' and lines:
                     del chunks[-1]
 
                 while chunks:
                     l = colwidth(chunks[-1])
 
                     # Can at least squeeze this chunk onto the current line.
                     if cur_len + l <= width:
                         cur_line.append(chunks.pop())
                         cur_len += l
 
                     # Nope, this line is full.
                     else:
                         break
 
                 # The current line is full, and the next chunk is too big to
                 # fit on *any* line (not just this one).
                 if chunks and colwidth(chunks[-1]) > width:
                     self._handle_long_word(chunks, cur_line, cur_len, width)
 
                 # If the last chunk on this line is all whitespace, drop it.
                 if (self.drop_whitespace and
                     cur_line and cur_line[-1].strip() == r''):
                     del cur_line[-1]
 
                 # Convert current line back to a string and store it in list
                 # of all lines (return value).
                 if cur_line:
                     lines.append(indent + r''.join(cur_line))
 
             return lines
 
     global _MBTextWrapper
     _MBTextWrapper = tw
     return tw(**kwargs)
 
 def wrap(line, width, initindent='', hangindent=''):
     maxindent = max(len(hangindent), len(initindent))
     if width <= maxindent:
         # adjust for weird terminal size
         width = max(78, maxindent + 1)
     line = line.decode(pycompat.sysstr(encoding.encoding),
                        pycompat.sysstr(encoding.encodingmode))
     initindent = initindent.decode(pycompat.sysstr(encoding.encoding),
                                    pycompat.sysstr(encoding.encodingmode))
     hangindent = hangindent.decode(pycompat.sysstr(encoding.encoding),
                                    pycompat.sysstr(encoding.encodingmode))
     wrapper = _MBTextWrapper(width=width,
                              initial_indent=initindent,
                              subsequent_indent=hangindent)
     return wrapper.fill(line).encode(pycompat.sysstr(encoding.encoding))
 
 _booleans = {'1': True, 'yes': True, 'true': True, 'on': True, 'always': True,
              '0': False, 'no': False, 'false': False, 'off': False,
              'never': False}
 
 def parsebool(s):
     """Parse s into a boolean.
 
     If s is not a valid boolean, returns None.
     """
     return _booleans.get(s.lower(), None)
 
 def evalpythonliteral(s):
     """Evaluate a string containing a Python literal expression"""
     # We could backport our tokenizer hack to rewrite '' to u'' if we want
     if pycompat.ispy3:
         return ast.literal_eval(s.decode('latin1'))
     return ast.literal_eval(s)

tests/test-walk.t

@@ -1,652 +1,652 b''
   $ hg init t
   $ cd t
   $ mkdir -p beans
   $ for b in kidney navy turtle borlotti black pinto; do
   >     echo $b > beans/$b
   > done
   $ mkdir -p mammals/Procyonidae
   $ for m in cacomistle coatimundi raccoon; do
   >     echo $m > mammals/Procyonidae/$m
   > done
   $ echo skunk > mammals/skunk
   $ echo fennel > fennel
   $ echo fenugreek > fenugreek
   $ echo fiddlehead > fiddlehead
   $ hg addremove
   adding beans/black
   adding beans/borlotti
   adding beans/kidney
   adding beans/navy
   adding beans/pinto
   adding beans/turtle
   adding fennel
   adding fenugreek
   adding fiddlehead
   adding mammals/Procyonidae/cacomistle
   adding mammals/Procyonidae/coatimundi
   adding mammals/Procyonidae/raccoon
   adding mammals/skunk
   $ hg commit -m "commit #0"
 
   $ hg debugwalk -v
   * matcher:
   <alwaysmatcher>
   f  beans/black                     beans/black
   f  beans/borlotti                  beans/borlotti
   f  beans/kidney                    beans/kidney
   f  beans/navy                      beans/navy
   f  beans/pinto                     beans/pinto
   f  beans/turtle                    beans/turtle
   f  fennel                          fennel
   f  fenugreek                       fenugreek
   f  fiddlehead                      fiddlehead
   f  mammals/Procyonidae/cacomistle  mammals/Procyonidae/cacomistle
   f  mammals/Procyonidae/coatimundi  mammals/Procyonidae/coatimundi
   f  mammals/Procyonidae/raccoon     mammals/Procyonidae/raccoon
   f  mammals/skunk                   mammals/skunk
   $ hg debugwalk -v -I.
   * matcher:
   <includematcher includes='(?:)'>
   f  beans/black                     beans/black
   f  beans/borlotti                  beans/borlotti
   f  beans/kidney                    beans/kidney
   f  beans/navy                      beans/navy
   f  beans/pinto                     beans/pinto
   f  beans/turtle                    beans/turtle
   f  fennel                          fennel
   f  fenugreek                       fenugreek
   f  fiddlehead                      fiddlehead
   f  mammals/Procyonidae/cacomistle  mammals/Procyonidae/cacomistle
   f  mammals/Procyonidae/coatimundi  mammals/Procyonidae/coatimundi
   f  mammals/Procyonidae/raccoon     mammals/Procyonidae/raccoon
   f  mammals/skunk                   mammals/skunk
 
   $ cd mammals
   $ hg debugwalk -v
   * matcher:
   <alwaysmatcher>
   f  beans/black                     ../beans/black
   f  beans/borlotti                  ../beans/borlotti
   f  beans/kidney                    ../beans/kidney
   f  beans/navy                      ../beans/navy
   f  beans/pinto                     ../beans/pinto
   f  beans/turtle                    ../beans/turtle
   f  fennel                          ../fennel
   f  fenugreek                       ../fenugreek
   f  fiddlehead                      ../fiddlehead
   f  mammals/Procyonidae/cacomistle  Procyonidae/cacomistle
   f  mammals/Procyonidae/coatimundi  Procyonidae/coatimundi
   f  mammals/Procyonidae/raccoon     Procyonidae/raccoon
   f  mammals/skunk                   skunk
   $ hg debugwalk -v -X ../beans
   * matcher:
-  <differencematcher m1=
-    <alwaysmatcher>, m2=
-    <includematcher includes='(?:beans(?:/|$))'>>
+  <differencematcher
+    m1=<alwaysmatcher>,
+    m2=<includematcher includes='(?:beans(?:/|$))'>>
   f  fennel                          ../fennel
   f  fenugreek                       ../fenugreek
   f  fiddlehead                      ../fiddlehead
   f  mammals/Procyonidae/cacomistle  Procyonidae/cacomistle
   f  mammals/Procyonidae/coatimundi  Procyonidae/coatimundi
   f  mammals/Procyonidae/raccoon     Procyonidae/raccoon
   f  mammals/skunk                   skunk
   $ hg debugwalk -v -I '*k'
   * matcher:
   <includematcher includes='(?:mammals\\/[^/]*k(?:/|$))'>
   f  mammals/skunk  skunk
   $ hg debugwalk -v -I 'glob:*k'
   * matcher:
   <includematcher includes='(?:mammals\\/[^/]*k(?:/|$))'>
   f  mammals/skunk  skunk
   $ hg debugwalk -v -I 'relglob:*k'
   * matcher:
   <includematcher includes='(?:(?:|.*/)[^/]*k(?:/|$))'>
   f  beans/black    ../beans/black
   f  fenugreek      ../fenugreek
   f  mammals/skunk  skunk
   $ hg debugwalk -v -I 'relglob:*k' .
   * matcher:
-  <intersectionmatcher m1=
-    <patternmatcher patterns='(?:mammals(?:/|$))'>, m2=
-    <includematcher includes='(?:(?:|.*/)[^/]*k(?:/|$))'>>
+  <intersectionmatcher
+    m1=<patternmatcher patterns='(?:mammals(?:/|$))'>,
+    m2=<includematcher includes='(?:(?:|.*/)[^/]*k(?:/|$))'>>
   f  mammals/skunk  skunk
   $ hg debugwalk -v -I 're:.*k$'
   * matcher:
   <includematcher includes='(?:.*k$)'>
   f  beans/black    ../beans/black
   f  fenugreek      ../fenugreek
   f  mammals/skunk  skunk
   $ hg debugwalk -v -I 'relre:.*k$'
   * matcher:
   <includematcher includes='(?:.*.*k$)'>
   f  beans/black    ../beans/black
   f  fenugreek      ../fenugreek
   f  mammals/skunk  skunk
   $ hg debugwalk -v -I 'path:beans'
   * matcher:
   <includematcher includes='(?:beans(?:/|$))'>
   f  beans/black     ../beans/black
   f  beans/borlotti  ../beans/borlotti
   f  beans/kidney    ../beans/kidney
   f  beans/navy      ../beans/navy
   f  beans/pinto     ../beans/pinto
   f  beans/turtle    ../beans/turtle
   $ hg debugwalk -v -I 'relpath:detour/../../beans'
   * matcher:
   <includematcher includes='(?:beans(?:/|$))'>
   f  beans/black     ../beans/black
   f  beans/borlotti  ../beans/borlotti
   f  beans/kidney    ../beans/kidney
   f  beans/navy      ../beans/navy
   f  beans/pinto     ../beans/pinto
   f  beans/turtle    ../beans/turtle
 
   $ hg debugwalk -v 'rootfilesin:'
   * matcher:
   <patternmatcher patterns='(?:[^/]+$)'>
   f  fennel      ../fennel
   f  fenugreek   ../fenugreek
   f  fiddlehead  ../fiddlehead
   $ hg debugwalk -v -I 'rootfilesin:'
   * matcher:
   <includematcher includes='(?:[^/]+$)'>
   f  fennel      ../fennel
   f  fenugreek   ../fenugreek
   f  fiddlehead  ../fiddlehead
   $ hg debugwalk -v 'rootfilesin:.'
   * matcher:
   <patternmatcher patterns='(?:[^/]+$)'>
   f  fennel      ../fennel
   f  fenugreek   ../fenugreek
   f  fiddlehead  ../fiddlehead
   $ hg debugwalk -v -I 'rootfilesin:.'
   * matcher:
   <includematcher includes='(?:[^/]+$)'>
   f  fennel      ../fennel
   f  fenugreek   ../fenugreek
   f  fiddlehead  ../fiddlehead
   $ hg debugwalk -v -X 'rootfilesin:'
   * matcher:
-  <differencematcher m1=
-    <alwaysmatcher>, m2=
-    <includematcher includes='(?:[^/]+$)'>>
+  <differencematcher
+    m1=<alwaysmatcher>,
+    m2=<includematcher includes='(?:[^/]+$)'>>
   f  beans/black                     ../beans/black
   f  beans/borlotti                  ../beans/borlotti
   f  beans/kidney                    ../beans/kidney
   f  beans/navy                      ../beans/navy
   f  beans/pinto                     ../beans/pinto
   f  beans/turtle                    ../beans/turtle
   f  mammals/Procyonidae/cacomistle  Procyonidae/cacomistle
   f  mammals/Procyonidae/coatimundi  Procyonidae/coatimundi
   f  mammals/Procyonidae/raccoon     Procyonidae/raccoon
   f  mammals/skunk                   skunk
   $ hg debugwalk -v 'rootfilesin:fennel'
   * matcher:
   <patternmatcher patterns='(?:fennel/[^/]+$)'>
   $ hg debugwalk -v -I 'rootfilesin:fennel'
   * matcher:
   <includematcher includes='(?:fennel/[^/]+$)'>
   $ hg debugwalk -v 'rootfilesin:skunk'
   * matcher:
   <patternmatcher patterns='(?:skunk/[^/]+$)'>
   $ hg debugwalk -v -I 'rootfilesin:skunk'
   * matcher:
   <includematcher includes='(?:skunk/[^/]+$)'>
   $ hg debugwalk -v 'rootfilesin:beans'
   * matcher:
   <patternmatcher patterns='(?:beans/[^/]+$)'>
   f  beans/black     ../beans/black
   f  beans/borlotti  ../beans/borlotti
   f  beans/kidney    ../beans/kidney
   f  beans/navy      ../beans/navy
   f  beans/pinto     ../beans/pinto
   f  beans/turtle    ../beans/turtle
   $ hg debugwalk -v -I 'rootfilesin:beans'
   * matcher:
   <includematcher includes='(?:beans/[^/]+$)'>
   f  beans/black     ../beans/black
   f  beans/borlotti  ../beans/borlotti
   f  beans/kidney    ../beans/kidney
   f  beans/navy      ../beans/navy
   f  beans/pinto     ../beans/pinto
   f  beans/turtle    ../beans/turtle
   $ hg debugwalk -v 'rootfilesin:mammals'
   * matcher:
   <patternmatcher patterns='(?:mammals/[^/]+$)'>
   f  mammals/skunk  skunk
   $ hg debugwalk -v -I 'rootfilesin:mammals'
   * matcher:
   <includematcher includes='(?:mammals/[^/]+$)'>
   f  mammals/skunk  skunk
   $ hg debugwalk -v 'rootfilesin:mammals/'
   * matcher:
   <patternmatcher patterns='(?:mammals/[^/]+$)'>
   f  mammals/skunk  skunk
   $ hg debugwalk -v -I 'rootfilesin:mammals/'
   * matcher:
   <includematcher includes='(?:mammals/[^/]+$)'>
   f  mammals/skunk  skunk
   $ hg debugwalk -v -X 'rootfilesin:mammals'
   * matcher:
-  <differencematcher m1=
-    <alwaysmatcher>, m2=
-    <includematcher includes='(?:mammals/[^/]+$)'>>
+  <differencematcher
+    m1=<alwaysmatcher>,
+    m2=<includematcher includes='(?:mammals/[^/]+$)'>>
   f  beans/black                     ../beans/black
   f  beans/borlotti                  ../beans/borlotti
   f  beans/kidney                    ../beans/kidney
   f  beans/navy                      ../beans/navy
   f  beans/pinto                     ../beans/pinto
   f  beans/turtle                    ../beans/turtle
   f  fennel                          ../fennel
   f  fenugreek                       ../fenugreek
   f  fiddlehead                      ../fiddlehead
   f  mammals/Procyonidae/cacomistle  Procyonidae/cacomistle
   f  mammals/Procyonidae/coatimundi  Procyonidae/coatimundi
   f  mammals/Procyonidae/raccoon     Procyonidae/raccoon
 
   $ hg debugwalk -v .
   * matcher:
   <patternmatcher patterns='(?:mammals(?:/|$))'>
   f  mammals/Procyonidae/cacomistle  Procyonidae/cacomistle
   f  mammals/Procyonidae/coatimundi  Procyonidae/coatimundi
   f  mammals/Procyonidae/raccoon     Procyonidae/raccoon
   f  mammals/skunk                   skunk
   $ hg debugwalk -v -I.
   * matcher:
   <includematcher includes='(?:mammals(?:/|$))'>
   f  mammals/Procyonidae/cacomistle  Procyonidae/cacomistle
   f  mammals/Procyonidae/coatimundi  Procyonidae/coatimundi
   f  mammals/Procyonidae/raccoon     Procyonidae/raccoon
   f  mammals/skunk                   skunk
   $ hg debugwalk -v Procyonidae
   * matcher:
   <patternmatcher patterns='(?:mammals\\/Procyonidae(?:/|$))'>
   f  mammals/Procyonidae/cacomistle  Procyonidae/cacomistle
   f  mammals/Procyonidae/coatimundi  Procyonidae/coatimundi
   f  mammals/Procyonidae/raccoon     Procyonidae/raccoon
 
   $ cd Procyonidae
   $ hg debugwalk -v .
   * matcher:
   <patternmatcher patterns='(?:mammals\\/Procyonidae(?:/|$))'>
   f  mammals/Procyonidae/cacomistle  cacomistle
   f  mammals/Procyonidae/coatimundi  coatimundi
   f  mammals/Procyonidae/raccoon     raccoon
   $ hg debugwalk -v ..
   * matcher:
   <patternmatcher patterns='(?:mammals(?:/|$))'>
   f  mammals/Procyonidae/cacomistle  cacomistle
   f  mammals/Procyonidae/coatimundi  coatimundi
   f  mammals/Procyonidae/raccoon     raccoon
   f  mammals/skunk                   ../skunk
   $ cd ..
 
   $ hg debugwalk -v ../beans
   * matcher:
   <patternmatcher patterns='(?:beans(?:/|$))'>
   f  beans/black     ../beans/black
   f  beans/borlotti  ../beans/borlotti
   f  beans/kidney    ../beans/kidney
   f  beans/navy      ../beans/navy
   f  beans/pinto     ../beans/pinto
   f  beans/turtle    ../beans/turtle
   $ hg debugwalk -v .
   * matcher:
   <patternmatcher patterns='(?:mammals(?:/|$))'>
   f  mammals/Procyonidae/cacomistle  Procyonidae/cacomistle
   f  mammals/Procyonidae/coatimundi  Procyonidae/coatimundi
   f  mammals/Procyonidae/raccoon     Procyonidae/raccoon
   f  mammals/skunk                   skunk
   $ hg debugwalk -v .hg
   abort: path 'mammals/.hg' is inside nested repo 'mammals'
   [255]
   $ hg debugwalk -v ../.hg
   abort: path contains illegal component: .hg
   [255]
   $ cd ..
 
   $ hg debugwalk -v -Ibeans
   * matcher:
   <includematcher includes='(?:beans(?:/|$))'>
   f  beans/black     beans/black
   f  beans/borlotti  beans/borlotti
   f  beans/kidney    beans/kidney
   f  beans/navy      beans/navy
   f  beans/pinto     beans/pinto
   f  beans/turtle    beans/turtle
   $ hg debugwalk -v -I '{*,{b,m}*/*}k'
   * matcher:
   <includematcher includes='(?:(?:[^/]*|(?:b|m)[^/]*\\/[^/]*)k(?:/|$))'>
   f  beans/black    beans/black
   f  fenugreek      fenugreek
   f  mammals/skunk  mammals/skunk
   $ hg debugwalk -v -Ibeans mammals
   * matcher:
-  <intersectionmatcher m1=
-    <patternmatcher patterns='(?:mammals(?:/|$))'>, m2=
-    <includematcher includes='(?:beans(?:/|$))'>>
+  <intersectionmatcher
+    m1=<patternmatcher patterns='(?:mammals(?:/|$))'>,
+    m2=<includematcher includes='(?:beans(?:/|$))'>>
   $ hg debugwalk -v -Inon-existent
   * matcher:
   <includematcher includes='(?:non\\-existent(?:/|$))'>
   $ hg debugwalk -v -Inon-existent -Ibeans/black
   * matcher:
   <includematcher includes='(?:non\\-existent(?:/|$)|beans\\/black(?:/|$))'>
   f  beans/black  beans/black
   $ hg debugwalk -v -Ibeans beans/black
   * matcher:
-  <intersectionmatcher m1=
-    <patternmatcher patterns='(?:beans\\/black(?:/|$))'>, m2=
-    <includematcher includes='(?:beans(?:/|$))'>>
+  <intersectionmatcher
+    m1=<patternmatcher patterns='(?:beans\\/black(?:/|$))'>,
+    m2=<includematcher includes='(?:beans(?:/|$))'>>
   f  beans/black  beans/black  exact
   $ hg debugwalk -v -Ibeans/black beans
   * matcher:
-  <intersectionmatcher m1=
-    <patternmatcher patterns='(?:beans(?:/|$))'>, m2=
-    <includematcher includes='(?:beans\\/black(?:/|$))'>>
+  <intersectionmatcher
+    m1=<patternmatcher patterns='(?:beans(?:/|$))'>,
+    m2=<includematcher includes='(?:beans\\/black(?:/|$))'>>
   f  beans/black  beans/black
   $ hg debugwalk -v -Xbeans/black beans
   * matcher:
-  <differencematcher m1=
-    <patternmatcher patterns='(?:beans(?:/|$))'>, m2=
-    <includematcher includes='(?:beans\\/black(?:/|$))'>>
+  <differencematcher
+    m1=<patternmatcher patterns='(?:beans(?:/|$))'>,
+    m2=<includematcher includes='(?:beans\\/black(?:/|$))'>>
   f  beans/borlotti  beans/borlotti
   f  beans/kidney    beans/kidney
   f  beans/navy      beans/navy
   f  beans/pinto     beans/pinto
   f  beans/turtle    beans/turtle
   $ hg debugwalk -v -Xbeans/black -Ibeans
   * matcher:
-  <differencematcher m1=
-    <includematcher includes='(?:beans(?:/|$))'>, m2=
-    <includematcher includes='(?:beans\\/black(?:/|$))'>>
+  <differencematcher
+    m1=<includematcher includes='(?:beans(?:/|$))'>,
+    m2=<includematcher includes='(?:beans\\/black(?:/|$))'>>
   f  beans/borlotti  beans/borlotti
   f  beans/kidney    beans/kidney
   f  beans/navy      beans/navy
   f  beans/pinto     beans/pinto
   f  beans/turtle    beans/turtle
   $ hg debugwalk -v -Xbeans/black beans/black
   * matcher:
-  <differencematcher m1=
-    <patternmatcher patterns='(?:beans\\/black(?:/|$))'>, m2=
-    <includematcher includes='(?:beans\\/black(?:/|$))'>>
+  <differencematcher
+    m1=<patternmatcher patterns='(?:beans\\/black(?:/|$))'>,
+    m2=<includematcher includes='(?:beans\\/black(?:/|$))'>>
   $ hg debugwalk -v -Xbeans/black -Ibeans/black
   * matcher:
-  <differencematcher m1=
-    <includematcher includes='(?:beans\\/black(?:/|$))'>, m2=
-    <includematcher includes='(?:beans\\/black(?:/|$))'>>
+  <differencematcher
+    m1=<includematcher includes='(?:beans\\/black(?:/|$))'>,
+    m2=<includematcher includes='(?:beans\\/black(?:/|$))'>>
   $ hg debugwalk -v -Xbeans beans/black
   * matcher:
-  <differencematcher m1=
-    <patternmatcher patterns='(?:beans\\/black(?:/|$))'>, m2=
-    <includematcher includes='(?:beans(?:/|$))'>>
+  <differencematcher
+    m1=<patternmatcher patterns='(?:beans\\/black(?:/|$))'>,
+    m2=<includematcher includes='(?:beans(?:/|$))'>>
   $ hg debugwalk -v -Xbeans -Ibeans/black
   * matcher:
-  <differencematcher m1=
-    <includematcher includes='(?:beans\\/black(?:/|$))'>, m2=
-    <includematcher includes='(?:beans(?:/|$))'>>
+  <differencematcher
+    m1=<includematcher includes='(?:beans\\/black(?:/|$))'>,
+    m2=<includematcher includes='(?:beans(?:/|$))'>>
   $ hg debugwalk -v 'glob:mammals/../beans/b*'
   * matcher:
   <patternmatcher patterns='(?:beans\\/b[^/]*$)'>
   f  beans/black     beans/black
   f  beans/borlotti  beans/borlotti
   $ hg debugwalk -v '-X*/Procyonidae' mammals
   * matcher:
-  <differencematcher m1=
-    <patternmatcher patterns='(?:mammals(?:/|$))'>, m2=
-    <includematcher includes='(?:[^/]*\\/Procyonidae(?:/|$))'>>
+  <differencematcher
+    m1=<patternmatcher patterns='(?:mammals(?:/|$))'>,
+    m2=<includematcher includes='(?:[^/]*\\/Procyonidae(?:/|$))'>>
   f  mammals/skunk  mammals/skunk
   $ hg debugwalk -v path:mammals
   * matcher:
   <patternmatcher patterns='(?:mammals(?:/|$))'>
   f  mammals/Procyonidae/cacomistle  mammals/Procyonidae/cacomistle
   f  mammals/Procyonidae/coatimundi  mammals/Procyonidae/coatimundi
   f  mammals/Procyonidae/raccoon     mammals/Procyonidae/raccoon
   f  mammals/skunk                   mammals/skunk
   $ hg debugwalk -v ..
   abort: .. not under root '$TESTTMP/t'
   [255]
   $ hg debugwalk -v beans/../..
   abort: beans/../.. not under root '$TESTTMP/t'
   [255]
   $ hg debugwalk -v .hg
   abort: path contains illegal component: .hg
   [255]
   $ hg debugwalk -v beans/../.hg
   abort: path contains illegal component: .hg
   [255]
   $ hg debugwalk -v beans/../.hg/data
   abort: path contains illegal component: .hg/data
   [255]
   $ hg debugwalk -v beans/.hg
   abort: path 'beans/.hg' is inside nested repo 'beans'
   [255]
 
 Test explicit paths and excludes:
 
   $ hg debugwalk -v fennel -X fennel
   * matcher:
-  <differencematcher m1=
-    <patternmatcher patterns='(?:fennel(?:/|$))'>, m2=
-    <includematcher includes='(?:fennel(?:/|$))'>>
+  <differencematcher
+    m1=<patternmatcher patterns='(?:fennel(?:/|$))'>,
+    m2=<includematcher includes='(?:fennel(?:/|$))'>>
   $ hg debugwalk -v fennel -X 'f*'
   * matcher:
-  <differencematcher m1=
-    <patternmatcher patterns='(?:fennel(?:/|$))'>, m2=
-    <includematcher includes='(?:f[^/]*(?:/|$))'>>
+  <differencematcher
+    m1=<patternmatcher patterns='(?:fennel(?:/|$))'>,
+    m2=<includematcher includes='(?:f[^/]*(?:/|$))'>>
   $ hg debugwalk -v beans/black -X 'path:beans'
   * matcher:
-  <differencematcher m1=
-    <patternmatcher patterns='(?:beans\\/black(?:/|$))'>, m2=
-    <includematcher includes='(?:beans(?:/|$))'>>
+  <differencematcher
+    m1=<patternmatcher patterns='(?:beans\\/black(?:/|$))'>,
+    m2=<includematcher includes='(?:beans(?:/|$))'>>
   $ hg debugwalk -v -I 'path:beans/black' -X 'path:beans'
   * matcher:
-  <differencematcher m1=
-    <includematcher includes='(?:beans\\/black(?:/|$))'>, m2=
-    <includematcher includes='(?:beans(?:/|$))'>>
+  <differencematcher
+    m1=<includematcher includes='(?:beans\\/black(?:/|$))'>,
+    m2=<includematcher includes='(?:beans(?:/|$))'>>
 
 Test absolute paths:
 
   $ hg debugwalk -v `pwd`/beans
   * matcher:
   <patternmatcher patterns='(?:beans(?:/|$))'>
   f  beans/black     beans/black
   f  beans/borlotti  beans/borlotti
   f  beans/kidney    beans/kidney
   f  beans/navy      beans/navy
   f  beans/pinto     beans/pinto
   f  beans/turtle    beans/turtle
   $ hg debugwalk -v `pwd`/..
   abort: $TESTTMP/t/.. not under root '$TESTTMP/t'
   [255]
 
 Test patterns:
 
   $ hg debugwalk -v glob:\*
   * matcher:
   <patternmatcher patterns='(?:[^/]*$)'>
   f  fennel      fennel
   f  fenugreek   fenugreek
   f  fiddlehead  fiddlehead
 #if eol-in-paths
   $ echo glob:glob > glob:glob
   $ hg addremove
   adding glob:glob
   warning: filename contains ':', which is reserved on Windows: 'glob:glob'
   $ hg debugwalk -v glob:\*
   * matcher:
   <patternmatcher patterns='(?:[^/]*$)'>
   f  fennel      fennel
   f  fenugreek   fenugreek
   f  fiddlehead  fiddlehead
   f  glob:glob   glob:glob
   $ hg debugwalk -v glob:glob
   * matcher:
   <patternmatcher patterns='(?:glob$)'>
   glob: $ENOENT$
   $ hg debugwalk -v glob:glob:glob
   * matcher:
   <patternmatcher patterns='(?:glob\\:glob$)'>
   f  glob:glob  glob:glob  exact
   $ hg debugwalk -v path:glob:glob
   * matcher:
   <patternmatcher patterns='(?:glob\\:glob(?:/|$))'>
   f  glob:glob  glob:glob  exact
   $ rm glob:glob
   $ hg addremove
   removing glob:glob
 #endif
 
   $ hg debugwalk -v 'glob:**e'
   * matcher:
   <patternmatcher patterns='(?:.*e$)'>
   f  beans/turtle                    beans/turtle
   f  mammals/Procyonidae/cacomistle  mammals/Procyonidae/cacomistle
 
   $ hg debugwalk -v 're:.*[kb]$'
   * matcher:
   <patternmatcher patterns='(?:.*[kb]$)'>
   f  beans/black    beans/black
   f  fenugreek      fenugreek
   f  mammals/skunk  mammals/skunk
 
   $ hg debugwalk -v path:beans/black
   * matcher:
   <patternmatcher patterns='(?:beans\\/black(?:/|$))'>
   f  beans/black  beans/black  exact
   $ hg debugwalk -v path:beans//black
   * matcher:
   <patternmatcher patterns='(?:beans\\/black(?:/|$))'>
   f  beans/black  beans/black  exact
 
   $ hg debugwalk -v relglob:Procyonidae
   * matcher:
   <patternmatcher patterns='(?:(?:|.*/)Procyonidae$)'>
   $ hg debugwalk -v 'relglob:Procyonidae/**'
   * matcher:
   <patternmatcher patterns='(?:(?:|.*/)Procyonidae\\/.*$)'>
   f  mammals/Procyonidae/cacomistle  mammals/Procyonidae/cacomistle
   f  mammals/Procyonidae/coatimundi  mammals/Procyonidae/coatimundi
   f  mammals/Procyonidae/raccoon     mammals/Procyonidae/raccoon
   $ hg debugwalk -v 'relglob:Procyonidae/**' fennel
   * matcher:
   <patternmatcher patterns='(?:(?:|.*/)Procyonidae\\/.*$|fennel(?:/|$))'>
   f  fennel                          fennel                          exact
   f  mammals/Procyonidae/cacomistle  mammals/Procyonidae/cacomistle
   f  mammals/Procyonidae/coatimundi  mammals/Procyonidae/coatimundi
   f  mammals/Procyonidae/raccoon     mammals/Procyonidae/raccoon
   $ hg debugwalk -v beans 'glob:beans/*'
   * matcher:
   <patternmatcher patterns='(?:beans(?:/|$)|beans\\/[^/]*$)'>
   f  beans/black     beans/black
   f  beans/borlotti  beans/borlotti
   f  beans/kidney    beans/kidney
   f  beans/navy      beans/navy
   f  beans/pinto     beans/pinto
   f  beans/turtle    beans/turtle
   $ hg debugwalk -v 'glob:mamm**'
   * matcher:
   <patternmatcher patterns='(?:mamm.*$)'>
   f  mammals/Procyonidae/cacomistle  mammals/Procyonidae/cacomistle
   f  mammals/Procyonidae/coatimundi  mammals/Procyonidae/coatimundi
   f  mammals/Procyonidae/raccoon     mammals/Procyonidae/raccoon
   f  mammals/skunk                   mammals/skunk
   $ hg debugwalk -v 'glob:mamm**' fennel
   * matcher:
   <patternmatcher patterns='(?:mamm.*$|fennel(?:/|$))'>
   f  fennel                          fennel                          exact
   f  mammals/Procyonidae/cacomistle  mammals/Procyonidae/cacomistle
   f  mammals/Procyonidae/coatimundi  mammals/Procyonidae/coatimundi
   f  mammals/Procyonidae/raccoon     mammals/Procyonidae/raccoon
   f  mammals/skunk                   mammals/skunk
   $ hg debugwalk -v 'glob:j*'
   * matcher:
   <patternmatcher patterns='(?:j[^/]*$)'>
   $ hg debugwalk -v NOEXIST
   * matcher:
   <patternmatcher patterns='(?:NOEXIST(?:/|$))'>
   NOEXIST: * (glob)
 
 #if fifo
   $ mkfifo fifo
   $ hg debugwalk -v fifo
   * matcher:
   <patternmatcher patterns='(?:fifo(?:/|$))'>
   fifo: unsupported file type (type is fifo)
 #endif
 
   $ rm fenugreek
   $ hg debugwalk -v fenugreek
   * matcher:
   <patternmatcher patterns='(?:fenugreek(?:/|$))'>
   f  fenugreek  fenugreek  exact
   $ hg rm fenugreek
   $ hg debugwalk -v fenugreek
   * matcher:
   <patternmatcher patterns='(?:fenugreek(?:/|$))'>
   f  fenugreek  fenugreek  exact
   $ touch new
   $ hg debugwalk -v new
   * matcher:
   <patternmatcher patterns='(?:new(?:/|$))'>
   f  new  new  exact
 
   $ mkdir ignored
   $ touch ignored/file
   $ echo '^ignored$' > .hgignore
   $ hg debugwalk -v ignored
   * matcher:
   <patternmatcher patterns='(?:ignored(?:/|$))'>
   $ hg debugwalk -v ignored/file
   * matcher:
   <patternmatcher patterns='(?:ignored\\/file(?:/|$))'>
   f  ignored/file  ignored/file  exact
 
 Test listfile and listfile0
 
   $ $PYTHON -c "open('listfile0', 'wb').write(b'fenugreek\0new\0')"
   $ hg debugwalk -v -I 'listfile0:listfile0'
   * matcher:
   <includematcher includes='(?:fenugreek(?:/|$)|new(?:/|$))'>
   f  fenugreek  fenugreek
   f  new        new
   $ $PYTHON -c "open('listfile', 'wb').write(b'fenugreek\nnew\r\nmammals/skunk\n')"
   $ hg debugwalk -v -I 'listfile:listfile'
   * matcher:
   <includematcher includes='(?:fenugreek(?:/|$)|new(?:/|$)|mammals\\/skunk(?:/|$))'>
   f  fenugreek      fenugreek
   f  mammals/skunk  mammals/skunk
   f  new            new
 
   $ cd ..
   $ hg debugwalk -v -R t t/mammals/skunk
   * matcher:
   <patternmatcher patterns='(?:mammals\\/skunk(?:/|$))'>
   f  mammals/skunk  t/mammals/skunk  exact
   $ mkdir t2
   $ cd t2
   $ hg debugwalk -v -R ../t ../t/mammals/skunk
   * matcher:
   <patternmatcher patterns='(?:mammals\\/skunk(?:/|$))'>
   f  mammals/skunk  ../t/mammals/skunk  exact
   $ hg debugwalk -v --cwd ../t mammals/skunk
   * matcher:
   <patternmatcher patterns='(?:mammals\\/skunk(?:/|$))'>
   f  mammals/skunk  mammals/skunk  exact
 
   $ cd ..
 
 Test split patterns on overflow
 
   $ cd t
   $ echo fennel > overflow.list
   $ cat >> printnum.py <<EOF
   > from __future__ import print_function
   > for i in range(20000 // 100):
   >   print('x' * 100)
   > EOF
   $ $PYTHON printnum.py >> overflow.list
   $ echo fenugreek >> overflow.list
   $ hg debugwalk 'listfile:overflow.list' 2>&1 | egrep -v '^xxx'
   f  fennel     fennel     exact
   f  fenugreek  fenugreek  exact
   $ cd ..