templater: look up symbols/resources as if they were separated (issue5699)

It wouldn't be easy to split the mapping dict into (symbols, resources). This
patch instead rejects invalid lookup taking resources.keys() as source of
truth.

The doctest is updated since mapping['repo'] is now reserved for a repo
object.

mercurial/formatter.py

@@ -1,540 +1,542 b''
 # formatter.py - generic output formatting for mercurial
 #
 # Copyright 2012 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.
 
 """Generic output formatting for Mercurial
 
 The formatter provides API to show data in various ways. The following
 functions should be used in place of ui.write():
 
 - fm.write() for unconditional output
 - fm.condwrite() to show some extra data conditionally in plain output
 - fm.context() to provide changectx to template output
 - fm.data() to provide extra data to JSON or template output
 - fm.plain() to show raw text that isn't provided to JSON or template output
 
 To show structured data (e.g. date tuples, dicts, lists), apply fm.format*()
 beforehand so the data is converted to the appropriate data type. Use
 fm.isplain() if you need to convert or format data conditionally which isn't
 supported by the formatter API.
 
 To build nested structure (i.e. a list of dicts), use fm.nested().
 
 See also https://www.mercurial-scm.org/wiki/GenericTemplatingPlan
 
 fm.condwrite() vs 'if cond:':
 
 In most cases, use fm.condwrite() so users can selectively show the data
 in template output. If it's costly to build data, use plain 'if cond:' with
 fm.write().
 
 fm.nested() vs fm.formatdict() (or fm.formatlist()):
 
 fm.nested() should be used to form a tree structure (a list of dicts of
 lists of dicts...) which can be accessed through template keywords, e.g.
 "{foo % "{bar % {...}} {baz % {...}}"}". On the other hand, fm.formatdict()
 exports a dict-type object to template, which can be accessed by e.g.
 "{get(foo, key)}" function.
 
 Doctest helper:
 
 >>> def show(fn, verbose=False, **opts):
 ...     import sys
 ...     from . import ui as uimod
 ...     ui = uimod.ui()
 ...     ui.verbose = verbose
 ...     ui.pushbuffer()
 ...     try:
 ...         return fn(ui, ui.formatter(pycompat.sysbytes(fn.__name__),
 ...                   pycompat.byteskwargs(opts)))
 ...     finally:
 ...         print(pycompat.sysstr(ui.popbuffer()), end='')
 
 Basic example:
 
 >>> def files(ui, fm):
 ...     files = [(b'foo', 123, (0, 0)), (b'bar', 456, (1, 0))]
 ...     for f in files:
 ...         fm.startitem()
 ...         fm.write(b'path', b'%s', f[0])
 ...         fm.condwrite(ui.verbose, b'date', b'  %s',
 ...                      fm.formatdate(f[2], b'%Y-%m-%d %H:%M:%S'))
 ...         fm.data(size=f[1])
 ...         fm.plain(b'\\n')
 ...     fm.end()
 >>> show(files)
 foo
 bar
 >>> show(files, verbose=True)
 foo  1970-01-01 00:00:00
 bar  1970-01-01 00:00:01
 >>> show(files, template=b'json')
 [
  {
   "date": [0, 0],
   "path": "foo",
   "size": 123
  },
  {
   "date": [1, 0],
   "path": "bar",
   "size": 456
  }
 ]
 >>> show(files, template=b'path: {path}\\ndate: {date|rfc3339date}\\n')
 path: foo
 date: 1970-01-01T00:00:00+00:00
 path: bar
 date: 1970-01-01T00:00:01+00:00
 
 Nested example:
 
 >>> def subrepos(ui, fm):
 ...     fm.startitem()
-...     fm.write(b'repo', b'[%s]\\n', b'baz')
+...     fm.write(b'reponame', b'[%s]\\n', b'baz')
 ...     files(ui, fm.nested(b'files'))
 ...     fm.end()
 >>> show(subrepos)
 [baz]
 foo
 bar
->>> show(subrepos, template=b'{repo}: {join(files % "{path}", ", ")}\\n')
+>>> show(subrepos, template=b'{reponame}: {join(files % "{path}", ", ")}\\n')
 baz: foo, bar
 """
 
 from __future__ import absolute_import, print_function
 
 import collections
 import contextlib
 import itertools
 import os
 
 from .i18n import _
 from .node import (
     hex,
     short,
 )
 
 from . import (
     error,
     pycompat,
     templatefilters,
     templatekw,
     templater,
     util,
 )
 
 pickle = util.pickle
 
 class _nullconverter(object):
     '''convert non-primitive data types to be processed by formatter'''
 
     # set to True if context object should be stored as item
     storecontext = False
 
     @staticmethod
     def formatdate(date, fmt):
         '''convert date tuple to appropriate format'''
         return date
     @staticmethod
     def formatdict(data, key, value, fmt, sep):
         '''convert dict or key-value pairs to appropriate dict format'''
         # use plain dict instead of util.sortdict so that data can be
         # serialized as a builtin dict in pickle output
         return dict(data)
     @staticmethod
     def formatlist(data, name, fmt, sep):
         '''convert iterable to appropriate list format'''
         return list(data)
 
 class baseformatter(object):
     def __init__(self, ui, topic, opts, converter):
         self._ui = ui
         self._topic = topic
         self._style = opts.get("style")
         self._template = opts.get("template")
         self._converter = converter
         self._item = None
         # function to convert node to string suitable for this output
         self.hexfunc = hex
     def __enter__(self):
         return self
     def __exit__(self, exctype, excvalue, traceback):
         if exctype is None:
             self.end()
     def _showitem(self):
         '''show a formatted item once all data is collected'''
     def startitem(self):
         '''begin an item in the format list'''
         if self._item is not None:
             self._showitem()
         self._item = {}
     def formatdate(self, date, fmt='%a %b %d %H:%M:%S %Y %1%2'):
         '''convert date tuple to appropriate format'''
         return self._converter.formatdate(date, fmt)
     def formatdict(self, data, key='key', value='value', fmt='%s=%s', sep=' '):
         '''convert dict or key-value pairs to appropriate dict format'''
         return self._converter.formatdict(data, key, value, fmt, sep)
     def formatlist(self, data, name, fmt='%s', sep=' '):
         '''convert iterable to appropriate list format'''
         # name is mandatory argument for now, but it could be optional if
         # we have default template keyword, e.g. {item}
         return self._converter.formatlist(data, name, fmt, sep)
     def context(self, **ctxs):
         '''insert context objects to be used to render template keywords'''
         ctxs = pycompat.byteskwargs(ctxs)
         assert all(k == 'ctx' for k in ctxs)
         if self._converter.storecontext:
             self._item.update(ctxs)
     def data(self, **data):
         '''insert data into item that's not shown in default output'''
         data = pycompat.byteskwargs(data)
         self._item.update(data)
     def write(self, fields, deftext, *fielddata, **opts):
         '''do default text output while assigning data to item'''
         fieldkeys = fields.split()
         assert len(fieldkeys) == len(fielddata)
         self._item.update(zip(fieldkeys, fielddata))
     def condwrite(self, cond, fields, deftext, *fielddata, **opts):
         '''do conditional write (primarily for plain formatter)'''
         fieldkeys = fields.split()
         assert len(fieldkeys) == len(fielddata)
         self._item.update(zip(fieldkeys, fielddata))
     def plain(self, text, **opts):
         '''show raw text for non-templated mode'''
     def isplain(self):
         '''check for plain formatter usage'''
         return False
     def nested(self, field):
         '''sub formatter to store nested data in the specified field'''
         self._item[field] = data = []
         return _nestedformatter(self._ui, self._converter, data)
     def end(self):
         '''end output for the formatter'''
         if self._item is not None:
             self._showitem()
 
 def nullformatter(ui, topic):
     '''formatter that prints nothing'''
     return baseformatter(ui, topic, opts={}, converter=_nullconverter)
 
 class _nestedformatter(baseformatter):
     '''build sub items and store them in the parent formatter'''
     def __init__(self, ui, converter, data):
         baseformatter.__init__(self, ui, topic='', opts={}, converter=converter)
         self._data = data
     def _showitem(self):
         self._data.append(self._item)
 
 def _iteritems(data):
     '''iterate key-value pairs in stable order'''
     if isinstance(data, dict):
         return sorted(data.iteritems())
     return data
 
 class _plainconverter(object):
     '''convert non-primitive data types to text'''
 
     storecontext = False
 
     @staticmethod
     def formatdate(date, fmt):
         '''stringify date tuple in the given format'''
         return util.datestr(date, fmt)
     @staticmethod
     def formatdict(data, key, value, fmt, sep):
         '''stringify key-value pairs separated by sep'''
         return sep.join(fmt % (k, v) for k, v in _iteritems(data))
     @staticmethod
     def formatlist(data, name, fmt, sep):
         '''stringify iterable separated by sep'''
         return sep.join(fmt % e for e in data)
 
 class plainformatter(baseformatter):
     '''the default text output scheme'''
     def __init__(self, ui, out, topic, opts):
         baseformatter.__init__(self, ui, topic, opts, _plainconverter)
         if ui.debugflag:
             self.hexfunc = hex
         else:
             self.hexfunc = short
         if ui is out:
             self._write = ui.write
         else:
             self._write = lambda s, **opts: out.write(s)
     def startitem(self):
         pass
     def data(self, **data):
         pass
     def write(self, fields, deftext, *fielddata, **opts):
         self._write(deftext % fielddata, **opts)
     def condwrite(self, cond, fields, deftext, *fielddata, **opts):
         '''do conditional write'''
         if cond:
             self._write(deftext % fielddata, **opts)
     def plain(self, text, **opts):
         self._write(text, **opts)
     def isplain(self):
         return True
     def nested(self, field):
         # nested data will be directly written to ui
         return self
     def end(self):
         pass
 
 class debugformatter(baseformatter):
     def __init__(self, ui, out, topic, opts):
         baseformatter.__init__(self, ui, topic, opts, _nullconverter)
         self._out = out
         self._out.write("%s = [\n" % self._topic)
     def _showitem(self):
         self._out.write("    " + repr(self._item) + ",\n")
     def end(self):
         baseformatter.end(self)
         self._out.write("]\n")
 
 class pickleformatter(baseformatter):
     def __init__(self, ui, out, topic, opts):
         baseformatter.__init__(self, ui, topic, opts, _nullconverter)
         self._out = out
         self._data = []
     def _showitem(self):
         self._data.append(self._item)
     def end(self):
         baseformatter.end(self)
         self._out.write(pickle.dumps(self._data))
 
 class jsonformatter(baseformatter):
     def __init__(self, ui, out, topic, opts):
         baseformatter.__init__(self, ui, topic, opts, _nullconverter)
         self._out = out
         self._out.write("[")
         self._first = True
     def _showitem(self):
         if self._first:
             self._first = False
         else:
             self._out.write(",")
 
         self._out.write("\n {\n")
         first = True
         for k, v in sorted(self._item.items()):
             if first:
                 first = False
             else:
                 self._out.write(",\n")
             u = templatefilters.json(v, paranoid=False)
             self._out.write('  "%s": %s' % (k, u))
         self._out.write("\n }")
     def end(self):
         baseformatter.end(self)
         self._out.write("\n]\n")
 
 class _templateconverter(object):
     '''convert non-primitive data types to be processed by templater'''
 
     storecontext = True
 
     @staticmethod
     def formatdate(date, fmt):
         '''return date tuple'''
         return date
     @staticmethod
     def formatdict(data, key, value, fmt, sep):
         '''build object that can be evaluated as either plain string or dict'''
         data = util.sortdict(_iteritems(data))
         def f():
             yield _plainconverter.formatdict(data, key, value, fmt, sep)
         return templatekw.hybriddict(data, key=key, value=value, fmt=fmt, gen=f)
     @staticmethod
     def formatlist(data, name, fmt, sep):
         '''build object that can be evaluated as either plain string or list'''
         data = list(data)
         def f():
             yield _plainconverter.formatlist(data, name, fmt, sep)
         return templatekw.hybridlist(data, name=name, fmt=fmt, gen=f)
 
 class templateformatter(baseformatter):
     def __init__(self, ui, out, topic, opts):
         baseformatter.__init__(self, ui, topic, opts, _templateconverter)
         self._out = out
         spec = lookuptemplate(ui, topic, opts.get('template', ''))
         self._tref = spec.ref
         self._t = loadtemplater(ui, spec, resources=templateresources(ui),
                                 cache=templatekw.defaulttempl)
         self._parts = templatepartsmap(spec, self._t,
                                        ['docheader', 'docfooter', 'separator'])
         self._counter = itertools.count()
         self._renderitem('docheader', {})
 
     def _showitem(self):
         item = self._item.copy()
         item['index'] = index = next(self._counter)
         if index > 0:
             self._renderitem('separator', {})
         self._renderitem(self._tref, item)
 
     def _renderitem(self, part, item):
         if part not in self._parts:
             return
         ref = self._parts[part]
 
         # TODO: add support for filectx. probably each template keyword or
         # function will have to declare dependent resources. e.g.
         # @templatekeyword(..., requires=('ctx',))
         props = {}
         if 'ctx' in item:
             props.update(templatekw.keywords)
         # explicitly-defined fields precede templatekw
         props.update(item)
         if 'ctx' in item:
             # but template resources must be always available
             props['repo'] = props['ctx'].repo()
             props['revcache'] = {}
         props = pycompat.strkwargs(props)
         g = self._t(ref, **props)
         self._out.write(templater.stringify(g))
 
     def end(self):
         baseformatter.end(self)
         self._renderitem('docfooter', {})
 
 templatespec = collections.namedtuple(r'templatespec',
                                       r'ref tmpl mapfile')
 
 def lookuptemplate(ui, topic, tmpl):
     """Find the template matching the given -T/--template spec 'tmpl'
 
     'tmpl' can be any of the following:
 
      - a literal template (e.g. '{rev}')
      - a map-file name or path (e.g. 'changelog')
      - a reference to [templates] in config file
      - a path to raw template file
 
     A map file defines a stand-alone template environment. If a map file
     selected, all templates defined in the file will be loaded, and the
     template matching the given topic will be rendered. Aliases won't be
     loaded from user config, but from the map file.
 
     If no map file selected, all templates in [templates] section will be
     available as well as aliases in [templatealias].
     """
 
     # looks like a literal template?
     if '{' in tmpl:
         return templatespec('', tmpl, None)
 
     # perhaps a stock style?
     if not os.path.split(tmpl)[0]:
         mapname = (templater.templatepath('map-cmdline.' + tmpl)
                    or templater.templatepath(tmpl))
         if mapname and os.path.isfile(mapname):
             return templatespec(topic, None, mapname)
 
     # perhaps it's a reference to [templates]
     if ui.config('templates', tmpl):
         return templatespec(tmpl, None, None)
 
     if tmpl == 'list':
         ui.write(_("available styles: %s\n") % templater.stylelist())
         raise error.Abort(_("specify a template"))
 
     # perhaps it's a path to a map or a template
     if ('/' in tmpl or '\\' in tmpl) and os.path.isfile(tmpl):
         # is it a mapfile for a style?
         if os.path.basename(tmpl).startswith("map-"):
             return templatespec(topic, None, os.path.realpath(tmpl))
         with util.posixfile(tmpl, 'rb') as f:
             tmpl = f.read()
         return templatespec('', tmpl, None)
 
     # constant string?
     return templatespec('', tmpl, None)
 
 def templatepartsmap(spec, t, partnames):
     """Create a mapping of {part: ref}"""
     partsmap = {spec.ref: spec.ref}  # initial ref must exist in t
     if spec.mapfile:
         partsmap.update((p, p) for p in partnames if p in t)
     elif spec.ref:
         for part in partnames:
             ref = '%s:%s' % (spec.ref, part)  # select config sub-section
             if ref in t:
                 partsmap[part] = ref
     return partsmap
 
 def loadtemplater(ui, spec, resources=None, cache=None):
     """Create a templater from either a literal template or loading from
     a map file"""
     assert not (spec.tmpl and spec.mapfile)
     if spec.mapfile:
         frommapfile = templater.templater.frommapfile
         return frommapfile(spec.mapfile, resources=resources, cache=cache)
     return maketemplater(ui, spec.tmpl, resources=resources, cache=cache)
 
 def maketemplater(ui, tmpl, resources=None, cache=None):
     """Create a templater from a string template 'tmpl'"""
     aliases = ui.configitems('templatealias')
     t = templater.templater(resources=resources, cache=cache, aliases=aliases)
     t.cache.update((k, templater.unquotestring(v))
                    for k, v in ui.configitems('templates'))
     if tmpl:
         t.cache[''] = tmpl
     return t
 
 def templateresources(ui, repo=None):
     """Create a dict of template resources designed for the default templatekw
     and function"""
     return {
         'cache': {},  # for templatekw/funcs to store reusable data
+        'ctx': None,
         'repo': repo,
+        'revcache': None,  # per-ctx cache; set later
         'ui': ui,
     }
 
 def formatter(ui, out, topic, opts):
     template = opts.get("template", "")
     if template == "json":
         return jsonformatter(ui, out, topic, opts)
     elif template == "pickle":
         return pickleformatter(ui, out, topic, opts)
     elif template == "debug":
         return debugformatter(ui, out, topic, opts)
     elif template != "":
         return templateformatter(ui, out, topic, opts)
     # developer config: ui.formatdebug
     elif ui.configbool('ui', 'formatdebug'):
         return debugformatter(ui, out, topic, opts)
     # deprecated config: ui.formatjson
     elif ui.configbool('ui', 'formatjson'):
         return jsonformatter(ui, out, topic, opts)
     return plainformatter(ui, out, topic, opts)
 
 @contextlib.contextmanager
 def openformatter(ui, filename, topic, opts):
     """Create a formatter that writes outputs to the specified file
 
     Must be invoked using the 'with' statement.
     """
     with util.posixfile(filename, 'wb') as out:
         with formatter(ui, out, topic, opts) as fm:
             yield fm
 
 @contextlib.contextmanager
 def _neverending(fm):
     yield fm
 
 def maybereopen(fm, filename, opts):
     """Create a formatter backed by file if filename specified, else return
     the given formatter
 
     Must be invoked using the 'with' statement. This will never call fm.end()
     of the given formatter.
     """
     if filename:
         return openformatter(fm._ui, filename, fm._topic, opts)
     else:
         return _neverending(fm)

mercurial/templater.py

@@ -1,1566 +1,1570 b''
 # templater.py - template expansion for output
 #
 # Copyright 2005, 2006 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, print_function
 
 import os
 import re
 import types
 
 from .i18n import _
 from . import (
     color,
     config,
     encoding,
     error,
     minirst,
     obsutil,
     parser,
     pycompat,
     registrar,
     revset as revsetmod,
     revsetlang,
     scmutil,
     templatefilters,
     templatekw,
     util,
 )
 
 # template parsing
 
 elements = {
     # token-type: binding-strength, primary, prefix, infix, suffix
     "(": (20, None, ("group", 1, ")"), ("func", 1, ")"), None),
     ".": (18, None, None, (".", 18), None),
     "%": (15, None, None, ("%", 15), None),
     "|": (15, None, None, ("|", 15), None),
     "*": (5, None, None, ("*", 5), None),
     "/": (5, None, None, ("/", 5), None),
     "+": (4, None, None, ("+", 4), None),
     "-": (4, None, ("negate", 19), ("-", 4), None),
     "=": (3, None, None, ("keyvalue", 3), None),
     ",": (2, None, None, ("list", 2), None),
     ")": (0, None, None, None, None),
     "integer": (0, "integer", None, None, None),
     "symbol": (0, "symbol", None, None, None),
     "string": (0, "string", None, None, None),
     "template": (0, "template", None, None, None),
     "end": (0, None, None, None, None),
 }
 
 def tokenize(program, start, end, term=None):
     """Parse a template expression into a stream of tokens, which must end
     with term if specified"""
     pos = start
     program = pycompat.bytestr(program)
     while pos < end:
         c = program[pos]
         if c.isspace(): # skip inter-token whitespace
             pass
         elif c in "(=,).%|+-*/": # handle simple operators
             yield (c, None, pos)
         elif c in '"\'': # handle quoted templates
             s = pos + 1
             data, pos = _parsetemplate(program, s, end, c)
             yield ('template', data, s)
             pos -= 1
         elif c == 'r' and program[pos:pos + 2] in ("r'", 'r"'):
             # handle quoted strings
             c = program[pos + 1]
             s = pos = pos + 2
             while pos < end: # find closing quote
                 d = program[pos]
                 if d == '\\': # skip over escaped characters
                     pos += 2
                     continue
                 if d == c:
                     yield ('string', program[s:pos], s)
                     break
                 pos += 1
             else:
                 raise error.ParseError(_("unterminated string"), s)
         elif c.isdigit():
             s = pos
             while pos < end:
                 d = program[pos]
                 if not d.isdigit():
                     break
                 pos += 1
             yield ('integer', program[s:pos], s)
             pos -= 1
         elif (c == '\\' and program[pos:pos + 2] in (r"\'", r'\"')
               or c == 'r' and program[pos:pos + 3] in (r"r\'", r'r\"')):
             # handle escaped quoted strings for compatibility with 2.9.2-3.4,
             # where some of nested templates were preprocessed as strings and
             # then compiled. therefore, \"...\" was allowed. (issue4733)
             #
             # processing flow of _evalifliteral() at 5ab28a2e9962:
             # outer template string    -> stringify()  -> compiletemplate()
             # ------------------------    ------------    ------------------
             # {f("\\\\ {g(\"\\\"\")}"}    \\ {g("\"")}    [r'\\', {g("\"")}]
             #             ~~~~~~~~
             #             escaped quoted string
             if c == 'r':
                 pos += 1
                 token = 'string'
             else:
                 token = 'template'
             quote = program[pos:pos + 2]
             s = pos = pos + 2
             while pos < end: # find closing escaped quote
                 if program.startswith('\\\\\\', pos, end):
                     pos += 4 # skip over double escaped characters
                     continue
                 if program.startswith(quote, pos, end):
                     # interpret as if it were a part of an outer string
                     data = parser.unescapestr(program[s:pos])
                     if token == 'template':
                         data = _parsetemplate(data, 0, len(data))[0]
                     yield (token, data, s)
                     pos += 1
                     break
                 pos += 1
             else:
                 raise error.ParseError(_("unterminated string"), s)
         elif c.isalnum() or c in '_':
             s = pos
             pos += 1
             while pos < end: # find end of symbol
                 d = program[pos]
                 if not (d.isalnum() or d == "_"):
                     break
                 pos += 1
             sym = program[s:pos]
             yield ('symbol', sym, s)
             pos -= 1
         elif c == term:
             yield ('end', None, pos + 1)
             return
         else:
             raise error.ParseError(_("syntax error"), pos)
         pos += 1
     if term:
         raise error.ParseError(_("unterminated template expansion"), start)
     yield ('end', None, pos)
 
 def _parsetemplate(tmpl, start, stop, quote=''):
     r"""
     >>> _parsetemplate(b'foo{bar}"baz', 0, 12)
     ([('string', 'foo'), ('symbol', 'bar'), ('string', '"baz')], 12)
     >>> _parsetemplate(b'foo{bar}"baz', 0, 12, quote=b'"')
     ([('string', 'foo'), ('symbol', 'bar')], 9)
     >>> _parsetemplate(b'foo"{bar}', 0, 9, quote=b'"')
     ([('string', 'foo')], 4)
     >>> _parsetemplate(br'foo\"bar"baz', 0, 12, quote=b'"')
     ([('string', 'foo"'), ('string', 'bar')], 9)
     >>> _parsetemplate(br'foo\\"bar', 0, 10, quote=b'"')
     ([('string', 'foo\\')], 6)
     """
     parsed = []
     sepchars = '{' + quote
     pos = start
     p = parser.parser(elements)
     while pos < stop:
         n = min((tmpl.find(c, pos, stop) for c in sepchars),
                 key=lambda n: (n < 0, n))
         if n < 0:
             parsed.append(('string', parser.unescapestr(tmpl[pos:stop])))
             pos = stop
             break
         c = tmpl[n:n + 1]
         bs = (n - pos) - len(tmpl[pos:n].rstrip('\\'))
         if bs % 2 == 1:
             # escaped (e.g. '\{', '\\\{', but not '\\{')
             parsed.append(('string', parser.unescapestr(tmpl[pos:n - 1]) + c))
             pos = n + 1
             continue
         if n > pos:
             parsed.append(('string', parser.unescapestr(tmpl[pos:n])))
         if c == quote:
             return parsed, n + 1
 
         parseres, pos = p.parse(tokenize(tmpl, n + 1, stop, '}'))
         parsed.append(parseres)
 
     if quote:
         raise error.ParseError(_("unterminated string"), start)
     return parsed, pos
 
 def _unnesttemplatelist(tree):
     """Expand list of templates to node tuple
 
     >>> def f(tree):
     ...     print(pycompat.sysstr(prettyformat(_unnesttemplatelist(tree))))
     >>> f((b'template', []))
     (string '')
     >>> f((b'template', [(b'string', b'foo')]))
     (string 'foo')
     >>> f((b'template', [(b'string', b'foo'), (b'symbol', b'rev')]))
     (template
       (string 'foo')
       (symbol 'rev'))
     >>> f((b'template', [(b'symbol', b'rev')]))  # template(rev) -> str
     (template
       (symbol 'rev'))
     >>> f((b'template', [(b'template', [(b'string', b'foo')])]))
     (string 'foo')
     """
     if not isinstance(tree, tuple):
         return tree
     op = tree[0]
     if op != 'template':
         return (op,) + tuple(_unnesttemplatelist(x) for x in tree[1:])
 
     assert len(tree) == 2
     xs = tuple(_unnesttemplatelist(x) for x in tree[1])
     if not xs:
         return ('string', '')  # empty template ""
     elif len(xs) == 1 and xs[0][0] == 'string':
         return xs[0]  # fast path for string with no template fragment "x"
     else:
         return (op,) + xs
 
 def parse(tmpl):
     """Parse template string into tree"""
     parsed, pos = _parsetemplate(tmpl, 0, len(tmpl))
     assert pos == len(tmpl), 'unquoted template should be consumed'
     return _unnesttemplatelist(('template', parsed))
 
 def _parseexpr(expr):
     """Parse a template expression into tree
 
     >>> _parseexpr(b'"foo"')
     ('string', 'foo')
     >>> _parseexpr(b'foo(bar)')
     ('func', ('symbol', 'foo'), ('symbol', 'bar'))
     >>> _parseexpr(b'foo(')
     Traceback (most recent call last):
       ...
     ParseError: ('not a prefix: end', 4)
     >>> _parseexpr(b'"foo" "bar"')
     Traceback (most recent call last):
       ...
     ParseError: ('invalid token', 7)
     """
     p = parser.parser(elements)
     tree, pos = p.parse(tokenize(expr, 0, len(expr)))
     if pos != len(expr):
         raise error.ParseError(_('invalid token'), pos)
     return _unnesttemplatelist(tree)
 
 def prettyformat(tree):
     return parser.prettyformat(tree, ('integer', 'string', 'symbol'))
 
 def compileexp(exp, context, curmethods):
     """Compile parsed template tree to (func, data) pair"""
     t = exp[0]
     if t in curmethods:
         return curmethods[t](exp, context)
     raise error.ParseError(_("unknown method '%s'") % t)
 
 # template evaluation
 
 def getsymbol(exp):
     if exp[0] == 'symbol':
         return exp[1]
     raise error.ParseError(_("expected a symbol, got '%s'") % exp[0])
 
 def getlist(x):
     if not x:
         return []
     if x[0] == 'list':
         return getlist(x[1]) + [x[2]]
     return [x]
 
 def gettemplate(exp, context):
     """Compile given template tree or load named template from map file;
     returns (func, data) pair"""
     if exp[0] in ('template', 'string'):
         return compileexp(exp, context, methods)
     if exp[0] == 'symbol':
         # unlike runsymbol(), here 'symbol' is always taken as template name
         # even if it exists in mapping. this allows us to override mapping
         # by web templates, e.g. 'changelogtag' is redefined in map file.
         return context._load(exp[1])
     raise error.ParseError(_("expected template specifier"))
 
 def findsymbolicname(arg):
     """Find symbolic name for the given compiled expression; returns None
     if nothing found reliably"""
     while True:
         func, data = arg
         if func is runsymbol:
             return data
         elif func is runfilter:
             arg = data[0]
         else:
             return None
 
 def evalrawexp(context, mapping, arg):
     """Evaluate given argument as a bare template object which may require
     further processing (such as folding generator of strings)"""
     func, data = arg
     return func(context, mapping, data)
 
 def evalfuncarg(context, mapping, arg):
     """Evaluate given argument as value type"""
     thing = evalrawexp(context, mapping, arg)
     thing = templatekw.unwrapvalue(thing)
     # evalrawexp() may return string, generator of strings or arbitrary object
     # such as date tuple, but filter does not want generator.
     if isinstance(thing, types.GeneratorType):
         thing = stringify(thing)
     return thing
 
 def evalboolean(context, mapping, arg):
     """Evaluate given argument as boolean, but also takes boolean literals"""
     func, data = arg
     if func is runsymbol:
         thing = func(context, mapping, data, default=None)
         if thing is None:
             # not a template keyword, takes as a boolean literal
             thing = util.parsebool(data)
     else:
         thing = func(context, mapping, data)
     thing = templatekw.unwrapvalue(thing)
     if isinstance(thing, bool):
         return thing
     # other objects are evaluated as strings, which means 0 is True, but
     # empty dict/list should be False as they are expected to be ''
     return bool(stringify(thing))
 
 def evalinteger(context, mapping, arg, err=None):
     v = evalfuncarg(context, mapping, arg)
     try:
         return int(v)
     except (TypeError, ValueError):
         raise error.ParseError(err or _('not an integer'))
 
 def evalstring(context, mapping, arg):
     return stringify(evalrawexp(context, mapping, arg))
 
 def evalstringliteral(context, mapping, arg):
     """Evaluate given argument as string template, but returns symbol name
     if it is unknown"""
     func, data = arg
     if func is runsymbol:
         thing = func(context, mapping, data, default=data)
     else:
         thing = func(context, mapping, data)
     return stringify(thing)
 
 _evalfuncbytype = {
     bool: evalboolean,
     bytes: evalstring,
     int: evalinteger,
 }
 
 def evalastype(context, mapping, arg, typ):
     """Evaluate given argument and coerce its type"""
     try:
         f = _evalfuncbytype[typ]
     except KeyError:
         raise error.ProgrammingError('invalid type specified: %r' % typ)
     return f(context, mapping, arg)
 
 def runinteger(context, mapping, data):
     return int(data)
 
 def runstring(context, mapping, data):
     return data
 
 def _recursivesymbolblocker(key):
     def showrecursion(**args):
         raise error.Abort(_("recursive reference '%s' in template") % key)
     return showrecursion
 
 def _runrecursivesymbol(context, mapping, key):
     raise error.Abort(_("recursive reference '%s' in template") % key)
 
 def runsymbol(context, mapping, key, default=''):
     v = context.symbol(mapping, key)
     if v is None:
         # put poison to cut recursion. we can't move this to parsing phase
         # because "x = {x}" is allowed if "x" is a keyword. (issue4758)
         safemapping = mapping.copy()
         safemapping[key] = _recursivesymbolblocker(key)
         try:
             v = context.process(key, safemapping)
         except TemplateNotFound:
             v = default
     if callable(v):
         # TODO: templatekw functions will be updated to take (context, mapping)
         # pair instead of **props
         props = context._resources.copy()
         props.update(mapping)
         return v(**props)
     return v
 
 def buildtemplate(exp, context):
     ctmpl = [compileexp(e, context, methods) for e in exp[1:]]
     return (runtemplate, ctmpl)
 
 def runtemplate(context, mapping, template):
     for arg in template:
         yield evalrawexp(context, mapping, arg)
 
 def buildfilter(exp, context):
     n = getsymbol(exp[2])
     if n in context._filters:
         filt = context._filters[n]
         arg = compileexp(exp[1], context, methods)
         return (runfilter, (arg, filt))
     if n in funcs:
         f = funcs[n]
         args = _buildfuncargs(exp[1], context, methods, n, f._argspec)
         return (f, args)
     raise error.ParseError(_("unknown function '%s'") % n)
 
 def runfilter(context, mapping, data):
     arg, filt = data
     thing = evalfuncarg(context, mapping, arg)
     try:
         return filt(thing)
     except (ValueError, AttributeError, TypeError):
         sym = findsymbolicname(arg)
         if sym:
             msg = (_("template filter '%s' is not compatible with keyword '%s'")
                    % (pycompat.sysbytes(filt.__name__), sym))
         else:
             msg = (_("incompatible use of template filter '%s'")
                    % pycompat.sysbytes(filt.__name__))
         raise error.Abort(msg)
 
 def buildmap(exp, context):
     darg = compileexp(exp[1], context, methods)
     targ = gettemplate(exp[2], context)
     return (runmap, (darg, targ))
 
 def runmap(context, mapping, data):
     darg, targ = data
     d = evalrawexp(context, mapping, darg)
     if util.safehasattr(d, 'itermaps'):
         diter = d.itermaps()
     else:
         try:
             diter = iter(d)
         except TypeError:
             sym = findsymbolicname(darg)
             if sym:
                 raise error.ParseError(_("keyword '%s' is not iterable") % sym)
             else:
                 raise error.ParseError(_("%r is not iterable") % d)
 
     for i, v in enumerate(diter):
         lm = mapping.copy()
         lm['index'] = i
         if isinstance(v, dict):
             lm.update(v)
             lm['originalnode'] = mapping.get('node')
             yield evalrawexp(context, lm, targ)
         else:
             # v is not an iterable of dicts, this happen when 'key'
             # has been fully expanded already and format is useless.
             # If so, return the expanded value.
             yield v
 
 def buildmember(exp, context):
     darg = compileexp(exp[1], context, methods)
     memb = getsymbol(exp[2])
     return (runmember, (darg, memb))
 
 def runmember(context, mapping, data):
     darg, memb = data
     d = evalrawexp(context, mapping, darg)
     if util.safehasattr(d, 'tomap'):
         lm = mapping.copy()
         lm.update(d.tomap())
         return runsymbol(context, lm, memb)
     if util.safehasattr(d, 'get'):
         return _getdictitem(d, memb)
 
     sym = findsymbolicname(darg)
     if sym:
         raise error.ParseError(_("keyword '%s' has no member") % sym)
     else:
         raise error.ParseError(_("%r has no member") % d)
 
 def buildnegate(exp, context):
     arg = compileexp(exp[1], context, exprmethods)
     return (runnegate, arg)
 
 def runnegate(context, mapping, data):
     data = evalinteger(context, mapping, data,
                        _('negation needs an integer argument'))
     return -data
 
 def buildarithmetic(exp, context, func):
     left = compileexp(exp[1], context, exprmethods)
     right = compileexp(exp[2], context, exprmethods)
     return (runarithmetic, (func, left, right))
 
 def runarithmetic(context, mapping, data):
     func, left, right = data
     left = evalinteger(context, mapping, left,
                        _('arithmetic only defined on integers'))
     right = evalinteger(context, mapping, right,
                         _('arithmetic only defined on integers'))
     try:
         return func(left, right)
     except ZeroDivisionError:
         raise error.Abort(_('division by zero is not defined'))
 
 def buildfunc(exp, context):
     n = getsymbol(exp[1])
     if n in funcs:
         f = funcs[n]
         args = _buildfuncargs(exp[2], context, exprmethods, n, f._argspec)
         return (f, args)
     if n in context._filters:
         args = _buildfuncargs(exp[2], context, exprmethods, n, argspec=None)
         if len(args) != 1:
             raise error.ParseError(_("filter %s expects one argument") % n)
         f = context._filters[n]
         return (runfilter, (args[0], f))
     raise error.ParseError(_("unknown function '%s'") % n)
 
 def _buildfuncargs(exp, context, curmethods, funcname, argspec):
     """Compile parsed tree of function arguments into list or dict of
     (func, data) pairs
 
     >>> context = engine(lambda t: (runsymbol, t))
     >>> def fargs(expr, argspec):
     ...     x = _parseexpr(expr)
     ...     n = getsymbol(x[1])
     ...     return _buildfuncargs(x[2], context, exprmethods, n, argspec)
     >>> list(fargs(b'a(l=1, k=2)', b'k l m').keys())
     ['l', 'k']
     >>> args = fargs(b'a(opts=1, k=2)', b'**opts')
     >>> list(args.keys()), list(args[b'opts'].keys())
     (['opts'], ['opts', 'k'])
     """
     def compiledict(xs):
         return util.sortdict((k, compileexp(x, context, curmethods))
                              for k, x in xs.iteritems())
     def compilelist(xs):
         return [compileexp(x, context, curmethods) for x in xs]
 
     if not argspec:
         # filter or function with no argspec: return list of positional args
         return compilelist(getlist(exp))
 
     # function with argspec: return dict of named args
     _poskeys, varkey, _keys, optkey = argspec = parser.splitargspec(argspec)
     treeargs = parser.buildargsdict(getlist(exp), funcname, argspec,
                                     keyvaluenode='keyvalue', keynode='symbol')
     compargs = util.sortdict()
     if varkey:
         compargs[varkey] = compilelist(treeargs.pop(varkey))
     if optkey:
         compargs[optkey] = compiledict(treeargs.pop(optkey))
     compargs.update(compiledict(treeargs))
     return compargs
 
 def buildkeyvaluepair(exp, content):
     raise error.ParseError(_("can't use a key-value pair in this context"))
 
 # dict of template built-in functions
 funcs = {}
 
 templatefunc = registrar.templatefunc(funcs)
 
 @templatefunc('date(date[, fmt])')
 def date(context, mapping, args):
     """Format a date. See :hg:`help dates` for formatting
     strings. The default is a Unix date format, including the timezone:
     "Mon Sep 04 15:13:13 2006 0700"."""
     if not (1 <= len(args) <= 2):
         # i18n: "date" is a keyword
         raise error.ParseError(_("date expects one or two arguments"))
 
     date = evalfuncarg(context, mapping, args[0])
     fmt = None
     if len(args) == 2:
         fmt = evalstring(context, mapping, args[1])
     try:
         if fmt is None:
             return util.datestr(date)
         else:
             return util.datestr(date, fmt)
     except (TypeError, ValueError):
         # i18n: "date" is a keyword
         raise error.ParseError(_("date expects a date information"))
 
 @templatefunc('dict([[key=]value...])', argspec='*args **kwargs')
 def dict_(context, mapping, args):
     """Construct a dict from key-value pairs. A key may be omitted if
     a value expression can provide an unambiguous name."""
     data = util.sortdict()
 
     for v in args['args']:
         k = findsymbolicname(v)
         if not k:
             raise error.ParseError(_('dict key cannot be inferred'))
         if k in data or k in args['kwargs']:
             raise error.ParseError(_("duplicated dict key '%s' inferred") % k)
         data[k] = evalfuncarg(context, mapping, v)
 
     data.update((k, evalfuncarg(context, mapping, v))
                 for k, v in args['kwargs'].iteritems())
     return templatekw.hybriddict(data)
 
 @templatefunc('diff([includepattern [, excludepattern]])')
 def diff(context, mapping, args):
     """Show a diff, optionally
     specifying files to include or exclude."""
     if len(args) > 2:
         # i18n: "diff" is a keyword
         raise error.ParseError(_("diff expects zero, one, or two arguments"))
 
     def getpatterns(i):
         if i < len(args):
             s = evalstring(context, mapping, args[i]).strip()
             if s:
                 return [s]
         return []
 
     ctx = context.resource(mapping, 'ctx')
     chunks = ctx.diff(match=ctx.match([], getpatterns(0), getpatterns(1)))
 
     return ''.join(chunks)
 
 @templatefunc('extdata(source)', argspec='source')
 def extdata(context, mapping, args):
     """Show a text read from the specified extdata source. (EXPERIMENTAL)"""
     if 'source' not in args:
         # i18n: "extdata" is a keyword
         raise error.ParseError(_('extdata expects one argument'))
 
     source = evalstring(context, mapping, args['source'])
     cache = context.resource(mapping, 'cache').setdefault('extdata', {})
     ctx = context.resource(mapping, 'ctx')
     if source in cache:
         data = cache[source]
     else:
         data = cache[source] = scmutil.extdatasource(ctx.repo(), source)
     return data.get(ctx.rev(), '')
 
 @templatefunc('files(pattern)')
 def files(context, mapping, args):
     """All files of the current changeset matching the pattern. See
     :hg:`help patterns`."""
     if not len(args) == 1:
         # i18n: "files" is a keyword
         raise error.ParseError(_("files expects one argument"))
 
     raw = evalstring(context, mapping, args[0])
     ctx = context.resource(mapping, 'ctx')
     m = ctx.match([raw])
     files = list(ctx.matches(m))
     # TODO: pass (context, mapping) pair to keyword function
     props = context._resources.copy()
     props.update(mapping)
     return templatekw.showlist("file", files, props)
 
 @templatefunc('fill(text[, width[, initialident[, hangindent]]])')
 def fill(context, mapping, args):
     """Fill many
     paragraphs with optional indentation. See the "fill" filter."""
     if not (1 <= len(args) <= 4):
         # i18n: "fill" is a keyword
         raise error.ParseError(_("fill expects one to four arguments"))
 
     text = evalstring(context, mapping, args[0])
     width = 76
     initindent = ''
     hangindent = ''
     if 2 <= len(args) <= 4:
         width = evalinteger(context, mapping, args[1],
                             # i18n: "fill" is a keyword
                             _("fill expects an integer width"))
         try:
             initindent = evalstring(context, mapping, args[2])
             hangindent = evalstring(context, mapping, args[3])
         except IndexError:
             pass
 
     return templatefilters.fill(text, width, initindent, hangindent)
 
 @templatefunc('formatnode(node)')
 def formatnode(context, mapping, args):
     """Obtain the preferred form of a changeset hash. (DEPRECATED)"""
     if len(args) != 1:
         # i18n: "formatnode" is a keyword
         raise error.ParseError(_("formatnode expects one argument"))
 
     ui = context.resource(mapping, 'ui')
     node = evalstring(context, mapping, args[0])
     if ui.debugflag:
         return node
     return templatefilters.short(node)
 
 @templatefunc('pad(text, width[, fillchar=\' \'[, left=False]])',
               argspec='text width fillchar left')
 def pad(context, mapping, args):
     """Pad text with a
     fill character."""
     if 'text' not in args or 'width' not in args:
         # i18n: "pad" is a keyword
         raise error.ParseError(_("pad() expects two to four arguments"))
 
     width = evalinteger(context, mapping, args['width'],
                         # i18n: "pad" is a keyword
                         _("pad() expects an integer width"))
 
     text = evalstring(context, mapping, args['text'])
 
     left = False
     fillchar = ' '
     if 'fillchar' in args:
         fillchar = evalstring(context, mapping, args['fillchar'])
         if len(color.stripeffects(fillchar)) != 1:
             # i18n: "pad" is a keyword
             raise error.ParseError(_("pad() expects a single fill character"))
     if 'left' in args:
         left = evalboolean(context, mapping, args['left'])
 
     fillwidth = width - encoding.colwidth(color.stripeffects(text))
     if fillwidth <= 0:
         return text
     if left:
         return fillchar * fillwidth + text
     else:
         return text + fillchar * fillwidth
 
 @templatefunc('indent(text, indentchars[, firstline])')
 def indent(context, mapping, args):
     """Indents all non-empty lines
     with the characters given in the indentchars string. An optional
     third parameter will override the indent for the first line only
     if present."""
     if not (2 <= len(args) <= 3):
         # i18n: "indent" is a keyword
         raise error.ParseError(_("indent() expects two or three arguments"))
 
     text = evalstring(context, mapping, args[0])
     indent = evalstring(context, mapping, args[1])
 
     if len(args) == 3:
         firstline = evalstring(context, mapping, args[2])
     else:
         firstline = indent
 
     # the indent function doesn't indent the first line, so we do it here
     return templatefilters.indent(firstline + text, indent)
 
 @templatefunc('get(dict, key)')
 def get(context, mapping, args):
     """Get an attribute/key from an object. Some keywords
     are complex types. This function allows you to obtain the value of an
     attribute on these types."""
     if len(args) != 2:
         # i18n: "get" is a keyword
         raise error.ParseError(_("get() expects two arguments"))
 
     dictarg = evalfuncarg(context, mapping, args[0])
     if not util.safehasattr(dictarg, 'get'):
         # i18n: "get" is a keyword
         raise error.ParseError(_("get() expects a dict as first argument"))
 
     key = evalfuncarg(context, mapping, args[1])
     return _getdictitem(dictarg, key)
 
 def _getdictitem(dictarg, key):
     val = dictarg.get(key)
     if val is None:
         return
     return templatekw.wraphybridvalue(dictarg, key, val)
 
 @templatefunc('if(expr, then[, else])')
 def if_(context, mapping, args):
     """Conditionally execute based on the result of
     an expression."""
     if not (2 <= len(args) <= 3):
         # i18n: "if" is a keyword
         raise error.ParseError(_("if expects two or three arguments"))
 
     test = evalboolean(context, mapping, args[0])
     if test:
         yield evalrawexp(context, mapping, args[1])
     elif len(args) == 3:
         yield evalrawexp(context, mapping, args[2])
 
 @templatefunc('ifcontains(needle, haystack, then[, else])')
 def ifcontains(context, mapping, args):
     """Conditionally execute based
     on whether the item "needle" is in "haystack"."""
     if not (3 <= len(args) <= 4):
         # i18n: "ifcontains" is a keyword
         raise error.ParseError(_("ifcontains expects three or four arguments"))
 
     haystack = evalfuncarg(context, mapping, args[1])
     try:
         needle = evalastype(context, mapping, args[0],
                             getattr(haystack, 'keytype', None) or bytes)
         found = (needle in haystack)
     except error.ParseError:
         found = False
 
     if found:
         yield evalrawexp(context, mapping, args[2])
     elif len(args) == 4:
         yield evalrawexp(context, mapping, args[3])
 
 @templatefunc('ifeq(expr1, expr2, then[, else])')
 def ifeq(context, mapping, args):
     """Conditionally execute based on
     whether 2 items are equivalent."""
     if not (3 <= len(args) <= 4):
         # i18n: "ifeq" is a keyword
         raise error.ParseError(_("ifeq expects three or four arguments"))
 
     test = evalstring(context, mapping, args[0])
     match = evalstring(context, mapping, args[1])
     if test == match:
         yield evalrawexp(context, mapping, args[2])
     elif len(args) == 4:
         yield evalrawexp(context, mapping, args[3])
 
 @templatefunc('join(list, sep)')
 def join(context, mapping, args):
     """Join items in a list with a delimiter."""
     if not (1 <= len(args) <= 2):
         # i18n: "join" is a keyword
         raise error.ParseError(_("join expects one or two arguments"))
 
     # TODO: perhaps this should be evalfuncarg(), but it can't because hgweb
     # abuses generator as a keyword that returns a list of dicts.
     joinset = evalrawexp(context, mapping, args[0])
     joinset = templatekw.unwrapvalue(joinset)
     joinfmt = getattr(joinset, 'joinfmt', pycompat.identity)
     joiner = " "
     if len(args) > 1:
         joiner = evalstring(context, mapping, args[1])
 
     first = True
     for x in joinset:
         if first:
             first = False
         else:
             yield joiner
         yield joinfmt(x)
 
 @templatefunc('label(label, expr)')
 def label(context, mapping, args):
     """Apply a label to generated content. Content with
     a label applied can result in additional post-processing, such as
     automatic colorization."""
     if len(args) != 2:
         # i18n: "label" is a keyword
         raise error.ParseError(_("label expects two arguments"))
 
     ui = context.resource(mapping, 'ui')
     thing = evalstring(context, mapping, args[1])
     # preserve unknown symbol as literal so effects like 'red', 'bold',
     # etc. don't need to be quoted
     label = evalstringliteral(context, mapping, args[0])
 
     return ui.label(thing, label)
 
 @templatefunc('latesttag([pattern])')
 def latesttag(context, mapping, args):
     """The global tags matching the given pattern on the
     most recent globally tagged ancestor of this changeset.
     If no such tags exist, the "{tag}" template resolves to
     the string "null"."""
     if len(args) > 1:
         # i18n: "latesttag" is a keyword
         raise error.ParseError(_("latesttag expects at most one argument"))
 
     pattern = None
     if len(args) == 1:
         pattern = evalstring(context, mapping, args[0])
 
     # TODO: pass (context, mapping) pair to keyword function
     props = context._resources.copy()
     props.update(mapping)
     return templatekw.showlatesttags(pattern, **pycompat.strkwargs(props))
 
 @templatefunc('localdate(date[, tz])')
 def localdate(context, mapping, args):
     """Converts a date to the specified timezone.
     The default is local date."""
     if not (1 <= len(args) <= 2):
         # i18n: "localdate" is a keyword
         raise error.ParseError(_("localdate expects one or two arguments"))
 
     date = evalfuncarg(context, mapping, args[0])
     try:
         date = util.parsedate(date)
     except AttributeError:  # not str nor date tuple
         # i18n: "localdate" is a keyword
         raise error.ParseError(_("localdate expects a date information"))
     if len(args) >= 2:
         tzoffset = None
         tz = evalfuncarg(context, mapping, args[1])
         if isinstance(tz, str):
             tzoffset, remainder = util.parsetimezone(tz)
             if remainder:
                 tzoffset = None
         if tzoffset is None:
             try:
                 tzoffset = int(tz)
             except (TypeError, ValueError):
                 # i18n: "localdate" is a keyword
                 raise error.ParseError(_("localdate expects a timezone"))
     else:
         tzoffset = util.makedate()[1]
     return (date[0], tzoffset)
 
 @templatefunc('max(iterable)')
 def max_(context, mapping, args, **kwargs):
     """Return the max of an iterable"""
     if len(args) != 1:
         # i18n: "max" is a keyword
         raise error.ParseError(_("max expects one argument"))
 
     iterable = evalfuncarg(context, mapping, args[0])
     try:
         x = max(iterable)
     except (TypeError, ValueError):
         # i18n: "max" is a keyword
         raise error.ParseError(_("max first argument should be an iterable"))
     return templatekw.wraphybridvalue(iterable, x, x)
 
 @templatefunc('min(iterable)')
 def min_(context, mapping, args, **kwargs):
     """Return the min of an iterable"""
     if len(args) != 1:
         # i18n: "min" is a keyword
         raise error.ParseError(_("min expects one argument"))
 
     iterable = evalfuncarg(context, mapping, args[0])
     try:
         x = min(iterable)
     except (TypeError, ValueError):
         # i18n: "min" is a keyword
         raise error.ParseError(_("min first argument should be an iterable"))
     return templatekw.wraphybridvalue(iterable, x, x)
 
 @templatefunc('mod(a, b)')
 def mod(context, mapping, args):
     """Calculate a mod b such that a / b + a mod b == a"""
     if not len(args) == 2:
         # i18n: "mod" is a keyword
         raise error.ParseError(_("mod expects two arguments"))
 
     func = lambda a, b: a % b
     return runarithmetic(context, mapping, (func, args[0], args[1]))
 
 @templatefunc('obsfateoperations(markers)')
 def obsfateoperations(context, mapping, args):
     """Compute obsfate related information based on markers (EXPERIMENTAL)"""
     if len(args) != 1:
         # i18n: "obsfateoperations" is a keyword
         raise error.ParseError(_("obsfateoperations expects one argument"))
 
     markers = evalfuncarg(context, mapping, args[0])
 
     try:
         data = obsutil.markersoperations(markers)
         return templatekw.hybridlist(data, name='operation')
     except (TypeError, KeyError):
         # i18n: "obsfateoperations" is a keyword
         errmsg = _("obsfateoperations first argument should be an iterable")
         raise error.ParseError(errmsg)
 
 @templatefunc('obsfatedate(markers)')
 def obsfatedate(context, mapping, args):
     """Compute obsfate related information based on markers (EXPERIMENTAL)"""
     if len(args) != 1:
         # i18n: "obsfatedate" is a keyword
         raise error.ParseError(_("obsfatedate expects one argument"))
 
     markers = evalfuncarg(context, mapping, args[0])
 
     try:
         data = obsutil.markersdates(markers)
         return templatekw.hybridlist(data, name='date', fmt='%d %d')
     except (TypeError, KeyError):
         # i18n: "obsfatedate" is a keyword
         errmsg = _("obsfatedate first argument should be an iterable")
         raise error.ParseError(errmsg)
 
 @templatefunc('obsfateusers(markers)')
 def obsfateusers(context, mapping, args):
     """Compute obsfate related information based on markers (EXPERIMENTAL)"""
     if len(args) != 1:
         # i18n: "obsfateusers" is a keyword
         raise error.ParseError(_("obsfateusers expects one argument"))
 
     markers = evalfuncarg(context, mapping, args[0])
 
     try:
         data = obsutil.markersusers(markers)
         return templatekw.hybridlist(data, name='user')
     except (TypeError, KeyError, ValueError):
         # i18n: "obsfateusers" is a keyword
         msg = _("obsfateusers first argument should be an iterable of "
                 "obsmakers")
         raise error.ParseError(msg)
 
 @templatefunc('obsfateverb(successors, markers)')
 def obsfateverb(context, mapping, args):
     """Compute obsfate related information based on successors (EXPERIMENTAL)"""
     if len(args) != 2:
         # i18n: "obsfateverb" is a keyword
         raise error.ParseError(_("obsfateverb expects two arguments"))
 
     successors = evalfuncarg(context, mapping, args[0])
     markers = evalfuncarg(context, mapping, args[1])
 
     try:
         return obsutil.obsfateverb(successors, markers)
     except TypeError:
         # i18n: "obsfateverb" is a keyword
         errmsg = _("obsfateverb first argument should be countable")
         raise error.ParseError(errmsg)
 
 @templatefunc('relpath(path)')
 def relpath(context, mapping, args):
     """Convert a repository-absolute path into a filesystem path relative to
     the current working directory."""
     if len(args) != 1:
         # i18n: "relpath" is a keyword
         raise error.ParseError(_("relpath expects one argument"))
 
     repo = context.resource(mapping, 'ctx').repo()
     path = evalstring(context, mapping, args[0])
     return repo.pathto(path)
 
 @templatefunc('revset(query[, formatargs...])')
 def revset(context, mapping, args):
     """Execute a revision set query. See
     :hg:`help revset`."""
     if not len(args) > 0:
         # i18n: "revset" is a keyword
         raise error.ParseError(_("revset expects one or more arguments"))
 
     raw = evalstring(context, mapping, args[0])
     ctx = context.resource(mapping, 'ctx')
     repo = ctx.repo()
 
     def query(expr):
         m = revsetmod.match(repo.ui, expr, repo=repo)
         return m(repo)
 
     if len(args) > 1:
         formatargs = [evalfuncarg(context, mapping, a) for a in args[1:]]
         revs = query(revsetlang.formatspec(raw, *formatargs))
         revs = list(revs)
     else:
         cache = context.resource(mapping, 'cache')
         revsetcache = cache.setdefault("revsetcache", {})
         if raw in revsetcache:
             revs = revsetcache[raw]
         else:
             revs = query(raw)
             revs = list(revs)
             revsetcache[raw] = revs
 
     # TODO: pass (context, mapping) pair to keyword function
     props = context._resources.copy()
     props.update(mapping)
     return templatekw.showrevslist("revision", revs,
                                    **pycompat.strkwargs(props))
 
 @templatefunc('rstdoc(text, style)')
 def rstdoc(context, mapping, args):
     """Format reStructuredText."""
     if len(args) != 2:
         # i18n: "rstdoc" is a keyword
         raise error.ParseError(_("rstdoc expects two arguments"))
 
     text = evalstring(context, mapping, args[0])
     style = evalstring(context, mapping, args[1])
 
     return minirst.format(text, style=style, keep=['verbose'])
 
 @templatefunc('separate(sep, args)', argspec='sep *args')
 def separate(context, mapping, args):
     """Add a separator between non-empty arguments."""
     if 'sep' not in args:
         # i18n: "separate" is a keyword
         raise error.ParseError(_("separate expects at least one argument"))
 
     sep = evalstring(context, mapping, args['sep'])
     first = True
     for arg in args['args']:
         argstr = evalstring(context, mapping, arg)
         if not argstr:
             continue
         if first:
             first = False
         else:
             yield sep
         yield argstr
 
 @templatefunc('shortest(node, minlength=4)')
 def shortest(context, mapping, args):
     """Obtain the shortest representation of
     a node."""
     if not (1 <= len(args) <= 2):
         # i18n: "shortest" is a keyword
         raise error.ParseError(_("shortest() expects one or two arguments"))
 
     node = evalstring(context, mapping, args[0])
 
     minlength = 4
     if len(args) > 1:
         minlength = evalinteger(context, mapping, args[1],
                                 # i18n: "shortest" is a keyword
                                 _("shortest() expects an integer minlength"))
 
     # _partialmatch() of filtered changelog could take O(len(repo)) time,
     # which would be unacceptably slow. so we look for hash collision in
     # unfiltered space, which means some hashes may be slightly longer.
     cl = context.resource(mapping, 'ctx')._repo.unfiltered().changelog
     return cl.shortest(node, minlength)
 
 @templatefunc('strip(text[, chars])')
 def strip(context, mapping, args):
     """Strip characters from a string. By default,
     strips all leading and trailing whitespace."""
     if not (1 <= len(args) <= 2):
         # i18n: "strip" is a keyword
         raise error.ParseError(_("strip expects one or two arguments"))
 
     text = evalstring(context, mapping, args[0])
     if len(args) == 2:
         chars = evalstring(context, mapping, args[1])
         return text.strip(chars)
     return text.strip()
 
 @templatefunc('sub(pattern, replacement, expression)')
 def sub(context, mapping, args):
     """Perform text substitution
     using regular expressions."""
     if len(args) != 3:
         # i18n: "sub" is a keyword
         raise error.ParseError(_("sub expects three arguments"))
 
     pat = evalstring(context, mapping, args[0])
     rpl = evalstring(context, mapping, args[1])
     src = evalstring(context, mapping, args[2])
     try:
         patre = re.compile(pat)
     except re.error:
         # i18n: "sub" is a keyword
         raise error.ParseError(_("sub got an invalid pattern: %s") % pat)
     try:
         yield patre.sub(rpl, src)
     except re.error:
         # i18n: "sub" is a keyword
         raise error.ParseError(_("sub got an invalid replacement: %s") % rpl)
 
 @templatefunc('startswith(pattern, text)')
 def startswith(context, mapping, args):
     """Returns the value from the "text" argument
     if it begins with the content from the "pattern" argument."""
     if len(args) != 2:
         # i18n: "startswith" is a keyword
         raise error.ParseError(_("startswith expects two arguments"))
 
     patn = evalstring(context, mapping, args[0])
     text = evalstring(context, mapping, args[1])
     if text.startswith(patn):
         return text
     return ''
 
 @templatefunc('word(number, text[, separator])')
 def word(context, mapping, args):
     """Return the nth word from a string."""
     if not (2 <= len(args) <= 3):
         # i18n: "word" is a keyword
         raise error.ParseError(_("word expects two or three arguments, got %d")
                                % len(args))
 
     num = evalinteger(context, mapping, args[0],
                       # i18n: "word" is a keyword
                       _("word expects an integer index"))
     text = evalstring(context, mapping, args[1])
     if len(args) == 3:
         splitter = evalstring(context, mapping, args[2])
     else:
         splitter = None
 
     tokens = text.split(splitter)
     if num >= len(tokens) or num < -len(tokens):
         return ''
     else:
         return tokens[num]
 
 # methods to interpret function arguments or inner expressions (e.g. {_(x)})
 exprmethods = {
     "integer": lambda e, c: (runinteger, e[1]),
     "string": lambda e, c: (runstring, e[1]),
     "symbol": lambda e, c: (runsymbol, e[1]),
     "template": buildtemplate,
     "group": lambda e, c: compileexp(e[1], c, exprmethods),
     ".": buildmember,
     "|": buildfilter,
     "%": buildmap,
     "func": buildfunc,
     "keyvalue": buildkeyvaluepair,
     "+": lambda e, c: buildarithmetic(e, c, lambda a, b: a + b),
     "-": lambda e, c: buildarithmetic(e, c, lambda a, b: a - b),
     "negate": buildnegate,
     "*": lambda e, c: buildarithmetic(e, c, lambda a, b: a * b),
     "/": lambda e, c: buildarithmetic(e, c, lambda a, b: a // b),
     }
 
 # methods to interpret top-level template (e.g. {x}, {x|_}, {x % "y"})
 methods = exprmethods.copy()
 methods["integer"] = exprmethods["symbol"]  # '{1}' as variable
 
 class _aliasrules(parser.basealiasrules):
     """Parsing and expansion rule set of template aliases"""
     _section = _('template alias')
     _parse = staticmethod(_parseexpr)
 
     @staticmethod
     def _trygetfunc(tree):
         """Return (name, args) if tree is func(...) or ...|filter; otherwise
         None"""
         if tree[0] == 'func' and tree[1][0] == 'symbol':
             return tree[1][1], getlist(tree[2])
         if tree[0] == '|' and tree[2][0] == 'symbol':
             return tree[2][1], [tree[1]]
 
 def expandaliases(tree, aliases):
     """Return new tree of aliases are expanded"""
     aliasmap = _aliasrules.buildmap(aliases)
     return _aliasrules.expand(aliasmap, tree)
 
 # template engine
 
 stringify = templatefilters.stringify
 
 def _flatten(thing):
     '''yield a single stream from a possibly nested set of iterators'''
     thing = templatekw.unwraphybrid(thing)
     if isinstance(thing, bytes):
         yield thing
     elif isinstance(thing, str):
         # We can only hit this on Python 3, and it's here to guard
         # against infinite recursion.
         raise error.ProgrammingError('Mercurial IO including templates is done'
                                      ' with bytes, not strings')
     elif thing is None:
         pass
     elif not util.safehasattr(thing, '__iter__'):
         yield pycompat.bytestr(thing)
     else:
         for i in thing:
             i = templatekw.unwraphybrid(i)
             if isinstance(i, bytes):
                 yield i
             elif i is None:
                 pass
             elif not util.safehasattr(i, '__iter__'):
                 yield pycompat.bytestr(i)
             else:
                 for j in _flatten(i):
                     yield j
 
 def unquotestring(s):
     '''unwrap quotes if any; otherwise returns unmodified string'''
     if len(s) < 2 or s[0] not in "'\"" or s[0] != s[-1]:
         return s
     return s[1:-1]
 
 class engine(object):
     '''template expansion engine.
 
     template expansion works like this. a map file contains key=value
     pairs. if value is quoted, it is treated as string. otherwise, it
     is treated as name of template file.
 
     templater is asked to expand a key in map. it looks up key, and
     looks for strings like this: {foo}. it expands {foo} by looking up
     foo in map, and substituting it. expansion is recursive: it stops
     when there is no more {foo} to replace.
 
     expansion also allows formatting and filtering.
 
     format uses key to expand each item in list. syntax is
     {key%format}.
 
     filter uses function to transform value. syntax is
     {key|filter1|filter2|...}.'''
 
     def __init__(self, loader, filters=None, defaults=None, resources=None,
                  aliases=()):
         self._loader = loader
         if filters is None:
             filters = {}
         self._filters = filters
         if defaults is None:
             defaults = {}
         if resources is None:
             resources = {}
         self._defaults = defaults
         self._resources = resources
         self._aliasmap = _aliasrules.buildmap(aliases)
         self._cache = {}  # key: (func, data)
 
     def symbol(self, mapping, key):
         """Resolve symbol to value or function; None if nothing found"""
-        v = mapping.get(key)
+        v = None
+        if key not in self._resources:
+            v = mapping.get(key)
         if v is None:
             v = self._defaults.get(key)
         return v
 
     def resource(self, mapping, key):
         """Return internal data (e.g. cache) used for keyword/function
         evaluation"""
-        v = mapping.get(key)
+        v = None
+        if key in self._resources:
+            v = mapping.get(key)
         if v is None:
             v = self._resources.get(key)
         if v is None:
-            raise KeyError
+            raise error.Abort(_('template resource not available: %s') % key)
         return v
 
     def _load(self, t):
         '''load, parse, and cache a template'''
         if t not in self._cache:
             # put poison to cut recursion while compiling 't'
             self._cache[t] = (_runrecursivesymbol, t)
             try:
                 x = parse(self._loader(t))
                 if self._aliasmap:
                     x = _aliasrules.expand(self._aliasmap, x)
                 self._cache[t] = compileexp(x, self, methods)
             except: # re-raises
                 del self._cache[t]
                 raise
         return self._cache[t]
 
     def process(self, t, mapping):
         '''Perform expansion. t is name of map element to expand.
         mapping contains added elements for use during expansion. Is a
         generator.'''
         func, data = self._load(t)
         return _flatten(func(self, mapping, data))
 
 engines = {'default': engine}
 
 def stylelist():
     paths = templatepaths()
     if not paths:
         return _('no templates found, try `hg debuginstall` for more info')
     dirlist = os.listdir(paths[0])
     stylelist = []
     for file in dirlist:
         split = file.split(".")
         if split[-1] in ('orig', 'rej'):
             continue
         if split[0] == "map-cmdline":
             stylelist.append(split[1])
     return ", ".join(sorted(stylelist))
 
 def _readmapfile(mapfile):
     """Load template elements from the given map file"""
     if not os.path.exists(mapfile):
         raise error.Abort(_("style '%s' not found") % mapfile,
                           hint=_("available styles: %s") % stylelist())
 
     base = os.path.dirname(mapfile)
     conf = config.config(includepaths=templatepaths())
     conf.read(mapfile, remap={'': 'templates'})
 
     cache = {}
     tmap = {}
     aliases = []
 
     val = conf.get('templates', '__base__')
     if val and val[0] not in "'\"":
         # treat as a pointer to a base class for this style
         path = util.normpath(os.path.join(base, val))
 
         # fallback check in template paths
         if not os.path.exists(path):
             for p in templatepaths():
                 p2 = util.normpath(os.path.join(p, val))
                 if os.path.isfile(p2):
                     path = p2
                     break
                 p3 = util.normpath(os.path.join(p2, "map"))
                 if os.path.isfile(p3):
                     path = p3
                     break
 
         cache, tmap, aliases = _readmapfile(path)
 
     for key, val in conf['templates'].items():
         if not val:
             raise error.ParseError(_('missing value'),
                                    conf.source('templates', key))
         if val[0] in "'\"":
             if val[0] != val[-1]:
                 raise error.ParseError(_('unmatched quotes'),
                                        conf.source('templates', key))
             cache[key] = unquotestring(val)
         elif key != '__base__':
             val = 'default', val
             if ':' in val[1]:
                 val = val[1].split(':', 1)
             tmap[key] = val[0], os.path.join(base, val[1])
     aliases.extend(conf['templatealias'].items())
     return cache, tmap, aliases
 
 class TemplateNotFound(error.Abort):
     pass
 
 class templater(object):
 
     def __init__(self, filters=None, defaults=None, resources=None,
                  cache=None, aliases=(), minchunk=1024, maxchunk=65536):
         '''set up template engine.
         filters is dict of functions. each transforms a value into another.
         defaults is dict of default map definitions.
         resources is dict of internal data (e.g. cache), which are inaccessible
         from user template.
         aliases is list of alias (name, replacement) pairs.
         '''
         if filters is None:
             filters = {}
         if defaults is None:
             defaults = {}
         if resources is None:
             resources = {}
         if cache is None:
             cache = {}
         self.cache = cache.copy()
         self.map = {}
         self.filters = templatefilters.filters.copy()
         self.filters.update(filters)
         self.defaults = defaults
         self._resources = {'templ': self}
         self._resources.update(resources)
         self._aliases = aliases
         self.minchunk, self.maxchunk = minchunk, maxchunk
         self.ecache = {}
 
     @classmethod
     def frommapfile(cls, mapfile, filters=None, defaults=None, resources=None,
                     cache=None, minchunk=1024, maxchunk=65536):
         """Create templater from the specified map file"""
         t = cls(filters, defaults, resources, cache, [], minchunk, maxchunk)
         cache, tmap, aliases = _readmapfile(mapfile)
         t.cache.update(cache)
         t.map = tmap
         t._aliases = aliases
         return t
 
     def __contains__(self, key):
         return key in self.cache or key in self.map
 
     def load(self, t):
         '''Get the template for the given template name. Use a local cache.'''
         if t not in self.cache:
             try:
                 self.cache[t] = util.readfile(self.map[t][1])
             except KeyError as inst:
                 raise TemplateNotFound(_('"%s" not in template map') %
                                        inst.args[0])
             except IOError as inst:
                 raise IOError(inst.args[0], _('template file %s: %s') %
                               (self.map[t][1], inst.args[1]))
         return self.cache[t]
 
     def render(self, mapping):
         """Render the default unnamed template and return result as string"""
         mapping = pycompat.strkwargs(mapping)
         return stringify(self('', **mapping))
 
     def __call__(self, t, **mapping):
         mapping = pycompat.byteskwargs(mapping)
         ttype = t in self.map and self.map[t][0] or 'default'
         if ttype not in self.ecache:
             try:
                 ecls = engines[ttype]
             except KeyError:
                 raise error.Abort(_('invalid template engine: %s') % ttype)
             self.ecache[ttype] = ecls(self.load, self.filters, self.defaults,
                                       self._resources, self._aliases)
         proc = self.ecache[ttype]
 
         stream = proc.process(t, mapping)
         if self.minchunk:
             stream = util.increasingchunks(stream, min=self.minchunk,
                                            max=self.maxchunk)
         return stream
 
 def templatepaths():
     '''return locations used for template files.'''
     pathsrel = ['templates']
     paths = [os.path.normpath(os.path.join(util.datapath, f))
              for f in pathsrel]
     return [p for p in paths if os.path.isdir(p)]
 
 def templatepath(name):
     '''return location of template file. returns None if not found.'''
     for p in templatepaths():
         f = os.path.join(p, name)
         if os.path.exists(f):
             return f
     return None
 
 def stylemap(styles, paths=None):
     """Return path to mapfile for a given style.
 
     Searches mapfile in the following locations:
     1. templatepath/style/map
     2. templatepath/map-style
     3. templatepath/map
     """
 
     if paths is None:
         paths = templatepaths()
     elif isinstance(paths, str):
         paths = [paths]
 
     if isinstance(styles, str):
         styles = [styles]
 
     for style in styles:
         # only plain name is allowed to honor template paths
         if (not style
             or style in (os.curdir, os.pardir)
             or pycompat.ossep in style
             or pycompat.osaltsep and pycompat.osaltsep in style):
             continue
         locations = [os.path.join(style, 'map'), 'map-' + style]
         locations.append('map')
 
         for path in paths:
             for location in locations:
                 mapfile = os.path.join(path, location)
                 if os.path.isfile(mapfile):
                     return style, mapfile
 
     raise RuntimeError("No hgweb templates found in %r" % paths)
 
 def loadfunction(ui, extname, registrarobj):
     """Load template function from specified registrarobj
     """
     for name, func in registrarobj._table.iteritems():
         funcs[name] = func
 
 # tell hggettext to extract docstrings from these functions:
 i18nfunctions = funcs.values()

tests/test-command-template.t

@@ -1,4711 +1,4717 b''
   $ hg init a
   $ cd a
   $ echo a > a
   $ hg add a
   $ echo line 1 > b
   $ echo line 2 >> b
   $ hg commit -l b -d '1000000 0' -u 'User Name <user@hostname>'
 
   $ hg add b
   $ echo other 1 > c
   $ echo other 2 >> c
   $ echo >> c
   $ echo other 3 >> c
   $ hg commit -l c -d '1100000 0' -u 'A. N. Other <other@place>'
 
   $ hg add c
   $ hg commit -m 'no person' -d '1200000 0' -u 'other@place'
   $ echo c >> c
   $ hg commit -m 'no user, no domain' -d '1300000 0' -u 'person'
 
   $ echo foo > .hg/branch
   $ hg commit -m 'new branch' -d '1400000 0' -u 'person'
 
   $ hg co -q 3
   $ echo other 4 >> d
   $ hg add d
   $ hg commit -m 'new head' -d '1500000 0' -u 'person'
 
   $ hg merge -q foo
   $ hg commit -m 'merge' -d '1500001 0' -u 'person'
 
 Test arithmetic operators have the right precedence:
 
   $ hg log -l 1 -T '{date(date, "%Y") + 5 * 10} {date(date, "%Y") - 2 * 3}\n'
   2020 1964
   $ hg log -l 1 -T '{date(date, "%Y") * 5 + 10} {date(date, "%Y") * 3 - 2}\n'
   9860 5908
 
 Test division:
 
   $ hg debugtemplate -r0 -v '{5 / 2} {mod(5, 2)}\n'
   (template
     (/
       (integer '5')
       (integer '2'))
     (string ' ')
     (func
       (symbol 'mod')
       (list
         (integer '5')
         (integer '2')))
     (string '\n'))
   2 1
   $ hg debugtemplate -r0 -v '{5 / -2} {mod(5, -2)}\n'
   (template
     (/
       (integer '5')
       (negate
         (integer '2')))
     (string ' ')
     (func
       (symbol 'mod')
       (list
         (integer '5')
         (negate
           (integer '2'))))
     (string '\n'))
   -3 -1
   $ hg debugtemplate -r0 -v '{-5 / 2} {mod(-5, 2)}\n'
   (template
     (/
       (negate
         (integer '5'))
       (integer '2'))
     (string ' ')
     (func
       (symbol 'mod')
       (list
         (negate
           (integer '5'))
         (integer '2')))
     (string '\n'))
   -3 1
   $ hg debugtemplate -r0 -v '{-5 / -2} {mod(-5, -2)}\n'
   (template
     (/
       (negate
         (integer '5'))
       (negate
         (integer '2')))
     (string ' ')
     (func
       (symbol 'mod')
       (list
         (negate
           (integer '5'))
         (negate
           (integer '2'))))
     (string '\n'))
   2 -1
 
 Filters bind closer than arithmetic:
 
   $ hg debugtemplate -r0 -v '{revset(".")|count - 1}\n'
   (template
     (-
       (|
         (func
           (symbol 'revset')
           (string '.'))
         (symbol 'count'))
       (integer '1'))
     (string '\n'))
   0
 
 But negate binds closer still:
 
   $ hg debugtemplate -r0 -v '{1-3|stringify}\n'
   (template
     (-
       (integer '1')
       (|
         (integer '3')
         (symbol 'stringify')))
     (string '\n'))
   hg: parse error: arithmetic only defined on integers
   [255]
   $ hg debugtemplate -r0 -v '{-3|stringify}\n'
   (template
     (|
       (negate
         (integer '3'))
       (symbol 'stringify'))
     (string '\n'))
   -3
 
 Filters bind as close as map operator:
 
   $ hg debugtemplate -r0 -v '{desc|splitlines % "{line}\n"}'
   (template
     (%
       (|
         (symbol 'desc')
         (symbol 'splitlines'))
       (template
         (symbol 'line')
         (string '\n'))))
   line 1
   line 2
 
 Keyword arguments:
 
   $ hg debugtemplate -r0 -v '{foo=bar|baz}'
   (template
     (keyvalue
       (symbol 'foo')
       (|
         (symbol 'bar')
         (symbol 'baz'))))
   hg: parse error: can't use a key-value pair in this context
   [255]
 
   $ hg debugtemplate '{pad("foo", width=10, left=true)}\n'
          foo
 
 Call function which takes named arguments by filter syntax:
 
   $ hg debugtemplate '{" "|separate}'
   $ hg debugtemplate '{("not", "an", "argument", "list")|separate}'
   hg: parse error: unknown method 'list'
   [255]
 
 Second branch starting at nullrev:
 
   $ hg update null
   0 files updated, 0 files merged, 4 files removed, 0 files unresolved
   $ echo second > second
   $ hg add second
   $ hg commit -m second -d '1000000 0' -u 'User Name <user@hostname>'
   created new head
 
   $ echo third > third
   $ hg add third
   $ hg mv second fourth
   $ hg commit -m third -d "2020-01-01 10:01"
 
   $ hg log --template '{join(file_copies, ",\n")}\n' -r .
   fourth (second)
   $ hg log -T '{file_copies % "{source} -> {name}\n"}' -r .
   second -> fourth
   $ hg log -T '{rev} {ifcontains("fourth", file_copies, "t", "f")}\n' -r .:7
   8 t
   7 f
 
 Working-directory revision has special identifiers, though they are still
 experimental:
 
   $ hg log -r 'wdir()' -T '{rev}:{node}\n'
   2147483647:ffffffffffffffffffffffffffffffffffffffff
 
 Some keywords are invalid for working-directory revision, but they should
 never cause crash:
 
   $ hg log -r 'wdir()' -T '{manifest}\n'
   
 
 Internal resources shouldn't be exposed (issue5699):
 
-  $ hg log -r. -T '{cache}{repo}{templ}{ui}'
+  $ hg log -r. -T '{cache}{ctx}{repo}{revcache}{templ}{ui}'
+
+Never crash on internal resource not available:
+
+  $ hg --cwd .. debugtemplate '{"c0bebeef"|shortest}\n'
+  abort: template resource not available: ctx
+  [255]
 
 Quoting for ui.logtemplate
 
   $ hg tip --config "ui.logtemplate={rev}\n"
   8
   $ hg tip --config "ui.logtemplate='{rev}\n'"
   8
   $ hg tip --config 'ui.logtemplate="{rev}\n"'
   8
   $ hg tip --config 'ui.logtemplate=n{rev}\n'
   n8
 
 Make sure user/global hgrc does not affect tests
 
   $ echo '[ui]' > .hg/hgrc
   $ echo 'logtemplate =' >> .hg/hgrc
   $ echo 'style =' >> .hg/hgrc
 
 Add some simple styles to settings
 
   $ cat <<'EOF' >> .hg/hgrc
   > [templates]
   > simple = "{rev}\n"
   > simple2 = {rev}\n
   > rev = "should not precede {rev} keyword\n"
   > EOF
 
   $ hg log -l1 -Tsimple
   8
   $ hg log -l1 -Tsimple2
   8
   $ hg log -l1 -Trev
   should not precede 8 keyword
   $ hg log -l1 -T '{simple}'
   8
 
 Map file shouldn't see user templates:
 
   $ cat <<EOF > tmpl
   > changeset = 'nothing expanded:{simple}\n'
   > EOF
   $ hg log -l1 --style ./tmpl
   nothing expanded:
 
 Test templates and style maps in files:
 
   $ echo "{rev}" > tmpl
   $ hg log -l1 -T./tmpl
   8
   $ hg log -l1 -Tblah/blah
   blah/blah (no-eol)
 
   $ printf 'changeset = "{rev}\\n"\n' > map-simple
   $ hg log -l1 -T./map-simple
   8
 
  a map file may have [templates] and [templatealias] sections:
 
   $ cat <<'EOF' > map-simple
   > [templates]
   > changeset = "{a}\n"
   > [templatealias]
   > a = rev
   > EOF
   $ hg log -l1 -T./map-simple
   8
 
  so it can be included in hgrc
 
   $ cat <<'EOF' > myhgrc
   > %include map-simple
   > [templates]
   > foo = "{changeset}"
   > EOF
   $ HGRCPATH=./myhgrc hg log -l1 -Tfoo
   8
   $ HGRCPATH=./myhgrc hg log -l1 -T'{a}\n'
   8
 
 Test template map inheritance
 
   $ echo "__base__ = map-cmdline.default" > map-simple
   $ printf 'cset = "changeset: ***{rev}***\\n"\n' >> map-simple
   $ hg log -l1 -T./map-simple
   changeset: ***8***
   tag:         tip
   user:        test
   date:        Wed Jan 01 10:01:00 2020 +0000
   summary:     third
   
 
 Test docheader, docfooter and separator in template map
 
   $ cat <<'EOF' > map-myjson
   > docheader = '\{\n'
   > docfooter = '\n}\n'
   > separator = ',\n'
   > changeset = ' {dict(rev, node|short)|json}'
   > EOF
   $ hg log -l2 -T./map-myjson
   {
    {"node": "95c24699272e", "rev": 8},
    {"node": "29114dbae42b", "rev": 7}
   }
 
 Test docheader, docfooter and separator in [templates] section
 
   $ cat <<'EOF' >> .hg/hgrc
   > [templates]
   > myjson = ' {dict(rev, node|short)|json}'
   > myjson:docheader = '\{\n'
   > myjson:docfooter = '\n}\n'
   > myjson:separator = ',\n'
   > :docheader = 'should not be selected as a docheader for literal templates\n'
   > EOF
   $ hg log -l2 -Tmyjson
   {
    {"node": "95c24699272e", "rev": 8},
    {"node": "29114dbae42b", "rev": 7}
   }
   $ hg log -l1 -T'{rev}\n'
   8
 
 Template should precede style option
 
   $ hg log -l1 --style default -T '{rev}\n'
   8
 
 Add a commit with empty description, to ensure that the templates
 below will omit the description line.
 
   $ echo c >> c
   $ hg add c
   $ hg commit -qm ' '
 
 Default style is like normal output. Phases style should be the same
 as default style, except for extra phase lines.
 
   $ hg log > log.out
   $ hg log --style default > style.out
   $ cmp log.out style.out || diff -u log.out style.out
   $ hg log -T phases > phases.out
   $ diff -U 0 log.out phases.out | egrep -v '^---|^\+\+\+|^@@'
   +phase:       draft
   +phase:       draft
   +phase:       draft
   +phase:       draft
   +phase:       draft
   +phase:       draft
   +phase:       draft
   +phase:       draft
   +phase:       draft
   +phase:       draft
 
   $ hg log -v > log.out
   $ hg log -v --style default > style.out
   $ cmp log.out style.out || diff -u log.out style.out
   $ hg log -v -T phases > phases.out
   $ diff -U 0 log.out phases.out | egrep -v '^---|^\+\+\+|^@@'
   +phase:       draft
   +phase:       draft
   +phase:       draft
   +phase:       draft
   +phase:       draft
   +phase:       draft
   +phase:       draft
   +phase:       draft
   +phase:       draft
   +phase:       draft
 
   $ hg log -q > log.out
   $ hg log -q --style default > style.out
   $ cmp log.out style.out || diff -u log.out style.out
   $ hg log -q -T phases > phases.out
   $ cmp log.out phases.out || diff -u log.out phases.out
 
   $ hg log --debug > log.out
   $ hg log --debug --style default > style.out
   $ cmp log.out style.out || diff -u log.out style.out
   $ hg log --debug -T phases > phases.out
   $ cmp log.out phases.out || diff -u log.out phases.out
 
 Default style of working-directory revision should also be the same (but
 date may change while running tests):
 
   $ hg log -r 'wdir()' | sed 's|^date:.*|date:|' > log.out
   $ hg log -r 'wdir()' --style default | sed 's|^date:.*|date:|' > style.out
   $ cmp log.out style.out || diff -u log.out style.out
 
   $ hg log -r 'wdir()' -v | sed 's|^date:.*|date:|' > log.out
   $ hg log -r 'wdir()' -v --style default | sed 's|^date:.*|date:|' > style.out
   $ cmp log.out style.out || diff -u log.out style.out
 
   $ hg log -r 'wdir()' -q > log.out
   $ hg log -r 'wdir()' -q --style default > style.out
   $ cmp log.out style.out || diff -u log.out style.out
 
   $ hg log -r 'wdir()' --debug | sed 's|^date:.*|date:|' > log.out
   $ hg log -r 'wdir()' --debug --style default \
   > | sed 's|^date:.*|date:|' > style.out
   $ cmp log.out style.out || diff -u log.out style.out
 
 Default style should also preserve color information (issue2866):
 
   $ cp $HGRCPATH $HGRCPATH-bak
   $ cat <<EOF >> $HGRCPATH
   > [extensions]
   > color=
   > EOF
 
   $ hg --color=debug log > log.out
   $ hg --color=debug log --style default > style.out
   $ cmp log.out style.out || diff -u log.out style.out
   $ hg --color=debug log -T phases > phases.out
   $ diff -U 0 log.out phases.out | egrep -v '^---|^\+\+\+|^@@'
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
 
   $ hg --color=debug -v log > log.out
   $ hg --color=debug -v log --style default > style.out
   $ cmp log.out style.out || diff -u log.out style.out
   $ hg --color=debug -v log -T phases > phases.out
   $ diff -U 0 log.out phases.out | egrep -v '^---|^\+\+\+|^@@'
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
   +[log.phase|phase:       draft]
 
   $ hg --color=debug -q log > log.out
   $ hg --color=debug -q log --style default > style.out
   $ cmp log.out style.out || diff -u log.out style.out
   $ hg --color=debug -q log -T phases > phases.out
   $ cmp log.out phases.out || diff -u log.out phases.out
 
   $ hg --color=debug --debug log > log.out
   $ hg --color=debug --debug log --style default > style.out
   $ cmp log.out style.out || diff -u log.out style.out
   $ hg --color=debug --debug log -T phases > phases.out
   $ cmp log.out phases.out || diff -u log.out phases.out
 
   $ mv $HGRCPATH-bak $HGRCPATH
 
 Remove commit with empty commit message, so as to not pollute further
 tests.
 
   $ hg --config extensions.strip= strip -q .
 
 Revision with no copies (used to print a traceback):
 
   $ hg tip -v --template '\n'
   
 
 Compact style works:
 
   $ hg log -Tcompact
   8[tip]   95c24699272e   2020-01-01 10:01 +0000   test
     third
   
   7:-1   29114dbae42b   1970-01-12 13:46 +0000   user
     second
   
   6:5,4   d41e714fe50d   1970-01-18 08:40 +0000   person
     merge
   
   5:3   13207e5a10d9   1970-01-18 08:40 +0000   person
     new head
   
   4   bbe44766e73d   1970-01-17 04:53 +0000   person
     new branch
   
   3   10e46f2dcbf4   1970-01-16 01:06 +0000   person
     no user, no domain
   
   2   97054abb4ab8   1970-01-14 21:20 +0000   other
     no person
   
   1   b608e9d1a3f0   1970-01-13 17:33 +0000   other
     other 1
   
   0   1e4e1b8f71e0   1970-01-12 13:46 +0000   user
     line 1
   
 
   $ hg log -v --style compact
   8[tip]   95c24699272e   2020-01-01 10:01 +0000   test
     third
   
   7:-1   29114dbae42b   1970-01-12 13:46 +0000   User Name <user@hostname>
     second
   
   6:5,4   d41e714fe50d   1970-01-18 08:40 +0000   person
     merge
   
   5:3   13207e5a10d9   1970-01-18 08:40 +0000   person
     new head
   
   4   bbe44766e73d   1970-01-17 04:53 +0000   person
     new branch
   
   3   10e46f2dcbf4   1970-01-16 01:06 +0000   person
     no user, no domain
   
   2   97054abb4ab8   1970-01-14 21:20 +0000   other@place
     no person
   
   1   b608e9d1a3f0   1970-01-13 17:33 +0000   A. N. Other <other@place>
     other 1
   other 2
   
   other 3
   
   0   1e4e1b8f71e0   1970-01-12 13:46 +0000   User Name <user@hostname>
     line 1
   line 2
   
 
   $ hg log --debug --style compact
   8[tip]:7,-1   95c24699272e   2020-01-01 10:01 +0000   test
     third
   
   7:-1,-1   29114dbae42b   1970-01-12 13:46 +0000   User Name <user@hostname>
     second
   
   6:5,4   d41e714fe50d   1970-01-18 08:40 +0000   person
     merge
   
   5:3,-1   13207e5a10d9   1970-01-18 08:40 +0000   person
     new head
   
   4:3,-1   bbe44766e73d   1970-01-17 04:53 +0000   person
     new branch
   
   3:2,-1   10e46f2dcbf4   1970-01-16 01:06 +0000   person
     no user, no domain
   
   2:1,-1   97054abb4ab8   1970-01-14 21:20 +0000   other@place
     no person
   
   1:0,-1   b608e9d1a3f0   1970-01-13 17:33 +0000   A. N. Other <other@place>
     other 1
   other 2
   
   other 3
   
   0:-1,-1   1e4e1b8f71e0   1970-01-12 13:46 +0000   User Name <user@hostname>
     line 1
   line 2
   
 
 Test xml styles:
 
   $ hg log --style xml -r 'not all()'
   <?xml version="1.0"?>
   <log>
   </log>
 
   $ hg log --style xml
   <?xml version="1.0"?>
   <log>
   <logentry revision="8" node="95c24699272ef57d062b8bccc32c878bf841784a">
   <tag>tip</tag>
   <author email="test">test</author>
   <date>2020-01-01T10:01:00+00:00</date>
   <msg xml:space="preserve">third</msg>
   </logentry>
   <logentry revision="7" node="29114dbae42b9f078cf2714dbe3a86bba8ec7453">
   <parent revision="-1" node="0000000000000000000000000000000000000000" />
   <author email="user@hostname">User Name</author>
   <date>1970-01-12T13:46:40+00:00</date>
   <msg xml:space="preserve">second</msg>
   </logentry>
   <logentry revision="6" node="d41e714fe50d9e4a5f11b4d595d543481b5f980b">
   <parent revision="5" node="13207e5a10d9fd28ec424934298e176197f2c67f" />
   <parent revision="4" node="bbe44766e73d5f11ed2177f1838de10c53ef3e74" />
   <author email="person">person</author>
   <date>1970-01-18T08:40:01+00:00</date>
   <msg xml:space="preserve">merge</msg>
   </logentry>
   <logentry revision="5" node="13207e5a10d9fd28ec424934298e176197f2c67f">
   <parent revision="3" node="10e46f2dcbf4823578cf180f33ecf0b957964c47" />
   <author email="person">person</author>
   <date>1970-01-18T08:40:00+00:00</date>
   <msg xml:space="preserve">new head</msg>
   </logentry>
   <logentry revision="4" node="bbe44766e73d5f11ed2177f1838de10c53ef3e74">
   <branch>foo</branch>
   <author email="person">person</author>
   <date>1970-01-17T04:53:20+00:00</date>
   <msg xml:space="preserve">new branch</msg>
   </logentry>
   <logentry revision="3" node="10e46f2dcbf4823578cf180f33ecf0b957964c47">
   <author email="person">person</author>
   <date>1970-01-16T01:06:40+00:00</date>
   <msg xml:space="preserve">no user, no domain</msg>
   </logentry>
   <logentry revision="2" node="97054abb4ab824450e9164180baf491ae0078465">
   <author email="other@place">other</author>
   <date>1970-01-14T21:20:00+00:00</date>
   <msg xml:space="preserve">no person</msg>
   </logentry>
   <logentry revision="1" node="b608e9d1a3f0273ccf70fb85fd6866b3482bf965">
   <author email="other@place">A. N. Other</author>
   <date>1970-01-13T17:33:20+00:00</date>
   <msg xml:space="preserve">other 1
   other 2
   
   other 3</msg>
   </logentry>
   <logentry revision="0" node="1e4e1b8f71e05681d422154f5421e385fec3454f">
   <author email="user@hostname">User Name</author>
   <date>1970-01-12T13:46:40+00:00</date>
   <msg xml:space="preserve">line 1
   line 2</msg>
   </logentry>
   </log>
 
   $ hg log -v --style xml
   <?xml version="1.0"?>
   <log>
   <logentry revision="8" node="95c24699272ef57d062b8bccc32c878bf841784a">
   <tag>tip</tag>
   <author email="test">test</author>
   <date>2020-01-01T10:01:00+00:00</date>
   <msg xml:space="preserve">third</msg>
   <paths>
   <path action="A">fourth</path>
   <path action="A">third</path>
   <path action="R">second</path>
   </paths>
   <copies>
   <copy source="second">fourth</copy>
   </copies>
   </logentry>
   <logentry revision="7" node="29114dbae42b9f078cf2714dbe3a86bba8ec7453">
   <parent revision="-1" node="0000000000000000000000000000000000000000" />
   <author email="user@hostname">User Name</author>
   <date>1970-01-12T13:46:40+00:00</date>
   <msg xml:space="preserve">second</msg>
   <paths>
   <path action="A">second</path>
   </paths>
   </logentry>
   <logentry revision="6" node="d41e714fe50d9e4a5f11b4d595d543481b5f980b">
   <parent revision="5" node="13207e5a10d9fd28ec424934298e176197f2c67f" />
   <parent revision="4" node="bbe44766e73d5f11ed2177f1838de10c53ef3e74" />
   <author email="person">person</author>
   <date>1970-01-18T08:40:01+00:00</date>
   <msg xml:space="preserve">merge</msg>
   <paths>
   </paths>
   </logentry>
   <logentry revision="5" node="13207e5a10d9fd28ec424934298e176197f2c67f">
   <parent revision="3" node="10e46f2dcbf4823578cf180f33ecf0b957964c47" />
   <author email="person">person</author>
   <date>1970-01-18T08:40:00+00:00</date>
   <msg xml:space="preserve">new head</msg>
   <paths>
   <path action="A">d</path>
   </paths>
   </logentry>
   <logentry revision="4" node="bbe44766e73d5f11ed2177f1838de10c53ef3e74">
   <branch>foo</branch>
   <author email="person">person</author>
   <date>1970-01-17T04:53:20+00:00</date>
   <msg xml:space="preserve">new branch</msg>
   <paths>
   </paths>
   </logentry>
   <logentry revision="3" node="10e46f2dcbf4823578cf180f33ecf0b957964c47">
   <author email="person">person</author>
   <date>1970-01-16T01:06:40+00:00</date>
   <msg xml:space="preserve">no user, no domain</msg>
   <paths>
   <path action="M">c</path>
   </paths>
   </logentry>
   <logentry revision="2" node="97054abb4ab824450e9164180baf491ae0078465">
   <author email="other@place">other</author>
   <date>1970-01-14T21:20:00+00:00</date>
   <msg xml:space="preserve">no person</msg>
   <paths>
   <path action="A">c</path>
   </paths>
   </logentry>
   <logentry revision="1" node="b608e9d1a3f0273ccf70fb85fd6866b3482bf965">
   <author email="other@place">A. N. Other</author>
   <date>1970-01-13T17:33:20+00:00</date>
   <msg xml:space="preserve">other 1
   other 2
   
   other 3</msg>
   <paths>
   <path action="A">b</path>
   </paths>
   </logentry>
   <logentry revision="0" node="1e4e1b8f71e05681d422154f5421e385fec3454f">
   <author email="user@hostname">User Name</author>
   <date>1970-01-12T13:46:40+00:00</date>
   <msg xml:space="preserve">line 1
   line 2</msg>
   <paths>
   <path action="A">a</path>
   </paths>
   </logentry>
   </log>
 
   $ hg log --debug --style xml
   <?xml version="1.0"?>
   <log>
   <logentry revision="8" node="95c24699272ef57d062b8bccc32c878bf841784a">
   <tag>tip</tag>
   <parent revision="7" node="29114dbae42b9f078cf2714dbe3a86bba8ec7453" />
   <parent revision="-1" node="0000000000000000000000000000000000000000" />
   <author email="test">test</author>
   <date>2020-01-01T10:01:00+00:00</date>
   <msg xml:space="preserve">third</msg>
   <paths>
   <path action="A">fourth</path>
   <path action="A">third</path>
   <path action="R">second</path>
   </paths>
   <copies>
   <copy source="second">fourth</copy>
   </copies>
   <extra key="branch">default</extra>
   </logentry>
   <logentry revision="7" node="29114dbae42b9f078cf2714dbe3a86bba8ec7453">
   <parent revision="-1" node="0000000000000000000000000000000000000000" />
   <parent revision="-1" node="0000000000000000000000000000000000000000" />
   <author email="user@hostname">User Name</author>
   <date>1970-01-12T13:46:40+00:00</date>
   <msg xml:space="preserve">second</msg>
   <paths>
   <path action="A">second</path>
   </paths>
   <extra key="branch">default</extra>
   </logentry>
   <logentry revision="6" node="d41e714fe50d9e4a5f11b4d595d543481b5f980b">
   <parent revision="5" node="13207e5a10d9fd28ec424934298e176197f2c67f" />
   <parent revision="4" node="bbe44766e73d5f11ed2177f1838de10c53ef3e74" />
   <author email="person">person</author>
   <date>1970-01-18T08:40:01+00:00</date>
   <msg xml:space="preserve">merge</msg>
   <paths>
   </paths>
   <extra key="branch">default</extra>
   </logentry>
   <logentry revision="5" node="13207e5a10d9fd28ec424934298e176197f2c67f">
   <parent revision="3" node="10e46f2dcbf4823578cf180f33ecf0b957964c47" />
   <parent revision="-1" node="0000000000000000000000000000000000000000" />
   <author email="person">person</author>
   <date>1970-01-18T08:40:00+00:00</date>
   <msg xml:space="preserve">new head</msg>
   <paths>
   <path action="A">d</path>
   </paths>
   <extra key="branch">default</extra>
   </logentry>
   <logentry revision="4" node="bbe44766e73d5f11ed2177f1838de10c53ef3e74">
   <branch>foo</branch>
   <parent revision="3" node="10e46f2dcbf4823578cf180f33ecf0b957964c47" />
   <parent revision="-1" node="0000000000000000000000000000000000000000" />
   <author email="person">person</author>
   <date>1970-01-17T04:53:20+00:00</date>
   <msg xml:space="preserve">new branch</msg>
   <paths>
   </paths>
   <extra key="branch">foo</extra>
   </logentry>
   <logentry revision="3" node="10e46f2dcbf4823578cf180f33ecf0b957964c47">
   <parent revision="2" node="97054abb4ab824450e9164180baf491ae0078465" />
   <parent revision="-1" node="0000000000000000000000000000000000000000" />
   <author email="person">person</author>
   <date>1970-01-16T01:06:40+00:00</date>
   <msg xml:space="preserve">no user, no domain</msg>
   <paths>
   <path action="M">c</path>
   </paths>
   <extra key="branch">default</extra>
   </logentry>
   <logentry revision="2" node="97054abb4ab824450e9164180baf491ae0078465">
   <parent revision="1" node="b608e9d1a3f0273ccf70fb85fd6866b3482bf965" />
   <parent revision="-1" node="0000000000000000000000000000000000000000" />
   <author email="other@place">other</author>
   <date>1970-01-14T21:20:00+00:00</date>
   <msg xml:space="preserve">no person</msg>
   <paths>
   <path action="A">c</path>
   </paths>
   <extra key="branch">default</extra>
   </logentry>
   <logentry revision="1" node="b608e9d1a3f0273ccf70fb85fd6866b3482bf965">
   <parent revision="0" node="1e4e1b8f71e05681d422154f5421e385fec3454f" />
   <parent revision="-1" node="0000000000000000000000000000000000000000" />
   <author email="other@place">A. N. Other</author>
   <date>1970-01-13T17:33:20+00:00</date>
   <msg xml:space="preserve">other 1
   other 2
   
   other 3</msg>
   <paths>
   <path action="A">b</path>
   </paths>
   <extra key="branch">default</extra>
   </logentry>
   <logentry revision="0" node="1e4e1b8f71e05681d422154f5421e385fec3454f">
   <parent revision="-1" node="0000000000000000000000000000000000000000" />
   <parent revision="-1" node="0000000000000000000000000000000000000000" />
   <author email="user@hostname">User Name</author>
   <date>1970-01-12T13:46:40+00:00</date>
   <msg xml:space="preserve">line 1
   line 2</msg>
   <paths>
   <path action="A">a</path>
   </paths>
   <extra key="branch">default</extra>
   </logentry>
   </log>
 
 
 Test JSON style:
 
   $ hg log -k nosuch -Tjson
   []
 
   $ hg log -qr . -Tjson
   [
    {
     "rev": 8,
     "node": "95c24699272ef57d062b8bccc32c878bf841784a"
    }
   ]
 
   $ hg log -vpr . -Tjson --stat
   [
    {
     "rev": 8,
     "node": "95c24699272ef57d062b8bccc32c878bf841784a",
     "branch": "default",
     "phase": "draft",
     "user": "test",
     "date": [1577872860, 0],
     "desc": "third",
     "bookmarks": [],
     "tags": ["tip"],
     "parents": ["29114dbae42b9f078cf2714dbe3a86bba8ec7453"],
     "files": ["fourth", "second", "third"],
     "diffstat": " fourth |  1 +\n second |  1 -\n third  |  1 +\n 3 files changed, 2 insertions(+), 1 deletions(-)\n",
     "diff": "diff -r 29114dbae42b -r 95c24699272e fourth\n--- /dev/null\tThu Jan 01 00:00:00 1970 +0000\n+++ b/fourth\tWed Jan 01 10:01:00 2020 +0000\n@@ -0,0 +1,1 @@\n+second\ndiff -r 29114dbae42b -r 95c24699272e second\n--- a/second\tMon Jan 12 13:46:40 1970 +0000\n+++ /dev/null\tThu Jan 01 00:00:00 1970 +0000\n@@ -1,1 +0,0 @@\n-second\ndiff -r 29114dbae42b -r 95c24699272e third\n--- /dev/null\tThu Jan 01 00:00:00 1970 +0000\n+++ b/third\tWed Jan 01 10:01:00 2020 +0000\n@@ -0,0 +1,1 @@\n+third\n"
    }
   ]
 
 honor --git but not format-breaking diffopts
   $ hg --config diff.noprefix=True log --git -vpr . -Tjson
   [
    {
     "rev": 8,
     "node": "95c24699272ef57d062b8bccc32c878bf841784a",
     "branch": "default",
     "phase": "draft",
     "user": "test",
     "date": [1577872860, 0],
     "desc": "third",
     "bookmarks": [],
     "tags": ["tip"],
     "parents": ["29114dbae42b9f078cf2714dbe3a86bba8ec7453"],
     "files": ["fourth", "second", "third"],
     "diff": "diff --git a/second b/fourth\nrename from second\nrename to fourth\ndiff --git a/third b/third\nnew file mode 100644\n--- /dev/null\n+++ b/third\n@@ -0,0 +1,1 @@\n+third\n"
    }
   ]
 
   $ hg log -T json
   [
    {
     "rev": 8,
     "node": "95c24699272ef57d062b8bccc32c878bf841784a",
     "branch": "default",
     "phase": "draft",
     "user": "test",
     "date": [1577872860, 0],
     "desc": "third",
     "bookmarks": [],
     "tags": ["tip"],
     "parents": ["29114dbae42b9f078cf2714dbe3a86bba8ec7453"]
    },
    {
     "rev": 7,
     "node": "29114dbae42b9f078cf2714dbe3a86bba8ec7453",
     "branch": "default",
     "phase": "draft",
     "user": "User Name <user@hostname>",
     "date": [1000000, 0],
     "desc": "second",
     "bookmarks": [],
     "tags": [],
     "parents": ["0000000000000000000000000000000000000000"]
    },
    {
     "rev": 6,
     "node": "d41e714fe50d9e4a5f11b4d595d543481b5f980b",
     "branch": "default",
     "phase": "draft",
     "user": "person",
     "date": [1500001, 0],
     "desc": "merge",
     "bookmarks": [],
     "tags": [],
     "parents": ["13207e5a10d9fd28ec424934298e176197f2c67f", "bbe44766e73d5f11ed2177f1838de10c53ef3e74"]
    },
    {
     "rev": 5,
     "node": "13207e5a10d9fd28ec424934298e176197f2c67f",
     "branch": "default",
     "phase": "draft",
     "user": "person",
     "date": [1500000, 0],
     "desc": "new head",
     "bookmarks": [],
     "tags": [],
     "parents": ["10e46f2dcbf4823578cf180f33ecf0b957964c47"]
    },
    {
     "rev": 4,
     "node": "bbe44766e73d5f11ed2177f1838de10c53ef3e74",
     "branch": "foo",
     "phase": "draft",
     "user": "person",
     "date": [1400000, 0],
     "desc": "new branch",
     "bookmarks": [],
     "tags": [],
     "parents": ["10e46f2dcbf4823578cf180f33ecf0b957964c47"]
    },
    {
     "rev": 3,
     "node": "10e46f2dcbf4823578cf180f33ecf0b957964c47",
     "branch": "default",
     "phase": "draft",
     "user": "person",
     "date": [1300000, 0],
     "desc": "no user, no domain",
     "bookmarks": [],
     "tags": [],
     "parents": ["97054abb4ab824450e9164180baf491ae0078465"]
    },
    {
     "rev": 2,
     "node": "97054abb4ab824450e9164180baf491ae0078465",
     "branch": "default",
     "phase": "draft",
     "user": "other@place",
     "date": [1200000, 0],
     "desc": "no person",
     "bookmarks": [],
     "tags": [],
     "parents": ["b608e9d1a3f0273ccf70fb85fd6866b3482bf965"]
    },
    {
     "rev": 1,
     "node": "b608e9d1a3f0273ccf70fb85fd6866b3482bf965",
     "branch": "default",
     "phase": "draft",
     "user": "A. N. Other <other@place>",
     "date": [1100000, 0],
     "desc": "other 1\nother 2\n\nother 3",
     "bookmarks": [],
     "tags": [],
     "parents": ["1e4e1b8f71e05681d422154f5421e385fec3454f"]
    },
    {
     "rev": 0,
     "node": "1e4e1b8f71e05681d422154f5421e385fec3454f",
     "branch": "default",
     "phase": "draft",
     "user": "User Name <user@hostname>",
     "date": [1000000, 0],
     "desc": "line 1\nline 2",
     "bookmarks": [],
     "tags": [],
     "parents": ["0000000000000000000000000000000000000000"]
    }
   ]
 
   $ hg heads -v -Tjson
   [
    {
     "rev": 8,
     "node": "95c24699272ef57d062b8bccc32c878bf841784a",
     "branch": "default",
     "phase": "draft",
     "user": "test",
     "date": [1577872860, 0],
     "desc": "third",
     "bookmarks": [],
     "tags": ["tip"],
     "parents": ["29114dbae42b9f078cf2714dbe3a86bba8ec7453"],
     "files": ["fourth", "second", "third"]
    },
    {
     "rev": 6,
     "node": "d41e714fe50d9e4a5f11b4d595d543481b5f980b",
     "branch": "default",
     "phase": "draft",
     "user": "person",
     "date": [1500001, 0],
     "desc": "merge",
     "bookmarks": [],
     "tags": [],
     "parents": ["13207e5a10d9fd28ec424934298e176197f2c67f", "bbe44766e73d5f11ed2177f1838de10c53ef3e74"],
     "files": []
    },
    {
     "rev": 4,
     "node": "bbe44766e73d5f11ed2177f1838de10c53ef3e74",
     "branch": "foo",
     "phase": "draft",
     "user": "person",
     "date": [1400000, 0],
     "desc": "new branch",
     "bookmarks": [],
     "tags": [],
     "parents": ["10e46f2dcbf4823578cf180f33ecf0b957964c47"],
     "files": []
    }
   ]
 
   $ hg log --debug -Tjson
   [
    {
     "rev": 8,
     "node": "95c24699272ef57d062b8bccc32c878bf841784a",
     "branch": "default",
     "phase": "draft",
     "user": "test",
     "date": [1577872860, 0],
     "desc": "third",
     "bookmarks": [],
     "tags": ["tip"],
     "parents": ["29114dbae42b9f078cf2714dbe3a86bba8ec7453"],
     "manifest": "94961b75a2da554b4df6fb599e5bfc7d48de0c64",
     "extra": {"branch": "default"},
     "modified": [],
     "added": ["fourth", "third"],
     "removed": ["second"]
    },
    {
     "rev": 7,
     "node": "29114dbae42b9f078cf2714dbe3a86bba8ec7453",
     "branch": "default",
     "phase": "draft",
     "user": "User Name <user@hostname>",
     "date": [1000000, 0],
     "desc": "second",
     "bookmarks": [],
     "tags": [],
     "parents": ["0000000000000000000000000000000000000000"],
     "manifest": "f2dbc354b94e5ec0b4f10680ee0cee816101d0bf",
     "extra": {"branch": "default"},
     "modified": [],
     "added": ["second"],
     "removed": []
    },
    {
     "rev": 6,
     "node": "d41e714fe50d9e4a5f11b4d595d543481b5f980b",
     "branch": "default",
     "phase": "draft",
     "user": "person",
     "date": [1500001, 0],
     "desc": "merge",
     "bookmarks": [],
     "tags": [],
     "parents": ["13207e5a10d9fd28ec424934298e176197f2c67f", "bbe44766e73d5f11ed2177f1838de10c53ef3e74"],
     "manifest": "4dc3def4f9b4c6e8de820f6ee74737f91e96a216",
     "extra": {"branch": "default"},
     "modified": [],
     "added": [],
     "removed": []
    },
    {
     "rev": 5,
     "node": "13207e5a10d9fd28ec424934298e176197f2c67f",
     "branch": "default",
     "phase": "draft",
     "user": "person",
     "date": [1500000, 0],
     "desc": "new head",
     "bookmarks": [],
     "tags": [],
     "parents": ["10e46f2dcbf4823578cf180f33ecf0b957964c47"],
     "manifest": "4dc3def4f9b4c6e8de820f6ee74737f91e96a216",
     "extra": {"branch": "default"},
     "modified": [],
     "added": ["d"],
     "removed": []
    },
    {
     "rev": 4,
     "node": "bbe44766e73d5f11ed2177f1838de10c53ef3e74",
     "branch": "foo",
     "phase": "draft",
     "user": "person",
     "date": [1400000, 0],
     "desc": "new branch",
     "bookmarks": [],
     "tags": [],
     "parents": ["10e46f2dcbf4823578cf180f33ecf0b957964c47"],
     "manifest": "cb5a1327723bada42f117e4c55a303246eaf9ccc",
     "extra": {"branch": "foo"},
     "modified": [],
     "added": [],
     "removed": []
    },
    {
     "rev": 3,
     "node": "10e46f2dcbf4823578cf180f33ecf0b957964c47",
     "branch": "default",
     "phase": "draft",
     "user": "person",
     "date": [1300000, 0],
     "desc": "no user, no domain",
     "bookmarks": [],
     "tags": [],
     "parents": ["97054abb4ab824450e9164180baf491ae0078465"],
     "manifest": "cb5a1327723bada42f117e4c55a303246eaf9ccc",
     "extra": {"branch": "default"},
     "modified": ["c"],
     "added": [],
     "removed": []
    },
    {
     "rev": 2,
     "node": "97054abb4ab824450e9164180baf491ae0078465",
     "branch": "default",
     "phase": "draft",
     "user": "other@place",
     "date": [1200000, 0],
     "desc": "no person",
     "bookmarks": [],
     "tags": [],
     "parents": ["b608e9d1a3f0273ccf70fb85fd6866b3482bf965"],
     "manifest": "6e0e82995c35d0d57a52aca8da4e56139e06b4b1",
     "extra": {"branch": "default"},
     "modified": [],
     "added": ["c"],
     "removed": []
    },
    {
     "rev": 1,
     "node": "b608e9d1a3f0273ccf70fb85fd6866b3482bf965",
     "branch": "default",
     "phase": "draft",
     "user": "A. N. Other <other@place>",
     "date": [1100000, 0],
     "desc": "other 1\nother 2\n\nother 3",
     "bookmarks": [],
     "tags": [],
     "parents": ["1e4e1b8f71e05681d422154f5421e385fec3454f"],
     "manifest": "4e8d705b1e53e3f9375e0e60dc7b525d8211fe55",
     "extra": {"branch": "default"},
     "modified": [],
     "added": ["b"],
     "removed": []
    },
    {
     "rev": 0,
     "node": "1e4e1b8f71e05681d422154f5421e385fec3454f",
     "branch": "default",
     "phase": "draft",
     "user": "User Name <user@hostname>",
     "date": [1000000, 0],
     "desc": "line 1\nline 2",
     "bookmarks": [],
     "tags": [],
     "parents": ["0000000000000000000000000000000000000000"],
     "manifest": "a0c8bcbbb45c63b90b70ad007bf38961f64f2af0",
     "extra": {"branch": "default"},
     "modified": [],
     "added": ["a"],
     "removed": []
    }
   ]
 
 Error if style not readable:
 
 #if unix-permissions no-root
   $ touch q
   $ chmod 0 q
   $ hg log --style ./q
   abort: Permission denied: ./q
   [255]
 #endif
 
 Error if no style:
 
   $ hg log --style notexist
   abort: style 'notexist' not found
   (available styles: bisect, changelog, compact, default, phases, show, status, xml)
   [255]
 
   $ hg log -T list
   available styles: bisect, changelog, compact, default, phases, show, status, xml
   abort: specify a template
   [255]
 
 Error if style missing key:
 
   $ echo 'q = q' > t
   $ hg log --style ./t
   abort: "changeset" not in template map
   [255]
 
 Error if style missing value:
 
   $ echo 'changeset =' > t
   $ hg log --style t
   hg: parse error at t:1: missing value
   [255]
 
 Error if include fails:
 
   $ echo 'changeset = q' >> t
 #if unix-permissions no-root
   $ hg log --style ./t
   abort: template file ./q: Permission denied
   [255]
   $ rm -f q
 #endif
 
 Include works:
 
   $ echo '{rev}' > q
   $ hg log --style ./t
   8
   7
   6
   5
   4
   3
   2
   1
   0
 
 Check that recursive reference does not fall into RuntimeError (issue4758):
 
  common mistake:
 
   $ cat << EOF > issue4758
   > changeset = '{changeset}\n'
   > EOF
   $ hg log --style ./issue4758
   abort: recursive reference 'changeset' in template
   [255]
 
  circular reference:
 
   $ cat << EOF > issue4758
   > changeset = '{foo}'
   > foo = '{changeset}'
   > EOF
   $ hg log --style ./issue4758
   abort: recursive reference 'foo' in template
   [255]
 
  buildmap() -> gettemplate(), where no thunk was made:
 
   $ cat << EOF > issue4758
   > changeset = '{files % changeset}\n'
   > EOF
   $ hg log --style ./issue4758
   abort: recursive reference 'changeset' in template
   [255]
 
  not a recursion if a keyword of the same name exists:
 
   $ cat << EOF > issue4758
   > changeset = '{tags % rev}'
   > rev = '{rev} {tag}\n'
   > EOF
   $ hg log --style ./issue4758 -r tip
   8 tip
 
 Check that {phase} works correctly on parents:
 
   $ cat << EOF > parentphase
   > changeset_debug = '{rev} ({phase}):{parents}\n'
   > parent = ' {rev} ({phase})'
   > EOF
   $ hg phase -r 5 --public
   $ hg phase -r 7 --secret --force
   $ hg log --debug -G --style ./parentphase
   @  8 (secret): 7 (secret) -1 (public)
   |
   o  7 (secret): -1 (public) -1 (public)
   
   o    6 (draft): 5 (public) 4 (draft)
   |\
   | o  5 (public): 3 (public) -1 (public)
   | |
   o |  4 (draft): 3 (public) -1 (public)
   |/
   o  3 (public): 2 (public) -1 (public)
   |
   o  2 (public): 1 (public) -1 (public)
   |
   o  1 (public): 0 (public) -1 (public)
   |
   o  0 (public): -1 (public) -1 (public)
   
 
 Missing non-standard names give no error (backward compatibility):
 
   $ echo "changeset = '{c}'" > t
   $ hg log --style ./t
 
 Defining non-standard name works:
 
   $ cat <<EOF > t
   > changeset = '{c}'
   > c = q
   > EOF
   $ hg log --style ./t
   8
   7
   6
   5
   4
   3
   2
   1
   0
 
 ui.style works:
 
   $ echo '[ui]' > .hg/hgrc
   $ echo 'style = t' >> .hg/hgrc
   $ hg log
   8
   7
   6
   5
   4
   3
   2
   1
   0
 
 
 Issue338:
 
   $ hg log --style=changelog > changelog
 
   $ cat changelog
   2020-01-01  test  <test>
   
   	* fourth, second, third:
   	third
   	[95c24699272e] [tip]
   
   1970-01-12  User Name  <user@hostname>
   
   	* second:
   	second
   	[29114dbae42b]
   
   1970-01-18  person  <person>
   
   	* merge
   	[d41e714fe50d]
   
   	* d:
   	new head
   	[13207e5a10d9]
   
   1970-01-17  person  <person>
   
   	* new branch
   	[bbe44766e73d] <foo>
   
   1970-01-16  person  <person>
   
   	* c:
   	no user, no domain
   	[10e46f2dcbf4]
   
   1970-01-14  other  <other@place>
   
   	* c:
   	no person
   	[97054abb4ab8]
   
   1970-01-13  A. N. Other  <other@place>
   
   	* b:
   	other 1 other 2
   
   	other 3
   	[b608e9d1a3f0]
   
   1970-01-12  User Name  <user@hostname>
   
   	* a:
   	line 1 line 2
   	[1e4e1b8f71e0]
   
 
 Issue2130: xml output for 'hg heads' is malformed
 
   $ hg heads --style changelog
   2020-01-01  test  <test>
   
   	* fourth, second, third:
   	third
   	[95c24699272e] [tip]
   
   1970-01-18  person  <person>
   
   	* merge
   	[d41e714fe50d]
   
   1970-01-17  person  <person>
   
   	* new branch
   	[bbe44766e73d] <foo>
   
 
 Keys work:
 
   $ for key in author branch branches date desc file_adds file_dels file_mods \
   >         file_copies file_copies_switch files \
   >         manifest node parents rev tags diffstat extras \
   >         p1rev p2rev p1node p2node; do
   >     for mode in '' --verbose --debug; do
   >         hg log $mode --template "$key$mode: {$key}\n"
   >     done
   > done
   author: test
   author: User Name <user@hostname>
   author: person
   author: person
   author: person
   author: person
   author: other@place
   author: A. N. Other <other@place>
   author: User Name <user@hostname>
   author--verbose: test
   author--verbose: User Name <user@hostname>
   author--verbose: person
   author--verbose: person
   author--verbose: person
   author--verbose: person
   author--verbose: other@place
   author--verbose: A. N. Other <other@place>
   author--verbose: User Name <user@hostname>
   author--debug: test
   author--debug: User Name <user@hostname>
   author--debug: person
   author--debug: person
   author--debug: person
   author--debug: person
   author--debug: other@place
   author--debug: A. N. Other <other@place>
   author--debug: User Name <user@hostname>
   branch: default
   branch: default
   branch: default
   branch: default
   branch: foo
   branch: default
   branch: default
   branch: default
   branch: default
   branch--verbose: default
   branch--verbose: default
   branch--verbose: default
   branch--verbose: default
   branch--verbose: foo
   branch--verbose: default
   branch--verbose: default
   branch--verbose: default
   branch--verbose: default
   branch--debug: default
   branch--debug: default
   branch--debug: default
   branch--debug: default
   branch--debug: foo
   branch--debug: default
   branch--debug: default
   branch--debug: default
   branch--debug: default
   branches: 
   branches: 
   branches: 
   branches: 
   branches: foo
   branches: 
   branches: 
   branches: 
   branches: 
   branches--verbose: 
   branches--verbose: 
   branches--verbose: 
   branches--verbose: 
   branches--verbose: foo
   branches--verbose: 
   branches--verbose: 
   branches--verbose: 
   branches--verbose: 
   branches--debug: 
   branches--debug: 
   branches--debug: 
   branches--debug: 
   branches--debug: foo
   branches--debug: 
   branches--debug: 
   branches--debug: 
   branches--debug: 
   date: 1577872860.00
   date: 1000000.00
   date: 1500001.00
   date: 1500000.00
   date: 1400000.00
   date: 1300000.00
   date: 1200000.00
   date: 1100000.00
   date: 1000000.00
   date--verbose: 1577872860.00
   date--verbose: 1000000.00
   date--verbose: 1500001.00
   date--verbose: 1500000.00
   date--verbose: 1400000.00
   date--verbose: 1300000.00
   date--verbose: 1200000.00
   date--verbose: 1100000.00
   date--verbose: 1000000.00
   date--debug: 1577872860.00
   date--debug: 1000000.00
   date--debug: 1500001.00
   date--debug: 1500000.00
   date--debug: 1400000.00
   date--debug: 1300000.00
   date--debug: 1200000.00
   date--debug: 1100000.00
   date--debug: 1000000.00
   desc: third
   desc: second
   desc: merge
   desc: new head
   desc: new branch
   desc: no user, no domain
   desc: no person
   desc: other 1
   other 2
   
   other 3
   desc: line 1
   line 2
   desc--verbose: third
   desc--verbose: second
   desc--verbose: merge
   desc--verbose: new head
   desc--verbose: new branch
   desc--verbose: no user, no domain
   desc--verbose: no person
   desc--verbose: other 1
   other 2
   
   other 3
   desc--verbose: line 1
   line 2
   desc--debug: third
   desc--debug: second
   desc--debug: merge
   desc--debug: new head
   desc--debug: new branch
   desc--debug: no user, no domain
   desc--debug: no person
   desc--debug: other 1
   other 2
   
   other 3
   desc--debug: line 1
   line 2
   file_adds: fourth third
   file_adds: second
   file_adds: 
   file_adds: d
   file_adds: 
   file_adds: 
   file_adds: c
   file_adds: b
   file_adds: a
   file_adds--verbose: fourth third
   file_adds--verbose: second
   file_adds--verbose: 
   file_adds--verbose: d
   file_adds--verbose: 
   file_adds--verbose: 
   file_adds--verbose: c
   file_adds--verbose: b
   file_adds--verbose: a
   file_adds--debug: fourth third
   file_adds--debug: second
   file_adds--debug: 
   file_adds--debug: d
   file_adds--debug: 
   file_adds--debug: 
   file_adds--debug: c
   file_adds--debug: b
   file_adds--debug: a
   file_dels: second
   file_dels: 
   file_dels: 
   file_dels: 
   file_dels: 
   file_dels: 
   file_dels: 
   file_dels: 
   file_dels: 
   file_dels--verbose: second
   file_dels--verbose: 
   file_dels--verbose: 
   file_dels--verbose: 
   file_dels--verbose: 
   file_dels--verbose: 
   file_dels--verbose: 
   file_dels--verbose: 
   file_dels--verbose: 
   file_dels--debug: second
   file_dels--debug: 
   file_dels--debug: 
   file_dels--debug: 
   file_dels--debug: 
   file_dels--debug: 
   file_dels--debug: 
   file_dels--debug: 
   file_dels--debug: 
   file_mods: 
   file_mods: 
   file_mods: 
   file_mods: 
   file_mods: 
   file_mods: c
   file_mods: 
   file_mods: 
   file_mods: 
   file_mods--verbose: 
   file_mods--verbose: 
   file_mods--verbose: 
   file_mods--verbose: 
   file_mods--verbose: 
   file_mods--verbose: c
   file_mods--verbose: 
   file_mods--verbose: 
   file_mods--verbose: 
   file_mods--debug: 
   file_mods--debug: 
   file_mods--debug: 
   file_mods--debug: 
   file_mods--debug: 
   file_mods--debug: c
   file_mods--debug: 
   file_mods--debug: 
   file_mods--debug: 
   file_copies: fourth (second)
   file_copies: 
   file_copies: 
   file_copies: 
   file_copies: 
   file_copies: 
   file_copies: 
   file_copies: 
   file_copies: 
   file_copies--verbose: fourth (second)
   file_copies--verbose: 
   file_copies--verbose: 
   file_copies--verbose: 
   file_copies--verbose: 
   file_copies--verbose: 
   file_copies--verbose: 
   file_copies--verbose: 
   file_copies--verbose: 
   file_copies--debug: fourth (second)
   file_copies--debug: 
   file_copies--debug: 
   file_copies--debug: 
   file_copies--debug: 
   file_copies--debug: 
   file_copies--debug: 
   file_copies--debug: 
   file_copies--debug: 
   file_copies_switch: 
   file_copies_switch: 
   file_copies_switch: 
   file_copies_switch: 
   file_copies_switch: 
   file_copies_switch: 
   file_copies_switch: 
   file_copies_switch: 
   file_copies_switch: 
   file_copies_switch--verbose: 
   file_copies_switch--verbose: 
   file_copies_switch--verbose: 
   file_copies_switch--verbose: 
   file_copies_switch--verbose: 
   file_copies_switch--verbose: 
   file_copies_switch--verbose: 
   file_copies_switch--verbose: 
   file_copies_switch--verbose: 
   file_copies_switch--debug: 
   file_copies_switch--debug: 
   file_copies_switch--debug: 
   file_copies_switch--debug: 
   file_copies_switch--debug: 
   file_copies_switch--debug: 
   file_copies_switch--debug: 
   file_copies_switch--debug: 
   file_copies_switch--debug: 
   files: fourth second third
   files: second
   files: 
   files: d
   files: 
   files: c
   files: c
   files: b
   files: a
   files--verbose: fourth second third
   files--verbose: second
   files--verbose: 
   files--verbose: d
   files--verbose: 
   files--verbose: c
   files--verbose: c
   files--verbose: b
   files--verbose: a
   files--debug: fourth second third
   files--debug: second
   files--debug: 
   files--debug: d
   files--debug: 
   files--debug: c
   files--debug: c
   files--debug: b
   files--debug: a
   manifest: 6:94961b75a2da
   manifest: 5:f2dbc354b94e
   manifest: 4:4dc3def4f9b4
   manifest: 4:4dc3def4f9b4
   manifest: 3:cb5a1327723b
   manifest: 3:cb5a1327723b
   manifest: 2:6e0e82995c35
   manifest: 1:4e8d705b1e53
   manifest: 0:a0c8bcbbb45c
   manifest--verbose: 6:94961b75a2da
   manifest--verbose: 5:f2dbc354b94e
   manifest--verbose: 4:4dc3def4f9b4
   manifest--verbose: 4:4dc3def4f9b4
   manifest--verbose: 3:cb5a1327723b
   manifest--verbose: 3:cb5a1327723b
   manifest--verbose: 2:6e0e82995c35
   manifest--verbose: 1:4e8d705b1e53
   manifest--verbose: 0:a0c8bcbbb45c
   manifest--debug: 6:94961b75a2da554b4df6fb599e5bfc7d48de0c64
   manifest--debug: 5:f2dbc354b94e5ec0b4f10680ee0cee816101d0bf
   manifest--debug: 4:4dc3def4f9b4c6e8de820f6ee74737f91e96a216
   manifest--debug: 4:4dc3def4f9b4c6e8de820f6ee74737f91e96a216
   manifest--debug: 3:cb5a1327723bada42f117e4c55a303246eaf9ccc
   manifest--debug: 3:cb5a1327723bada42f117e4c55a303246eaf9ccc
   manifest--debug: 2:6e0e82995c35d0d57a52aca8da4e56139e06b4b1
   manifest--debug: 1:4e8d705b1e53e3f9375e0e60dc7b525d8211fe55
   manifest--debug: 0:a0c8bcbbb45c63b90b70ad007bf38961f64f2af0
   node: 95c24699272ef57d062b8bccc32c878bf841784a
   node: 29114dbae42b9f078cf2714dbe3a86bba8ec7453
   node: d41e714fe50d9e4a5f11b4d595d543481b5f980b
   node: 13207e5a10d9fd28ec424934298e176197f2c67f
   node: bbe44766e73d5f11ed2177f1838de10c53ef3e74
   node: 10e46f2dcbf4823578cf180f33ecf0b957964c47
   node: 97054abb4ab824450e9164180baf491ae0078465
   node: b608e9d1a3f0273ccf70fb85fd6866b3482bf965
   node: 1e4e1b8f71e05681d422154f5421e385fec3454f
   node--verbose: 95c24699272ef57d062b8bccc32c878bf841784a
   node--verbose: 29114dbae42b9f078cf2714dbe3a86bba8ec7453
   node--verbose: d41e714fe50d9e4a5f11b4d595d543481b5f980b
   node--verbose: 13207e5a10d9fd28ec424934298e176197f2c67f
   node--verbose: bbe44766e73d5f11ed2177f1838de10c53ef3e74
   node--verbose: 10e46f2dcbf4823578cf180f33ecf0b957964c47
   node--verbose: 97054abb4ab824450e9164180baf491ae0078465
   node--verbose: b608e9d1a3f0273ccf70fb85fd6866b3482bf965
   node--verbose: 1e4e1b8f71e05681d422154f5421e385fec3454f
   node--debug: 95c24699272ef57d062b8bccc32c878bf841784a
   node--debug: 29114dbae42b9f078cf2714dbe3a86bba8ec7453
   node--debug: d41e714fe50d9e4a5f11b4d595d543481b5f980b
   node--debug: 13207e5a10d9fd28ec424934298e176197f2c67f
   node--debug: bbe44766e73d5f11ed2177f1838de10c53ef3e74
   node--debug: 10e46f2dcbf4823578cf180f33ecf0b957964c47
   node--debug: 97054abb4ab824450e9164180baf491ae0078465
   node--debug: b608e9d1a3f0273ccf70fb85fd6866b3482bf965
   node--debug: 1e4e1b8f71e05681d422154f5421e385fec3454f
   parents: 
   parents: -1:000000000000 
   parents: 5:13207e5a10d9 4:bbe44766e73d 
   parents: 3:10e46f2dcbf4 
   parents: 
   parents: 
   parents: 
   parents: 
   parents: 
   parents--verbose: 
   parents--verbose: -1:000000000000 
   parents--verbose: 5:13207e5a10d9 4:bbe44766e73d 
   parents--verbose: 3:10e46f2dcbf4 
   parents--verbose: 
   parents--verbose: 
   parents--verbose: 
   parents--verbose: 
   parents--verbose: 
   parents--debug: 7:29114dbae42b9f078cf2714dbe3a86bba8ec7453 -1:0000000000000000000000000000000000000000 
   parents--debug: -1:0000000000000000000000000000000000000000 -1:0000000000000000000000000000000000000000 
   parents--debug: 5:13207e5a10d9fd28ec424934298e176197f2c67f 4:bbe44766e73d5f11ed2177f1838de10c53ef3e74 
   parents--debug: 3:10e46f2dcbf4823578cf180f33ecf0b957964c47 -1:0000000000000000000000000000000000000000 
   parents--debug: 3:10e46f2dcbf4823578cf180f33ecf0b957964c47 -1:0000000000000000000000000000000000000000 
   parents--debug: 2:97054abb4ab824450e9164180baf491ae0078465 -1:0000000000000000000000000000000000000000 
   parents--debug: 1:b608e9d1a3f0273ccf70fb85fd6866b3482bf965 -1:0000000000000000000000000000000000000000 
   parents--debug: 0:1e4e1b8f71e05681d422154f5421e385fec3454f -1:0000000000000000000000000000000000000000 
   parents--debug: -1:0000000000000000000000000000000000000000 -1:0000000000000000000000000000000000000000 
   rev: 8
   rev: 7
   rev: 6
   rev: 5
   rev: 4
   rev: 3
   rev: 2
   rev: 1
   rev: 0
   rev--verbose: 8
   rev--verbose: 7
   rev--verbose: 6
   rev--verbose: 5
   rev--verbose: 4
   rev--verbose: 3
   rev--verbose: 2
   rev--verbose: 1
   rev--verbose: 0
   rev--debug: 8
   rev--debug: 7
   rev--debug: 6
   rev--debug: 5
   rev--debug: 4
   rev--debug: 3
   rev--debug: 2
   rev--debug: 1
   rev--debug: 0
   tags: tip
   tags: 
   tags: 
   tags: 
   tags: 
   tags: 
   tags: 
   tags: 
   tags: 
   tags--verbose: tip
   tags--verbose: 
   tags--verbose: 
   tags--verbose: 
   tags--verbose: 
   tags--verbose: 
   tags--verbose: 
   tags--verbose: 
   tags--verbose: 
   tags--debug: tip
   tags--debug: 
   tags--debug: 
   tags--debug: 
   tags--debug: 
   tags--debug: 
   tags--debug: 
   tags--debug: 
   tags--debug: 
   diffstat: 3: +2/-1
   diffstat: 1: +1/-0
   diffstat: 0: +0/-0
   diffstat: 1: +1/-0
   diffstat: 0: +0/-0
   diffstat: 1: +1/-0
   diffstat: 1: +4/-0
   diffstat: 1: +2/-0
   diffstat: 1: +1/-0
   diffstat--verbose: 3: +2/-1
   diffstat--verbose: 1: +1/-0
   diffstat--verbose: 0: +0/-0
   diffstat--verbose: 1: +1/-0
   diffstat--verbose: 0: +0/-0
   diffstat--verbose: 1: +1/-0
   diffstat--verbose: 1: +4/-0
   diffstat--verbose: 1: +2/-0
   diffstat--verbose: 1: +1/-0
   diffstat--debug: 3: +2/-1
   diffstat--debug: 1: +1/-0
   diffstat--debug: 0: +0/-0
   diffstat--debug: 1: +1/-0
   diffstat--debug: 0: +0/-0
   diffstat--debug: 1: +1/-0
   diffstat--debug: 1: +4/-0
   diffstat--debug: 1: +2/-0
   diffstat--debug: 1: +1/-0
   extras: branch=default
   extras: branch=default
   extras: branch=default
   extras: branch=default
   extras: branch=foo
   extras: branch=default
   extras: branch=default
   extras: branch=default
   extras: branch=default
   extras--verbose: branch=default
   extras--verbose: branch=default
   extras--verbose: branch=default
   extras--verbose: branch=default
   extras--verbose: branch=foo
   extras--verbose: branch=default
   extras--verbose: branch=default
   extras--verbose: branch=default
   extras--verbose: branch=default
   extras--debug: branch=default
   extras--debug: branch=default
   extras--debug: branch=default
   extras--debug: branch=default
   extras--debug: branch=foo
   extras--debug: branch=default
   extras--debug: branch=default
   extras--debug: branch=default
   extras--debug: branch=default
   p1rev: 7
   p1rev: -1
   p1rev: 5
   p1rev: 3
   p1rev: 3
   p1rev: 2
   p1rev: 1
   p1rev: 0
   p1rev: -1
   p1rev--verbose: 7
   p1rev--verbose: -1
   p1rev--verbose: 5
   p1rev--verbose: 3
   p1rev--verbose: 3
   p1rev--verbose: 2
   p1rev--verbose: 1
   p1rev--verbose: 0
   p1rev--verbose: -1
   p1rev--debug: 7
   p1rev--debug: -1
   p1rev--debug: 5
   p1rev--debug: 3
   p1rev--debug: 3
   p1rev--debug: 2
   p1rev--debug: 1
   p1rev--debug: 0
   p1rev--debug: -1
   p2rev: -1
   p2rev: -1
   p2rev: 4
   p2rev: -1
   p2rev: -1
   p2rev: -1
   p2rev: -1
   p2rev: -1
   p2rev: -1
   p2rev--verbose: -1
   p2rev--verbose: -1
   p2rev--verbose: 4
   p2rev--verbose: -1
   p2rev--verbose: -1
   p2rev--verbose: -1
   p2rev--verbose: -1
   p2rev--verbose: -1
   p2rev--verbose: -1
   p2rev--debug: -1
   p2rev--debug: -1
   p2rev--debug: 4
   p2rev--debug: -1
   p2rev--debug: -1
   p2rev--debug: -1
   p2rev--debug: -1
   p2rev--debug: -1
   p2rev--debug: -1
   p1node: 29114dbae42b9f078cf2714dbe3a86bba8ec7453
   p1node: 0000000000000000000000000000000000000000
   p1node: 13207e5a10d9fd28ec424934298e176197f2c67f
   p1node: 10e46f2dcbf4823578cf180f33ecf0b957964c47
   p1node: 10e46f2dcbf4823578cf180f33ecf0b957964c47
   p1node: 97054abb4ab824450e9164180baf491ae0078465
   p1node: b608e9d1a3f0273ccf70fb85fd6866b3482bf965
   p1node: 1e4e1b8f71e05681d422154f5421e385fec3454f
   p1node: 0000000000000000000000000000000000000000
   p1node--verbose: 29114dbae42b9f078cf2714dbe3a86bba8ec7453
   p1node--verbose: 0000000000000000000000000000000000000000
   p1node--verbose: 13207e5a10d9fd28ec424934298e176197f2c67f
   p1node--verbose: 10e46f2dcbf4823578cf180f33ecf0b957964c47
   p1node--verbose: 10e46f2dcbf4823578cf180f33ecf0b957964c47
   p1node--verbose: 97054abb4ab824450e9164180baf491ae0078465
   p1node--verbose: b608e9d1a3f0273ccf70fb85fd6866b3482bf965
   p1node--verbose: 1e4e1b8f71e05681d422154f5421e385fec3454f
   p1node--verbose: 0000000000000000000000000000000000000000
   p1node--debug: 29114dbae42b9f078cf2714dbe3a86bba8ec7453
   p1node--debug: 0000000000000000000000000000000000000000
   p1node--debug: 13207e5a10d9fd28ec424934298e176197f2c67f
   p1node--debug: 10e46f2dcbf4823578cf180f33ecf0b957964c47
   p1node--debug: 10e46f2dcbf4823578cf180f33ecf0b957964c47
   p1node--debug: 97054abb4ab824450e9164180baf491ae0078465
   p1node--debug: b608e9d1a3f0273ccf70fb85fd6866b3482bf965
   p1node--debug: 1e4e1b8f71e05681d422154f5421e385fec3454f
   p1node--debug: 0000000000000000000000000000000000000000
   p2node: 0000000000000000000000000000000000000000
   p2node: 0000000000000000000000000000000000000000
   p2node: bbe44766e73d5f11ed2177f1838de10c53ef3e74
   p2node: 0000000000000000000000000000000000000000
   p2node: 0000000000000000000000000000000000000000
   p2node: 0000000000000000000000000000000000000000
   p2node: 0000000000000000000000000000000000000000
   p2node: 0000000000000000000000000000000000000000
   p2node: 0000000000000000000000000000000000000000
   p2node--verbose: 0000000000000000000000000000000000000000
   p2node--verbose: 0000000000000000000000000000000000000000
   p2node--verbose: bbe44766e73d5f11ed2177f1838de10c53ef3e74
   p2node--verbose: 0000000000000000000000000000000000000000
   p2node--verbose: 0000000000000000000000000000000000000000
   p2node--verbose: 0000000000000000000000000000000000000000
   p2node--verbose: 0000000000000000000000000000000000000000
   p2node--verbose: 0000000000000000000000000000000000000000
   p2node--verbose: 0000000000000000000000000000000000000000
   p2node--debug: 0000000000000000000000000000000000000000
   p2node--debug: 0000000000000000000000000000000000000000
   p2node--debug: bbe44766e73d5f11ed2177f1838de10c53ef3e74
   p2node--debug: 0000000000000000000000000000000000000000
   p2node--debug: 0000000000000000000000000000000000000000
   p2node--debug: 0000000000000000000000000000000000000000
   p2node--debug: 0000000000000000000000000000000000000000
   p2node--debug: 0000000000000000000000000000000000000000
   p2node--debug: 0000000000000000000000000000000000000000
 
 Filters work:
 
   $ hg log --template '{author|domain}\n'
   
   hostname
   
   
   
   
   place
   place
   hostname
 
   $ hg log --template '{author|person}\n'
   test
   User Name
   person
   person
   person
   person
   other
   A. N. Other
   User Name
 
   $ hg log --template '{author|user}\n'
   test
   user
   person
   person
   person
   person
   other
   other
   user
 
   $ hg log --template '{date|date}\n'
   Wed Jan 01 10:01:00 2020 +0000
   Mon Jan 12 13:46:40 1970 +0000
   Sun Jan 18 08:40:01 1970 +0000
   Sun Jan 18 08:40:00 1970 +0000
   Sat Jan 17 04:53:20 1970 +0000
   Fri Jan 16 01:06:40 1970 +0000
   Wed Jan 14 21:20:00 1970 +0000
   Tue Jan 13 17:33:20 1970 +0000
   Mon Jan 12 13:46:40 1970 +0000
 
   $ hg log --template '{date|isodate}\n'
   2020-01-01 10:01 +0000
   1970-01-12 13:46 +0000
   1970-01-18 08:40 +0000
   1970-01-18 08:40 +0000
   1970-01-17 04:53 +0000
   1970-01-16 01:06 +0000
   1970-01-14 21:20 +0000
   1970-01-13 17:33 +0000
   1970-01-12 13:46 +0000
 
   $ hg log --template '{date|isodatesec}\n'
   2020-01-01 10:01:00 +0000
   1970-01-12 13:46:40 +0000
   1970-01-18 08:40:01 +0000
   1970-01-18 08:40:00 +0000
   1970-01-17 04:53:20 +0000
   1970-01-16 01:06:40 +0000
   1970-01-14 21:20:00 +0000
   1970-01-13 17:33:20 +0000
   1970-01-12 13:46:40 +0000
 
   $ hg log --template '{date|rfc822date}\n'
   Wed, 01 Jan 2020 10:01:00 +0000
   Mon, 12 Jan 1970 13:46:40 +0000
   Sun, 18 Jan 1970 08:40:01 +0000
   Sun, 18 Jan 1970 08:40:00 +0000
   Sat, 17 Jan 1970 04:53:20 +0000
   Fri, 16 Jan 1970 01:06:40 +0000
   Wed, 14 Jan 1970 21:20:00 +0000
   Tue, 13 Jan 1970 17:33:20 +0000
   Mon, 12 Jan 1970 13:46:40 +0000
 
   $ hg log --template '{desc|firstline}\n'
   third
   second
   merge
   new head
   new branch
   no user, no domain
   no person
   other 1
   line 1
 
   $ hg log --template '{node|short}\n'
   95c24699272e
   29114dbae42b
   d41e714fe50d
   13207e5a10d9
   bbe44766e73d
   10e46f2dcbf4
   97054abb4ab8
   b608e9d1a3f0
   1e4e1b8f71e0
 
   $ hg log --template '<changeset author="{author|xmlescape}"/>\n'
   <changeset author="test"/>
   <changeset author="User Name &lt;user@hostname&gt;"/>
   <changeset author="person"/>
   <changeset author="person"/>
   <changeset author="person"/>
   <changeset author="person"/>
   <changeset author="other@place"/>
   <changeset author="A. N. Other &lt;other@place&gt;"/>
   <changeset author="User Name &lt;user@hostname&gt;"/>
 
   $ hg log --template '{rev}: {children}\n'
   8: 
   7: 8:95c24699272e
   6: 
   5: 6:d41e714fe50d
   4: 6:d41e714fe50d
   3: 4:bbe44766e73d 5:13207e5a10d9
   2: 3:10e46f2dcbf4
   1: 2:97054abb4ab8
   0: 1:b608e9d1a3f0
 
 Formatnode filter works:
 
   $ hg -q log -r 0 --template '{node|formatnode}\n'
   1e4e1b8f71e0
 
   $ hg log -r 0 --template '{node|formatnode}\n'
   1e4e1b8f71e0
 
   $ hg -v log -r 0 --template '{node|formatnode}\n'
   1e4e1b8f71e0
 
   $ hg --debug log -r 0 --template '{node|formatnode}\n'
   1e4e1b8f71e05681d422154f5421e385fec3454f
 
 Age filter:
 
   $ hg init unstable-hash
   $ cd unstable-hash
   $ hg log --template '{date|age}\n' > /dev/null || exit 1
 
   >>> from __future__ import absolute_import
   >>> import datetime
   >>> fp = open('a', 'w')
   >>> n = datetime.datetime.now() + datetime.timedelta(366 * 7)
   >>> fp.write('%d-%d-%d 00:00' % (n.year, n.month, n.day))
   >>> fp.close()
   $ hg add a
   $ hg commit -m future -d "`cat a`"
 
   $ hg log -l1 --template '{date|age}\n'
   7 years from now
 
   $ cd ..
   $ rm -rf unstable-hash
 
 Add a dummy commit to make up for the instability of the above:
 
   $ echo a > a
   $ hg add a
   $ hg ci -m future
 
 Count filter:
 
   $ hg log -l1 --template '{node|count} {node|short|count}\n'
   40 12
 
   $ hg log -l1 --template '{revset("null^")|count} {revset(".")|count} {revset("0::3")|count}\n'
   0 1 4
 
   $ hg log -G --template '{rev}: children: {children|count}, \
   > tags: {tags|count}, file_adds: {file_adds|count}, \
   > ancestors: {revset("ancestors(%s)", rev)|count}'
   @  9: children: 0, tags: 1, file_adds: 1, ancestors: 3
   |
   o  8: children: 1, tags: 0, file_adds: 2, ancestors: 2
   |
   o  7: children: 1, tags: 0, file_adds: 1, ancestors: 1
   
   o    6: children: 0, tags: 0, file_adds: 0, ancestors: 7
   |\
   | o  5: children: 1, tags: 0, file_adds: 1, ancestors: 5
   | |
   o |  4: children: 1, tags: 0, file_adds: 0, ancestors: 5
   |/
   o  3: children: 2, tags: 0, file_adds: 0, ancestors: 4
   |
   o  2: children: 1, tags: 0, file_adds: 1, ancestors: 3
   |
   o  1: children: 1, tags: 0, file_adds: 1, ancestors: 2
   |
   o  0: children: 1, tags: 0, file_adds: 1, ancestors: 1
   
 
 Upper/lower filters:
 
   $ hg log -r0 --template '{branch|upper}\n'
   DEFAULT
   $ hg log -r0 --template '{author|lower}\n'
   user name <user@hostname>
   $ hg log -r0 --template '{date|upper}\n'
   abort: template filter 'upper' is not compatible with keyword 'date'
   [255]
 
 Add a commit that does all possible modifications at once
 
   $ echo modify >> third
   $ touch b
   $ hg add b
   $ hg mv fourth fifth
   $ hg rm a
   $ hg ci -m "Modify, add, remove, rename"
 
 Check the status template
 
   $ cat <<EOF >> $HGRCPATH
   > [extensions]
   > color=
   > EOF
 
   $ hg log -T status -r 10
   changeset:   10:0f9759ec227a
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     Modify, add, remove, rename
   files:
   M third
   A b
   A fifth
   R a
   R fourth
   
   $ hg log -T status -C -r 10
   changeset:   10:0f9759ec227a
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     Modify, add, remove, rename
   files:
   M third
   A b
   A fifth
     fourth
   R a
   R fourth
   
   $ hg log -T status -C -r 10 -v
   changeset:   10:0f9759ec227a
   tag:         tip
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   description:
   Modify, add, remove, rename
   
   files:
   M third
   A b
   A fifth
     fourth
   R a
   R fourth
   
   $ hg log -T status -C -r 10 --debug
   changeset:   10:0f9759ec227a4859c2014a345cd8a859022b7c6c
   tag:         tip
   phase:       secret
   parent:      9:bf9dfba36635106d6a73ccc01e28b762da60e066
   parent:      -1:0000000000000000000000000000000000000000
   manifest:    8:89dd546f2de0a9d6d664f58d86097eb97baba567
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   extra:       branch=default
   description:
   Modify, add, remove, rename
   
   files:
   M third
   A b
   A fifth
     fourth
   R a
   R fourth
   
   $ hg log -T status -C -r 10 --quiet
   10:0f9759ec227a
   $ hg --color=debug log -T status -r 10
   [log.changeset changeset.secret|changeset:   10:0f9759ec227a]
   [log.tag|tag:         tip]
   [log.user|user:        test]
   [log.date|date:        Thu Jan 01 00:00:00 1970 +0000]
   [log.summary|summary:     Modify, add, remove, rename]
   [ui.note log.files|files:]
   [status.modified|M third]
   [status.added|A b]
   [status.added|A fifth]
   [status.removed|R a]
   [status.removed|R fourth]
   
   $ hg --color=debug log -T status -C -r 10
   [log.changeset changeset.secret|changeset:   10:0f9759ec227a]
   [log.tag|tag:         tip]
   [log.user|user:        test]
   [log.date|date:        Thu Jan 01 00:00:00 1970 +0000]
   [log.summary|summary:     Modify, add, remove, rename]
   [ui.note log.files|files:]
   [status.modified|M third]
   [status.added|A b]
   [status.added|A fifth]
   [status.copied|  fourth]
   [status.removed|R a]
   [status.removed|R fourth]
   
   $ hg --color=debug log -T status -C -r 10 -v
   [log.changeset changeset.secret|changeset:   10:0f9759ec227a]
   [log.tag|tag:         tip]
   [log.user|user:        test]
   [log.date|date:        Thu Jan 01 00:00:00 1970 +0000]
   [ui.note log.description|description:]
   [ui.note log.description|Modify, add, remove, rename]
   
   [ui.note log.files|files:]
   [status.modified|M third]
   [status.added|A b]
   [status.added|A fifth]
   [status.copied|  fourth]
   [status.removed|R a]
   [status.removed|R fourth]
   
   $ hg --color=debug log -T status -C -r 10 --debug
   [log.changeset changeset.secret|changeset:   10:0f9759ec227a4859c2014a345cd8a859022b7c6c]
   [log.tag|tag:         tip]
   [log.phase|phase:       secret]
   [log.parent changeset.secret|parent:      9:bf9dfba36635106d6a73ccc01e28b762da60e066]
   [log.parent changeset.public|parent:      -1:0000000000000000000000000000000000000000]
   [ui.debug log.manifest|manifest:    8:89dd546f2de0a9d6d664f58d86097eb97baba567]
   [log.user|user:        test]
   [log.date|date:        Thu Jan 01 00:00:00 1970 +0000]
   [ui.debug log.extra|extra:       branch=default]
   [ui.note log.description|description:]
   [ui.note log.description|Modify, add, remove, rename]
   
   [ui.note log.files|files:]
   [status.modified|M third]
   [status.added|A b]
   [status.added|A fifth]
   [status.copied|  fourth]
   [status.removed|R a]
   [status.removed|R fourth]
   
   $ hg --color=debug log -T status -C -r 10 --quiet
   [log.node|10:0f9759ec227a]
 
 Check the bisect template
 
   $ hg bisect -g 1
   $ hg bisect -b 3 --noupdate
   Testing changeset 2:97054abb4ab8 (2 changesets remaining, ~1 tests)
   $ hg log -T bisect -r 0:4
   changeset:   0:1e4e1b8f71e0
   bisect:      good (implicit)
   user:        User Name <user@hostname>
   date:        Mon Jan 12 13:46:40 1970 +0000
   summary:     line 1
   
   changeset:   1:b608e9d1a3f0
   bisect:      good
   user:        A. N. Other <other@place>
   date:        Tue Jan 13 17:33:20 1970 +0000
   summary:     other 1
   
   changeset:   2:97054abb4ab8
   bisect:      untested
   user:        other@place
   date:        Wed Jan 14 21:20:00 1970 +0000
   summary:     no person
   
   changeset:   3:10e46f2dcbf4
   bisect:      bad
   user:        person
   date:        Fri Jan 16 01:06:40 1970 +0000
   summary:     no user, no domain
   
   changeset:   4:bbe44766e73d
   bisect:      bad (implicit)
   branch:      foo
   user:        person
   date:        Sat Jan 17 04:53:20 1970 +0000
   summary:     new branch
   
   $ hg log --debug -T bisect -r 0:4
   changeset:   0:1e4e1b8f71e05681d422154f5421e385fec3454f
   bisect:      good (implicit)
   phase:       public
   parent:      -1:0000000000000000000000000000000000000000
   parent:      -1:0000000000000000000000000000000000000000
   manifest:    0:a0c8bcbbb45c63b90b70ad007bf38961f64f2af0
   user:        User Name <user@hostname>
   date:        Mon Jan 12 13:46:40 1970 +0000
   files+:      a
   extra:       branch=default
   description:
   line 1
   line 2
   
   
   changeset:   1:b608e9d1a3f0273ccf70fb85fd6866b3482bf965
   bisect:      good
   phase:       public
   parent:      0:1e4e1b8f71e05681d422154f5421e385fec3454f
   parent:      -1:0000000000000000000000000000000000000000
   manifest:    1:4e8d705b1e53e3f9375e0e60dc7b525d8211fe55
   user:        A. N. Other <other@place>
   date:        Tue Jan 13 17:33:20 1970 +0000
   files+:      b
   extra:       branch=default
   description:
   other 1
   other 2
   
   other 3
   
   
   changeset:   2:97054abb4ab824450e9164180baf491ae0078465
   bisect:      untested
   phase:       public
   parent:      1:b608e9d1a3f0273ccf70fb85fd6866b3482bf965
   parent:      -1:0000000000000000000000000000000000000000
   manifest:    2:6e0e82995c35d0d57a52aca8da4e56139e06b4b1
   user:        other@place
   date:        Wed Jan 14 21:20:00 1970 +0000
   files+:      c
   extra:       branch=default
   description:
   no person
   
   
   changeset:   3:10e46f2dcbf4823578cf180f33ecf0b957964c47
   bisect:      bad
   phase:       public
   parent:      2:97054abb4ab824450e9164180baf491ae0078465
   parent:      -1:0000000000000000000000000000000000000000
   manifest:    3:cb5a1327723bada42f117e4c55a303246eaf9ccc
   user:        person
   date:        Fri Jan 16 01:06:40 1970 +0000
   files:       c
   extra:       branch=default
   description:
   no user, no domain
   
   
   changeset:   4:bbe44766e73d5f11ed2177f1838de10c53ef3e74
   bisect:      bad (implicit)
   branch:      foo
   phase:       draft
   parent:      3:10e46f2dcbf4823578cf180f33ecf0b957964c47
   parent:      -1:0000000000000000000000000000000000000000
   manifest:    3:cb5a1327723bada42f117e4c55a303246eaf9ccc
   user:        person
   date:        Sat Jan 17 04:53:20 1970 +0000
   extra:       branch=foo
   description:
   new branch
   
   
   $ hg log -v -T bisect -r 0:4
   changeset:   0:1e4e1b8f71e0
   bisect:      good (implicit)
   user:        User Name <user@hostname>
   date:        Mon Jan 12 13:46:40 1970 +0000
   files:       a
   description:
   line 1
   line 2
   
   
   changeset:   1:b608e9d1a3f0
   bisect:      good
   user:        A. N. Other <other@place>
   date:        Tue Jan 13 17:33:20 1970 +0000
   files:       b
   description:
   other 1
   other 2
   
   other 3
   
   
   changeset:   2:97054abb4ab8
   bisect:      untested
   user:        other@place
   date:        Wed Jan 14 21:20:00 1970 +0000
   files:       c
   description:
   no person
   
   
   changeset:   3:10e46f2dcbf4
   bisect:      bad
   user:        person
   date:        Fri Jan 16 01:06:40 1970 +0000
   files:       c
   description:
   no user, no domain
   
   
   changeset:   4:bbe44766e73d
   bisect:      bad (implicit)
   branch:      foo
   user:        person
   date:        Sat Jan 17 04:53:20 1970 +0000
   description:
   new branch
   
   
   $ hg --color=debug log -T bisect -r 0:4
   [log.changeset changeset.public|changeset:   0:1e4e1b8f71e0]
   [log.bisect bisect.good|bisect:      good (implicit)]
   [log.user|user:        User Name <user@hostname>]
   [log.date|date:        Mon Jan 12 13:46:40 1970 +0000]
   [log.summary|summary:     line 1]
   
   [log.changeset changeset.public|changeset:   1:b608e9d1a3f0]
   [log.bisect bisect.good|bisect:      good]
   [log.user|user:        A. N. Other <other@place>]
   [log.date|date:        Tue Jan 13 17:33:20 1970 +0000]
   [log.summary|summary:     other 1]
   
   [log.changeset changeset.public|changeset:   2:97054abb4ab8]
   [log.bisect bisect.untested|bisect:      untested]
   [log.user|user:        other@place]
   [log.date|date:        Wed Jan 14 21:20:00 1970 +0000]
   [log.summary|summary:     no person]
   
   [log.changeset changeset.public|changeset:   3:10e46f2dcbf4]
   [log.bisect bisect.bad|bisect:      bad]
   [log.user|user:        person]
   [log.date|date:        Fri Jan 16 01:06:40 1970 +0000]
   [log.summary|summary:     no user, no domain]
   
   [log.changeset changeset.draft|changeset:   4:bbe44766e73d]
   [log.bisect bisect.bad|bisect:      bad (implicit)]
   [log.branch|branch:      foo]
   [log.user|user:        person]
   [log.date|date:        Sat Jan 17 04:53:20 1970 +0000]
   [log.summary|summary:     new branch]
   
   $ hg --color=debug log --debug -T bisect -r 0:4
   [log.changeset changeset.public|changeset:   0:1e4e1b8f71e05681d422154f5421e385fec3454f]
   [log.bisect bisect.good|bisect:      good (implicit)]
   [log.phase|phase:       public]
   [log.parent changeset.public|parent:      -1:0000000000000000000000000000000000000000]
   [log.parent changeset.public|parent:      -1:0000000000000000000000000000000000000000]
   [ui.debug log.manifest|manifest:    0:a0c8bcbbb45c63b90b70ad007bf38961f64f2af0]
   [log.user|user:        User Name <user@hostname>]
   [log.date|date:        Mon Jan 12 13:46:40 1970 +0000]
   [ui.debug log.files|files+:      a]
   [ui.debug log.extra|extra:       branch=default]
   [ui.note log.description|description:]
   [ui.note log.description|line 1
   line 2]
   
   
   [log.changeset changeset.public|changeset:   1:b608e9d1a3f0273ccf70fb85fd6866b3482bf965]
   [log.bisect bisect.good|bisect:      good]
   [log.phase|phase:       public]
   [log.parent changeset.public|parent:      0:1e4e1b8f71e05681d422154f5421e385fec3454f]
   [log.parent changeset.public|parent:      -1:0000000000000000000000000000000000000000]
   [ui.debug log.manifest|manifest:    1:4e8d705b1e53e3f9375e0e60dc7b525d8211fe55]
   [log.user|user:        A. N. Other <other@place>]
   [log.date|date:        Tue Jan 13 17:33:20 1970 +0000]
   [ui.debug log.files|files+:      b]
   [ui.debug log.extra|extra:       branch=default]
   [ui.note log.description|description:]
   [ui.note log.description|other 1
   other 2
   
   other 3]
   
   
   [log.changeset changeset.public|changeset:   2:97054abb4ab824450e9164180baf491ae0078465]
   [log.bisect bisect.untested|bisect:      untested]
   [log.phase|phase:       public]
   [log.parent changeset.public|parent:      1:b608e9d1a3f0273ccf70fb85fd6866b3482bf965]
   [log.parent changeset.public|parent:      -1:0000000000000000000000000000000000000000]
   [ui.debug log.manifest|manifest:    2:6e0e82995c35d0d57a52aca8da4e56139e06b4b1]
   [log.user|user:        other@place]
   [log.date|date:        Wed Jan 14 21:20:00 1970 +0000]
   [ui.debug log.files|files+:      c]
   [ui.debug log.extra|extra:       branch=default]
   [ui.note log.description|description:]
   [ui.note log.description|no person]
   
   
   [log.changeset changeset.public|changeset:   3:10e46f2dcbf4823578cf180f33ecf0b957964c47]
   [log.bisect bisect.bad|bisect:      bad]
   [log.phase|phase:       public]
   [log.parent changeset.public|parent:      2:97054abb4ab824450e9164180baf491ae0078465]
   [log.parent changeset.public|parent:      -1:0000000000000000000000000000000000000000]
   [ui.debug log.manifest|manifest:    3:cb5a1327723bada42f117e4c55a303246eaf9ccc]
   [log.user|user:        person]
   [log.date|date:        Fri Jan 16 01:06:40 1970 +0000]
   [ui.debug log.files|files:       c]
   [ui.debug log.extra|extra:       branch=default]
   [ui.note log.description|description:]
   [ui.note log.description|no user, no domain]
   
   
   [log.changeset changeset.draft|changeset:   4:bbe44766e73d5f11ed2177f1838de10c53ef3e74]
   [log.bisect bisect.bad|bisect:      bad (implicit)]
   [log.branch|branch:      foo]
   [log.phase|phase:       draft]
   [log.parent changeset.public|parent:      3:10e46f2dcbf4823578cf180f33ecf0b957964c47]
   [log.parent changeset.public|parent:      -1:0000000000000000000000000000000000000000]
   [ui.debug log.manifest|manifest:    3:cb5a1327723bada42f117e4c55a303246eaf9ccc]
   [log.user|user:        person]
   [log.date|date:        Sat Jan 17 04:53:20 1970 +0000]
   [ui.debug log.extra|extra:       branch=foo]
   [ui.note log.description|description:]
   [ui.note log.description|new branch]
   
   
   $ hg --color=debug log -v -T bisect -r 0:4
   [log.changeset changeset.public|changeset:   0:1e4e1b8f71e0]
   [log.bisect bisect.good|bisect:      good (implicit)]
   [log.user|user:        User Name <user@hostname>]
   [log.date|date:        Mon Jan 12 13:46:40 1970 +0000]
   [ui.note log.files|files:       a]
   [ui.note log.description|description:]
   [ui.note log.description|line 1
   line 2]
   
   
   [log.changeset changeset.public|changeset:   1:b608e9d1a3f0]
   [log.bisect bisect.good|bisect:      good]
   [log.user|user:        A. N. Other <other@place>]
   [log.date|date:        Tue Jan 13 17:33:20 1970 +0000]
   [ui.note log.files|files:       b]
   [ui.note log.description|description:]
   [ui.note log.description|other 1
   other 2
   
   other 3]
   
   
   [log.changeset changeset.public|changeset:   2:97054abb4ab8]
   [log.bisect bisect.untested|bisect:      untested]
   [log.user|user:        other@place]
   [log.date|date:        Wed Jan 14 21:20:00 1970 +0000]
   [ui.note log.files|files:       c]
   [ui.note log.description|description:]
   [ui.note log.description|no person]
   
   
   [log.changeset changeset.public|changeset:   3:10e46f2dcbf4]
   [log.bisect bisect.bad|bisect:      bad]
   [log.user|user:        person]
   [log.date|date:        Fri Jan 16 01:06:40 1970 +0000]
   [ui.note log.files|files:       c]
   [ui.note log.description|description:]
   [ui.note log.description|no user, no domain]
   
   
   [log.changeset changeset.draft|changeset:   4:bbe44766e73d]
   [log.bisect bisect.bad|bisect:      bad (implicit)]
   [log.branch|branch:      foo]
   [log.user|user:        person]
   [log.date|date:        Sat Jan 17 04:53:20 1970 +0000]
   [ui.note log.description|description:]
   [ui.note log.description|new branch]
   
   
   $ hg bisect --reset
 
 Error on syntax:
 
   $ echo 'x = "f' >> t
   $ hg log
   hg: parse error at t:3: unmatched quotes
   [255]
 
   $ hg log -T '{date'
   hg: parse error at 1: unterminated template expansion
   [255]
 
 Behind the scenes, this will throw TypeError
 
   $ hg log -l 3 --template '{date|obfuscate}\n'
   abort: template filter 'obfuscate' is not compatible with keyword 'date'
   [255]
 
 Behind the scenes, this will throw a ValueError
 
   $ hg log -l 3 --template 'line: {desc|shortdate}\n'
   abort: template filter 'shortdate' is not compatible with keyword 'desc'
   [255]
 
 Behind the scenes, this will throw AttributeError
 
   $ hg log -l 3 --template 'line: {date|escape}\n'
   abort: template filter 'escape' is not compatible with keyword 'date'
   [255]
 
   $ hg log -l 3 --template 'line: {extras|localdate}\n'
   hg: parse error: localdate expects a date information
   [255]
 
 Behind the scenes, this will throw ValueError
 
   $ hg tip --template '{author|email|date}\n'
   hg: parse error: date expects a date information
   [255]
 
   $ hg tip -T '{author|email|shortdate}\n'
   abort: template filter 'shortdate' is not compatible with keyword 'author'
   [255]
 
   $ hg tip -T '{get(extras, "branch")|shortdate}\n'
   abort: incompatible use of template filter 'shortdate'
   [255]
 
 Error in nested template:
 
   $ hg log -T '{"date'
   hg: parse error at 2: unterminated string
   [255]
 
   $ hg log -T '{"foo{date|?}"}'
   hg: parse error at 11: syntax error
   [255]
 
 Thrown an error if a template function doesn't exist
 
   $ hg tip --template '{foo()}\n'
   hg: parse error: unknown function 'foo'
   [255]
 
 Pass generator object created by template function to filter
 
   $ hg log -l 1 --template '{if(author, author)|user}\n'
   test
 
 Test index keyword:
 
   $ hg log -l 2 -T '{index + 10}{files % " {index}:{file}"}\n'
   10 0:a 1:b 2:fifth 3:fourth 4:third
   11 0:a
 
   $ hg branches -T '{index} {branch}\n'
   0 default
   1 foo
 
 Test diff function:
 
   $ hg diff -c 8
   diff -r 29114dbae42b -r 95c24699272e fourth
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/fourth	Wed Jan 01 10:01:00 2020 +0000
   @@ -0,0 +1,1 @@
   +second
   diff -r 29114dbae42b -r 95c24699272e second
   --- a/second	Mon Jan 12 13:46:40 1970 +0000
   +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +0,0 @@
   -second
   diff -r 29114dbae42b -r 95c24699272e third
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/third	Wed Jan 01 10:01:00 2020 +0000
   @@ -0,0 +1,1 @@
   +third
 
   $ hg log -r 8 -T "{diff()}"
   diff -r 29114dbae42b -r 95c24699272e fourth
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/fourth	Wed Jan 01 10:01:00 2020 +0000
   @@ -0,0 +1,1 @@
   +second
   diff -r 29114dbae42b -r 95c24699272e second
   --- a/second	Mon Jan 12 13:46:40 1970 +0000
   +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +0,0 @@
   -second
   diff -r 29114dbae42b -r 95c24699272e third
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/third	Wed Jan 01 10:01:00 2020 +0000
   @@ -0,0 +1,1 @@
   +third
 
   $ hg log -r 8 -T "{diff('glob:f*')}"
   diff -r 29114dbae42b -r 95c24699272e fourth
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/fourth	Wed Jan 01 10:01:00 2020 +0000
   @@ -0,0 +1,1 @@
   +second
 
   $ hg log -r 8 -T "{diff('', 'glob:f*')}"
   diff -r 29114dbae42b -r 95c24699272e second
   --- a/second	Mon Jan 12 13:46:40 1970 +0000
   +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
   @@ -1,1 +0,0 @@
   -second
   diff -r 29114dbae42b -r 95c24699272e third
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/third	Wed Jan 01 10:01:00 2020 +0000
   @@ -0,0 +1,1 @@
   +third
 
   $ hg log -r 8 -T "{diff('FOURTH'|lower)}"
   diff -r 29114dbae42b -r 95c24699272e fourth
   --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
   +++ b/fourth	Wed Jan 01 10:01:00 2020 +0000
   @@ -0,0 +1,1 @@
   +second
 
 ui verbosity:
 
   $ hg log -l1 -T '{verbosity}\n'
   
   $ hg log -l1 -T '{verbosity}\n' --debug
   debug
   $ hg log -l1 -T '{verbosity}\n' --quiet
   quiet
   $ hg log -l1 -T '{verbosity}\n' --verbose
   verbose
 
   $ cd ..
 
 
 latesttag:
 
   $ hg init latesttag
   $ cd latesttag
 
   $ echo a > file
   $ hg ci -Am a -d '0 0'
   adding file
 
   $ echo b >> file
   $ hg ci -m b -d '1 0'
 
   $ echo c >> head1
   $ hg ci -Am h1c -d '2 0'
   adding head1
 
   $ hg update -q 1
   $ echo d >> head2
   $ hg ci -Am h2d -d '3 0'
   adding head2
   created new head
 
   $ echo e >> head2
   $ hg ci -m h2e -d '4 0'
 
   $ hg merge -q
   $ hg ci -m merge -d '5 -3600'
 
 No tag set:
 
   $ hg log -G --template '{rev}: {latesttag}+{latesttagdistance}\n'
   @    5: null+5
   |\
   | o  4: null+4
   | |
   | o  3: null+3
   | |
   o |  2: null+3
   |/
   o  1: null+2
   |
   o  0: null+1
   
 
 One common tag: longest path wins for {latesttagdistance}:
 
   $ hg tag -r 1 -m t1 -d '6 0' t1
   $ hg log -G --template '{rev}: {latesttag}+{latesttagdistance}\n'
   @  6: t1+4
   |
   o    5: t1+3
   |\
   | o  4: t1+2
   | |
   | o  3: t1+1
   | |
   o |  2: t1+1
   |/
   o  1: t1+0
   |
   o  0: null+1
   
 
 One ancestor tag: closest wins:
 
   $ hg tag -r 2 -m t2 -d '7 0' t2
   $ hg log -G --template '{rev}: {latesttag}+{latesttagdistance}\n'
   @  7: t2+3
   |
   o  6: t2+2
   |
   o    5: t2+1
   |\
   | o  4: t1+2
   | |
   | o  3: t1+1
   | |
   o |  2: t2+0
   |/
   o  1: t1+0
   |
   o  0: null+1
   
 
 Two branch tags: more recent wins if same number of changes:
 
   $ hg tag -r 3 -m t3 -d '8 0' t3
   $ hg log -G --template '{rev}: {latesttag}+{latesttagdistance}\n'
   @  8: t3+5
   |
   o  7: t3+4
   |
   o  6: t3+3
   |
   o    5: t3+2
   |\
   | o  4: t3+1
   | |
   | o  3: t3+0
   | |
   o |  2: t2+0
   |/
   o  1: t1+0
   |
   o  0: null+1
   
 
 Two branch tags: fewest changes wins:
 
   $ hg tag -r 4 -m t4 -d '4 0' t4 # older than t2, but should not matter
   $ hg log -G --template "{rev}: {latesttag % '{tag}+{distance},{changes} '}\n"
   @  9: t4+5,6
   |
   o  8: t4+4,5
   |
   o  7: t4+3,4
   |
   o  6: t4+2,3
   |
   o    5: t4+1,2
   |\
   | o  4: t4+0,0
   | |
   | o  3: t3+0,0
   | |
   o |  2: t2+0,0
   |/
   o  1: t1+0,0
   |
   o  0: null+1,1
   
 
 Merged tag overrides:
 
   $ hg tag -r 5 -m t5 -d '9 0' t5
   $ hg tag -r 3 -m at3 -d '10 0' at3
   $ hg log -G --template '{rev}: {latesttag}+{latesttagdistance}\n'
   @  11: t5+6
   |
   o  10: t5+5
   |
   o  9: t5+4
   |
   o  8: t5+3
   |
   o  7: t5+2
   |
   o  6: t5+1
   |
   o    5: t5+0
   |\
   | o  4: t4+0
   | |
   | o  3: at3:t3+0
   | |
   o |  2: t2+0
   |/
   o  1: t1+0
   |
   o  0: null+1
   
 
   $ hg log -G --template "{rev}: {latesttag % '{tag}+{distance},{changes} '}\n"
   @  11: t5+6,6
   |
   o  10: t5+5,5
   |
   o  9: t5+4,4
   |
   o  8: t5+3,3
   |
   o  7: t5+2,2
   |
   o  6: t5+1,1
   |
   o    5: t5+0,0
   |\
   | o  4: t4+0,0
   | |
   | o  3: at3+0,0 t3+0,0
   | |
   o |  2: t2+0,0
   |/
   o  1: t1+0,0
   |
   o  0: null+1,1
   
 
   $ hg log -G --template "{rev}: {latesttag('re:^t[13]$') % '{tag}, C: {changes}, D: {distance}'}\n"
   @  11: t3, C: 9, D: 8
   |
   o  10: t3, C: 8, D: 7
   |
   o  9: t3, C: 7, D: 6
   |
   o  8: t3, C: 6, D: 5
   |
   o  7: t3, C: 5, D: 4
   |
   o  6: t3, C: 4, D: 3
   |
   o    5: t3, C: 3, D: 2
   |\
   | o  4: t3, C: 1, D: 1
   | |
   | o  3: t3, C: 0, D: 0
   | |
   o |  2: t1, C: 1, D: 1
   |/
   o  1: t1, C: 0, D: 0
   |
   o  0: null, C: 1, D: 1
   
 
   $ cd ..
 
 
 Style path expansion: issue1948 - ui.style option doesn't work on OSX
 if it is a relative path
 
   $ mkdir -p home/styles
 
   $ cat > home/styles/teststyle <<EOF
   > changeset = 'test {rev}:{node|short}\n'
   > EOF
 
   $ HOME=`pwd`/home; export HOME
 
   $ cat > latesttag/.hg/hgrc <<EOF
   > [ui]
   > style = ~/styles/teststyle
   > EOF
 
   $ hg -R latesttag tip
   test 11:97e5943b523a
 
 Test recursive showlist template (issue1989):
 
   $ cat > style1989 <<EOF
   > changeset = '{file_mods}{manifest}{extras}'
   > file_mod  = 'M|{author|person}\n'
   > manifest = '{rev},{author}\n'
   > extra = '{key}: {author}\n'
   > EOF
 
   $ hg -R latesttag log -r tip --style=style1989
   M|test
   11,test
   branch: test
 
 Test new-style inline templating:
 
   $ hg log -R latesttag -r tip --template 'modified files: {file_mods % " {file}\n"}\n'
   modified files:  .hgtags
   
 
   $ hg log -R latesttag -r tip -T '{rev % "a"}\n'
   hg: parse error: keyword 'rev' is not iterable
   [255]
   $ hg log -R latesttag -r tip -T '{get(extras, "unknown") % "a"}\n'
   hg: parse error: None is not iterable
   [255]
 
 Test new-style inline templating of non-list/dict type:
 
   $ hg log -R latesttag -r tip -T '{manifest}\n'
   11:2bc6e9006ce2
   $ hg log -R latesttag -r tip -T 'string length: {manifest|count}\n'
   string length: 15
   $ hg log -R latesttag -r tip -T '{manifest % "{rev}:{node}"}\n'
   11:2bc6e9006ce29882383a22d39fd1f4e66dd3e2fc
 
   $ hg log -R latesttag -r tip -T '{get(extras, "branch") % "{key}: {value}\n"}'
   branch: default
   $ hg log -R latesttag -r tip -T '{get(extras, "unknown") % "{key}\n"}'
   hg: parse error: None is not iterable
   [255]
   $ hg log -R latesttag -r tip -T '{min(extras) % "{key}: {value}\n"}'
   branch: default
   $ hg log -R latesttag -l1 -T '{min(revset("0:9")) % "{rev}:{node|short}\n"}'
   0:ce3cec86e6c2
   $ hg log -R latesttag -l1 -T '{max(revset("0:9")) % "{rev}:{node|short}\n"}'
   9:fbc7cd862e9c
 
 Test manifest/get() can be join()-ed as before, though it's silly:
 
   $ hg log -R latesttag -r tip -T '{join(manifest, "")}\n'
   11:2bc6e9006ce2
   $ hg log -R latesttag -r tip -T '{join(get(extras, "branch"), "")}\n'
   default
 
 Test min/max of integers
 
   $ hg log -R latesttag -l1 -T '{min(revset("9:10"))}\n'
   9
   $ hg log -R latesttag -l1 -T '{max(revset("9:10"))}\n'
   10
 
 Test dot operator precedence:
 
   $ hg debugtemplate -R latesttag -r0 -v '{manifest.node|short}\n'
   (template
     (|
       (.
         (symbol 'manifest')
         (symbol 'node'))
       (symbol 'short'))
     (string '\n'))
   89f4071fec70
 
  (the following examples are invalid, but seem natural in parsing POV)
 
   $ hg debugtemplate -R latesttag -r0 -v '{foo|bar.baz}\n' 2> /dev/null
   (template
     (|
       (symbol 'foo')
       (.
         (symbol 'bar')
         (symbol 'baz')))
     (string '\n'))
   [255]
   $ hg debugtemplate -R latesttag -r0 -v '{foo.bar()}\n' 2> /dev/null
   (template
     (.
       (symbol 'foo')
       (func
         (symbol 'bar')
         None))
     (string '\n'))
   [255]
 
 Test evaluation of dot operator:
 
   $ hg log -R latesttag -l1 -T '{min(revset("0:9")).node}\n'
   ce3cec86e6c26bd9bdfc590a6b92abc9680f1796
   $ hg log -R latesttag -r0 -T '{extras.branch}\n'
   default
 
   $ hg log -R latesttag -l1 -T '{author.invalid}\n'
   hg: parse error: keyword 'author' has no member
   [255]
   $ hg log -R latesttag -l1 -T '{min("abc").invalid}\n'
   hg: parse error: 'a' has no member
   [255]
 
 Test the sub function of templating for expansion:
 
   $ hg log -R latesttag -r 10 --template '{sub("[0-9]", "x", "{rev}")}\n'
   xx
 
   $ hg log -R latesttag -r 10 -T '{sub("[", "x", rev)}\n'
   hg: parse error: sub got an invalid pattern: [
   [255]
   $ hg log -R latesttag -r 10 -T '{sub("[0-9]", r"\1", rev)}\n'
   hg: parse error: sub got an invalid replacement: \1
   [255]
 
 Test the strip function with chars specified:
 
   $ hg log -R latesttag --template '{desc}\n'
   at3
   t5
   t4
   t3
   t2
   t1
   merge
   h2e
   h2d
   h1c
   b
   a
 
   $ hg log -R latesttag --template '{strip(desc, "te")}\n'
   at3
   5
   4
   3
   2
   1
   merg
   h2
   h2d
   h1c
   b
   a
 
 Test date format:
 
   $ hg log -R latesttag --template 'date: {date(date, "%y %m %d %S %z")}\n'
   date: 70 01 01 10 +0000
   date: 70 01 01 09 +0000
   date: 70 01 01 04 +0000
   date: 70 01 01 08 +0000
   date: 70 01 01 07 +0000
   date: 70 01 01 06 +0000
   date: 70 01 01 05 +0100
   date: 70 01 01 04 +0000
   date: 70 01 01 03 +0000
   date: 70 01 01 02 +0000
   date: 70 01 01 01 +0000
   date: 70 01 01 00 +0000
 
 Test invalid date:
 
   $ hg log -R latesttag -T '{date(rev)}\n'
   hg: parse error: date expects a date information
   [255]
 
 Test integer literal:
 
   $ hg debugtemplate -v '{(0)}\n'
   (template
     (group
       (integer '0'))
     (string '\n'))
   0
   $ hg debugtemplate -v '{(123)}\n'
   (template
     (group
       (integer '123'))
     (string '\n'))
   123
   $ hg debugtemplate -v '{(-4)}\n'
   (template
     (group
       (negate
         (integer '4')))
     (string '\n'))
   -4
   $ hg debugtemplate '{(-)}\n'
   hg: parse error at 3: not a prefix: )
   [255]
   $ hg debugtemplate '{(-a)}\n'
   hg: parse error: negation needs an integer argument
   [255]
 
 top-level integer literal is interpreted as symbol (i.e. variable name):
 
   $ hg debugtemplate -D 1=one -v '{1}\n'
   (template
     (integer '1')
     (string '\n'))
   one
   $ hg debugtemplate -D 1=one -v '{if("t", "{1}")}\n'
   (template
     (func
       (symbol 'if')
       (list
         (string 't')
         (template
           (integer '1'))))
     (string '\n'))
   one
   $ hg debugtemplate -D 1=one -v '{1|stringify}\n'
   (template
     (|
       (integer '1')
       (symbol 'stringify'))
     (string '\n'))
   one
 
 unless explicit symbol is expected:
 
   $ hg log -Ra -r0 -T '{desc|1}\n'
   hg: parse error: expected a symbol, got 'integer'
   [255]
   $ hg log -Ra -r0 -T '{1()}\n'
   hg: parse error: expected a symbol, got 'integer'
   [255]
 
 Test string literal:
 
   $ hg debugtemplate -Ra -r0 -v '{"string with no template fragment"}\n'
   (template
     (string 'string with no template fragment')
     (string '\n'))
   string with no template fragment
   $ hg debugtemplate -Ra -r0 -v '{"template: {rev}"}\n'
   (template
     (template
       (string 'template: ')
       (symbol 'rev'))
     (string '\n'))
   template: 0
   $ hg debugtemplate -Ra -r0 -v '{r"rawstring: {rev}"}\n'
   (template
     (string 'rawstring: {rev}')
     (string '\n'))
   rawstring: {rev}
   $ hg debugtemplate -Ra -r0 -v '{files % r"rawstring: {file}"}\n'
   (template
     (%
       (symbol 'files')
       (string 'rawstring: {file}'))
     (string '\n'))
   rawstring: {file}
 
 Test string escaping:
 
   $ hg log -R latesttag -r 0 --template '>\n<>\\n<{if(rev, "[>\n<>\\n<]")}>\n<>\\n<\n'
   >
   <>\n<[>
   <>\n<]>
   <>\n<
 
   $ hg log -R latesttag -r 0 \
   > --config ui.logtemplate='>\n<>\\n<{if(rev, "[>\n<>\\n<]")}>\n<>\\n<\n'
   >
   <>\n<[>
   <>\n<]>
   <>\n<
 
   $ hg log -R latesttag -r 0 -T esc \
   > --config templates.esc='>\n<>\\n<{if(rev, "[>\n<>\\n<]")}>\n<>\\n<\n'
   >
   <>\n<[>
   <>\n<]>
   <>\n<
 
   $ cat <<'EOF' > esctmpl
   > changeset = '>\n<>\\n<{if(rev, "[>\n<>\\n<]")}>\n<>\\n<\n'
   > EOF
   $ hg log -R latesttag -r 0 --style ./esctmpl
   >
   <>\n<[>
   <>\n<]>
   <>\n<
 
 Test string escaping of quotes:
 
   $ hg log -Ra -r0 -T '{"\""}\n'
   "
   $ hg log -Ra -r0 -T '{"\\\""}\n'
   \"
   $ hg log -Ra -r0 -T '{r"\""}\n'
   \"
   $ hg log -Ra -r0 -T '{r"\\\""}\n'
   \\\"
 
 
   $ hg log -Ra -r0 -T '{"\""}\n'
   "
   $ hg log -Ra -r0 -T '{"\\\""}\n'
   \"
   $ hg log -Ra -r0 -T '{r"\""}\n'
   \"
   $ hg log -Ra -r0 -T '{r"\\\""}\n'
   \\\"
 
 Test exception in quoted template. single backslash before quotation mark is
 stripped before parsing:
 
   $ cat <<'EOF' > escquotetmpl
   > changeset = "\" \\" \\\" \\\\" {files % \"{file}\"}\n"
   > EOF
   $ cd latesttag
   $ hg log -r 2 --style ../escquotetmpl
   " \" \" \\" head1
 
   $ hg log -r 2 -T esc --config templates.esc='"{\"valid\"}\n"'
   valid
   $ hg log -r 2 -T esc --config templates.esc="'"'{\'"'"'valid\'"'"'}\n'"'"
   valid
 
 Test compatibility with 2.9.2-3.4 of escaped quoted strings in nested
 _evalifliteral() templates (issue4733):
 
   $ hg log -r 2 -T '{if(rev, "\"{rev}")}\n'
   "2
   $ hg log -r 2 -T '{if(rev, "{if(rev, \"\\\"{rev}\")}")}\n'
   "2
   $ hg log -r 2 -T '{if(rev, "{if(rev, \"{if(rev, \\\"\\\\\\\"{rev}\\\")}\")}")}\n'
   "2
 
   $ hg log -r 2 -T '{if(rev, "\\\"")}\n'
   \"
   $ hg log -r 2 -T '{if(rev, "{if(rev, \"\\\\\\\"\")}")}\n'
   \"
   $ hg log -r 2 -T '{if(rev, "{if(rev, \"{if(rev, \\\"\\\\\\\\\\\\\\\"\\\")}\")}")}\n'
   \"
 
   $ hg log -r 2 -T '{if(rev, r"\\\"")}\n'
   \\\"
   $ hg log -r 2 -T '{if(rev, "{if(rev, r\"\\\\\\\"\")}")}\n'
   \\\"
   $ hg log -r 2 -T '{if(rev, "{if(rev, \"{if(rev, r\\\"\\\\\\\\\\\\\\\"\\\")}\")}")}\n'
   \\\"
 
 escaped single quotes and errors:
 
   $ hg log -r 2 -T "{if(rev, '{if(rev, \'foo\')}')}"'\n'
   foo
   $ hg log -r 2 -T "{if(rev, '{if(rev, r\'foo\')}')}"'\n'
   foo
   $ hg log -r 2 -T '{if(rev, "{if(rev, \")}")}\n'
   hg: parse error at 21: unterminated string
   [255]
   $ hg log -r 2 -T '{if(rev, \"\\"")}\n'
   hg: parse error: trailing \ in string
   [255]
   $ hg log -r 2 -T '{if(rev, r\"\\"")}\n'
   hg: parse error: trailing \ in string
   [255]
 
   $ cd ..
 
 Test leading backslashes:
 
   $ cd latesttag
   $ hg log -r 2 -T '\{rev} {files % "\{file}"}\n'
   {rev} {file}
   $ hg log -r 2 -T '\\{rev} {files % "\\{file}"}\n'
   \2 \head1
   $ hg log -r 2 -T '\\\{rev} {files % "\\\{file}"}\n'
   \{rev} \{file}
   $ cd ..
 
 Test leading backslashes in "if" expression (issue4714):
 
   $ cd latesttag
   $ hg log -r 2 -T '{if("1", "\{rev}")} {if("1", r"\{rev}")}\n'
   {rev} \{rev}
   $ hg log -r 2 -T '{if("1", "\\{rev}")} {if("1", r"\\{rev}")}\n'
   \2 \\{rev}
   $ hg log -r 2 -T '{if("1", "\\\{rev}")} {if("1", r"\\\{rev}")}\n'
   \{rev} \\\{rev}
   $ cd ..
 
 "string-escape"-ed "\x5c\x786e" becomes r"\x6e" (once) or r"n" (twice)
 
   $ hg log -R a -r 0 --template '{if("1", "\x5c\x786e", "NG")}\n'
   \x6e
   $ hg log -R a -r 0 --template '{if("1", r"\x5c\x786e", "NG")}\n'
   \x5c\x786e
   $ hg log -R a -r 0 --template '{if("", "NG", "\x5c\x786e")}\n'
   \x6e
   $ hg log -R a -r 0 --template '{if("", "NG", r"\x5c\x786e")}\n'
   \x5c\x786e
 
   $ hg log -R a -r 2 --template '{ifeq("no perso\x6e", desc, "\x5c\x786e", "NG")}\n'
   \x6e
   $ hg log -R a -r 2 --template '{ifeq(r"no perso\x6e", desc, "NG", r"\x5c\x786e")}\n'
   \x5c\x786e
   $ hg log -R a -r 2 --template '{ifeq(desc, "no perso\x6e", "\x5c\x786e", "NG")}\n'
   \x6e
   $ hg log -R a -r 2 --template '{ifeq(desc, r"no perso\x6e", "NG", r"\x5c\x786e")}\n'
   \x5c\x786e
 
   $ hg log -R a -r 8 --template '{join(files, "\n")}\n'
   fourth
   second
   third
   $ hg log -R a -r 8 --template '{join(files, r"\n")}\n'
   fourth\nsecond\nthird
 
   $ hg log -R a -r 2 --template '{rstdoc("1st\n\n2nd", "htm\x6c")}'
   <p>
   1st
   </p>
   <p>
   2nd
   </p>
   $ hg log -R a -r 2 --template '{rstdoc(r"1st\n\n2nd", "html")}'
   <p>
   1st\n\n2nd
   </p>
   $ hg log -R a -r 2 --template '{rstdoc("1st\n\n2nd", r"htm\x6c")}'
   1st
   
   2nd
 
   $ hg log -R a -r 2 --template '{strip(desc, "\x6e")}\n'
   o perso
   $ hg log -R a -r 2 --template '{strip(desc, r"\x6e")}\n'
   no person
   $ hg log -R a -r 2 --template '{strip("no perso\x6e", "\x6e")}\n'
   o perso
   $ hg log -R a -r 2 --template '{strip(r"no perso\x6e", r"\x6e")}\n'
   no perso
 
   $ hg log -R a -r 2 --template '{sub("\\x6e", "\x2d", desc)}\n'
   -o perso-
   $ hg log -R a -r 2 --template '{sub(r"\\x6e", "-", desc)}\n'
   no person
   $ hg log -R a -r 2 --template '{sub("n", r"\x2d", desc)}\n'
   \x2do perso\x2d
   $ hg log -R a -r 2 --template '{sub("n", "\x2d", "no perso\x6e")}\n'
   -o perso-
   $ hg log -R a -r 2 --template '{sub("n", r"\x2d", r"no perso\x6e")}\n'
   \x2do perso\x6e
 
   $ hg log -R a -r 8 --template '{files % "{file}\n"}'
   fourth
   second
   third
 
 Test string escaping in nested expression:
 
   $ hg log -R a -r 8 --template '{ifeq(r"\x6e", if("1", "\x5c\x786e"), join(files, "\x5c\x786e"))}\n'
   fourth\x6esecond\x6ethird
   $ hg log -R a -r 8 --template '{ifeq(if("1", r"\x6e"), "\x5c\x786e", join(files, "\x5c\x786e"))}\n'
   fourth\x6esecond\x6ethird
 
   $ hg log -R a -r 8 --template '{join(files, ifeq(branch, "default", "\x5c\x786e"))}\n'
   fourth\x6esecond\x6ethird
   $ hg log -R a -r 8 --template '{join(files, ifeq(branch, "default", r"\x5c\x786e"))}\n'
   fourth\x5c\x786esecond\x5c\x786ethird
 
   $ hg log -R a -r 3:4 --template '{rev}:{sub(if("1", "\x6e"), ifeq(branch, "foo", r"\x5c\x786e", "\x5c\x786e"), desc)}\n'
   3:\x6eo user, \x6eo domai\x6e
   4:\x5c\x786eew bra\x5c\x786ech
 
 Test quotes in nested expression are evaluated just like a $(command)
 substitution in POSIX shells:
 
   $ hg log -R a -r 8 -T '{"{"{rev}:{node|short}"}"}\n'
   8:95c24699272e
   $ hg log -R a -r 8 -T '{"{"\{{rev}} \"{node|short}\""}"}\n'
   {8} "95c24699272e"
 
 Test recursive evaluation:
 
   $ hg init r
   $ cd r
   $ echo a > a
   $ hg ci -Am '{rev}'
   adding a
   $ hg log -r 0 --template '{if(rev, desc)}\n'
   {rev}
   $ hg log -r 0 --template '{if(rev, "{author} {rev}")}\n'
   test 0
 
   $ hg branch -q 'text.{rev}'
   $ echo aa >> aa
   $ hg ci -u '{node|short}' -m 'desc to be wrapped desc to be wrapped'
 
   $ hg log -l1 --template '{fill(desc, "20", author, branch)}'
   {node|short}desc to
   text.{rev}be wrapped
   text.{rev}desc to be
   text.{rev}wrapped (no-eol)
   $ hg log -l1 --template '{fill(desc, "20", "{node|short}:", "text.{rev}:")}'
   bcc7ff960b8e:desc to
   text.1:be wrapped
   text.1:desc to be
   text.1:wrapped (no-eol)
   $ hg log -l1 -T '{fill(desc, date, "", "")}\n'
   hg: parse error: fill expects an integer width
   [255]
 
   $ COLUMNS=25 hg log -l1 --template '{fill(desc, termwidth, "{node|short}:", "termwidth.{rev}:")}'
   bcc7ff960b8e:desc to be
   termwidth.1:wrapped desc
   termwidth.1:to be wrapped (no-eol)
 
   $ hg log -l 1 --template '{sub(r"[0-9]", "-", author)}'
   {node|short} (no-eol)
   $ hg log -l 1 --template '{sub(r"[0-9]", "-", "{node|short}")}'
   bcc-ff---b-e (no-eol)
 
   $ cat >> .hg/hgrc <<EOF
   > [extensions]
   > color=
   > [color]
   > mode=ansi
   > text.{rev} = red
   > text.1 = green
   > EOF
   $ hg log --color=always -l 1 --template '{label(branch, "text\n")}'
   \x1b[0;31mtext\x1b[0m (esc)
   $ hg log --color=always -l 1 --template '{label("text.{rev}", "text\n")}'
   \x1b[0;32mtext\x1b[0m (esc)
 
 color effect can be specified without quoting:
 
   $ hg log --color=always -l 1 --template '{label(red, "text\n")}'
   \x1b[0;31mtext\x1b[0m (esc)
 
 color effects can be nested (issue5413)
 
   $ hg debugtemplate --color=always \
   > '{label(red, "red{label(magenta, "ma{label(cyan, "cyan")}{label(yellow, "yellow")}genta")}")}\n'
   \x1b[0;31mred\x1b[0;35mma\x1b[0;36mcyan\x1b[0m\x1b[0;31m\x1b[0;35m\x1b[0;33myellow\x1b[0m\x1b[0;31m\x1b[0;35mgenta\x1b[0m (esc)
 
 pad() should interact well with color codes (issue5416)
 
   $ hg debugtemplate --color=always \
   > '{pad(label(red, "red"), 5, label(cyan, "-"))}\n'
   \x1b[0;31mred\x1b[0m\x1b[0;36m-\x1b[0m\x1b[0;36m-\x1b[0m (esc)
 
 label should be no-op if color is disabled:
 
   $ hg log --color=never -l 1 --template '{label(red, "text\n")}'
   text
   $ hg log --config extensions.color=! -l 1 --template '{label(red, "text\n")}'
   text
 
 Test branches inside if statement:
 
   $ hg log -r 0 --template '{if(branches, "yes", "no")}\n'
   no
 
 Test dict constructor:
 
   $ hg log -r 0 -T '{dict(y=node|short, x=rev)}\n'
   y=f7769ec2ab97 x=0
   $ hg log -r 0 -T '{dict(x=rev, y=node|short) % "{key}={value}\n"}'
   x=0
   y=f7769ec2ab97
   $ hg log -r 0 -T '{dict(x=rev, y=node|short)|json}\n'
   {"x": 0, "y": "f7769ec2ab97"}
   $ hg log -r 0 -T '{dict()|json}\n'
   {}
 
   $ hg log -r 0 -T '{dict(rev, node=node|short)}\n'
   rev=0 node=f7769ec2ab97
   $ hg log -r 0 -T '{dict(rev, node|short)}\n'
   rev=0 node=f7769ec2ab97
 
   $ hg log -r 0 -T '{dict(rev, rev=rev)}\n'
   hg: parse error: duplicated dict key 'rev' inferred
   [255]
   $ hg log -r 0 -T '{dict(node, node|short)}\n'
   hg: parse error: duplicated dict key 'node' inferred
   [255]
   $ hg log -r 0 -T '{dict(1 + 2)}'
   hg: parse error: dict key cannot be inferred
   [255]
 
   $ hg log -r 0 -T '{dict(x=rev, x=node)}'
   hg: parse error: dict got multiple values for keyword argument 'x'
   [255]
 
 Test get function:
 
   $ hg log -r 0 --template '{get(extras, "branch")}\n'
   default
   $ hg log -r 0 --template '{get(extras, "br{"anch"}")}\n'
   default
   $ hg log -r 0 --template '{get(files, "should_fail")}\n'
   hg: parse error: get() expects a dict as first argument
   [255]
 
 Test json filter applied to hybrid object:
 
   $ hg log -r0 -T '{files|json}\n'
   ["a"]
   $ hg log -r0 -T '{extras|json}\n'
   {"branch": "default"}
 
 Test localdate(date, tz) function:
 
   $ TZ=JST-09 hg log -r0 -T '{date|localdate|isodate}\n'
   1970-01-01 09:00 +0900
   $ TZ=JST-09 hg log -r0 -T '{localdate(date, "UTC")|isodate}\n'
   1970-01-01 00:00 +0000
   $ TZ=JST-09 hg log -r0 -T '{localdate(date, "blahUTC")|isodate}\n'
   hg: parse error: localdate expects a timezone
   [255]
   $ TZ=JST-09 hg log -r0 -T '{localdate(date, "+0200")|isodate}\n'
   1970-01-01 02:00 +0200
   $ TZ=JST-09 hg log -r0 -T '{localdate(date, "0")|isodate}\n'
   1970-01-01 00:00 +0000
   $ TZ=JST-09 hg log -r0 -T '{localdate(date, 0)|isodate}\n'
   1970-01-01 00:00 +0000
   $ hg log -r0 -T '{localdate(date, "invalid")|isodate}\n'
   hg: parse error: localdate expects a timezone
   [255]
   $ hg log -r0 -T '{localdate(date, date)|isodate}\n'
   hg: parse error: localdate expects a timezone
   [255]
 
 Test shortest(node) function:
 
   $ echo b > b
   $ hg ci -qAm b
   $ hg log --template '{shortest(node)}\n'
   e777
   bcc7
   f776
   $ hg log --template '{shortest(node, 10)}\n'
   e777603221
   bcc7ff960b
   f7769ec2ab
   $ hg log --template '{node|shortest}\n' -l1
   e777
 
   $ hg log -r 0 -T '{shortest(node, "1{"0"}")}\n'
   f7769ec2ab
   $ hg log -r 0 -T '{shortest(node, "not an int")}\n'
   hg: parse error: shortest() expects an integer minlength
   [255]
 
   $ hg log -r 'wdir()' -T '{node|shortest}\n'
   ffff
 
   $ cd ..
 
 Test shortest(node) with the repo having short hash collision:
 
   $ hg init hashcollision
   $ cd hashcollision
   $ cat <<EOF >> .hg/hgrc
   > [experimental]
   > evolution.createmarkers=True
   > EOF
   $ echo 0 > a
   $ hg ci -qAm 0
   $ for i in 17 129 248 242 480 580 617 1057 2857 4025; do
   >   hg up -q 0
   >   echo $i > a
   >   hg ci -qm $i
   > done
   $ hg up -q null
   $ hg log -r0: -T '{rev}:{node}\n'
   0:b4e73ffab476aa0ee32ed81ca51e07169844bc6a
   1:11424df6dc1dd4ea255eae2b58eaca7831973bbc
   2:11407b3f1b9c3e76a79c1ec5373924df096f0499
   3:11dd92fe0f39dfdaacdaa5f3997edc533875cfc4
   4:10776689e627b465361ad5c296a20a487e153ca4
   5:a00be79088084cb3aff086ab799f8790e01a976b
   6:a0b0acd79b4498d0052993d35a6a748dd51d13e6
   7:a0457b3450b8e1b778f1163b31a435802987fe5d
   8:c56256a09cd28e5764f32e8e2810d0f01e2e357a
   9:c5623987d205cd6d9d8389bfc40fff9dbb670b48
   10:c562ddd9c94164376c20b86b0b4991636a3bf84f
   $ hg debugobsolete a00be79088084cb3aff086ab799f8790e01a976b
   obsoleted 1 changesets
   $ hg debugobsolete c5623987d205cd6d9d8389bfc40fff9dbb670b48
   obsoleted 1 changesets
   $ hg debugobsolete c562ddd9c94164376c20b86b0b4991636a3bf84f
   obsoleted 1 changesets
 
  nodes starting with '11' (we don't have the revision number '11' though)
 
   $ hg log -r 1:3 -T '{rev}:{shortest(node, 0)}\n'
   1:1142
   2:1140
   3:11d
 
  '5:a00' is hidden, but still we have two nodes starting with 'a0'
 
   $ hg log -r 6:7 -T '{rev}:{shortest(node, 0)}\n'
   6:a0b
   7:a04
 
  node '10' conflicts with the revision number '10' even if it is hidden
  (we could exclude hidden revision numbers, but currently we don't)
 
   $ hg log -r 4 -T '{rev}:{shortest(node, 0)}\n'
   4:107
   $ hg log -r 4 -T '{rev}:{shortest(node, 0)}\n' --hidden
   4:107
 
  node 'c562' should be unique if the other 'c562' nodes are hidden
  (but we don't try the slow path to filter out hidden nodes for now)
 
   $ hg log -r 8 -T '{rev}:{node|shortest}\n'
   8:c5625
   $ hg log -r 8:10 -T '{rev}:{node|shortest}\n' --hidden
   8:c5625
   9:c5623
   10:c562d
 
   $ cd ..
 
 Test pad function
 
   $ cd r
 
   $ hg log --template '{pad(rev, 20)} {author|user}\n'
   2                    test
   1                    {node|short}
   0                    test
 
   $ hg log --template '{pad(rev, 20, " ", True)} {author|user}\n'
                      2 test
                      1 {node|short}
                      0 test
 
   $ hg log --template '{pad(rev, 20, "-", False)} {author|user}\n'
   2------------------- test
   1------------------- {node|short}
   0------------------- test
 
 Test template string in pad function
 
   $ hg log -r 0 -T '{pad("\{{rev}}", 10)} {author|user}\n'
   {0}        test
 
   $ hg log -r 0 -T '{pad(r"\{rev}", 10)} {author|user}\n'
   \{rev}     test
 
 Test width argument passed to pad function
 
   $ hg log -r 0 -T '{pad(rev, "1{"0"}")} {author|user}\n'
   0          test
   $ hg log -r 0 -T '{pad(rev, "not an int")}\n'
   hg: parse error: pad() expects an integer width
   [255]
 
 Test invalid fillchar passed to pad function
 
   $ hg log -r 0 -T '{pad(rev, 10, "")}\n'
   hg: parse error: pad() expects a single fill character
   [255]
   $ hg log -r 0 -T '{pad(rev, 10, "--")}\n'
   hg: parse error: pad() expects a single fill character
   [255]
 
 Test boolean argument passed to pad function
 
  no crash
 
   $ hg log -r 0 -T '{pad(rev, 10, "-", "f{"oo"}")}\n'
   ---------0
 
  string/literal
 
   $ hg log -r 0 -T '{pad(rev, 10, "-", "false")}\n'
   ---------0
   $ hg log -r 0 -T '{pad(rev, 10, "-", false)}\n'
   0---------
   $ hg log -r 0 -T '{pad(rev, 10, "-", "")}\n'
   0---------
 
  unknown keyword is evaluated to ''
 
   $ hg log -r 0 -T '{pad(rev, 10, "-", unknownkeyword)}\n'
   0---------
 
 Test separate function
 
   $ hg log -r 0 -T '{separate("-", "", "a", "b", "", "", "c", "")}\n'
   a-b-c
   $ hg log -r 0 -T '{separate(" ", "{rev}:{node|short}", author|user, branch)}\n'
   0:f7769ec2ab97 test default
   $ hg log -r 0 --color=always -T '{separate(" ", "a", label(red, "b"), "c", label(red, ""), "d")}\n'
   a \x1b[0;31mb\x1b[0m c d (esc)
 
 Test boolean expression/literal passed to if function
 
   $ hg log -r 0 -T '{if(rev, "rev 0 is True")}\n'
   rev 0 is True
   $ hg log -r 0 -T '{if(0, "literal 0 is True as well")}\n'
   literal 0 is True as well
   $ hg log -r 0 -T '{if("", "", "empty string is False")}\n'
   empty string is False
   $ hg log -r 0 -T '{if(revset(r"0 - 0"), "", "empty list is False")}\n'
   empty list is False
   $ hg log -r 0 -T '{if(true, "true is True")}\n'
   true is True
   $ hg log -r 0 -T '{if(false, "", "false is False")}\n'
   false is False
   $ hg log -r 0 -T '{if("false", "non-empty string is True")}\n'
   non-empty string is True
 
 Test ifcontains function
 
   $ hg log --template '{rev} {ifcontains(rev, "2 two 0", "is in the string", "is not")}\n'
   2 is in the string
   1 is not
   0 is in the string
 
   $ hg log -T '{rev} {ifcontains(rev, "2 two{" 0"}", "is in the string", "is not")}\n'
   2 is in the string
   1 is not
   0 is in the string
 
   $ hg log --template '{rev} {ifcontains("a", file_adds, "added a", "did not add a")}\n'
   2 did not add a
   1 did not add a
   0 added a
 
   $ hg log --debug -T '{rev}{ifcontains(1, parents, " is parent of 1")}\n'
   2 is parent of 1
   1
   0
 
 Test revset function
 
   $ hg log --template '{rev} {ifcontains(rev, revset("."), "current rev", "not current rev")}\n'
   2 current rev
   1 not current rev
   0 not current rev
 
   $ hg log --template '{rev} {ifcontains(rev, revset(". + .^"), "match rev", "not match rev")}\n'
   2 match rev
   1 match rev
   0 not match rev
 
   $ hg log -T '{ifcontains(desc, revset(":"), "", "type not match")}\n' -l1
   type not match
 
   $ hg log --template '{rev} Parents: {revset("parents(%s)", rev)}\n'
   2 Parents: 1
   1 Parents: 0
   0 Parents: 
 
   $ cat >> .hg/hgrc <<EOF
   > [revsetalias]
   > myparents(\$1) = parents(\$1)
   > EOF
   $ hg log --template '{rev} Parents: {revset("myparents(%s)", rev)}\n'
   2 Parents: 1
   1 Parents: 0
   0 Parents: 
 
   $ hg log --template 'Rev: {rev}\n{revset("::%s", rev) % "Ancestor: {revision}\n"}\n'
   Rev: 2
   Ancestor: 0
   Ancestor: 1
   Ancestor: 2
   
   Rev: 1
   Ancestor: 0
   Ancestor: 1
   
   Rev: 0
   Ancestor: 0
   
   $ hg log --template '{revset("TIP"|lower)}\n' -l1
   2
 
   $ hg log -T '{revset("%s", "t{"ip"}")}\n' -l1
   2
 
  a list template is evaluated for each item of revset/parents
 
   $ hg log -T '{rev} p: {revset("p1(%s)", rev) % "{rev}:{node|short}"}\n'
   2 p: 1:bcc7ff960b8e
   1 p: 0:f7769ec2ab97
   0 p: 
 
   $ hg log --debug -T '{rev} p:{parents % " {rev}:{node|short}"}\n'
   2 p: 1:bcc7ff960b8e -1:000000000000
   1 p: 0:f7769ec2ab97 -1:000000000000
   0 p: -1:000000000000 -1:000000000000
 
  therefore, 'revcache' should be recreated for each rev
 
   $ hg log -T '{rev} {file_adds}\np {revset("p1(%s)", rev) % "{file_adds}"}\n'
   2 aa b
   p 
   1 
   p a
   0 a
   p 
 
   $ hg log --debug -T '{rev} {file_adds}\np {parents % "{file_adds}"}\n'
   2 aa b
   p 
   1 
   p a
   0 a
   p 
 
 a revset item must be evaluated as an integer revision, not an offset from tip
 
   $ hg log -l 1 -T '{revset("null") % "{rev}:{node|short}"}\n'
   -1:000000000000
   $ hg log -l 1 -T '{revset("%s", "null") % "{rev}:{node|short}"}\n'
   -1:000000000000
 
 join() should pick '{rev}' from revset items:
 
   $ hg log -R ../a -T '{join(revset("parents(%d)", rev), ", ")}\n' -r6
   4, 5
 
 on the other hand, parents are formatted as '{rev}:{node|formatnode}' by
 default. join() should agree with the default formatting:
 
   $ hg log -R ../a -T '{join(parents, ", ")}\n' -r6
   5:13207e5a10d9, 4:bbe44766e73d
 
   $ hg log -R ../a -T '{join(parents, ",\n")}\n' -r6 --debug
   5:13207e5a10d9fd28ec424934298e176197f2c67f,
   4:bbe44766e73d5f11ed2177f1838de10c53ef3e74
 
 Test files function
 
   $ hg log -T "{rev}\n{join(files('*'), '\n')}\n"
   2
   a
   aa
   b
   1
   a
   0
   a
 
   $ hg log -T "{rev}\n{join(files('aa'), '\n')}\n"
   2
   aa
   1
   
   0
   
 
 Test relpath function
 
   $ hg log -r0 -T '{files % "{file|relpath}\n"}'
   a
   $ cd ..
   $ hg log -R r -r0 -T '{files % "{file|relpath}\n"}'
   r/a
   $ cd r
 
 Test active bookmark templating
 
   $ hg book foo
   $ hg book bar
   $ hg log --template "{rev} {bookmarks % '{bookmark}{ifeq(bookmark, active, \"*\")} '}\n"
   2 bar* foo 
   1 
   0 
   $ hg log --template "{rev} {activebookmark}\n"
   2 bar
   1 
   0 
   $ hg bookmarks --inactive bar
   $ hg log --template "{rev} {activebookmark}\n"
   2 
   1 
   0 
   $ hg book -r1 baz
   $ hg log --template "{rev} {join(bookmarks, ' ')}\n"
   2 bar foo
   1 baz
   0 
   $ hg log --template "{rev} {ifcontains('foo', bookmarks, 't', 'f')}\n"
   2 t
   1 f
   0 f
 
 Test namespaces dict
 
   $ hg --config extensions.revnamesext=$TESTDIR/revnamesext.py log -T '{rev}\n{namespaces % " {namespace} color={colorname} builtin={builtin}\n  {join(names, ",")}\n"}\n'
   2
    bookmarks color=bookmark builtin=True
     bar,foo
    tags color=tag builtin=True
     tip
    branches color=branch builtin=True
     text.{rev}
    revnames color=revname builtin=False
     r2
   
   1
    bookmarks color=bookmark builtin=True
     baz
    tags color=tag builtin=True
     
    branches color=branch builtin=True
     text.{rev}
    revnames color=revname builtin=False
     r1
   
   0
    bookmarks color=bookmark builtin=True
     
    tags color=tag builtin=True
     
    branches color=branch builtin=True
     default
    revnames color=revname builtin=False
     r0
   
   $ hg log -r2 -T '{namespaces % "{namespace}: {names}\n"}'
   bookmarks: bar foo
   tags: tip
   branches: text.{rev}
   $ hg log -r2 -T '{namespaces % "{namespace}:\n{names % " {name}\n"}"}'
   bookmarks:
    bar
    foo
   tags:
    tip
   branches:
    text.{rev}
   $ hg log -r2 -T '{get(namespaces, "bookmarks") % "{name}\n"}'
   bar
   foo
   $ hg log -r2 -T '{namespaces.bookmarks % "{bookmark}\n"}'
   bar
   foo
 
 Test stringify on sub expressions
 
   $ cd ..
   $ hg log -R a -r 8 --template '{join(files, if("1", if("1", ", ")))}\n'
   fourth, second, third
   $ hg log -R a -r 8 --template '{strip(if("1", if("1", "-abc-")), if("1", if("1", "-")))}\n'
   abc
 
 Test splitlines
 
   $ hg log -Gv -R a --template "{splitlines(desc) % 'foo {line}\n'}"
   @  foo Modify, add, remove, rename
   |
   o  foo future
   |
   o  foo third
   |
   o  foo second
   
   o    foo merge
   |\
   | o  foo new head
   | |
   o |  foo new branch
   |/
   o  foo no user, no domain
   |
   o  foo no person
   |
   o  foo other 1
   |  foo other 2
   |  foo
   |  foo other 3
   o  foo line 1
      foo line 2
 
   $ hg log -R a -r0 -T '{desc|splitlines}\n'
   line 1 line 2
   $ hg log -R a -r0 -T '{join(desc|splitlines, "|")}\n'
   line 1|line 2
 
 Test startswith
   $ hg log -Gv -R a --template "{startswith(desc)}"
   hg: parse error: startswith expects two arguments
   [255]
 
   $ hg log -Gv -R a --template "{startswith('line', desc)}"
   @
   |
   o
   |
   o
   |
   o
   
   o
   |\
   | o
   | |
   o |
   |/
   o
   |
   o
   |
   o
   |
   o  line 1
      line 2
 
 Test bad template with better error message
 
   $ hg log -Gv -R a --template '{desc|user()}'
   hg: parse error: expected a symbol, got 'func'
   [255]
 
 Test word function (including index out of bounds graceful failure)
 
   $ hg log -Gv -R a --template "{word('1', desc)}"
   @  add,
   |
   o
   |
   o
   |
   o
   
   o
   |\
   | o  head
   | |
   o |  branch
   |/
   o  user,
   |
   o  person
   |
   o  1
   |
   o  1
   
 
 Test word third parameter used as splitter
 
   $ hg log -Gv -R a --template "{word('0', desc, 'o')}"
   @  M
   |
   o  future
   |
   o  third
   |
   o  sec
   
   o    merge
   |\
   | o  new head
   | |
   o |  new branch
   |/
   o  n
   |
   o  n
   |
   o
   |
   o  line 1
      line 2
 
 Test word error messages for not enough and too many arguments
 
   $ hg log -Gv -R a --template "{word('0')}"
   hg: parse error: word expects two or three arguments, got 1
   [255]
 
   $ hg log -Gv -R a --template "{word('0', desc, 'o', 'h', 'b', 'o', 'y')}"
   hg: parse error: word expects two or three arguments, got 7
   [255]
 
 Test word for integer literal
 
   $ hg log -R a --template "{word(2, desc)}\n" -r0
   line
 
 Test word for invalid numbers
 
   $ hg log -Gv -R a --template "{word('a', desc)}"
   hg: parse error: word expects an integer index
   [255]
 
 Test word for out of range
 
   $ hg log -R a --template "{word(10000, desc)}"
   $ hg log -R a --template "{word(-10000, desc)}"
 
 Test indent and not adding to empty lines
 
   $ hg log -T "-----\n{indent(desc, '>> ', ' > ')}\n" -r 0:1 -R a
   -----
    > line 1
   >> line 2
   -----
    > other 1
   >> other 2
   
   >> other 3
 
 Test with non-strings like dates
 
   $ hg log -T "{indent(date, '   ')}\n" -r 2:3 -R a
      1200000.00
      1300000.00
 
 Test broken string escapes:
 
   $ hg log -T "bogus\\" -R a
   hg: parse error: trailing \ in string
   [255]
   $ hg log -T "\\xy" -R a
   hg: parse error: invalid \x escape
   [255]
 
 json filter should escape HTML tags so that the output can be embedded in hgweb:
 
   $ hg log -T "{'<[e-mail]>'|json}\n" -R a -l1
   "\[e-mail]\u003e"
 
 Templater supports aliases of symbol and func() styles:
 
   $ hg clone -q a aliases
   $ cd aliases
   $ cat <<EOF >> .hg/hgrc
   > [templatealias]
   > r = rev
   > rn = "{r}:{node|short}"
   > status(c, files) = files % "{c} {file}\n"
   > utcdate(d) = localdate(d, "UTC")
   > EOF
 
   $ hg debugtemplate -vr0 '{rn} {utcdate(date)|isodate}\n'
   (template
     (symbol 'rn')
     (string ' ')
     (|
       (func
         (symbol 'utcdate')
         (symbol 'date'))
       (symbol 'isodate'))
     (string '\n'))
   * expanded:
   (template
     (template
       (symbol 'rev')
       (string ':')
       (|
         (symbol 'node')
         (symbol 'short')))
     (string ' ')
     (|
       (func
         (symbol 'localdate')
         (list
           (symbol 'date')
           (string 'UTC')))
       (symbol 'isodate'))
     (string '\n'))
   0:1e4e1b8f71e0 1970-01-12 13:46 +0000
 
   $ hg debugtemplate -vr0 '{status("A", file_adds)}'
   (template
     (func
       (symbol 'status')
       (list
         (string 'A')
         (symbol 'file_adds'))))
   * expanded:
   (template
     (%
       (symbol 'file_adds')
       (template
         (string 'A')
         (string ' ')
         (symbol 'file')
         (string '\n'))))
   A a
 
 A unary function alias can be called as a filter:
 
   $ hg debugtemplate -vr0 '{date|utcdate|isodate}\n'
   (template
     (|
       (|
         (symbol 'date')
         (symbol 'utcdate'))
       (symbol 'isodate'))
     (string '\n'))
   * expanded:
   (template
     (|
       (func
         (symbol 'localdate')
         (list
           (symbol 'date')
           (string 'UTC')))
       (symbol 'isodate'))
     (string '\n'))
   1970-01-12 13:46 +0000
 
 Aliases should be applied only to command arguments and templates in hgrc.
 Otherwise, our stock styles and web templates could be corrupted:
 
   $ hg log -r0 -T '{rn} {utcdate(date)|isodate}\n'
   0:1e4e1b8f71e0 1970-01-12 13:46 +0000
 
   $ hg log -r0 --config ui.logtemplate='"{rn} {utcdate(date)|isodate}\n"'
   0:1e4e1b8f71e0 1970-01-12 13:46 +0000
 
   $ cat <<EOF > tmpl
   > changeset = 'nothing expanded:{rn}\n'
   > EOF
   $ hg log -r0 --style ./tmpl
   nothing expanded:
 
 Aliases in formatter:
 
   $ hg branches -T '{pad(branch, 7)} {rn}\n'
   default 6:d41e714fe50d
   foo     4:bbe44766e73d
 
 Aliases should honor HGPLAIN:
 
   $ HGPLAIN= hg log -r0 -T 'nothing expanded:{rn}\n'
   nothing expanded:
   $ HGPLAINEXCEPT=templatealias hg log -r0 -T '{rn}\n'
   0:1e4e1b8f71e0
 
 Unparsable alias:
 
   $ hg debugtemplate --config templatealias.bad='x(' -v '{bad}'
   (template
     (symbol 'bad'))
   abort: bad definition of template alias "bad": at 2: not a prefix: end
   [255]
   $ hg log --config templatealias.bad='x(' -T '{bad}'
   abort: bad definition of template alias "bad": at 2: not a prefix: end
   [255]
 
   $ cd ..
 
 Set up repository for non-ascii encoding tests:
 
   $ hg init nonascii
   $ cd nonascii
   $ $PYTHON <<EOF
   > open('latin1', 'w').write('\xe9')
   > open('utf-8', 'w').write('\xc3\xa9')
   > EOF
   $ HGENCODING=utf-8 hg branch -q `cat utf-8`
   $ HGENCODING=utf-8 hg ci -qAm "non-ascii branch: `cat utf-8`" utf-8
 
 json filter should try round-trip conversion to utf-8:
 
   $ HGENCODING=ascii hg log -T "{branch|json}\n" -r0
   "\u00e9"
   $ HGENCODING=ascii hg log -T "{desc|json}\n" -r0
   "non-ascii branch: \u00e9"
 
 json filter takes input as utf-8b:
 
   $ HGENCODING=ascii hg log -T "{'`cat utf-8`'|json}\n" -l1
   "\u00e9"
   $ HGENCODING=ascii hg log -T "{'`cat latin1`'|json}\n" -l1
   "\udce9"
 
 utf8 filter:
 
   $ HGENCODING=ascii hg log -T "round-trip: {branch|utf8|hex}\n" -r0
   round-trip: c3a9
   $ HGENCODING=latin1 hg log -T "decoded: {'`cat latin1`'|utf8|hex}\n" -l1
   decoded: c3a9
   $ HGENCODING=ascii hg log -T "replaced: {'`cat latin1`'|utf8|hex}\n" -l1
   abort: decoding near * (glob)
   [255]
   $ hg log -T "invalid type: {rev|utf8}\n" -r0
   abort: template filter 'utf8' is not compatible with keyword 'rev'
   [255]
 
 pad width:
 
   $ HGENCODING=utf-8 hg debugtemplate "{pad('`cat utf-8`', 2, '-')}\n"
   \xc3\xa9- (esc)
 
   $ cd ..
 
 Test that template function in extension is registered as expected
 
   $ cd a
 
   $ cat <<EOF > $TESTTMP/customfunc.py
   > from mercurial import registrar
   > 
   > templatefunc = registrar.templatefunc()
   > 
   > @templatefunc('custom()')
   > def custom(context, mapping, args):
   >     return 'custom'
   > EOF
   $ cat <<EOF > .hg/hgrc
   > [extensions]
   > customfunc = $TESTTMP/customfunc.py
   > EOF
 
   $ hg log -r . -T "{custom()}\n" --config customfunc.enabled=true
   custom
 
   $ cd ..
 
 Test 'graphwidth' in 'hg log' on various topologies. The key here is that the
 printed graphwidths 3, 5, 7, etc. should all line up in their respective
 columns. We don't care about other aspects of the graph rendering here.
 
   $ hg init graphwidth
   $ cd graphwidth
 
   $ wrappabletext="a a a a a a a a a a a a"
 
   $ printf "first\n" > file
   $ hg add file
   $ hg commit -m "$wrappabletext"
 
   $ printf "first\nsecond\n" > file
   $ hg commit -m "$wrappabletext"
 
   $ hg checkout 0
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ printf "third\nfirst\n" > file
   $ hg commit -m "$wrappabletext"
   created new head
 
   $ hg merge
   merging file
   0 files updated, 1 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
 
   $ hg log --graph -T "{graphwidth}"
   @  3
   |
   | @  5
   |/
   o  3
   
   $ hg commit -m "$wrappabletext"
 
   $ hg log --graph -T "{graphwidth}"
   @    5
   |\
   | o  5
   | |
   o |  5
   |/
   o  3
   
 
   $ hg checkout 0
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ printf "third\nfirst\nsecond\n" > file
   $ hg commit -m "$wrappabletext"
   created new head
 
   $ hg log --graph -T "{graphwidth}"
   @  3
   |
   | o    7
   | |\
   +---o  7
   | |
   | o  5
   |/
   o  3
   
 
   $ hg log --graph -T "{graphwidth}" -r 3
   o    5
   |\
   ~ ~
 
   $ hg log --graph -T "{graphwidth}" -r 1
   o  3
   |
   ~
 
   $ hg merge
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   $ hg commit -m "$wrappabletext"
 
   $ printf "seventh\n" >> file
   $ hg commit -m "$wrappabletext"
 
   $ hg log --graph -T "{graphwidth}"
   @  3
   |
   o    5
   |\
   | o  5
   | |
   o |    7
   |\ \
   | o |  7
   | |/
   o /  5
   |/
   o  3
   
 
 The point of graphwidth is to allow wrapping that accounts for the space taken
 by the graph.
 
   $ COLUMNS=10 hg log --graph -T "{fill(desc, termwidth - graphwidth)}"
   @  a a a a
   |  a a a a
   |  a a a a
   o    a a a
   |\   a a a
   | |  a a a
   | |  a a a
   | o  a a a
   | |  a a a
   | |  a a a
   | |  a a a
   o |    a a
   |\ \   a a
   | | |  a a
   | | |  a a
   | | |  a a
   | | |  a a
   | o |  a a
   | |/   a a
   | |    a a
   | |    a a
   | |    a a
   | |    a a
   o |  a a a
   |/   a a a
   |    a a a
   |    a a a
   o  a a a a
      a a a a
      a a a a
 
 Something tricky happens when there are elided nodes; the next drawn row of
 edges can be more than one column wider, but the graph width only increases by
 one column. The remaining columns are added in between the nodes.
 
   $ hg log --graph -T "{graphwidth}" -r "0|2|4|5"
   o    5
   |\
   | \
   | :\
   o : :  7
   :/ /
   : o  5
   :/
   o  3
   
 
   $ cd ..