templater: fix truth testing of integer 0 taken from a list/dict

Broken at f9c426385853. bool(python_value) shouldn't be used here since
an integer 0 has to be truthy for backward compatibility.

mercurial/templateutil.py

@@ -1,886 +1,887 b''
 # templateutil.py - utility for template evaluation
 #
 # 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
 
 import abc
 import types
 
 from .i18n import _
 from . import (
     error,
     pycompat,
     util,
 )
 from .utils import (
     dateutil,
     stringutil,
 )
 
 class ResourceUnavailable(error.Abort):
     pass
 
 class TemplateNotFound(error.Abort):
     pass
 
 class wrapped(object):
     """Object requiring extra conversion prior to displaying or processing
     as value
 
     Use unwrapvalue() or unwrapastype() to obtain the inner object.
     """
 
     __metaclass__ = abc.ABCMeta
 
     @abc.abstractmethod
     def contains(self, context, mapping, item):
         """Test if the specified item is in self
 
         The item argument may be a wrapped object.
         """
 
     @abc.abstractmethod
     def getmember(self, context, mapping, key):
         """Return a member item for the specified key
 
         The key argument may be a wrapped object.
         A returned object may be either a wrapped object or a pure value
         depending on the self type.
         """
 
     @abc.abstractmethod
     def getmin(self, context, mapping):
         """Return the smallest item, which may be either a wrapped or a pure
         value depending on the self type"""
 
     @abc.abstractmethod
     def getmax(self, context, mapping):
         """Return the largest item, which may be either a wrapped or a pure
         value depending on the self type"""
 
     @abc.abstractmethod
     def itermaps(self, context):
         """Yield each template mapping"""
 
     @abc.abstractmethod
     def join(self, context, mapping, sep):
         """Join items with the separator; Returns a bytes or (possibly nested)
         generator of bytes
 
         A pre-configured template may be rendered per item if this container
         holds unprintable items.
         """
 
     @abc.abstractmethod
     def show(self, context, mapping):
         """Return a bytes or (possibly nested) generator of bytes representing
         the underlying object
 
         A pre-configured template may be rendered if the underlying object is
         not printable.
         """
 
     @abc.abstractmethod
     def tobool(self, context, mapping):
         """Return a boolean representation of the inner value"""
 
     @abc.abstractmethod
     def tovalue(self, context, mapping):
         """Move the inner value object out or create a value representation
 
         A returned value must be serializable by templaterfilters.json().
         """
 
 class mappable(object):
     """Object which can be converted to a single template mapping"""
 
     def itermaps(self, context):
         yield self.tomap(context)
 
     @abc.abstractmethod
     def tomap(self, context):
         """Create a single template mapping representing this"""
 
 class wrappedbytes(wrapped):
     """Wrapper for byte string"""
 
     def __init__(self, value):
         self._value = value
 
     def contains(self, context, mapping, item):
         item = stringify(context, mapping, item)
         return item in self._value
 
     def getmember(self, context, mapping, key):
         raise error.ParseError(_('%r is not a dictionary')
                                % pycompat.bytestr(self._value))
 
     def getmin(self, context, mapping):
         return self._getby(context, mapping, min)
 
     def getmax(self, context, mapping):
         return self._getby(context, mapping, max)
 
     def _getby(self, context, mapping, func):
         if not self._value:
             raise error.ParseError(_('empty string'))
         return func(pycompat.iterbytestr(self._value))
 
     def itermaps(self, context):
         raise error.ParseError(_('%r is not iterable of mappings')
                                % pycompat.bytestr(self._value))
 
     def join(self, context, mapping, sep):
         return joinitems(pycompat.iterbytestr(self._value), sep)
 
     def show(self, context, mapping):
         return self._value
 
     def tobool(self, context, mapping):
         return bool(self._value)
 
     def tovalue(self, context, mapping):
         return self._value
 
 class wrappedvalue(wrapped):
     """Generic wrapper for pure non-list/dict/bytes value"""
 
     def __init__(self, value):
         self._value = value
 
     def contains(self, context, mapping, item):
         raise error.ParseError(_("%r is not iterable") % self._value)
 
     def getmember(self, context, mapping, key):
         raise error.ParseError(_('%r is not a dictionary') % self._value)
 
     def getmin(self, context, mapping):
         raise error.ParseError(_("%r is not iterable") % self._value)
 
     def getmax(self, context, mapping):
         raise error.ParseError(_("%r is not iterable") % self._value)
 
     def itermaps(self, context):
         raise error.ParseError(_('%r is not iterable of mappings')
                                % self._value)
 
     def join(self, context, mapping, sep):
         raise error.ParseError(_('%r is not iterable') % self._value)
 
     def show(self, context, mapping):
         if self._value is None:
             return b''
         return pycompat.bytestr(self._value)
 
     def tobool(self, context, mapping):
         if self._value is None:
             return False
         if isinstance(self._value, bool):
             return self._value
         # otherwise evaluate as string, which means 0 is True
         return bool(pycompat.bytestr(self._value))
 
     def tovalue(self, context, mapping):
         return self._value
 
 class date(mappable, wrapped):
     """Wrapper for date tuple"""
 
     def __init__(self, value, showfmt='%d %d'):
         # value may be (float, int), but public interface shouldn't support
         # floating-point timestamp
         self._unixtime, self._tzoffset = map(int, value)
         self._showfmt = showfmt
 
     def contains(self, context, mapping, item):
         raise error.ParseError(_('date is not iterable'))
 
     def getmember(self, context, mapping, key):
         raise error.ParseError(_('date is not a dictionary'))
 
     def getmin(self, context, mapping):
         raise error.ParseError(_('date is not iterable'))
 
     def getmax(self, context, mapping):
         raise error.ParseError(_('date is not iterable'))
 
     def join(self, context, mapping, sep):
         raise error.ParseError(_("date is not iterable"))
 
     def show(self, context, mapping):
         return self._showfmt % (self._unixtime, self._tzoffset)
 
     def tomap(self, context):
         return {'unixtime': self._unixtime, 'tzoffset': self._tzoffset}
 
     def tobool(self, context, mapping):
         return True
 
     def tovalue(self, context, mapping):
         return (self._unixtime, self._tzoffset)
 
 class hybrid(wrapped):
     """Wrapper for list or dict to support legacy template
 
     This class allows us to handle both:
     - "{files}" (legacy command-line-specific list hack) and
     - "{files % '{file}\n'}" (hgweb-style with inlining and function support)
     and to access raw values:
     - "{ifcontains(file, files, ...)}", "{ifcontains(key, extras, ...)}"
     - "{get(extras, key)}"
     - "{files|json}"
     """
 
     def __init__(self, gen, values, makemap, joinfmt, keytype=None):
         self._gen = gen  # generator or function returning generator
         self._values = values
         self._makemap = makemap
         self._joinfmt = joinfmt
         self._keytype = keytype  # hint for 'x in y' where type(x) is unresolved
 
     def contains(self, context, mapping, item):
         item = unwrapastype(context, mapping, item, self._keytype)
         return item in self._values
 
     def getmember(self, context, mapping, key):
         # TODO: maybe split hybrid list/dict types?
         if not util.safehasattr(self._values, 'get'):
             raise error.ParseError(_('not a dictionary'))
         key = unwrapastype(context, mapping, key, self._keytype)
         return self._wrapvalue(key, self._values.get(key))
 
     def getmin(self, context, mapping):
         return self._getby(context, mapping, min)
 
     def getmax(self, context, mapping):
         return self._getby(context, mapping, max)
 
     def _getby(self, context, mapping, func):
         if not self._values:
             raise error.ParseError(_('empty sequence'))
         val = func(self._values)
         return self._wrapvalue(val, val)
 
     def _wrapvalue(self, key, val):
         if val is None:
             return
         if util.safehasattr(val, '_makemap'):
             # a nested hybrid list/dict, which has its own way of map operation
             return val
         return hybriditem(None, key, val, self._makemap)
 
     def itermaps(self, context):
         makemap = self._makemap
         for x in self._values:
             yield makemap(x)
 
     def join(self, context, mapping, sep):
         # TODO: switch gen to (context, mapping) API?
         return joinitems((self._joinfmt(x) for x in self._values), sep)
 
     def show(self, context, mapping):
         # TODO: switch gen to (context, mapping) API?
         gen = self._gen
         if gen is None:
             return self.join(context, mapping, ' ')
         if callable(gen):
             return gen()
         return gen
 
     def tobool(self, context, mapping):
         return bool(self._values)
 
     def tovalue(self, context, mapping):
         # TODO: make it non-recursive for trivial lists/dicts
         xs = self._values
         if util.safehasattr(xs, 'get'):
             return {k: unwrapvalue(context, mapping, v)
                     for k, v in xs.iteritems()}
         return [unwrapvalue(context, mapping, x) for x in xs]
 
 class hybriditem(mappable, wrapped):
     """Wrapper for non-list/dict object to support map operation
 
     This class allows us to handle both:
     - "{manifest}"
     - "{manifest % '{rev}:{node}'}"
     - "{manifest.rev}"
     """
 
     def __init__(self, gen, key, value, makemap):
         self._gen = gen  # generator or function returning generator
         self._key = key
         self._value = value  # may be generator of strings
         self._makemap = makemap
 
     def tomap(self, context):
         return self._makemap(self._key)
 
     def contains(self, context, mapping, item):
         w = makewrapped(context, mapping, self._value)
         return w.contains(context, mapping, item)
 
     def getmember(self, context, mapping, key):
         w = makewrapped(context, mapping, self._value)
         return w.getmember(context, mapping, key)
 
     def getmin(self, context, mapping):
         w = makewrapped(context, mapping, self._value)
         return w.getmin(context, mapping)
 
     def getmax(self, context, mapping):
         w = makewrapped(context, mapping, self._value)
         return w.getmax(context, mapping)
 
     def join(self, context, mapping, sep):
         w = makewrapped(context, mapping, self._value)
         return w.join(context, mapping, sep)
 
     def show(self, context, mapping):
         # TODO: switch gen to (context, mapping) API?
         gen = self._gen
         if gen is None:
             return pycompat.bytestr(self._value)
         if callable(gen):
             return gen()
         return gen
 
     def tobool(self, context, mapping):
-        return bool(self.tovalue(context, mapping))
+        w = makewrapped(context, mapping, self._value)
+        return w.tobool(context, mapping)
 
     def tovalue(self, context, mapping):
         return _unthunk(context, mapping, self._value)
 
 class _mappingsequence(wrapped):
     """Wrapper for sequence of template mappings
 
     This represents an inner template structure (i.e. a list of dicts),
     which can also be rendered by the specified named/literal template.
 
     Template mappings may be nested.
     """
 
     def __init__(self, name=None, tmpl=None, sep=''):
         if name is not None and tmpl is not None:
             raise error.ProgrammingError('name and tmpl are mutually exclusive')
         self._name = name
         self._tmpl = tmpl
         self._defaultsep = sep
 
     def contains(self, context, mapping, item):
         raise error.ParseError(_('not comparable'))
 
     def getmember(self, context, mapping, key):
         raise error.ParseError(_('not a dictionary'))
 
     def getmin(self, context, mapping):
         raise error.ParseError(_('not comparable'))
 
     def getmax(self, context, mapping):
         raise error.ParseError(_('not comparable'))
 
     def join(self, context, mapping, sep):
         mapsiter = _iteroverlaymaps(context, mapping, self.itermaps(context))
         if self._name:
             itemiter = (context.process(self._name, m) for m in mapsiter)
         elif self._tmpl:
             itemiter = (context.expand(self._tmpl, m) for m in mapsiter)
         else:
             raise error.ParseError(_('not displayable without template'))
         return joinitems(itemiter, sep)
 
     def show(self, context, mapping):
         return self.join(context, mapping, self._defaultsep)
 
     def tovalue(self, context, mapping):
         knownres = context.knownresourcekeys()
         items = []
         for nm in self.itermaps(context):
             # drop internal resources (recursively) which shouldn't be displayed
             lm = context.overlaymap(mapping, nm)
             items.append({k: unwrapvalue(context, lm, v)
                           for k, v in nm.iteritems() if k not in knownres})
         return items
 
 class mappinggenerator(_mappingsequence):
     """Wrapper for generator of template mappings
 
     The function ``make(context, *args)`` should return a generator of
     mapping dicts.
     """
 
     def __init__(self, make, args=(), name=None, tmpl=None, sep=''):
         super(mappinggenerator, self).__init__(name, tmpl, sep)
         self._make = make
         self._args = args
 
     def itermaps(self, context):
         return self._make(context, *self._args)
 
     def tobool(self, context, mapping):
         return _nonempty(self.itermaps(context))
 
 class mappinglist(_mappingsequence):
     """Wrapper for list of template mappings"""
 
     def __init__(self, mappings, name=None, tmpl=None, sep=''):
         super(mappinglist, self).__init__(name, tmpl, sep)
         self._mappings = mappings
 
     def itermaps(self, context):
         return iter(self._mappings)
 
     def tobool(self, context, mapping):
         return bool(self._mappings)
 
 class mappedgenerator(wrapped):
     """Wrapper for generator of strings which acts as a list
 
     The function ``make(context, *args)`` should return a generator of
     byte strings, or a generator of (possibly nested) generators of byte
     strings (i.e. a generator for a list of byte strings.)
     """
 
     def __init__(self, make, args=()):
         self._make = make
         self._args = args
 
     def contains(self, context, mapping, item):
         item = stringify(context, mapping, item)
         return item in self.tovalue(context, mapping)
 
     def _gen(self, context):
         return self._make(context, *self._args)
 
     def getmember(self, context, mapping, key):
         raise error.ParseError(_('not a dictionary'))
 
     def getmin(self, context, mapping):
         return self._getby(context, mapping, min)
 
     def getmax(self, context, mapping):
         return self._getby(context, mapping, max)
 
     def _getby(self, context, mapping, func):
         xs = self.tovalue(context, mapping)
         if not xs:
             raise error.ParseError(_('empty sequence'))
         return func(xs)
 
     def itermaps(self, context):
         raise error.ParseError(_('list of strings is not mappable'))
 
     def join(self, context, mapping, sep):
         return joinitems(self._gen(context), sep)
 
     def show(self, context, mapping):
         return self.join(context, mapping, '')
 
     def tobool(self, context, mapping):
         return _nonempty(self._gen(context))
 
     def tovalue(self, context, mapping):
         return [stringify(context, mapping, x) for x in self._gen(context)]
 
 def hybriddict(data, key='key', value='value', fmt=None, gen=None):
     """Wrap data to support both dict-like and string-like operations"""
     prefmt = pycompat.identity
     if fmt is None:
         fmt = '%s=%s'
         prefmt = pycompat.bytestr
     return hybrid(gen, data, lambda k: {key: k, value: data[k]},
                   lambda k: fmt % (prefmt(k), prefmt(data[k])))
 
 def hybridlist(data, name, fmt=None, gen=None):
     """Wrap data to support both list-like and string-like operations"""
     prefmt = pycompat.identity
     if fmt is None:
         fmt = '%s'
         prefmt = pycompat.bytestr
     return hybrid(gen, data, lambda x: {name: x}, lambda x: fmt % prefmt(x))
 
 def compatdict(context, mapping, name, data, key='key', value='value',
                fmt=None, plural=None, separator=' '):
     """Wrap data like hybriddict(), but also supports old-style list template
 
     This exists for backward compatibility with the old-style template. Use
     hybriddict() for new template keywords.
     """
     c = [{key: k, value: v} for k, v in data.iteritems()]
     f = _showcompatlist(context, mapping, name, c, plural, separator)
     return hybriddict(data, key=key, value=value, fmt=fmt, gen=f)
 
 def compatlist(context, mapping, name, data, element=None, fmt=None,
                plural=None, separator=' '):
     """Wrap data like hybridlist(), but also supports old-style list template
 
     This exists for backward compatibility with the old-style template. Use
     hybridlist() for new template keywords.
     """
     f = _showcompatlist(context, mapping, name, data, plural, separator)
     return hybridlist(data, name=element or name, fmt=fmt, gen=f)
 
 def _showcompatlist(context, mapping, name, values, plural=None, separator=' '):
     """Return a generator that renders old-style list template
 
     name is name of key in template map.
     values is list of strings or dicts.
     plural is plural of name, if not simply name + 's'.
     separator is used to join values as a string
 
     expansion works like this, given name 'foo'.
 
     if values is empty, expand 'no_foos'.
 
     if 'foo' not in template map, return values as a string,
     joined by 'separator'.
 
     expand 'start_foos'.
 
     for each value, expand 'foo'. if 'last_foo' in template
     map, expand it instead of 'foo' for last key.
 
     expand 'end_foos'.
     """
     if not plural:
         plural = name + 's'
     if not values:
         noname = 'no_' + plural
         if context.preload(noname):
             yield context.process(noname, mapping)
         return
     if not context.preload(name):
         if isinstance(values[0], bytes):
             yield separator.join(values)
         else:
             for v in values:
                 r = dict(v)
                 r.update(mapping)
                 yield r
         return
     startname = 'start_' + plural
     if context.preload(startname):
         yield context.process(startname, mapping)
     def one(v, tag=name):
         vmapping = {}
         try:
             vmapping.update(v)
         # Python 2 raises ValueError if the type of v is wrong. Python
         # 3 raises TypeError.
         except (AttributeError, TypeError, ValueError):
             try:
                 # Python 2 raises ValueError trying to destructure an e.g.
                 # bytes. Python 3 raises TypeError.
                 for a, b in v:
                     vmapping[a] = b
             except (TypeError, ValueError):
                 vmapping[name] = v
         vmapping = context.overlaymap(mapping, vmapping)
         return context.process(tag, vmapping)
     lastname = 'last_' + name
     if context.preload(lastname):
         last = values.pop()
     else:
         last = None
     for v in values:
         yield one(v)
     if last is not None:
         yield one(last, tag=lastname)
     endname = 'end_' + plural
     if context.preload(endname):
         yield context.process(endname, mapping)
 
 def flatten(context, mapping, thing):
     """Yield a single stream from a possibly nested set of iterators"""
     if isinstance(thing, wrapped):
         thing = thing.show(context, mapping)
     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, got %r' % thing)
     elif thing is None:
         pass
     elif not util.safehasattr(thing, '__iter__'):
         yield pycompat.bytestr(thing)
     else:
         for i in thing:
             if isinstance(i, wrapped):
                 i = i.show(context, mapping)
             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(context, mapping, i):
                     yield j
 
 def stringify(context, mapping, thing):
     """Turn values into bytes by converting into text and concatenating them"""
     if isinstance(thing, bytes):
         return thing  # retain localstr to be round-tripped
     return b''.join(flatten(context, mapping, thing))
 
 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 _nonempty(xiter):
     try:
         next(xiter)
         return True
     except StopIteration:
         return False
 
 def _unthunk(context, mapping, thing):
     """Evaluate a lazy byte string into value"""
     if not isinstance(thing, types.GeneratorType):
         return thing
     return stringify(context, mapping, thing)
 
 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 evalwrapped(context, mapping, arg):
     """Evaluate given argument to wrapped object"""
     thing = evalrawexp(context, mapping, arg)
     return makewrapped(context, mapping, thing)
 
 def makewrapped(context, mapping, thing):
     """Lift object to a wrapped type"""
     if isinstance(thing, wrapped):
         return thing
     thing = _unthunk(context, mapping, thing)
     if isinstance(thing, bytes):
         return wrappedbytes(thing)
     return wrappedvalue(thing)
 
 def evalfuncarg(context, mapping, arg):
     """Evaluate given argument as value type"""
     return unwrapvalue(context, mapping, evalrawexp(context, mapping, arg))
 
 def unwrapvalue(context, mapping, thing):
     """Move the inner value object out of the wrapper"""
     if isinstance(thing, wrapped):
         return thing.tovalue(context, mapping)
     # evalrawexp() may return string, generator of strings or arbitrary object
     # such as date tuple, but filter does not want generator.
     return _unthunk(context, mapping, 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 = stringutil.parsebool(data)
     else:
         thing = func(context, mapping, data)
     return makewrapped(context, mapping, thing).tobool(context, mapping)
 
 def evaldate(context, mapping, arg, err=None):
     """Evaluate given argument as a date tuple or a date string; returns
     a (unixtime, offset) tuple"""
     thing = evalrawexp(context, mapping, arg)
     return unwrapdate(context, mapping, thing, err)
 
 def unwrapdate(context, mapping, thing, err=None):
     if isinstance(thing, date):
         return thing.tovalue(context, mapping)
     # TODO: update hgweb to not return bare tuple; then just stringify 'thing'
     thing = unwrapvalue(context, mapping, thing)
     try:
         return dateutil.parsedate(thing)
     except AttributeError:
         raise error.ParseError(err or _('not a date tuple nor a string'))
     except error.ParseError:
         if not err:
             raise
         raise error.ParseError(err)
 
 def evalinteger(context, mapping, arg, err=None):
     thing = evalrawexp(context, mapping, arg)
     return unwrapinteger(context, mapping, thing, err)
 
 def unwrapinteger(context, mapping, thing, err=None):
     thing = unwrapvalue(context, mapping, thing)
     try:
         return int(thing)
     except (TypeError, ValueError):
         raise error.ParseError(err or _('not an integer'))
 
 def evalstring(context, mapping, arg):
     return stringify(context, mapping, 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(context, mapping, thing)
 
 _unwrapfuncbytype = {
     None: unwrapvalue,
     bytes: stringify,
     date: unwrapdate,
     int: unwrapinteger,
 }
 
 def unwrapastype(context, mapping, thing, typ):
     """Move the inner value object out of the wrapper and coerce its type"""
     try:
         f = _unwrapfuncbytype[typ]
     except KeyError:
         raise error.ProgrammingError('invalid type specified: %r' % typ)
     return f(context, mapping, thing)
 
 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 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) and getattr(v, '_requires', None) is None:
         # old templatekw: expand all keywords and resources
         # (TODO: deprecate this after porting web template keywords to new API)
         props = {k: context._resources.lookup(context, mapping, k)
                  for k in context._resources.knownkeys()}
         # pass context to _showcompatlist() through templatekw._showlist()
         props['templ'] = context
         props.update(mapping)
         return v(**pycompat.strkwargs(props))
     if callable(v):
         # new templatekw
         try:
             return v(context, mapping)
         except ResourceUnavailable:
             # unsupported keyword is mapped to empty just like unknown keyword
             return None
     return v
 
 def runtemplate(context, mapping, template):
     for arg in template:
         yield evalrawexp(context, mapping, arg)
 
 def runfilter(context, mapping, data):
     arg, filt = data
     thing = evalrawexp(context, mapping, arg)
     intype = getattr(filt, '_intype', None)
     try:
         thing = unwrapastype(context, mapping, thing, intype)
         return filt(thing)
     except error.ParseError as e:
         raise error.ParseError(bytes(e), hint=_formatfiltererror(arg, filt))
 
 def _formatfiltererror(arg, filt):
     fn = pycompat.sysbytes(filt.__name__)
     sym = findsymbolicname(arg)
     if not sym:
         return _("incompatible use of template filter '%s'") % fn
     return (_("template filter '%s' is not compatible with keyword '%s'")
             % (fn, sym))
 
 def _iteroverlaymaps(context, origmapping, newmappings):
     """Generate combined mappings from the original mapping and an iterable
     of partial mappings to override the original"""
     for i, nm in enumerate(newmappings):
         lm = context.overlaymap(origmapping, nm)
         lm['index'] = i
         yield lm
 
 def _applymap(context, mapping, d, darg, targ):
     try:
         diter = d.itermaps(context)
     except error.ParseError as err:
         sym = findsymbolicname(darg)
         if not sym:
             raise
         hint = _("keyword '%s' does not support map operation") % sym
         raise error.ParseError(bytes(err), hint=hint)
     for lm in _iteroverlaymaps(context, mapping, diter):
         yield evalrawexp(context, lm, targ)
 
 def runmap(context, mapping, data):
     darg, targ = data
     d = evalwrapped(context, mapping, darg)
     return mappedgenerator(_applymap, args=(mapping, d, darg, targ))
 
 def runmember(context, mapping, data):
     darg, memb = data
     d = evalwrapped(context, mapping, darg)
     if isinstance(d, mappable):
         lm = context.overlaymap(mapping, d.tomap(context))
         return runsymbol(context, lm, memb)
     try:
         return d.getmember(context, mapping, memb)
     except error.ParseError as err:
         sym = findsymbolicname(darg)
         if not sym:
             raise
         hint = _("keyword '%s' does not support member operation") % sym
         raise error.ParseError(bytes(err), hint=hint)
 
 def runnegate(context, mapping, data):
     data = evalinteger(context, mapping, data,
                        _('negation needs an integer argument'))
     return -data
 
 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 joinitems(itemiter, sep):
     """Join items with the separator; Returns generator of bytes"""
     first = True
     for x in itemiter:
         if first:
             first = False
         elif sep:
             yield sep
         yield x

tests/test-template-functions.t

@@ -1,1376 +1,1378 b''
 Test template filters and functions
 ===================================
 
   $ 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'
 
 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 phase -r 5 --public
   $ hg phase -r 7 --secret --force
 
 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', 'wb')
   >>> n = datetime.datetime.now() + datetime.timedelta(366 * 7)
   >>> fp.write(b'%d-%d-%d 00:00' % (n.year, n.month, n.day)) and None
   >>> 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
 
 Filename filters:
 
   $ hg debugtemplate '{"foo/bar"|basename}|{"foo/"|basename}|{"foo"|basename}|\n'
   bar||foo|
   $ hg debugtemplate '{"foo/bar"|dirname}|{"foo/"|dirname}|{"foo"|dirname}|\n'
   foo|foo||
   $ hg debugtemplate '{"foo/bar"|stripdir}|{"foo/"|stripdir}|{"foo"|stripdir}|\n'
   foo|foo|foo|
 
 commondir() filter:
 
   $ hg debugtemplate '{""|splitlines|commondir}\n'
   
   $ hg debugtemplate '{"foo/bar\nfoo/baz\nfoo/foobar\n"|splitlines|commondir}\n'
   foo
   $ hg debugtemplate '{"foo/bar\nfoo/bar\n"|splitlines|commondir}\n'
   foo
   $ hg debugtemplate '{"/foo/bar\n/foo/bar\n"|splitlines|commondir}\n'
   foo
   $ hg debugtemplate '{"/foo\n/foo\n"|splitlines|commondir}\n'
   
   $ hg debugtemplate '{"foo/bar\nbar/baz"|splitlines|commondir}\n'
   
   $ hg debugtemplate '{"foo/bar\nbar/baz\nbar/foo\n"|splitlines|commondir}\n'
   
   $ hg debugtemplate '{"foo/../bar\nfoo/bar"|splitlines|commondir}\n'
   foo
   $ hg debugtemplate '{"foo\n/foo"|splitlines|commondir}\n'
   
 
   $ hg log -r null -T '{rev|commondir}'
   hg: parse error: argument is not a list of text
   (template filter 'commondir' is not compatible with keyword 'rev')
   [255]
 
 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
   
 
   $ hg log -l1 -T '{termwidth|count}\n'
   hg: parse error: not countable
   (template filter 'count' is not compatible with keyword 'termwidth')
   [255]
 
 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'
   1000000.00
 
 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"
 
 Pass generator object created by template function to filter
 
   $ hg log -l 1 --template '{if(author, author)|user}\n'
   test
 
 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
 
   $ cd ..
 
 latesttag() function:
 
   $ 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'
 
   $ hg tag -r 1 -m t1 -d '6 0' t1
   $ hg tag -r 2 -m t2 -d '7 0' t2
   $ hg tag -r 3 -m t3 -d '8 0' t3
   $ hg tag -r 4 -m t4 -d '4 0' t4 # older than t2, but should not matter
   $ 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('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 ..
 
 Test manifest/get() can be join()-ed as string, though it's silly:
 
   $ hg log -R latesttag -r tip -T '{join(manifest, ".")}\n'
   1.1.:.2.b.c.6.e.9.0.0.6.c.e.2
   $ hg log -R latesttag -r tip -T '{join(get(extras, "branch"), ".")}\n'
   d.e.f.a.u.l.t
 
 Test join() over string
 
   $ hg log -R latesttag -r tip -T '{join(rev|stringify, ".")}\n'
   1.1
 
 Test join() over uniterable
 
   $ hg log -R latesttag -r tip -T '{join(rev, "")}\n'
   hg: parse error: 11 is not iterable
   [255]
 
 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 min/max over map operation:
 
   $ hg log -R latesttag -r3 -T '{min(tags % "{tag}")}\n'
   at3
   $ hg log -R latesttag -r3 -T '{max(tags % "{tag}")}\n'
   t3
 
 Test min/max of strings:
 
   $ hg log -R latesttag -l1 -T '{min(desc)}\n'
   3
   $ hg log -R latesttag -l1 -T '{max(desc)}\n'
   t
 
 Test min/max of non-iterable:
 
   $ hg debugtemplate '{min(1)}'
   hg: parse error: 1 is not iterable
   (min first argument should be an iterable)
   [255]
   $ hg debugtemplate '{max(2)}'
   hg: parse error: 2 is not iterable
   (max first argument should be an iterable)
   [255]
 
   $ hg log -R latesttag -l1 -T '{min(date)}'
   hg: parse error: date is not iterable
   (min first argument should be an iterable)
   [255]
   $ hg log -R latesttag -l1 -T '{max(date)}'
   hg: parse error: date is not iterable
   (max first argument should be an iterable)
   [255]
 
 Test min/max of empty sequence:
 
   $ hg debugtemplate '{min("")}'
   hg: parse error: empty string
   (min first argument should be an iterable)
   [255]
   $ hg debugtemplate '{max("")}'
   hg: parse error: empty string
   (max first argument should be an iterable)
   [255]
   $ hg debugtemplate '{min(dict())}'
   hg: parse error: empty sequence
   (min first argument should be an iterable)
   [255]
   $ hg debugtemplate '{max(dict())}'
   hg: parse error: empty sequence
   (max first argument should be an iterable)
   [255]
   $ hg debugtemplate '{min(dict() % "")}'
   hg: parse error: empty sequence
   (min first argument should be an iterable)
   [255]
   $ hg debugtemplate '{max(dict() % "")}'
   hg: parse error: empty sequence
   (max first argument should be an iterable)
   [255]
 
 Test min/max of if() result
 
   $ cd latesttag
   $ hg log -l1 -T '{min(if(true, revset("9:10"), ""))}\n'
   9
   $ hg log -l1 -T '{max(if(false, "", revset("9:10")))}\n'
   10
   $ hg log -l1 -T '{min(ifcontains("a", "aa", revset("9:10"), ""))}\n'
   9
   $ hg log -l1 -T '{max(ifcontains("a", "bb", "", revset("9:10")))}\n'
   10
   $ hg log -l1 -T '{min(ifeq(0, 0, revset("9:10"), ""))}\n'
   9
   $ hg log -l1 -T '{max(ifeq(0, 1, "", revset("9:10")))}\n'
   10
   $ cd ..
 
 Test laziness of if() then/else clause
 
   $ hg debugtemplate '{count(0)}'
   hg: parse error: not countable
   (incompatible use of template filter 'count')
   [255]
   $ hg debugtemplate '{if(true, "", count(0))}'
   $ hg debugtemplate '{if(false, count(0), "")}'
   $ hg debugtemplate '{ifcontains("a", "aa", "", count(0))}'
   $ hg debugtemplate '{ifcontains("a", "bb", count(0), "")}'
   $ hg debugtemplate '{ifeq(0, 0, "", count(0))}'
   $ hg debugtemplate '{ifeq(0, 1, count(0), "")}'
 
 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]
 
 Set up repository containing template fragments in commit metadata:
 
   $ hg init r
   $ cd r
   $ echo a > a
   $ hg ci -Am '{rev}'
   adding a
 
   $ hg branch -q 'text.{rev}'
   $ echo aa >> aa
   $ hg ci -u '{node|short}' -m 'desc to be wrapped desc to be wrapped'
 
 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: not a dictionary
   (get() expects a dict as first argument)
   [255]
 
 Test json filter applied to wrapped object:
 
   $ hg log -r0 -T '{files|json}\n'
   ["a"]
   $ hg log -r0 -T '{extras|json}\n'
   {"branch": "default"}
   $ hg log -r0 -T '{date|json}\n'
   [0, 0]
 
 Test json filter applied to map result:
 
   $ hg log -r0 -T '{json(extras % "{key}")}\n'
   ["branch"]
 
 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
 
   $ hg log --template '{shortest("f")}\n' -l1
   f
 
   $ hg log --template '{shortest("0123456789012345678901234567890123456789")}\n' -l1
   0123456789012345678901234567890123456789
 
   $ hg log --template '{shortest("01234567890123456789012345678901234567890123456789")}\n' -l1
   01234567890123456789012345678901234567890123456789
 
   $ hg log --template '{shortest("not a hex string")}\n' -l1
   not a hex string
 
   $ hg log --template '{shortest("not a hex string, but it'\''s 40 bytes long")}\n' -l1
   not a hex string, but it's 40 bytes long
 
   $ hg log --template '{shortest("ffffffffffffffffffffffffffffffffffffffff")}\n' -l1
   ffff
 
   $ hg log --template '{shortest("fffffff")}\n' -l1
   ffff
 
   $ hg log --template '{shortest("ff")}\n' -l1
   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(min(revset(r"0")), "0 of hybriditem is also True")}\n'
+  0 of hybriditem is also True
   $ 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(revset(r"0"), "non-empty list is True")}\n'
   non-empty list is True
   $ hg log -r 0 -T '{if(revset(r"0") % "", "list of empty strings is True")}\n'
   list of empty strings is True
   $ 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
 
   $ hg log -l1 -T '{ifcontains("branch", extras, "t", "f")}\n'
   t
   $ hg log -l1 -T '{ifcontains("branch", extras % "{key}", "t", "f")}\n'
   t
   $ hg log -l1 -T '{ifcontains("branc", extras % "{key}", "t", "f")}\n'
   f
   $ hg log -l1 -T '{ifcontains("branc", stringify(extras % "{key}"), "t", "f")}\n'
   t
 
 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
 
 Invalid arguments passed to revset()
 
   $ hg log -T '{revset("%whatever", 0)}\n'
   hg: parse error: unexpected revspec format character w
   [255]
   $ hg log -T '{revset("%lwhatever", files)}\n'
   hg: parse error: unexpected revspec format character w
   [255]
   $ hg log -T '{revset("%s %s", 0)}\n'
   hg: parse error: missing argument for revspec
   [255]
   $ hg log -T '{revset("", 0)}\n'
   hg: parse error: too many revspec arguments specified
   [255]
   $ hg log -T '{revset("%s", 0, 1)}\n'
   hg: parse error: too many revspec arguments specified
   [255]
   $ hg log -T '{revset("%", 0)}\n'
   hg: parse error: incomplete revspec format character
   [255]
   $ hg log -T '{revset("%l", 0)}\n'
   hg: parse error: incomplete revspec format character
   [255]
   $ hg log -T '{revset("%d", 'foo')}\n'
   hg: parse error: invalid argument for revspec
   [255]
   $ hg log -T '{revset("%ld", files)}\n'
   hg: parse error: invalid argument for revspec
   [255]
   $ hg log -T '{revset("%ls", 0)}\n'
   hg: parse error: invalid argument for revspec
   [255]
   $ hg log -T '{revset("%b", 'foo')}\n'
   hg: parse error: invalid argument for revspec
   [255]
   $ hg log -T '{revset("%lb", files)}\n'
   hg: parse error: invalid argument for revspec
   [255]
   $ hg log -T '{revset("%r", 0)}\n'
   hg: parse error: invalid argument for revspec
   [255]
 
 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
   
   $ hg rm a
   $ hg log -r "wdir()" -T "{rev}\n{join(files('*'), '\n')}\n"
   2147483647
   aa
   b
   $ hg revert a
 
 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
 
 Test stringify on sub expressions
 
   $ 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 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
 
 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"
 
 Set up repository for non-ascii encoding tests:
 
   $ hg init nonascii
   $ cd nonascii
   $ $PYTHON <<EOF
   > open('latin1', 'wb').write(b'\xe9')
   > open('utf-8', 'wb').write(b'\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 should take input as utf-8 if it was converted from utf-8:
 
   $ HGENCODING=latin-1 hg log -T "{branch|json}\n" -r0
   "\u00e9"
   $ HGENCODING=latin-1 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 "coerced to string: {rev|utf8}\n" -r0
   coerced to string: 0
 
 pad width:
 
   $ HGENCODING=utf-8 hg debugtemplate "{pad('`cat utf-8`', 2, '-')}\n"
   \xc3\xa9- (esc)
 
   $ cd ..