--- /dev/null
+--- [Deterministic header]
++++ [Deterministic header]
+@@ -1,8 +1,8 @@
+ ...
+-'some_string'
+-b'\\xa3'
++"some_string"
++b"\\xa3"
+ Name
+ None
+ True
+ False
+ 1
+@@ -29,63 +29,84 @@
+ ~great
+ +value
+ -1
+ ~int and not v1 ^ 123 + v2 | True
+ (~int) and (not ((v1 ^ (123 + v2)) | True))
+-+really ** -confusing ** ~operator ** -precedence
+-flags & ~ select.EPOLLIN and waiters.write_task is not None
+++(really ** -(confusing ** ~(operator ** -precedence)))
++flags & ~select.EPOLLIN and waiters.write_task is not None
+ lambda arg: None
+ lambda a=True: a
+ lambda a, b, c=True: a
+-lambda a, b, c=True, *, d=(1 << v2), e='str': a
+-lambda a, b, c=True, *vararg, d=(v1 << 2), e='str', **kwargs: a + b
++lambda a, b, c=True, *, d=(1 << v2), e="str": a
++lambda a, b, c=True, *vararg, d=(v1 << 2), e="str", **kwargs: a + b
+ manylambdas = lambda x=lambda y=lambda z=1: z: y(): x()
+-foo = (lambda port_id, ignore_missing: {"port1": port1_resource, "port2": port2_resource}[port_id])
++foo = lambda port_id, ignore_missing: {
++ "port1": port1_resource,
++ "port2": port2_resource,
++}[port_id]
+ 1 if True else 2
+ str or None if True else str or bytes or None
+ (str or None) if True else (str or bytes or None)
+ str or None if (1 if True else 2) else str or bytes or None
+ (str or None) if (1 if True else 2) else (str or bytes or None)
+-((super_long_variable_name or None) if (1 if super_long_test_name else 2) else (str or bytes or None))
+-{'2.7': dead, '3.7': (long_live or die_hard)}
+-{'2.7': dead, '3.7': (long_live or die_hard), **{'3.6': verygood}}
++(
++ (super_long_variable_name or None)
++ if (1 if super_long_test_name else 2)
++ else (str or bytes or None)
++)
++{"2.7": dead, "3.7": (long_live or die_hard)}
++{"2.7": dead, "3.7": (long_live or die_hard), **{"3.6": verygood}}
+ {**a, **b, **c}
+-{'2.7', '3.6', '3.7', '3.8', '3.9', ('4.0' if gilectomy else '3.10')}
+-({'a': 'b'}, (True or False), (+value), 'string', b'bytes') or None
++{"2.7", "3.6", "3.7", "3.8", "3.9", ("4.0" if gilectomy else "3.10")}
++({"a": "b"}, (True or False), (+value), "string", b"bytes") or None
+ ()
+ (1,)
+ (1, 2)
+ (1, 2, 3)
+ []
+ [1, 2, 3, 4, 5, 6, 7, 8, 9, (10 or A), (11 or B), (12 or C)]
+-[1, 2, 3,]
++[1, 2, 3]
+ [*a]
+ [*range(10)]
+-[*a, 4, 5,]
+-[4, *a, 5,]
+-[this_is_a_very_long_variable_which_will_force_a_delimiter_split, element, another, *more]
++[*a, 4, 5]
++[4, *a, 5]
++[
++ this_is_a_very_long_variable_which_will_force_a_delimiter_split,
++ element,
++ another,
++ *more,
++]
+ {i for i in (1, 2, 3)}
+ {(i ** 2) for i in (1, 2, 3)}
+-{(i ** 2) for i, _ in ((1, 'a'), (2, 'b'), (3, 'c'))}
++{(i ** 2) for i, _ in ((1, "a"), (2, "b"), (3, "c"))}
+ {((i ** 2) + j) for i in (1, 2, 3) for j in (1, 2, 3)}
+ [i for i in (1, 2, 3)]
+ [(i ** 2) for i in (1, 2, 3)]
+-[(i ** 2) for i, _ in ((1, 'a'), (2, 'b'), (3, 'c'))]
++[(i ** 2) for i, _ in ((1, "a"), (2, "b"), (3, "c"))]
+ [((i ** 2) + j) for i in (1, 2, 3) for j in (1, 2, 3)]
+ {i: 0 for i in (1, 2, 3)}
+-{i: j for i, j in ((1, 'a'), (2, 'b'), (3, 'c'))}
++{i: j for i, j in ((1, "a"), (2, "b"), (3, "c"))}
+ {a: b * 2 for a, b in dictionary.items()}
+ {a: b * -2 for a, b in dictionary.items()}
+-{k: v for k, v in this_is_a_very_long_variable_which_will_cause_a_trailing_comma_which_breaks_the_comprehension}
++{
++ k: v
++ for k, v in this_is_a_very_long_variable_which_will_cause_a_trailing_comma_which_breaks_the_comprehension
++}
+ Python3 > Python2 > COBOL
+ Life is Life
+ call()
+ call(arg)
+-call(kwarg='hey')
+-call(arg, kwarg='hey')
+-call(arg, another, kwarg='hey', **kwargs)
+-call(this_is_a_very_long_variable_which_will_force_a_delimiter_split, arg, another, kwarg='hey', **kwargs) # note: no trailing comma pre-3.6
++call(kwarg="hey")
++call(arg, kwarg="hey")
++call(arg, another, kwarg="hey", **kwargs)
++call(
++ this_is_a_very_long_variable_which_will_force_a_delimiter_split,
++ arg,
++ another,
++ kwarg="hey",
++ **kwargs
++) # note: no trailing comma pre-3.6
+ call(*gidgets[:2])
+ call(a, *gidgets[:2])
+ call(**self.screen_kwargs)
+ call(b, **self.screen_kwargs)
+ lukasz.langa.pl
+@@ -94,26 +115,24 @@
+ 1.0 .real
+ ....__class__
+ list[str]
+ dict[str, int]
+ tuple[str, ...]
+-tuple[
+- str, int, float, dict[str, int]
+-]
++tuple[str, int, float, dict[str, int]]
+ tuple[str, int, float, dict[str, int],]
+ very_long_variable_name_filters: t.List[
+ t.Tuple[str, t.Union[str, t.List[t.Optional[str]]]],
+ ]
+ xxxx_xxxxx_xxxx_xxx: Callable[..., List[SomeClass]] = classmethod( # type: ignore
+ sync(async_xxxx_xxx_xxxx_xxxxx_xxxx_xxx.__func__)
+ )
+ xxxx_xxx_xxxx_xxxxx_xxxx_xxx: Callable[..., List[SomeClass]] = classmethod( # type: ignore
+ sync(async_xxxx_xxx_xxxx_xxxxx_xxxx_xxx.__func__)
+ )
+-xxxx_xxx_xxxx_xxxxx_xxxx_xxx: Callable[
+- ..., List[SomeClass]
+-] = classmethod(sync(async_xxxx_xxx_xxxx_xxxxx_xxxx_xxx.__func__)) # type: ignore
++xxxx_xxx_xxxx_xxxxx_xxxx_xxx: Callable[..., List[SomeClass]] = classmethod(
++ sync(async_xxxx_xxx_xxxx_xxxxx_xxxx_xxx.__func__)
++) # type: ignore
+ slice[0]
+ slice[0:1]
+ slice[0:1:2]
+ slice[:]
+ slice[:-1]
+@@ -137,118 +156,197 @@
+ numpy[-(c + 1) :, d]
+ numpy[:, l[-2]]
+ numpy[:, ::-1]
+ numpy[np.newaxis, :]
+ (str or None) if (sys.version_info[0] > (3,)) else (str or bytes or None)
+-{'2.7': dead, '3.7': long_live or die_hard}
+-{'2.7', '3.6', '3.7', '3.8', '3.9', '4.0' if gilectomy else '3.10'}
++{"2.7": dead, "3.7": long_live or die_hard}
++{"2.7", "3.6", "3.7", "3.8", "3.9", "4.0" if gilectomy else "3.10"}
+ [1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or A, 11 or B, 12 or C]
+ (SomeName)
+ SomeName
+ (Good, Bad, Ugly)
+ (i for i in (1, 2, 3))
+ ((i ** 2) for i in (1, 2, 3))
+-((i ** 2) for i, _ in ((1, 'a'), (2, 'b'), (3, 'c')))
++((i ** 2) for i, _ in ((1, "a"), (2, "b"), (3, "c")))
+ (((i ** 2) + j) for i in (1, 2, 3) for j in (1, 2, 3))
+ (*starred,)
+-{"id": "1","type": "type","started_at": now(),"ended_at": now() + timedelta(days=10),"priority": 1,"import_session_id": 1,**kwargs}
++{
++ "id": "1",
++ "type": "type",
++ "started_at": now(),
++ "ended_at": now() + timedelta(days=10),
++ "priority": 1,
++ "import_session_id": 1,
++ **kwargs,
++}
+ a = (1,)
+-b = 1,
++b = (1,)
+ c = 1
+ d = (1,) + a + (2,)
+ e = (1,).count(1)
+ f = 1, *range(10)
+ g = 1, *"ten"
+-what_is_up_with_those_new_coord_names = (coord_names + set(vars_to_create)) + set(vars_to_remove)
+-what_is_up_with_those_new_coord_names = (coord_names | set(vars_to_create)) - set(vars_to_remove)
+-result = session.query(models.Customer.id).filter(models.Customer.account_id == account_id, models.Customer.email == email_address).order_by(models.Customer.id.asc()).all()
+-result = session.query(models.Customer.id).filter(models.Customer.account_id == account_id, models.Customer.email == email_address).order_by(models.Customer.id.asc(),).all()
++what_is_up_with_those_new_coord_names = (coord_names + set(vars_to_create)) + set(
++ vars_to_remove
++)
++what_is_up_with_those_new_coord_names = (coord_names | set(vars_to_create)) - set(
++ vars_to_remove
++)
++result = (
++ session.query(models.Customer.id)
++ .filter(
++ models.Customer.account_id == account_id, models.Customer.email == email_address
++ )
++ .order_by(models.Customer.id.asc())
++ .all()
++)
++result = (
++ session.query(models.Customer.id)
++ .filter(
++ models.Customer.account_id == account_id, models.Customer.email == email_address
++ )
++ .order_by(models.Customer.id.asc())
++ .all()
++)
+ Ø = set()
+ authors.łukasz.say_thanks()
+ mapping = {
+ A: 0.25 * (10.0 / 12),
+ B: 0.1 * (10.0 / 12),
+ C: 0.1 * (10.0 / 12),
+ D: 0.1 * (10.0 / 12),
+ }
+
++
+ def gen():
+ yield from outside_of_generator
+- a = (yield)
+- b = ((yield))
+- c = (((yield)))
++ a = yield
++ b = yield
++ c = yield
++
+
+ async def f():
+ await some.complicated[0].call(with_args=(True or (1 is not 1)))
+-print(* [] or [1])
++
++
++print(*[] or [1])
+ print(**{1: 3} if False else {x: x for x in range(3)})
+-print(* lambda x: x)
+-assert(not Test),("Short message")
+-assert this is ComplexTest and not requirements.fit_in_a_single_line(force=False), "Short message"
+-assert(((parens is TooMany)))
+-for x, in (1,), (2,), (3,): ...
+-for y in (): ...
+-for z in (i for i in (1, 2, 3)): ...
+-for i in (call()): ...
+-for j in (1 + (2 + 3)): ...
+-while(this and that): ...
+-for addr_family, addr_type, addr_proto, addr_canonname, addr_sockaddr in socket.getaddrinfo('google.com', 'http'):
++print(*lambda x: x)
++assert not Test, "Short message"
++assert this is ComplexTest and not requirements.fit_in_a_single_line(
++ force=False
++), "Short message"
++assert parens is TooMany
++for (x,) in (1,), (2,), (3,):
++ ...
++for y in ():
++ ...
++for z in (i for i in (1, 2, 3)):
++ ...
++for i in call():
++ ...
++for j in 1 + (2 + 3):
++ ...
++while this and that:
++ ...
++for (
++ addr_family,
++ addr_type,
++ addr_proto,
++ addr_canonname,
++ addr_sockaddr,
++) in socket.getaddrinfo("google.com", "http"):
+ pass
+-a = aaaa.bbbb.cccc.dddd.eeee.ffff.gggg.hhhh.iiii.jjjj.kkkk.llll.mmmm.nnnn.oooo.pppp in qqqq.rrrr.ssss.tttt.uuuu.vvvv.xxxx.yyyy.zzzz
+-a = aaaa.bbbb.cccc.dddd.eeee.ffff.gggg.hhhh.iiii.jjjj.kkkk.llll.mmmm.nnnn.oooo.pppp not in qqqq.rrrr.ssss.tttt.uuuu.vvvv.xxxx.yyyy.zzzz
+-a = aaaa.bbbb.cccc.dddd.eeee.ffff.gggg.hhhh.iiii.jjjj.kkkk.llll.mmmm.nnnn.oooo.pppp is qqqq.rrrr.ssss.tttt.uuuu.vvvv.xxxx.yyyy.zzzz
+-a = aaaa.bbbb.cccc.dddd.eeee.ffff.gggg.hhhh.iiii.jjjj.kkkk.llll.mmmm.nnnn.oooo.pppp is not qqqq.rrrr.ssss.tttt.uuuu.vvvv.xxxx.yyyy.zzzz
+-if (
+- threading.current_thread() != threading.main_thread() and
+- threading.current_thread() != threading.main_thread() or
+- signal.getsignal(signal.SIGINT) != signal.default_int_handler
+-):
+- return True
+-if (
+- aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa |
+- aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+-):
+- return True
+-if (
+- aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &
+- aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+-):
+- return True
+-if (
+- aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +
+- aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+-):
+- return True
+-if (
+- aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa -
+- aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+-):
+- return True
+-if (
+- aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *
+- aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+-):
+- return True
+-if (
+- aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa /
+- aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+-):
+- return True
+-if (
+- ~ aaaa.a + aaaa.b - aaaa.c * aaaa.d / aaaa.e | aaaa.f & aaaa.g % aaaa.h ^ aaaa.i << aaaa.k >> aaaa.l ** aaaa.m // aaaa.n
+-):
+- return True
+-if (
+- ~ aaaaaaaa.a + aaaaaaaa.b - aaaaaaaa.c @ aaaaaaaa.d / aaaaaaaa.e | aaaaaaaa.f & aaaaaaaa.g % aaaaaaaa.h ^ aaaaaaaa.i << aaaaaaaa.k >> aaaaaaaa.l ** aaaaaaaa.m // aaaaaaaa.n
+-):
+- return True
+-if (
+- ~ aaaaaaaaaaaaaaaa.a + aaaaaaaaaaaaaaaa.b - aaaaaaaaaaaaaaaa.c * aaaaaaaaaaaaaaaa.d @ aaaaaaaaaaaaaaaa.e | aaaaaaaaaaaaaaaa.f & aaaaaaaaaaaaaaaa.g % aaaaaaaaaaaaaaaa.h ^ aaaaaaaaaaaaaaaa.i << aaaaaaaaaaaaaaaa.k >> aaaaaaaaaaaaaaaa.l ** aaaaaaaaaaaaaaaa.m // aaaaaaaaaaaaaaaa.n
+-):
+- return True
+-aaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaa - aaaaaaaaaaaaaaaa * (aaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaa) / (aaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaa)
++a = (
++ aaaa.bbbb.cccc.dddd.eeee.ffff.gggg.hhhh.iiii.jjjj.kkkk.llll.mmmm.nnnn.oooo.pppp
++ in qqqq.rrrr.ssss.tttt.uuuu.vvvv.xxxx.yyyy.zzzz
++)
++a = (
++ aaaa.bbbb.cccc.dddd.eeee.ffff.gggg.hhhh.iiii.jjjj.kkkk.llll.mmmm.nnnn.oooo.pppp
++ not in qqqq.rrrr.ssss.tttt.uuuu.vvvv.xxxx.yyyy.zzzz
++)
++a = (
++ aaaa.bbbb.cccc.dddd.eeee.ffff.gggg.hhhh.iiii.jjjj.kkkk.llll.mmmm.nnnn.oooo.pppp
++ is qqqq.rrrr.ssss.tttt.uuuu.vvvv.xxxx.yyyy.zzzz
++)
++a = (
++ aaaa.bbbb.cccc.dddd.eeee.ffff.gggg.hhhh.iiii.jjjj.kkkk.llll.mmmm.nnnn.oooo.pppp
++ is not qqqq.rrrr.ssss.tttt.uuuu.vvvv.xxxx.yyyy.zzzz
++)
++if (
++ threading.current_thread() != threading.main_thread()
++ and threading.current_thread() != threading.main_thread()
++ or signal.getsignal(signal.SIGINT) != signal.default_int_handler
++):
++ return True
++if (
++ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++ | aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++):
++ return True
++if (
++ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++ & aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++):
++ return True
++if (
++ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++ + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++):
++ return True
++if (
++ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++ - aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++):
++ return True
++if (
++ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++ * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++):
++ return True
++if (
++ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++ / aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++):
++ return True
++if (
++ ~aaaa.a + aaaa.b - aaaa.c * aaaa.d / aaaa.e
++ | aaaa.f & aaaa.g % aaaa.h ^ aaaa.i << aaaa.k >> aaaa.l ** aaaa.m // aaaa.n
++):
++ return True
++if (
++ ~aaaaaaaa.a + aaaaaaaa.b - aaaaaaaa.c @ aaaaaaaa.d / aaaaaaaa.e
++ | aaaaaaaa.f & aaaaaaaa.g % aaaaaaaa.h
++ ^ aaaaaaaa.i << aaaaaaaa.k >> aaaaaaaa.l ** aaaaaaaa.m // aaaaaaaa.n
++):
++ return True
++if (
++ ~aaaaaaaaaaaaaaaa.a
++ + aaaaaaaaaaaaaaaa.b
++ - aaaaaaaaaaaaaaaa.c * aaaaaaaaaaaaaaaa.d @ aaaaaaaaaaaaaaaa.e
++ | aaaaaaaaaaaaaaaa.f & aaaaaaaaaaaaaaaa.g % aaaaaaaaaaaaaaaa.h
++ ^ aaaaaaaaaaaaaaaa.i
++ << aaaaaaaaaaaaaaaa.k
++ >> aaaaaaaaaaaaaaaa.l ** aaaaaaaaaaaaaaaa.m // aaaaaaaaaaaaaaaa.n
++):
++ return True
++(
++ aaaaaaaaaaaaaaaa
++ + aaaaaaaaaaaaaaaa
++ - aaaaaaaaaaaaaaaa
++ * (aaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaa)
++ / (aaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaa)
++)
+ aaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaa
+-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >> aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++(
++ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++ >> aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++ << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++)
+ bbbb >> bbbb * bbbb
+-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ^bbbb.a & aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa^aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++(
++ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++ ^ bbbb.a & aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++ ^ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
++)
+ last_call()
+ # standalone comment at ENDMARKER
projects / etc / vim.git / blobdiff