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style: run a patched black on a subset of mercurial This applied black to the 20 smallest files in mercurial/: ls -S1 mercurial/*.py | tail -n20 | xargs black --skip-string-normalization Note that a few files failed to format, presumably due to a bug in my patch. The intent is to be able to compare results to D5064 with https://github.com/python/black/pull/826 applied to black. I skipped string normalization on this patch for clarity - in reality I think we'd want one pass without string normalization, followed by another to normalize strings (which is basically replacing ' with " globally.) # skip-blame mass-reformatting only Differential Revision: https://phab.mercurial-scm.org/D6342

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      # util.py - Utilities for declaring interfaces.

      #

      # Copyright 2018 Gregory Szorc <gregory.szorc@gmail.com>

      #

      # This software may be used and distributed according to the terms of the

      # GNU General Public License version 2 or any later version.

      # zope.interface imposes a run-time cost due to module import overhead and

      # bookkeeping for declaring interfaces. So, we use stubs for various

      # zope.interface primitives unless instructed otherwise.

      from __future__ import absolute_import

      from .. import (

          encoding,

      )

      if encoding.environ.get('HGREALINTERFACES'):

          from ..thirdparty.zope import (

              interface as zi,

          )

          Attribute = zi.Attribute

          Interface = zi.Interface

          implementer = zi.implementer

      else:

          class Attribute(object):

              def __init__(self, __name__, __doc__=''):

                  pass

          class Interface(object):

              def __init__(self, name, bases=(), attrs=None, __doc__=None,

                       __module__=None):

                  pass

          def implementer(*ifaces):

              def wrapper(cls):

                  return cls

              return wrapper

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				# util.py - Utilities for declaring interfaces.
				#
				# Copyright 2018 Gregory Szorc <gregory.szorc@gmail.com>
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2 or any later version.

				# zope.interface imposes a run-time cost due to module import overhead and
				# bookkeeping for declaring interfaces. So, we use stubs for various
				# zope.interface primitives unless instructed otherwise.

				from __future__ import absolute_import

				from .. import (
				encoding,
				)

				if encoding.environ.get('HGREALINTERFACES'):
				from ..thirdparty.zope import (
				interface as zi,
				)

				Attribute = zi.Attribute
				Interface = zi.Interface
				implementer = zi.implementer
				else:
				class Attribute(object):
				def __init__(self, __name__, __doc__=''):
				pass

				class Interface(object):
				def __init__(self, name, bases=(), attrs=None, __doc__=None,
				__module__=None):
				pass

				def implementer(*ifaces):
				def wrapper(cls):
				return cls

				return wrapper