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debugdeltachain: avoid division by zero when a chain is empty...

debugdeltachain: avoid division by zero when a chain is empty The two ratios chainratio and extraratio are computed using dividers that may be zero when the file is empty. As the denominators are integers, the limit of the ratio "just before zero" is the numerator value itself. If the numerator itself is zero, the ratio value is still meaningful: in both cases, a "good" value is a low ratio, and a size of zero is the optimal case.

Martin von Zweigbergk - - Load All Authors

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      # narrowcopies.py - extensions to mercurial copies module to support narrow

      # clones

      #

      # Copyright 2017 Google, Inc.

      #

      # 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

      from mercurial import (

          copies,

          extensions,

      )

      def setup(repo):

          def _computeforwardmissing(orig, a, b, match=None):

              missing = orig(a, b, match)

              narrowmatch = repo.narrowmatch()

              if narrowmatch.always():

                  return missing

              missing = [f for f in missing if narrowmatch(f)]

              return missing

          def _checkcopies(orig, srcctx, dstctx, f, base, tca, remotebase, limit,

                           data):

              narrowmatch = repo.narrowmatch()

              if not narrowmatch(f):

                  return

              orig(srcctx, dstctx, f, base, tca, remotebase, limit, data)

          extensions.wrapfunction(copies, '_computeforwardmissing',

                                  _computeforwardmissing)

          extensions.wrapfunction(copies, '_checkcopies', _checkcopies)

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				# narrowcopies.py - extensions to mercurial copies module to support narrow
				# clones
				#
				# Copyright 2017 Google, Inc.
				#
				# 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

				from mercurial import (
				copies,
				extensions,
				)

				def setup(repo):
				def _computeforwardmissing(orig, a, b, match=None):
				missing = orig(a, b, match)
				narrowmatch = repo.narrowmatch()
				if narrowmatch.always():
				return missing
				missing = [f for f in missing if narrowmatch(f)]
				return missing

				def _checkcopies(orig, srcctx, dstctx, f, base, tca, remotebase, limit,
				data):
				narrowmatch = repo.narrowmatch()
				if not narrowmatch(f):
				return
				orig(srcctx, dstctx, f, base, tca, remotebase, limit, data)

				extensions.wrapfunction(copies, '_computeforwardmissing',
				_computeforwardmissing)
				extensions.wrapfunction(copies, '_checkcopies', _checkcopies)