upstream/mercurial-mirror Files · mercurial/strutil.py

diff: add --inverse option...

diff: add --inverse option Most of the time, one can reverse a diff by swapping the revisions passed with -r but it happens that if you use the global -R, and diff against the tip of the current repo, you can't swap the revisions. One use-case for that is reviewing changes from a bundle before unbundling. One could also pipe the output of `hg diff` to a command line filter that reverses the diff, but that would remove the benefit from color diffs. Therefore, having an option in `hg diff` to reverse a diff is a good thing. The option flag selection was tricky. GNU patch uses -R/--reverse but -R is already used as a global option and --reverse would make --rev ambiguous.

Martin Geisler - - Load All Authors

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      # strutil.py - string utilities for Mercurial

      #

      # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>

      #

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

      # GNU General Public License version 2, incorporated herein by reference.

      def findall(haystack, needle, start=0, end=None):

          if end is None:

              end = len(haystack)

          if end < 0:

              end += len(haystack)

          if start < 0:

              start += len(haystack)

          while start < end:

              c = haystack.find(needle, start, end)

              if c == -1:

                  break

              yield c

              start = c + 1

      def rfindall(haystack, needle, start=0, end=None):

          if end is None:

              end = len(haystack)

          if end < 0:

              end += len(haystack)

          if start < 0:

              start += len(haystack)

          while end >= 0:

              c = haystack.rfind(needle, start, end)

              if c == -1:

                  break

              yield c

              end = c - 1

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				# strutil.py - string utilities for Mercurial
				#
				# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2, incorporated herein by reference.

				def findall(haystack, needle, start=0, end=None):
				if end is None:
				end = len(haystack)
				if end < 0:
				end += len(haystack)
				if start < 0:
				start += len(haystack)
				while start < end:
				c = haystack.find(needle, start, end)
				if c == -1:
				break
				yield c
				start = c + 1

				def rfindall(haystack, needle, start=0, end=None):
				if end is None:
				end = len(haystack)
				if end < 0:
				end += len(haystack)
				if start < 0:
				start += len(haystack)
				while end >= 0:
				c = haystack.rfind(needle, start, end)
				if c == -1:
				break
				yield c
				end = c - 1