flipdiff man page on YellowDog

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FLIPDIFF(1)			   Man pages			   FLIPDIFF(1)

NAME
       flipdiff - exchange the order of two incremental patches

SYNOPSIS
       flipdiff [-p n] [-U n] [-Bbiwz] [--in-place] diff1 diff2

       flipdiff {[--help] [--version]}

DESCRIPTION
       flipdiff exchanges the order of two patch files that apply one after
       the other. The patches must be “clean”: the context lines must match
       and there should be no mis-matched offsets.

       The swapped patches are sent to standard output, with a marker line
       (“=== 8< === cut here === 8< ===”) between them, unless the --in-place
       option is passed. In that case, the output is written back to the
       original input files.

OPTIONS
       -p n   When comparing filenames, ignore the first n pathname components
	      from both patches. (This is similar to the -p option to GNU
	      patch(1).)

       -U n   Attempt to display n lines of context (requires at least n lines
	      of context in both input files). (This is similar to the -U
	      option to GNU diff(1).)

       -d pattern
	      Don't display any context on files that match the shell wildcard
	      pattern. This option can be given multiple times.

	      Note that the interpretation of the shell wildcard pattern does
	      not count slash characters or periods as special (in other
	      words, no flags are given to fnmatch). This is so that
	      “*/basename”-type patterns can be given without limiting the
	      number of pathname components.

       -i     Consider upper- and lower-case to be the same.

       -w     Ignore whitespace changes in patches.

       -b     Ignore changes in the amount of whitespace.

       -B     Ignore changes whose lines are all blank.

       -z     Decompress files with extensions .gz and .bz2.

       --in-place
	      Write output to the original input files.

       --help Display a short usage message.

       --version
	      Display the version number of flipdiff.

LIMITATIONS
       This is only been very lightly tested, and may not even work. Using
       --in-place is not recommended at the moment.

       There are some cases in which it is not possible to meaningfully flip
       patches without understanding the semantics of the content. This
       program only uses complete lines that appear at some stage during the
       application of the two patches, and never composes a line from parts.

       Because of this, it is generally a good idea to read through the output
       to check that it makes sense.

AUTHOR
       Tim Waugh <twaugh@redhat.com>.

patchutils			31 January 2003			   FLIPDIFF(1)
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