flipdiff - exchange the order of two incremental patches


   flipdiff [[-p n] | [--strip-match=n]] [[-U n] | [--unified=n]]
            [[-d PAT] | [--drop-context=PAT]] [[-q] | [--quiet]] [[-z] |
            [--decompress]] [[-b] | [--ignore-space-change]] [[-B] |
            [--ignore-blank-lines]] [[-i] | [--ignore-case]] [[-w] |
            [--ignore-all-space]] [--in-place] diff1 diff2

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


   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.


   -p n, --strip-match=n
       When comparing filenames, ignore the first n pathname components
       from both patches. (This is similar to the -p option to GNU

   -q, --quiet
       Quieter output. Don't emit rationale lines at the beginning of each

   -U n, --unified=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, --drop-context=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

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

   -w, --ignore-all-space
       Ignore whitespace changes in patches.

   -b, --ignore-space-change
       Ignore changes in the amount of whitespace.

   -B, --ignore-blank-lines
       Ignore changes whose lines are all blank.

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

       Write output to the original input files.

       Display a short usage message.

       Display the version number of flipdiff.


   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.


   Tim Waugh <twaugh@redhat.com>
       Package maintainer


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