combinediff man page on ElementaryOS

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COMBINEDIFF(1)			   Man pages			COMBINEDIFF(1)

NAME
       combinediff - create a cumulative unified patch from two incremental
       patches

SYNOPSIS
       combinediff [[-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]] [[--interpolate] | [--combine]] diff1
		   diff2

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

DESCRIPTION
       combinediff creates a unified diff that expresses the sum of two diffs.
       The diff files must be listed in the order that they are to be applied.
       For best results, the diffs must have at least three lines of context.

       Since combinediff doesn't have the advantage of being able to look at
       the files that are to be modified, it has stricter requirements on the
       input format than patch(1) does. The output of GNU diff will be okay,
       even with extensions, but if you intend to use a hand-edited patch it
       might be wise to clean up the offsets and counts using recountdiff(1)
       first.

       Note, however, that the two patches must be in strict incremental
       order. In other words, the second patch must be relative to the state
       of the original set of files after the first patch was applied.

       The diffs may be in context format. The output, however, will be in
       unified format.

OPTIONS
       -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
	   patch(1).)

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

       -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
	   components.

       -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.

       --interpolate
	   Run as “interdiff”. See interdiff(1) for more information about how
	   the behaviour is altered in this mode.

       --combine
	   Run as “combinediff”. This is the default.

       --help
	   Display a short usage message.

       --version
	   Display the version number of combinediff.

BUGS
       The -U option is a bit erratic: it can control the amount of context
       displayed for files that are modified in both patches, but not for
       files that only appear in one patch (which appear with the same amount
       of context in the output as in the input).

SEE ALSO
       interdiff(1)

AUTHOR
       Tim Waugh <twaugh@redhat.com>
	   Package maintainer

patchutils			  23 Jan 2009			COMBINEDIFF(1)
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