Awk script to match pattern till blank line

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how to read a file till it encounters a blank line

LEARN ABOUT SUSE

flipdiff

FLIPDIFF(1)							     Man pages							       FLIPDIFF(1)

NAME

       flipdiff - exchange the order of two incremental patches

SYNOPSIS

       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]}

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, --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.

       --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>
	   Package maintainer

patchutils							  23 January 2009						       FLIPDIFF(1)

Shell Programming and Scripting