jsonFileDirectory = apiChangesJsonDirectory
}

static List<String> toPatterns(List<String> packages) {
    packages.collect {
        it.replaceAll('\\*\\*', '###')
            .replaceAll('/\\*', '/[A-Z][a-z_A-Z0-9]+')
            .replaceAll('$', '\\$')
            .replaceAll('/', '[.]')
            .replaceAll('###', '.*?')
    }
}

private String writeFilterPreset(Project project) {

cd "${KUBE_ROOT}"

# output_name targets a target directory and prints the base name of
# an output file for that target.
output_name () {
    what="$1"

    echo "${what}" | sed -e 's/[^a-zA-Z0-9_-]/_/g' -e 's/$/.out/'
}

# run invokes apidiff once per target and stores the output
# file(s) in the given directory.
run () {
    out="$1"
    mkdir -p "$out"
    for d in "${targets[@]}"; do

000000b0  74 30 1e 17 0d 31 36 30  31 30 31 30 30 30 30 30  |t0...16010100000|
000000c0  30 5a 17 0d 32 35 30 31  30 31 30 30 30 30 30 30  |0Z..250101000000|
000000d0  5a 30 1a 31 0b 30 09 06  03 55 04 0a 13 02 47 6f  |Z0.1.0...U....Go|
000000e0  31 0b 30 09 06 03 55 04  03 13 02 47 6f 30 81 9f  |1.0...U....Go0..|
000000f0  30 0d 06 09 2a 86 48 86  f7 0d 01 01 01 05 00 03  |0...*.H.........|

000000b0  74 30 1e 17 0d 31 36 30  31 30 31 30 30 30 30 30  |t0...16010100000|
000000c0  30 5a 17 0d 32 35 30 31  30 31 30 30 30 30 30 30  |0Z..250101000000|
000000d0  5a 30 1a 31 0b 30 09 06  03 55 04 0a 13 02 47 6f  |Z0.1.0...U....Go|
000000e0  31 0b 30 09 06 03 55 04  03 13 02 47 6f 30 81 9f  |1.0...U....Go0..|
000000f0  30 0d 06 09 2a 86 48 86  f7 0d 01 01 01 05 00 03  |0...*.H.........|

000000b0  74 30 1e 17 0d 31 36 30  31 30 31 30 30 30 30 30  |t0...16010100000|
000000c0  30 5a 17 0d 32 35 30 31  30 31 30 30 30 30 30 30  |0Z..250101000000|
000000d0  5a 30 1a 31 0b 30 09 06  03 55 04 0a 13 02 47 6f  |Z0.1.0...U....Go|
000000e0  31 0b 30 09 06 03 55 04  03 13 02 47 6f 30 81 9f  |1.0...U....Go0..|
000000f0  30 0d 06 09 2a 86 48 86  f7 0d 01 01 01 05 00 03  |0...*.H.........|

000000b0  74 30 1e 17 0d 31 36 30  31 30 31 30 30 30 30 30  |t0...16010100000|
000000c0  30 5a 17 0d 32 35 30 31  30 31 30 30 30 30 30 30  |0Z..250101000000|
000000d0  5a 30 1a 31 0b 30 09 06  03 55 04 0a 13 02 47 6f  |Z0.1.0...U....Go|
000000e0  31 0b 30 09 06 03 55 04  03 13 02 47 6f 30 81 9f  |1.0...U....Go0..|
000000f0  30 0d 06 09 2a 86 48 86  f7 0d 01 01 01 05 00 03  |0...*.H.........|

000000b0  74 30 1e 17 0d 31 36 30  31 30 31 30 30 30 30 30  |t0...16010100000|
000000c0  30 5a 17 0d 32 35 30 31  30 31 30 30 30 30 30 30  |0Z..250101000000|
000000d0  5a 30 1a 31 0b 30 09 06  03 55 04 0a 13 02 47 6f  |Z0.1.0...U....Go|
000000e0  31 0b 30 09 06 03 55 04  03 13 02 47 6f 30 81 9f  |1.0...U....Go0..|
000000f0  30 0d 06 09 2a 86 48 86  f7 0d 01 01 01 05 00 03  |0...*.H.........|

000000b0  74 30 1e 17 0d 31 36 30  31 30 31 30 30 30 30 30  |t0...16010100000|
000000c0  30 5a 17 0d 32 35 30 31  30 31 30 30 30 30 30 30  |0Z..250101000000|
000000d0  5a 30 1a 31 0b 30 09 06  03 55 04 0a 13 02 47 6f  |Z0.1.0...U....Go|
000000e0  31 0b 30 09 06 03 55 04  03 13 02 47 6f 30 81 9f  |1.0...U....Go0..|
000000f0  30 0d 06 09 2a 86 48 86  f7 0d 01 01 01 05 00 03  |0...*.H.........|

	}
	return op
}

// IsWordChar reports whether r is considered a “word character”
// during the evaluation of the \b and \B zero-width assertions.
// These assertions are ASCII-only: the word characters are [A-Za-z0-9_].
func IsWordChar(r rune) bool {
	// Test for lowercase letters first, as these occur more
	// frequently than uppercase letters in common cases.