tests/test-bdiff.py.out

cg1packer: fix `compressed` method

`cg1packer.compressed()` returns True even if `self._type` is 'UN'. This patch
fixes it.

test 'a\nc\n\n\n\n' 'a\nb\n\n\n'
test 'a\nb\nc\n' 'a\nc\n'
test '' ''
test 'a\nb\nc' 'a\nb\nc'
test 'a\nb\nc\nd\n' 'a\nd\n'
test 'a\nb\nc\nd\n' 'a\nc\ne\n'
test 'a\nb\nc\n' 'a\nc\n'
test 'a\n' 'c\na\nb\n'
test 'a\n' ''
test 'a\n' 'b\nc\n'
test 'a\n' 'c\na\n'
test '' 'adjfkjdjksdhfksj'
test '' 'ab'
test '' 'abc'
test 'a' 'a'
test 'ab' 'ab'
test 'abc' 'abc'
test 'a\n' 'a\n'
test 'a\nb' 'a\nb'
showdiff(
  'x\n\nx\n\nx\n\nx\n\nz\n',
  'x\n\nx\n\ny\n\nx\n\nx\n\nz\n'):
 'x\n\nx\n\n'
 6 6 '' -> 'y\n\n'
 'x\n\nx\n\nz\n'
showdiff(
  'x\n\nx\n\nx\n\nx\n\nz\n',
  'x\n\nx\n\ny\n\nx\n\ny\n\nx\n\nz\n'):
 'x\n\nx\n\n'
 6 6 '' -> 'y\n\n'
 'x\n\n'
 9 9 '' -> 'y\n\n'
 'x\n\nz\n'
showdiff(
  'a\nb\nb\nb\nc\n.\nd\ne\n.\nf\n',
  'a\nb\nb\na\nb\nb\nb\nc\n.\nb\nc\n.\nd\ne\nf\n'):
 'a\nb\nb\n'
 6 6 '' -> 'a\nb\nb\nb\nc\n.\n'
 'b\nc\n.\nd\ne\n'
 16 18 '.\n' -> ''
 'f\n'
done
done
Nice diff for a trivial change:
showdiff(
  '<0\n-\n<1\n-\n<2\n-\n<3\n-\n<4\n-\n',
  '>0\n-\n>1\n-\n>2\n-\n>3\n-\n>4\n-\n'):
 0 3 '<0\n' -> '>0\n'
 '-\n'
 5 8 '<1\n' -> '>1\n'
 '-\n'
 10 13 '<2\n' -> '>2\n'
 '-\n'
 15 18 '<3\n' -> '>3\n'
 '-\n'
 20 23 '<4\n' -> '>4\n'
 '-\n'
Diff 1 to 3 lines - preference for appending:
showdiff(
  'a\n',
  'a\na\na\n'):
 'a\n'
 2 2 '' -> 'a\na\n'
Diff 1 to 5 lines - preference for appending:
showdiff(
  'a\n',
  'a\na\na\na\na\n'):
 'a\n'
 2 2 '' -> 'a\na\na\na\n'
Diff 3 to 1 lines - preference for removing trailing lines:
showdiff(
  'a\na\na\n',
  'a\n'):
 'a\n'
 2 6 'a\na\n' -> ''
Diff 5 to 1 lines - preference for removing trailing lines:
showdiff(
  'a\na\na\na\na\n',
  'a\n'):
 'a\n'
 2 10 'a\na\na\na\n' -> ''