Also, fold the difference part and the bottom part for the
identical screendump files.
closes: #16380
Co-authored-by: D. Ben Knoble <ben.knoble+github@gmail.com>
Signed-off-by: Aliaksei Budavei <0x000c70@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>