patch 8.2.3936: no proper test for maintaining change mark in diff mode Commit: https://github.com/vim/vim/commit/ccc1644f95e7833c23fa0d440e42293c1622fdcb Author: Sean Dewar <seandewar@users.noreply.github.com> Date: Wed Dec 29 16:44:48 2021 +0000 patch 8.2.3936: no proper test for maintaining change mark in diff mode Problem: No proper test for maintaining change mark in diff mode. Solution: Run the test with internal and external diff. (Sean Dewar, closes #9424)

|1+0&#ffffff0>w|o|r|d| @69
|s|o|m|e| |m|o|r|e| @65
|s|e|v|e|r|a|l| |w|o|r|d|s| @61
|2| @73
|3| @73
|4| @73
|5| @73
|6| @73
|7| @73
@57|1|,|2| @10|T|o|p|