use undo tree again, minor improvements
authorIan Kelling <iank@fsf.org>
Mon, 15 Jul 2019 00:51:38 +0000 (20:51 -0400)
committerIan Kelling <iank@fsf.org>
Mon, 15 Jul 2019 00:51:38 +0000 (20:51 -0400)

No differences found