commit https://github.com/vim/vim/commit/d6a8d48587b2ff43c343fa365898576cc1e235ea Author: Bram Moolenaar <Bram@vim.org> Date: Wed Feb 10 20:32:20 2016 +0100 patch 7.4.1298 Problem: When the channel test fails in an unexpected way the server keeps running. Solution: Use try/catch. (Ozaki Kiichi)

Tests for marks.


	textline A
	textline B
	textline C


CTRL-A CTRL-X:
AAA 123 123
123 XXXXXXX
XXX 123 123


Results:
Mark after delete-undo-redo-undo: [0, 15, 2, 0]