commit https://github.com/vim/vim/commit/3848e00e0177abdb31bc600234967863ec487233 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Mar 19 18:42:29 2016 +0100 patch 7.4.1604 Problem: Although emoji characters are ambiguous width, best is to treat them as full width. Solution: Update the Unicode character tables. Add the 'emoji' options. (Yasuhiro Matsumoto)

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]