commit https://github.com/vim/vim/commit/4077b33a8370afb3d5ae74e556a0119cf51fe294 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Mar 20 18:15:21 2016 +0100 patch 7.4.1620 Problem: Emoji characters are not considered as a kind of word character. Solution: Give emoji characters a word class number. (Yasuhiro Matsumoto)

		O sodales, ludite, vos qui attamen consulite per voster honur.
Tua pulchra facies me fay planszer milies

This line.  Should be joined with the next line and with this line

Results:
First test: Start/End '[0, 16, 1, 0]/[0, 17, 1, 0]'
Second test: Start/End '[0, 19, 11, 0]/[0, 19, 67, 0]'