commit https://github.com/vim/vim/commit/2ff8b64679242e73248774a388d54931c9ce49bd Author: Bram Moolenaar <Bram@vim.org> Date: Tue May 24 10:46:45 2016 +0200 patch 7.4.1833 Problem: Cannot use an Ex command for 'keywordprg'. Solution: Accept an Ex command. (Nelo-Thara Wallus)

		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]'