commit https://github.com/vim/vim/commit/f1f60f859cdbb2638b3662ccf7b1d179865fe7dc Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jan 16 15:40:53 2016 +0100 patch 7.4.1102 Problem: Debugger has no stack backtrace support. Solution: Add "backtrace", "frame", "up" and "down" commands. (Alberto Fanjul, closes https://github.com/vim/vim/issues/433)

		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]'