commit https://github.com/vim/vim/commit/796aa9c804f09276bd3cc45123f4a191a001dec2 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Aug 2 21:41:28 2016 +0200 patch 7.4.2144 Problem: On MS-Windows quickix does not handle a line with 1023 bytes ending in CR-LF properly. Solution: Don't consider CR a line break. (Ken Takata)

Tests for file with some lines ending in CTRL-M, some not

STARTTEST
:set ta tx
:e!
:$-3,$w! test.out
:qa!
ENDTEST

this lines ends in a
this one doesn't
this one does
and the last one doesn't