commit https://github.com/vim/vim/commit/0a38dd29d6f65aa601162542a5ab0ba7f308fc8e Author: Bram Moolenaar <Bram@vim.org> Date: Tue Aug 25 16:49:01 2015 +0200 patch 7.4.836 Problem: Accessing unitinialized memory. Solution: Add missing calls to init_tv(). (Dominique Pelle)

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