commit https://github.com/vim/vim/commit/4db20ab091330e460f08651d6052afd0536c507a Author: Bram Moolenaar <Bram@vim.org> Date: Mon Feb 22 21:48:30 2016 +0100 patch 7.4.1391 Problem: Warning for uninitialzed variable. Solution: Set it to zero. (Christian Brabandt)

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