patch 8.2.1946: sort() with NULL string not tested Commit: https://github.com/vim/vim/commit/35efa22ff2b98126363098db9304796b5624f97f Author: Bram Moolenaar <Bram@vim.org> Date: Tue Nov 3 18:51:54 2020 +0100 patch 8.2.1946: sort() with NULL string not tested Problem: sort() with NULL string not tested. Solution: Add a test. use v:collate. (Dominique Pell?, closes https://github.com/vim/vim/issues/7247)

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