patch 9.0.1249: cannot export an abstract class Commit: https://github.com/vim/vim/commit/657aea7fc47fb919ce76fad64ba0ec55a1af80f1 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Jan 27 13:16:19 2023 +0000 patch 9.0.1249: cannot export an abstract class Problem: Cannot export an abstract class. (Ernie Rael) Solution: Add the EX_EXPORT flag to :abstract. (closes https://github.com/vim/vim/issues/11884)

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