commit https://github.com/vim/vim/commit/2c15f6aa8fd057721e35d03523577b41cf7aaad5 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jan 2 15:00:30 2016 +0100 patch 7.4.1023 Problem: The distribution files for MS-Windows use CR-LF, which is inconsistent with what one gets from github. Solution: Use LF in the distribution files.

" VIM syntax file
" Language:	groff
" Maintainer:	Alejandro López-Valencia <dradul@yahoo.com>
" URL:		http://dradul.tripod.com/vim
" Last Change:	2003-05-08-12:41:13 GMT-5.

" This uses the nroff.vim syntax file.
let b:main_syntax = "nroff"
let b:nroff_is_groff = 1
runtime! syntax/nroff.vim