Add UseBlacklist to runtime/syntax/sshdconfig.vim

[samy-mahmoudi]

Add UseBlacklist to the sshdconfigKeyword syntax
group since support for blacklistd has been added
to OpenSSH since FreeBSD 11.1 and NetBSD 7.

https://www.freebsd.org/releases/11.1R/relnotes.html
http://www.netbsd.org/releases/formal-7/NetBSD-7.0.html

Problem: UseBlacklist is not highlighted when editing sshd_config.
Solution: Add UseBlacklist to sshdconfig.vim. (Samy Mahmoudi)

Please note that this pull request is identical to: vim/vim#3258

[justinmk]

Thanks for the help!

We don't want to fork the Vim runtime plugins in most cases (especially syntax plugins), unless there's a very good reason. Because if Vim changes something in the same file, it takes time to figure out the differences.

Please send this change to the maintainer, listed at the top of the file.

[samy-mahmoudi]

Hello Justin,

Thank you for your responsiveness. I was kind of expecting such an answer because I noticed vim-patch:8.0.* within the commits of neovim/neovim.

I contacted the proper maintainer since then.