/usr/share/nvim/runtime/ftplugin/json.vim is in neovim-runtime 0.2.2-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | " Vim filetype plugin
" Language: JSON
" Maintainer: David Barnett <daviebdawg+vim@gmail.com>
" Last Change: 2014 Jul 16
if exists('b:did_ftplugin')
finish
endif
let b:did_ftplugin = 1
let b:undo_ftplugin = 'setlocal formatoptions< comments< commentstring<'
setlocal formatoptions-=t
" JSON has no comments.
setlocal comments=
setlocal commentstring=
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