commit https://github.com/vim/vim/commit/089af18d1fd0961ff504ee72db0156bbfe509cdf Author: Bram Moolenaar <Bram@vim.org> Date: Wed Oct 7 11:41:49 2015 +0200 patch 7.4.891 Problem: Indentation of array initializer is wrong. Solution: Avoid that calling find_start_rawstring() changes the position returned by find_start_comment(), add a test. (Hirohito Higashi)

" 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=