Updte runtime files
diff --git a/runtime/syntax/json.vim b/runtime/syntax/json.vim
index e3210a9..3f49b0c 100644
--- a/runtime/syntax/json.vim
+++ b/runtime/syntax/json.vim
@@ -2,7 +2,7 @@
" Language: JSON
" Maintainer: vacancy
" Previous Maintainer: Eli Parra <eli@elzr.com>
-" Last Change: 2019 Jul 08
+" Last Change: 2019 Sep 17
" Version: 0.12
if !exists("main_syntax")
@@ -20,7 +20,7 @@
" Syntax: JSON Keywords
" Separated into a match and region because a region by itself is always greedy
syn match jsonKeywordMatch /"\([^"]\|\\\"\)\+"[[:blank:]\r\n]*\:/ contains=jsonKeyword
-if has('conceal')
+if has('conceal') && (!exists("g:vim_json_conceal") || g:vim_json_conceal==1)
syn region jsonKeyword matchgroup=jsonQuote start=/"/ end=/"\ze[[:blank:]\r\n]*\:/ concealends contained
else
syn region jsonKeyword matchgroup=jsonQuote start=/"/ end=/"\ze[[:blank:]\r\n]*\:/ contained
@@ -31,7 +31,7 @@
" Needs to come after keywords or else a json encoded string will break the
" syntax
syn match jsonStringMatch /"\([^"]\|\\\"\)\+"\ze[[:blank:]\r\n]*[,}\]]/ contains=jsonString
-if has('conceal')
+if has('conceal') && (!exists("g:vim_json_conceal") || g:vim_json_conceal==1)
syn region jsonString oneline matchgroup=jsonQuote start=/"/ skip=/\\\\\|\\"/ end=/"/ concealends contains=jsonEscape contained
else
syn region jsonString oneline matchgroup=jsonQuote start=/"/ skip=/\\\\\|\\"/ end=/"/ contains=jsonEscape contained