Commit: runtime(nginx): Add NGINX directive for background cache updates

[Christian Brabandt]

runtime(nginx): Add NGINX directive for background cache updates

Commit: https://github.com/vim/vim/commit/80a7921a02bbba6e8ebfb19bcc456860d8c269ca
Author: S0AndS0 <stranger...@gmail.com>
Date: Sun Jun 8 16:15:00 2025 +0200

runtime(nginx): Add NGINX directive for background cache updates

Docs: https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_cache_background_update

closes: #17458

Signed-off-by: S0AndS0 <stranger...@gmail.com>
Signed-off-by: Chris Aumann <m...@chr4.org>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/runtime/syntax/nginx.vim b/runtime/syntax/nginx.vim
index d036c123d..ad8bdbf35 100644
--- a/runtime/syntax/nginx.vim
+++ b/runtime/syntax/nginx.vim
@@ -2,6 +2,7 @@
" Language: nginx.conf
" Maintainer: Chris Aumann <m...@chr4.org>
" Last Change: Nov 25, 2023
+" 2025 Jun 08 by Vim Project: improve syntax (#17458)

if exists("b:current_syntax")
finish
@@ -389,6 +390,7 @@ syn keyword ngxDirective proxy_buffering
syn keyword ngxDirective proxy_buffers
syn keyword ngxDirective proxy_busy_buffers_size
syn keyword ngxDirective proxy_cache
+syn keyword ngxDirective proxy_cache_background_update
syn keyword ngxDirective proxy_cache_bypass
syn keyword ngxDirective proxy_cache_convert_head
syn keyword ngxDirective proxy_cache_key