From 40c73465165ac2b870f882461c7f6d6a671ddeb2 Mon Sep 17 00:00:00 2001
From: Frazer Smith <frazer.dev@outlook.com>
Date: Sat, 16 Sep 2023 07:50:38 +0100
Subject: [PATCH] refactor(vary): use word character class

---
 vary.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vary.js b/vary.js
index a10324d..4ff5e8c 100644
--- a/vary.js
+++ b/vary.js
@@ -20,7 +20,7 @@ const LRUCache = require('mnemonist/lru-cache')
  * @see https://datatracker.ietf.org/doc/html/rfc7230#section-3.2.6
  */
 
-const validFieldnameRE = /^[!#$%&'*+\-.^_`|~0-9A-Za-z]+$/
+const validFieldnameRE = /^[!#$%&'*+\-.^\w`|~]+$/u
 function validateFieldname (fieldname) {
   if (validFieldnameRE.test(fieldname) === false) {
     throw new TypeError('Fieldname contains invalid characters.')