From c644c798bfcdc1b0bbb1f0ca59e2e2664ff3fdd0 Mon Sep 17 00:00:00 2001
From: Jb Landry <jb@jblandry.info>
Date: Wed, 4 Nov 2020 19:28:35 -0500
Subject: [PATCH] Switch email pattern to practical implementation of RFC 5322

---
 src/kafe/string-validate.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/kafe/string-validate.js b/src/kafe/string-validate.js
index 4bb7bc3..5c527f9 100644
--- a/src/kafe/string-validate.js
+++ b/src/kafe/string-validate.js
@@ -46,7 +46,10 @@
 	validate.isEmail = function(str) {
 		str = str.replace(/^\s*|\s*$/g, '');
 		str = str.replace(/^\t*|\t*$/g, '');
-		return (/^\w+([\.\+-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(str));
+
+		// Practical implementation of RFC 5322
+		// https://www.regular-expressions.info/email.html
+		return (/^[a-z0-9!#$%&'*+/=?^_‘{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_‘{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?$/.test(str));
 	};