From ecb04b195f33fb8d2f39c6f4e2add1c00ae7fc74 Mon Sep 17 00:00:00 2001
From: iMaverick007 <alloydfernandes007@gmail.com>
Date: Thu, 26 Mar 2026 11:29:32 +0530
Subject: [PATCH] Improve unknown option error to display all invalid flags

---
 bin/express-cli.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/bin/express-cli.js b/bin/express-cli.js
index 380a447d..e5db0e9f 100755
--- a/bin/express-cli.js
+++ b/bin/express-cli.js
@@ -417,7 +417,14 @@ function main (options, done) {
   // top-level argument direction
   if (options['!'].length > 0) {
     usage()
-    error('unknown option `' + options['!'][0] + "'")
+
+    var unknownOptions = options['!']
+    .map(function (opt) {
+      return '`' + opt + '`'
+    })
+    .join(', ')
+
+    error('unknown option' + (options['!'].length > 1 ? 's ' : ' ') + unknownOptions)
     done(1)
   } else if (args.help) {
     usage()