From bc0ddbd887c5b5eb1e6aec48f98de46964c36645 Mon Sep 17 00:00:00 2001
From: hahwul <hahwul@gmail.com>
Date: Sat, 9 Sep 2023 01:22:39 +0900
Subject: [PATCH] Add missing_option handler in cli

---
 src/noir.cr | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/noir.cr b/src/noir.cr
index 0d42dc55..4518440d 100644
--- a/src/noir.cr
+++ b/src/noir.cr
@@ -67,6 +67,10 @@ OptionParser.parse do |parser|
     STDERR.puts parser
     exit(1)
   end
+  parser.missing_option do |flag|
+    STDERR.puts "ERROR: #{flag} is missing an argument."
+    exit(1)
+  end
 end
 
 if noir_options[:base] == ""