From fa302a1db101d2f2e64891c295bbf87812218e83 Mon Sep 17 00:00:00 2001
From: Halil Durak <halildrk@gmail.com>
Date: Wed, 22 Apr 2026 16:37:37 +0300
Subject: [PATCH] `cli`: report failure on `lightpanda serve serve` case

---
 src/cli.zig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/cli.zig b/src/cli.zig
index 1d6b9338..8506839a 100644
--- a/src/cli.zig
+++ b/src/cli.zig
@@ -574,6 +574,9 @@ pub fn Builder(comptime commands: anytype) type {
                         },
                         inline else => @compileError("not supported"),
                     }
+                } else {
+                    log.fatal(.app, "unknown argument", .{ .mode = command.name, .arg = option_name });
+                    return error.UnknownOption;
                 }
             }