From a168138bfb6e83327e5be93bb955db398eb40958 Mon Sep 17 00:00:00 2001
From: Lawrence Chen <54008264+lawrencecchen@users.noreply.github.com>
Date: Fri, 28 Aug 2026 05:28:42 -0700
Subject: [PATCH 1/3] test(chatmux-relay): reject empty option values

---
 cmux-tui/crates/chatmux-relay/src/cli.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cmux-tui/crates/chatmux-relay/src/cli.rs b/cmux-tui/crates/chatmux-relay/src/cli.rs
index 33184ecdedf8..63aac0f8e7e4 100644
--- a/cmux-tui/crates/chatmux-relay/src/cli.rs
+++ b/cmux-tui/crates/chatmux-relay/src/cli.rs
@@ -234,6 +234,7 @@ mod tests {
             &["--backend", "--code"][..],
             &["--backend", "--"][..],
             &["--allow-root", "--status"][..],
+            &["--config", ""][..],
         ] {
             let error = parse(args).expect_err("missing value refused");
             assert!(error.message.contains("requires a value"), "{args:?}: {}", error.message);

From 73f3fdca56fc6a58a720b14fca9be1e325766c79 Mon Sep 17 00:00:00 2001
From: Lawrence Chen <54008264+lawrencecchen@users.noreply.github.com>
Date: Fri, 28 Aug 2026 05:28:58 -0700
Subject: [PATCH 2/3] fix(chatmux-relay): reject empty option values

---
 cmux-tui/crates/chatmux-relay/src/cli.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/cmux-tui/crates/chatmux-relay/src/cli.rs b/cmux-tui/crates/chatmux-relay/src/cli.rs
index 63aac0f8e7e4..5c7dc1cbf057 100644
--- a/cmux-tui/crates/chatmux-relay/src/cli.rs
+++ b/cmux-tui/crates/chatmux-relay/src/cli.rs
@@ -84,7 +84,9 @@ where
 
         if is_value_flag(argument) {
             let value = args.get(index + 1).map(String::as_str);
-            let usable = value.is_some_and(|value| value != "--" && !value.starts_with('-'));
+            let usable = value.is_some_and(|value| {
+                !value.is_empty() && value != "--" && !value.starts_with('-')
+            });
             if !usable {
                 return Err(missing_value(argument));
             }

From ba9a5581cf8a57dae070531ac27a151b7b780c38 Mon Sep 17 00:00:00 2001
From: Lawrence Chen <54008264+lawrencecchen@users.noreply.github.com>
Date: Fri, 28 Aug 2026 05:38:05 -0700
Subject: [PATCH 3/3] style(chatmux-relay): format CLI parser

---
 cmux-tui/crates/chatmux-relay/src/cli.rs | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/cmux-tui/crates/chatmux-relay/src/cli.rs b/cmux-tui/crates/chatmux-relay/src/cli.rs
index 5c7dc1cbf057..97ca1364dc2f 100644
--- a/cmux-tui/crates/chatmux-relay/src/cli.rs
+++ b/cmux-tui/crates/chatmux-relay/src/cli.rs
@@ -84,9 +84,8 @@ where
 
         if is_value_flag(argument) {
             let value = args.get(index + 1).map(String::as_str);
-            let usable = value.is_some_and(|value| {
-                !value.is_empty() && value != "--" && !value.starts_with('-')
-            });
+            let usable = value
+                .is_some_and(|value| !value.is_empty() && value != "--" && !value.starts_with('-'));
             if !usable {
                 return Err(missing_value(argument));
             }