From 335b68282c5b6f4e4a7f6c529bde52d15a711ec5 Mon Sep 17 00:00:00 2001
From: onevcat <onevcat@gmail.com>
Date: Sun, 28 Jun 2026 11:54:17 +0900
Subject: [PATCH] Prevent fullscreen close-window black screen

---
 supacode/App/WindowTabbingDisabler.swift       |  8 +++++++-
 supacodeTests/WindowTabbingDisablerTests.swift | 14 ++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 supacodeTests/WindowTabbingDisablerTests.swift

diff --git a/supacode/App/WindowTabbingDisabler.swift b/supacode/App/WindowTabbingDisabler.swift
index 9c70b35b..17e8ac1d 100644
--- a/supacode/App/WindowTabbingDisabler.swift
+++ b/supacode/App/WindowTabbingDisabler.swift
@@ -31,7 +31,13 @@ final class WindowTabbingView: NSView, NSWindowDelegate {
   }
 
   func windowShouldClose(_ sender: NSWindow) -> Bool {
-    sender.orderOut(nil)
+    if Self.shouldOrderOutOnClose(styleMask: sender.styleMask) {
+      sender.orderOut(nil)
+    }
     return false
   }
+
+  static func shouldOrderOutOnClose(styleMask: NSWindow.StyleMask) -> Bool {
+    !styleMask.contains(.fullScreen)
+  }
 }
diff --git a/supacodeTests/WindowTabbingDisablerTests.swift b/supacodeTests/WindowTabbingDisablerTests.swift
new file mode 100644
index 00000000..e1165da0
--- /dev/null
+++ b/supacodeTests/WindowTabbingDisablerTests.swift
@@ -0,0 +1,14 @@
+import AppKit
+import Testing
+
+@testable import supacode
+
+struct WindowTabbingDisablerTests {
+  @Test func shouldNotOrderOutFullscreenWindowOnClose() {
+    #expect(WindowTabbingView.shouldOrderOutOnClose(styleMask: [.titled, .fullScreen]) == false)
+  }
+
+  @Test func shouldOrderOutNonFullscreenWindowOnClose() {
+    #expect(WindowTabbingView.shouldOrderOutOnClose(styleMask: [.titled, .closable]) == true)
+  }
+}
-- 
2.51.2