From 1241758ecbbf17f6465fbece34edda2a9e3763fc Mon Sep 17 00:00:00 2001
From: YoshiRulz <OSSYoshiRulz@gmail.com>
Date: Mon, 20 Jun 2022 10:02:20 +1000
Subject: [PATCH] Make `Disc.IsValidExtension` helper case-insensitive

---
 src/BizHawk.Emulation.DiscSystem/Disc.cs | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/src/BizHawk.Emulation.DiscSystem/Disc.cs b/src/BizHawk.Emulation.DiscSystem/Disc.cs
index 7db2fc7aa8..b5c8352ed6 100644
--- a/src/BizHawk.Emulation.DiscSystem/Disc.cs
+++ b/src/BizHawk.Emulation.DiscSystem/Disc.cs
@@ -128,10 +128,7 @@ namespace BizHawk.Emulation.DiscSystem
 		internal Disc()
 		{}
 
-		public static bool IsValidExtension(string extension) =>
-			extension == ".iso"
-			|| extension == ".cue"
-			|| extension == ".ccd"
-			|| extension == ".mds";
+		public static bool IsValidExtension(string extension)
+			=> extension.ToLowerInvariant() is ".ccd" or ".cue" or ".iso" or ".mds";
 	}
 }
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