From 509c0f530e6084f5d50569dc0506f0b775b3f1ed Mon Sep 17 00:00:00 2001
From: Christer van der Meeren <christer@infotech.no>
Date: Thu, 21 Dec 2023 15:16:24 +0100
Subject: [PATCH] Improve error message for invalid enums with only one case

---
 src/Felicity/Errors.fs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Felicity/Errors.fs b/src/Felicity/Errors.fs
index 6bec39f..ae46d9f 100644
--- a/src/Felicity/Errors.fs
+++ b/src/Felicity/Errors.fs
@@ -323,7 +323,7 @@ let invalidParsedErrMsg (info: ParsedValueInfo) errMsg =
 let invalidEnum (info: ParsedValueInfo) allowedValues =
     let expectedStr =
         match allowedValues with
-        | [ x ] -> x
+        | [ x ] -> $"'%s{x}'"
         | xs -> "one of " + (xs |> List.map (sprintf "'%s'") |> String.concat ", ")
 
     match info with