From b3a4a04d321291cf35bea2353b3f887fe24272f2 Mon Sep 17 00:00:00 2001
From: Dan Fabulich <dan@fabulich.com>
Date: Sat, 25 Apr 2026 15:44:19 -0700
Subject: [PATCH] Make `NSError.description` incorporate `userInfo`

This matches Swift Foundation.
---
 Sources/SkipFoundation/NSError.swift | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/Sources/SkipFoundation/NSError.swift b/Sources/SkipFoundation/NSError.swift
index a5bcc6d..08467ca 100644
--- a/Sources/SkipFoundation/NSError.swift
+++ b/Sources/SkipFoundation/NSError.swift
@@ -35,7 +35,7 @@ public let NSStringEncodingErrorKey: String = "NSStringEncodingErrorKey"
 public let NSURLErrorKey: String = "NSURL"
 public let NSFilePathErrorKey: String = "NSFilePathErrorKey"
 
-open class NSError : Error, CustomStringConvertible {
+open class NSError : Error, CustomStringConvertible, CustomDebugStringConvertible {
     // ErrorType forbids this being internal
     open var _domain: String
     open var _code: Int
@@ -120,7 +120,22 @@ open class NSError : Error, CustomStringConvertible {
     }
 
     open var description: String {
-        return "Error Domain=\(domain) Code=\(code) \"\(localizedFailureReason ?? "(null)")\""
+        let message: String
+        if let localizedDescription = userInfo[NSLocalizedDescriptionKey] as? String {
+            message = localizedDescription
+        } else {
+            message = localizedFailureReason ?? "(null)"
+        }
+        let base = "Error Domain=\(domain) Code=\(code) \"\(message)\""
+        if userInfo.isEmpty {
+            return base
+        } else {
+            return "\(base) UserInfo=\(userInfo)"
+        }
+    }
+
+    open var debugDescription: String {
+        return description
     }
 }