From e7b4f5344efaf996f7047f66d4c4b63253179caa Mon Sep 17 00:00:00 2001
From: Foil-hat-guy <dev@foilhatguy.casa>
Date: Mon, 5 May 2025 01:22:01 +0300
Subject: [PATCH] Test if Unwrap method is supported is added.

---
 error.go | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/error.go b/error.go
index 4127374..2ace8e1 100644
--- a/error.go
+++ b/error.go
@@ -4,8 +4,25 @@ import(
     "fmt"
 )
 
+type unwraperr interface {
+    Unwrap() error
+}
+
+type unwraperrs interface {
+    Unwrap() []error
+}
+
+func isUnwrapable(err error) bool {
+    _, ok1 := err.(unwraperr)
+    _, ok2 := err.(unwraperrs)
+    return ok1 || ok2
+}
+
 func errStack(err1 error, err2 error) error {
-    return fmt.Errorf("%w: %w", err1, err2)
+    if isUnwrapable(err2) {
+        return fmt.Errorf("%w: %w", err1, err2)
+    }
+    return fmt.Errorf("%w: %v", err1, err2)
 }
 
 func ERR_NOT_TTY() error {