From 5fd7249c69d2659f658ba998a59b7fb8bf1b1f9c Mon Sep 17 00:00:00 2001
From: Rene Zbinden <rene.zbinden@postfinance.ch>
Date: Tue, 13 Apr 2021 14:45:20 +0200
Subject: [PATCH] fix panic resolver's configuration file does not have read
 permission

---
 options.go | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/options.go b/options.go
index 259b6b1..b7c4364 100644
--- a/options.go
+++ b/options.go
@@ -329,9 +329,16 @@ func Configuration(loader ConfigurationLoader, paths ...string) Option {
 	return OptionFunc(func(k *Kong) error {
 		k.loader = loader
 		for _, path := range paths {
-			if _, err := os.Stat(ExpandPath(path)); os.IsNotExist(err) {
-				continue
+			f, err := os.Open(ExpandPath(path))
+			if err != nil {
+				if os.IsNotExist(err) || os.IsPermission(err) {
+					continue
+				}
+
+				return err
 			}
+			f.Close()
+
 			resolver, err := k.LoadConfig(path)
 			if err != nil {
 				return errors.Wrap(err, path)