From 05f96fc4346abc699fa61b22e66d1e502ef918d0 Mon Sep 17 00:00:00 2001
From: Jachin <ygcaicn@gmail.com>
Date: Mon, 1 Nov 2021 11:28:57 +0800
Subject: [PATCH] Fix load single config auto format. (#1354)

---
 config.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/config.go b/config.go
index ad7e5ec48..d912c9bfd 100644
--- a/config.go
+++ b/config.go
@@ -135,8 +135,8 @@ func LoadConfig(formatName string, input interface{}) (*Config, error) {
 // * string of a single filename/url(s) to open to read
 // * io.Reader that reads a config content (the original way)
 func loadSingleConfigAutoFormat(input interface{}) (*Config, error) {
-	if file, ok := input.(string); ok {
-		extension := getExtension(file)
+	if file, ok := input.(cmdarg.Arg); ok {
+		extension := getExtension(file.String())
 		if extension != "" {
 			lowerName := strings.ToLower(extension)
 			if f, found := configLoaderByExt[lowerName]; found {