From d1c60d9e69e7499dc680a8552b4ea75c2fd2e91b Mon Sep 17 00:00:00 2001
From: Pedro Silva <pedromss@users.noreply.github.com>
Date: Wed, 6 Nov 2019 13:54:13 +0000
Subject: [PATCH] Support config files with no extensions (#722)

* Support config files with no extensions

* Update README informing config files without extension are supported
---
 README.md     |  2 ++
 viper.go      |  4 ++++
 viper_test.go | 16 ++++++++++++++++
 3 files changed, 22 insertions(+)

diff --git a/README.md b/README.md
index 171f51c..fe292d0 100644
--- a/README.md
+++ b/README.md
@@ -121,6 +121,8 @@ if err := viper.ReadInConfig(); err != nil {
 // Config file found and successfully parsed
 ```
 
+*NOTE:* You can also have a file without an extension and specify the format programmaticaly. For those configuration files that lie in the home of the user without any extension like `.bashrc`
+
 ### Writing Config Files
 
 Reading from config files is useful, but at times you want to store all modifications made at run time.
diff --git a/viper.go b/viper.go
index e9010bc..c64094a 100644
--- a/viper.go
+++ b/viper.go
@@ -1881,6 +1881,10 @@ func (v *Viper) searchInPath(in string) (filename string) {
 		}
 	}
 
+	if b, _ := exists(v.fs, filepath.Join(in, v.configName)); b {
+		return filepath.Join(in, v.configName)
+	}
+
 	return ""
 }
 
diff --git a/viper_test.go b/viper_test.go
index f8364a0..8dcfd1a 100644
--- a/viper_test.go
+++ b/viper_test.go
@@ -278,6 +278,22 @@ func TestBasics(t *testing.T) {
 	assert.NoError(t, err)
 }
 
+func TestSearchInPath(t *testing.T) {
+	filename := ".dotfilenoext"
+	path := "/tmp"
+	file := filepath.Join(path, filename)
+	SetConfigName(filename)
+	AddConfigPath(path)
+	_, createErr := v.fs.Create(file)
+	defer func() {
+		_ = v.fs.Remove(file)
+	}()
+	assert.NoError(t, createErr)
+	filename, err := v.getConfigFile()
+	assert.Equal(t, file, filename)
+	assert.NoError(t, err)
+}
+
 func TestDefault(t *testing.T) {
 	SetDefault("age", 45)
 	assert.Equal(t, 45, Get("age"))