Standardized: use recommend extension & forward compatibility before 1.0

README.md

@@ -64,7 +64,7 @@ If you have Docker installed, you can run clash directly using `docker-compose`.
 
 The default configuration directory is `$HOME/.config/clash`
 
-The name of the configuration file is `config.yml`
+The name of the configuration file is `config.yaml`
 
 If you want to use another directory, you can use `-d` to control the configuration directory
 

config/config.go

@@ -87,11 +87,26 @@ type rawConfig struct {
 	Rule         []string                 `yaml:"Rule"`
 }
 
+// forward compatibility before 1.0
+func readRawConfig(path string) ([]byte, error) {
+	data, err := ioutil.ReadFile(path)
+	if err == nil && len(data) != 0 {
+		return data, nil
+	}
+
+	if filepath.Ext(path) != ".yaml" {
+		return nil, err
+	}
+
+	path = path[:len(path)-5] + ".yml"
+	return ioutil.ReadFile(path)
+}
+
 func readConfig(path string) (*rawConfig, error) {
 	if _, err := os.Stat(path); os.IsNotExist(err) {
 		return nil, err
 	}
-	data, err := ioutil.ReadFile(path)
+	data, err := readRawConfig(path)
 	if err != nil {
 		return nil, err
 	}

config/initial.go

@@ -63,7 +63,7 @@ func Init(dir string) error {
 		}
 	}
 
-	// initial config.yml
+	// initial config.yaml
 	if _, err := os.Stat(C.Path.Config()); os.IsNotExist(err) {
 		log.Info("Can't find config, create an empty file")
 		os.OpenFile(C.Path.Config(), os.O_CREATE|os.O_WRONLY, 0644)

constant/path.go

@@ -42,7 +42,7 @@ func (p *path) HomeDir() string {
 }
 
 func (p *path) Config() string {
-	return P.Join(p.homedir, "config.yml")
+	return P.Join(p.homedir, "config.yaml")
 }
 
 func (p *path) MMDB() string {