Make --auth.method parameter optional Fixes: #715

cmd/config.go

@@ -44,8 +44,11 @@ func addConfigFlags(flags *pflag.FlagSet) {
 	flags.Bool("branding.disableExternal", false, "disable external links such as GitHub links")
 }
 
-func getAuthentication(flags *pflag.FlagSet) (settings.AuthMethod, auth.Auther) {
+func getAuthentication(flags *pflag.FlagSet, defaults ...*settings.Settings) (settings.AuthMethod, auth.Auther) {
 	method := settings.AuthMethod(mustGetString(flags, "auth.method"))
+	if len(defaults) > 0 {
+		method = defaults[0].AuthMethod
+	}
 
 	var auther auth.Auther
 	if method == auth.MethodProxyAuth {

cmd/config_set.go

@@ -71,6 +71,10 @@ you want to change. Other options will remain unchanged.`,
 		} else {
 			auther, err = d.store.Auth.Get(set.AuthMethod)
 			checkErr(err)
+			// check if there are new flags for existing auth method
+			set.AuthMethod, auther = getAuthentication(flags, set)
+			err = d.store.Auth.Save(auther)
+			checkErr(err)
 		}
 
 		err = d.store.Settings.Save(set)