flags rewrite : just well defined structs and a clear switch block

sort/sort.go

@@ -1,23 +1,9 @@
 package sort
 
 import (
-	"flag"
 	"fmt"
-
-	"github.com/brtholomy/um/go/flags"
-)
-
-const (
-	key flags.Flag = "key"
 )
 
 func Sort(args []string) {
-	sortFlags := flag.NewFlagSet("sort", flag.ExitOnError)
-	sortKey := sortFlags.String(string(key), "", "filename of ordered list to use as key")
-
-	sortFlags.Parse(args)
-	fmt.Println("subcmd sort")
-	fmt.Printf("key: %#v\n", *sortKey)
-	fmt.Printf("args: %#v\n", sortFlags.Args())
-	sortFlags.Usage()
+	fmt.Printf("args: %#v\n", args)
 }