command : match plus lisible dans l'implémentation de Builtin

src/command/mod.rs

@@ -24,9 +24,14 @@ impl Builtin {
         let mut args = argv.clone();
         let program = args.remove(0);
 
-        if program == "cd" {
+        let function = match program.as_str() {
+            "cd" => Some(builtins::cd),
+            _ => None,
+        };
+
+        if function.is_some() {
             Ok(Self {
-                function: builtins::cd,
+                function: function.unwrap(),
                 args,
             })
         } else {