allow non-western characters in usernames

Author: squell

src/sudoers/test/mod.rs

@@ -364,6 +364,11 @@ fn invalid_username() {
     parse_eval::<ast::Sudo>("User_Alias FOO = $dollar");
 }
 
+#[test]
+fn inclusive_username() {
+    parse_eval::<ast::UserSpecifier>("şirin");
+}
+
 #[test]
 fn directive_test() {
     let y = parse_eval::<Spec<UserSpecifier>>;

src/sudoers/tokens.rs

@@ -24,7 +24,7 @@ impl Token for Username {
     }
 
     fn accept(c: char) -> bool {
-        c.is_ascii_alphanumeric() || ".-_@$".contains(c)
+        c.is_alphanumeric() || ".-_@$".contains(c)
     }
 
     fn accept_1st(c: char) -> bool {