dirname: Add support for multiple paths

Author: https://github.com/tcl3
Commit: e259c3b38a
Pull-request: https://github.com/SerenityOS/serenity/pull/19564
Reviewed-by: https://github.com/gmta ✅

Userland/Utilities/dirname.cpp

@@ -12,13 +12,15 @@
 ErrorOr<int> serenity_main(Main::Arguments arguments)
 {
     bool null_terminated = false;
-    DeprecatedString path;
+    Vector<DeprecatedString> paths;
     Core::ArgsParser args_parser;
     args_parser.add_option(null_terminated, "End each output line with \\0, rather than \\n", "zero", 'z');
-    args_parser.add_positional_argument(path, "Path", "path");
+    args_parser.add_positional_argument(paths, "Path", "path");
     args_parser.parse(arguments);
 
     auto const delimiter = null_terminated ? '\0' : '\n';
-    out("{}{}", LexicalPath::dirname(path), delimiter);
+    for (auto const& path : paths)
+        out("{}{}", LexicalPath::dirname(path), delimiter);
+
     return 0;
 }