docs: duplicated arguments

Author: KSXGitHub

src/app.rs

@@ -38,7 +38,8 @@ impl App {
     }
 
     /// Run the application.
-    pub fn run(self) -> Result<(), RuntimeError> {
+    #[expect(unused_mut)] // TODO: remove this
+    pub fn run(mut self) -> Result<(), RuntimeError> {
         // DYNAMIC DISPATCH POLICY:
         //
         // Errors rarely occur, therefore, using dynamic dispatch to report errors have an acceptable
@@ -132,6 +133,12 @@ impl App {
                 .unwrap_or_else(|_| eprintln!("warning: Failed to set thread limit to {threads}"));
         }
 
+        if cfg!(unix) && self.args.deduplicate_hardlinks && self.args.files.len() > 1 {
+            // Hardlinks deduplication doesn't work properly if there are more than 1 paths pointing to
+            // the same tree or if a path points to a subtree of another path. Therefore, we must find
+            // and remove such duplications before they cause problem.
+        }
+
         let report_error = if self.args.silent_errors {
             ErrorReport::SILENT
         } else {