fix multiple files being added to index instead of one

src/app.rs

@@ -271,7 +271,20 @@ impl App {
             let mut index = repo.index().unwrap();
 
             let path = Path::new(self.status.wt_items[i].path.as_str());
-            if let Ok(_) = index.add_all(path, IndexAddOption::DISABLE_PATHSPEC_MATCH, None) {
+
+            let cb = &mut |p: &Path, _matched_spec: &[u8]| -> i32 {
+                if p == path {
+                    0
+                } else {
+                    1
+                }
+            };
+
+            if let Ok(_) = index.add_all(
+                path,
+                IndexAddOption::DISABLE_PATHSPEC_MATCH | IndexAddOption::CHECK_PATHSPEC,
+                Some(cb as &mut git2::IndexMatchedPath),
+            ) {
                 index.write().unwrap();
                 self.update();
             }

src/poll.rs

@@ -1,7 +1,7 @@
 use crossterm::event::{self, Event};
 use std::time::Duration;
 
-///
+/// as
 pub enum PollResult {
     Timeout,
     Event(Event),