diff --git a/pttodoest/src/main.rs b/pttodoest/src/main.rs
index 3897fdd..0e41f53 100755
--- a/pttodoest/src/main.rs
+++ b/pttodoest/src/main.rs
@@ -581,6 +581,17 @@ mod tests {
     pub fn file_content(p: &String) -> String {
         std::fs::read_to_string(p).unwrap()
     }
+
+    pub fn list_dir(d: &tempdir::TempDir) -> Vec<String> {
+        std::fs::read_dir(d)
+            .unwrap()
+            .filter(|x| x.is_ok())
+            .map(|x| x.unwrap())
+            .filter(|x| x.metadata().unwrap().is_file())
+            .map(|x| x.path().display().to_string())
+            .filter(|x| !x.contains("/."))
+            .collect()
+    }
 }
 
 mod edit {
@@ -603,7 +614,19 @@ mod edit {
     }
 
     fn edit_dir(d: &tempdir::TempDir) -> Result<(), String> {
-        panic!("not impl");
+        let mut cmd = std::process::Command::new("vim");
+        cmd.stdout(std::process::Stdio::inherit());
+        cmd.stdin(std::process::Stdio::inherit());
+        cmd.stderr(std::process::Stdio::inherit());
+        cmd.arg("-p");
+        for f in tests::list_dir(&d).iter() {
+            cmd.arg(Events::basename(f));
+        }
+        cmd.current_dir(d.path().display().to_string());
+        match cmd.output() {
+            Ok(_) => Ok(()),
+            Err(msg) => Err(format!("failed to vim: {}", msg)),
+        }
     }
 
     fn persist_edits(d: &tempdir::TempDir, files: &Files) -> Result<(), String> {