From 9986cfe19d74feb0faf085394d5db65bd03c79a3 Mon Sep 17 00:00:00 2001
From: oech3 <79379754+oech3@users.noreply.github.com>
Date: Sat, 11 Jul 2026 16:50:07 +0900
Subject: [PATCH] head: set default of FILE to - by clap

---
 src/uu/head/src/cli.rs  |  1 +
 src/uu/head/src/head.rs | 11 ++++++-----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/uu/head/src/cli.rs b/src/uu/head/src/cli.rs
index 823d3869116..ed308ffbf91 100644
--- a/src/uu/head/src/cli.rs
+++ b/src/uu/head/src/cli.rs
@@ -79,6 +79,7 @@ pub fn uu_app() -> Command {
             Arg::new(options::FILES)
                 .action(ArgAction::Append)
                 .value_parser(clap::value_parser!(OsString))
+                .default_value("-")
                 .value_hint(clap::ValueHint::FilePath),
         )
 }
diff --git a/src/uu/head/src/head.rs b/src/uu/head/src/head.rs
index 955b3334dfd..24ff9e5c045 100644
--- a/src/uu/head/src/head.rs
+++ b/src/uu/head/src/head.rs
@@ -150,11 +150,12 @@ impl HeadOptions {
         options.presume_input_pipe = matches.get_flag(options::PRESUME_INPUT_PIPE);
 
         options.mode = Mode::from(matches)?;
-
-        options.files = match matches.get_many::<OsString>(options::FILES) {
-            Some(v) => v.cloned().collect(),
-            None => vec![OsString::from("-")],
-        };
+        // #[allow(clippy::unwrap_used, reason = "clap provides '-' by default")] <https://github.com/rust-lang/rust/issues/15701>
+        options.files = matches
+            .get_many::<OsString>(options::FILES)
+            .unwrap()
+            .cloned()
+            .collect();
 
         Ok(options)
     }