From 80203a7a024cd916755eb0c7a83b96ac44feab07 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Mon, 11 May 2020 00:18:23 +0200
Subject: [PATCH 1/2] fix(more) Return a proper error message when no argument
 is provided

Fix #1509
---
 src/uu/more/src/more.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/uu/more/src/more.rs b/src/uu/more/src/more.rs
index 44a61dc20..32350e58e 100644
--- a/src/uu/more/src/more.rs
+++ b/src/uu/more/src/more.rs
@@ -41,6 +41,12 @@ static VERSION: &str = env!("CARGO_PKG_VERSION");
 pub fn uumain(args: Vec<String>) -> i32 {
     let mut opts = Options::new();
 
+    // FixME: fail without panic for now; but `more` should work with no arguments (ie, for piped input)
+    if args.len() < 2 {
+        println!("{}: incorrect usage", args[0]);
+        return 1;
+    }
+
     opts.optflag("h", "help", "display this help and exit");
     opts.optflag("v", "version", "output version information and exit");
 

From 62901490e14fbcf6268e6fc1f451e5b39612dc11 Mon Sep 17 00:00:00 2001
From: Sylvestre Ledru <sylvestre@debian.org>
Date: Mon, 11 May 2020 10:44:12 +0200
Subject: [PATCH 2/2] test(more): add a test for more when called without arg

---
 tests/test_more.rs | 8 ++++++++
 tests/tests.rs     | 1 +
 2 files changed, 9 insertions(+)
 create mode 100644 tests/test_more.rs

diff --git a/tests/test_more.rs b/tests/test_more.rs
new file mode 100644
index 000000000..9d4835769
--- /dev/null
+++ b/tests/test_more.rs
@@ -0,0 +1,8 @@
+use common::util::*;
+
+#[test]
+fn test_more_no_arg() {
+    let (_, mut ucmd) = at_and_ucmd!();
+    let result = ucmd.run();
+    assert!(!result.success);
+}
diff --git a/tests/tests.rs b/tests/tests.rs
index ead3b68f9..a99c7cc26 100644
--- a/tests/tests.rs
+++ b/tests/tests.rs
@@ -75,6 +75,7 @@ generic! {
     "ls", test_ls;
     "mkdir", test_mkdir;
     "mktemp", test_mktemp;
+    "more", test_more;
     "mv", test_mv;
     "numfmt", test_numfmt;
     "nl", test_nl;