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] 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");