From edb1eb0a76b879216e05586aac41c2352a2b4e28 Mon Sep 17 00:00:00 2001
From: Ben Wiederhake <BenWiederhake.GitHub@gmx.de>
Date: Sat, 2 Mar 2024 03:05:46 +0100
Subject: [PATCH] cksum: allow repeated flags and arguments

---
 src/uu/cksum/src/cksum.rs   |  1 +
 tests/by-util/test_cksum.rs | 26 ++++++++++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/src/uu/cksum/src/cksum.rs b/src/uu/cksum/src/cksum.rs
index 36dfbbe1e..6cf04b797 100644
--- a/src/uu/cksum/src/cksum.rs
+++ b/src/uu/cksum/src/cksum.rs
@@ -365,6 +365,7 @@ pub fn uu_app() -> Command {
         .about(ABOUT)
         .override_usage(format_usage(USAGE))
         .infer_long_args(true)
+        .args_override_self(true)
         .arg(
             Arg::new(options::FILE)
                 .hide(true)
diff --git a/tests/by-util/test_cksum.rs b/tests/by-util/test_cksum.rs
index 464de9474..f07261b74 100644
--- a/tests/by-util/test_cksum.rs
+++ b/tests/by-util/test_cksum.rs
@@ -128,6 +128,18 @@ fn test_stdin_larger_than_128_bytes() {
     assert_eq!(bytes_cnt, 2058);
 }
 
+#[test]
+fn test_repeated_flags() {
+    new_ucmd!()
+        .arg("-a")
+        .arg("sha1")
+        .arg("--algo=sha256")
+        .arg("-a=md5")
+        .arg("lorem_ipsum.txt")
+        .succeeds()
+        .stdout_is_fixture("md5_single_file.expected");
+}
+
 #[test]
 fn test_algorithm_single_file() {
     for algo in ALGOS {
@@ -291,6 +303,20 @@ fn test_length_is_zero() {
         .stdout_is_fixture("length_is_zero.expected");
 }
 
+#[test]
+fn test_length_repeated() {
+    new_ucmd!()
+        .arg("--length=10")
+        .arg("--length=123456")
+        .arg("--length=0")
+        .arg("--algorithm=blake2b")
+        .arg("lorem_ipsum.txt")
+        .arg("alice_in_wonderland.txt")
+        .succeeds()
+        .no_stderr()
+        .stdout_is_fixture("length_is_zero.expected");
+}
+
 #[test]
 fn test_raw_single_file() {
     for algo in ALGOS {