install: support when a hyphen is passed (#5697)

* install: support when a hyphen is passed

Should fix: tests/install/strip-program.sh

Co-authored-by: Daniel Hofstetter <daniel.hofstetter@42dh.com>

src/uu/install/src/install.rs

@@ -749,7 +749,21 @@ fn copy_file(from: &Path, to: &Path) -> UResult<()> {
 /// Returns an empty Result or an error in case of failure.
 ///
 fn strip_file(to: &Path, b: &Behavior) -> UResult<()> {
-    match process::Command::new(&b.strip_program).arg(to).output() {
+    // Check if the filename starts with a hyphen and adjust the path
+    let to = if to
+        .file_name()
+        .unwrap_or_default()
+        .to_str()
+        .unwrap_or_default()
+        .starts_with('-')
+    {
+        let mut new_path = PathBuf::from(".");
+        new_path.push(to);
+        new_path
+    } else {
+        to.to_path_buf()
+    };
+    match process::Command::new(&b.strip_program).arg(&to).output() {
         Ok(o) => {
             if !o.status.success() {
                 // Follow GNU's behavior: if strip fails, removes the target

tests/by-util/test_install.rs

@@ -674,6 +674,34 @@ fn test_install_and_strip_with_program() {
     assert!(!stdout.contains(STRIP_SOURCE_FILE_SYMBOL));
 }
 
+#[cfg(all(unix, feature = "chmod"))]
+#[test]
+// FixME: Freebsd fails on 'No such file or directory'
+#[cfg(not(target_os = "freebsd"))]
+fn test_install_and_strip_with_program_hyphen() {
+    let scene = TestScenario::new(util_name!());
+
+    let at = &scene.fixtures;
+    let content = r#"#!/bin/sh
+    echo $1 &> /tmp/a.log
+    printf -- '%s\n' "$1" | grep '^[^-]'
+    "#;
+    at.write("no-hyphen", content);
+    scene.ccmd("chmod").arg("+x").arg("no-hyphen").succeeds();
+
+    at.touch("src");
+    scene
+        .ucmd()
+        .arg("-s")
+        .arg("--strip-program")
+        .arg("./no-hyphen")
+        .arg("--")
+        .arg("src")
+        .arg("-dest")
+        .succeeds()
+        .no_stderr();
+}
+
 #[test]
 #[cfg(not(windows))]
 fn test_install_and_strip_with_invalid_program() {