Fix ls panics when a file or directory not exists (#6148)

* Fix ls panics when a file or directory not exists

Fixes #6146

Signed-off-by: nibon7 <nibon7@163.com>

* add test

Signed-off-by: nibon7 <nibon7@163.com>

crates/nu-command/src/filesystem/ls.rs

@@ -147,9 +147,13 @@ impl Command for Ls {
                         Some(glob_options)
                     };
                     let (prefix, paths) =
-                        nu_engine::glob_from(&glob_path, &cwd, call_span, glob_options)
+                        match nu_engine::glob_from(&glob_path, &cwd, call_span, glob_options) {
-                            .expect("glob failure");
+                            Ok((prefix, paths)) => (prefix, paths),
-
+                            Err(e) => {
+                                shell_errors.push(e);
+                                return Vec::from([Value::nothing(call_span)]).into_iter();
+                            }
+                        };
                     let mut paths_peek = paths.peekable();
                     if paths_peek.peek().is_none() {
                         shell_errors.push(ShellError::GenericError(

crates/nu-command/tests/commands/ls.rs

@@ -527,3 +527,11 @@ fn can_list_system_folder() {
     ));
     assert_eq!(ls_with_filter.err, "");
 }
+
+#[test]
+fn list_a_directory_not_exists() {
+    Playground::setup("ls_test_directory_not_exists", |dirs, _sandbox| {
+        let actual = nu!(cwd: dirs.test(), "ls a_directory_not_exists");
+        assert!(actual.err.contains("directory not found"));
+    })
+}