dir: add "about" and "usage" instead of being "ls" (#10369)

* fix: add "about" and "usage" for dir and vdir

* fix import

* revert changes on vdir. focus on dir first

* revert import on vdir

* add test

* Update en-US.ftl

* fix fmt

* revert vdir

* precommit

src/uu/dir/src/dir.rs

@@ -7,8 +7,7 @@ use clap::Command;
 use std::ffi::OsString;
 use std::path::Path;
 use uu_ls::{Config, Format, options};
-use uucore::error::UResult;
-use uucore::quoting_style::QuotingStyle;
+use uucore::{error::UResult, format_usage, quoting_style::QuotingStyle, translate};
 
 #[uucore::main]
 pub fn uumain(args: impl uucore::Args) -> UResult<()> {
@@ -63,4 +62,6 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
 // an uu_app function, so we return the `ls` app.
 pub fn uu_app() -> Command {
     uu_ls::uu_app()
+        .override_usage(format_usage(&translate!("dir-usage")))
+        .about(translate!("dir-about"))
 }

src/uu/ls/locales/en-US.ftl

@@ -1,6 +1,9 @@
 ls-about = List directory contents.
   Ignore files and directories starting with a '.' by default
+dir-about = List directory contents.
+  Ignore files and directories starting with a '.' by default
 ls-usage = ls [OPTION]... [FILE]...
+dir-usage = dir [OPTION]... [FILE]...
 ls-after-help = The TIME_STYLE argument can be full-iso, long-iso, iso, locale or +FORMAT. FORMAT is interpreted like in date. Also the TIME_STYLE environment variable sets the default style to use.
 
 # Error messages

src/uu/ls/locales/fr-FR.ftl

@@ -1,6 +1,9 @@
 ls-about = Lister le contenu des répertoires.
   Ignorer les fichiers et répertoires commençant par un '.' par défaut
+dir-about = Lister le contenu des répertoires.
+  Ignorer les fichiers et répertoires commençant par un '.' par défaut
 ls-usage = ls [OPTION]... [FICHIER]...
+dir-usage = dir [OPTION]... [FICHIER]...
 ls-after-help = L'argument TIME_STYLE peut être full-iso, long-iso, iso, locale ou +FORMAT. FORMAT est interprété comme dans date. De plus, la variable d'environnement TIME_STYLE définit le style par défaut à utiliser.
 
 # Messages d'erreur

tests/by-util/test_dir.rs

@@ -56,3 +56,21 @@ fn test_long_output() {
 fn test_invalid_option_exit_code() {
     new_ucmd!().arg("-/").fails().code_is(2);
 }
+
+#[test]
+fn test_help_shows_dir_not_ls() {
+    let result = new_ucmd!().arg("--help").succeeds();
+    let output = result.stdout_str();
+
+    // Verify help text contains "dir" in the usage line
+    assert!(
+        output.contains("dir [OPTION]"),
+        "Help should show 'dir [OPTION]'"
+    );
+
+    // Verify help text does not incorrectly show "ls"
+    assert!(
+        !output.contains("ls [OPTION]"),
+        "Help should not show 'ls [OPTION]'"
+    );
+}