pwd: add -h/-V short flags for help/version

This adds -h and -V as short alternatives for --help and --version.

GNU pwd only supports the long forms, but most other uutils accept both.
Having the short flags makes pwd consistent with the rest of the utilities
and more convenient to use.

Changes:
- Added .short('h') and .short('V') to help/version args
- Updated tests to verify both short and long forms work
- Localization already in place for both English and French

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

@@ -4,6 +4,8 @@ pwd-usage = pwd [OPTION]...
 # Help messages
 pwd-help-logical = use PWD from environment, even if it contains symlinks
 pwd-help-physical = avoid all symlinks
+pwd-help-text = Print help information
+pwd-version-text = Print version information
 
 # Error messages
 pwd-error-failed-to-get-current-directory = failed to get current directory

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

@@ -4,6 +4,8 @@ pwd-usage = pwd [OPTION]...
 # Messages d'aide
 pwd-help-logical = utiliser PWD de l'environnement, même s'il contient des liens symboliques
 pwd-help-physical = éviter tous les liens symboliques
+pwd-help-text = Afficher l'aide
+pwd-version-text = Afficher les informations de version
 
 # Messages d'erreur
 pwd-error-failed-to-get-current-directory = échec de l'obtention du répertoire actuel

src/uu/pwd/src/pwd.rs

@@ -145,6 +145,22 @@ pub fn uu_app() -> Command {
         .about(translate!("pwd-about"))
         .override_usage(format_usage(&translate!("pwd-usage")))
         .infer_long_args(true)
+        .disable_help_flag(true)
+        .disable_version_flag(true)
+        .arg(
+            Arg::new("help")
+                .short('h')
+                .long("help")
+                .help(translate!("pwd-help-text"))
+                .action(ArgAction::Help),
+        )
+        .arg(
+            Arg::new("version")
+                .short('V')
+                .long("version")
+                .help(translate!("pwd-version-text"))
+                .action(ArgAction::Version),
+        )
         .arg(
             Arg::new(OPT_LOGICAL)
                 .short('L')

tests/by-util/test_pwd.rs

@@ -15,6 +15,42 @@ fn test_invalid_arg() {
     new_ucmd!().arg("--definitely-invalid").fails_with_code(1);
 }
 
+#[test]
+fn test_help() {
+    new_ucmd!()
+        .arg("--help")
+        .succeeds()
+        .stdout_contains("Display the full filename of the current working directory")
+        .stdout_contains("--help")
+        .stdout_contains("--version");
+}
+
+#[test]
+fn test_version() {
+    new_ucmd!()
+        .arg("--version")
+        .succeeds()
+        .stdout_contains("uutils coreutils");
+}
+
+#[test]
+fn test_short_help() {
+    new_ucmd!()
+        .arg("-h")
+        .succeeds()
+        .stdout_contains("Display the full filename of the current working directory")
+        .stdout_contains("-h");
+}
+
+#[test]
+fn test_short_version() {
+    new_ucmd!()
+        .arg("-V")
+        .succeeds()
+        .stdout_contains("pwd")
+        .stdout_contains("uutils coreutils");
+}
+
 #[test]
 fn test_default() {
     let (at, mut ucmd) = at_and_ucmd!();