fix(ignore_errors): Allow help and version command

Author: sebastiantoh

clap_builder/src/builder/command.rs

@@ -3810,7 +3810,7 @@ impl Command {
         // do the real parsing
         let mut parser = Parser::new(self);
         if let Err(error) = parser.get_matches_with(&mut matcher, raw_args, args_cursor) {
-            if self.is_set(AppSettings::IgnoreErrors) {
+            if self.is_set(AppSettings::IgnoreErrors) && error.use_stderr() {
                 debug!("Command::_do_parse: ignoring error: {error}");
             } else {
                 return Err(error);

tests/builder/ignore_errors.rs

@@ -128,7 +128,6 @@ fn subcommand() {
 }
 
 #[test]
-#[should_panic(expected = "`Result::unwrap_err()` on an `Ok` value")]
 fn help_command() {
     static HELP: &str = "\
 Usage: test
@@ -143,7 +142,6 @@ Options:
 }
 
 #[test]
-#[should_panic(expected = "`Result::unwrap_err()` on an `Ok` value")]
 fn version_command() {
     let cmd = Command::new("test").ignore_errors(true).version("0.1");