Add note about subcommands to `help_requested` method
@@ -457,7 +457,7 @@ pub trait Options: Sized {
fn parse<S: AsRef<str>>(parser: &mut Parser<S>) -> Result<Self, Error>;
/// Returns whether the user supplied a "help" option to request
- /// usage information about the program.
+ /// usage information about the program or any contained subcommands.
///
/// The default implementation returns `false`.
fn help_requested(&self) -> bool { false }
