Function verify_handler_args 

pub fn verify_handler_args(
    command: &Command,
    handler_name: &str,
    expected: &[ExpectedArg],
) -> Result<(), HandlerMismatchError>

Verify that a handler’s expected arguments match a clap Command’s definition.

Returns Ok(()) if all expectations are met, or Err(HandlerMismatchError) with detailed diagnostics if there are mismatches.

Arguments

• command - The clap Command to verify against
• handler_name - The handler function name (for error messages)
• expected - The arguments the handler expects (from __expected_args())

Example

let command = Command::new("list")
    .arg(Arg::new("verbose").long("verbose").action(ArgAction::SetTrue));

let expected = vec![ExpectedArg::flag("verbose", "verbose")];

verify_handler_args(&command, "list_handler", &expected)?;