def _build_hint(parser: argparse.ArgumentParser, arg_action: argparse.Action) -> str:
"""Build tab completion hint for a given argument"""
# Check if hinting is disabled for this argument
suppress_hint = arg_action.get_suppress_tab_hint() # type: ignore[attr-defined]
if suppress_hint or arg_action.help == argparse.SUPPRESS:
return ''
else:
# Use the parser's help formatter to display just this action's help text
formatter = parser._get_formatter()
formatter.start_section("Hint")
formatter.add_argument(arg_action)
formatter.end_section()
return formatter.format_help()
