gh-121018: ensure ArgumentParser.parse_args with exit_on_error=False raises instead of exiting when given unrecognized arguments#121019

serhiy-storchaka merged 3 commits intopython:mainpython/cpython:mainfrom

blhsing:fix-argparse-exit-on-error-with-unrecognized-argsblhsing/cpython:fix-argparse-exit-on-error-with-unrecognized-argsCopy head branch name to clipboard