Function _split_opt

src/click/parser.py:111–117

(opt: str)

def _split_opt(opt: str) -> tuple[str, str]:
    first = opt[:1]
    if first.isalnum():
        return "", opt
    if opt[1:2] == first:
        return opt[:2], opt[2:]
    return first, opt[1:]


def _normalize_opt(opt: str, ctx: Context | None) -> str: