Function normalize_cmd

pre_commit/parse_shebang.py:65–85

Fixes for the following issues on windows - https://bugs.python.org/issue8557 - windows does not parse shebangs This function also makes deep-path shebangs work just fine

(
        cmd: tuple[str, ...],
        *,
        env: Mapping[str, str] | None = None,
)

def normalize_cmd(
        cmd: tuple[str, ...],
        *,
        env: Mapping[str, str] | None = None,
) -> tuple[str, ...]:
    """Fixes for the following issues on windows
    - https://bugs.python.org/issue8557
    - windows does not parse shebangs

    This function also makes deep-path shebangs work just fine
    """
    # Use PATH to determine the executable
    exe = normexe(cmd[0], env=env)

    # Figure out the shebang from the resulting command
    cmd = parse_filename(exe) + (exe,) + cmd[1:]

    # This could have given us back another bare executable
    exe = normexe(cmd[0], env=env)

    return (exe,) + cmd[1:]