def unbust(directory: str) -> None:
    """Find files with cache busting, and rename them to simple names.

    This makes it possible for us to compare gold files.
    """
    with change_dir(directory):
        for fname in os.listdir("."):
            base, ext = os.path.splitext(fname)
            base, _, _ = base.partition("_cb_")
            if base != fname:
                os.rename(fname, base + ext)
Find files with cache busting, and rename them to simple names.

    This makes it possible for us to compare gold files.
    
tests/test_html.py