Function unescape

aiohttp/multipart.py:70–71

(text, *, chars=''.join(map(re.escape, CHAR)))

        return substring.isdigit()

    def unescape(text, *, chars=&class="cm">#x27;'.join(map(re.escape, CHAR))):
        return re.sub(&class="cm">#x27;\\\\([{}])class="st">'.format(chars), '\\1', text)

    if not header:
        return None, {}