ATSIGN_CONTEXT = "https://www.w3.org/ns/activitystreams"

PUBLIC_IDS = set([
        'https://www.w3.org/ns/activitystreams#Public',
        'as:Public',
        'Public',
        ])

URL_REGEXP = r'https?://(?:[-\w.]|(?:%[\da-fA-F]{2}))+'