def match_rule_patterns(fixed_text, cur=0):
    """Matches given text at cursor position with rule patterns

    Returns a dictionary of four elements:

    - "matched" - Bool: depending on if match found
    - "found" - string/None: Value of matched pattern's 'find' key or none
    - "replaced": string Replaced string if match found else input string at
    cursor
    - "rules": dict/None: A dict of rules or None if no match found

    """
    pattern = exact_find_in_pattern(fixed_text, cur, RULE_PATTERNS)
    # if len(pattern) == 1:
    if len(pattern) > 0:
        return {"matched": True, "found": pattern[0]['find'],
                "replaced": pattern[0]['replace'], "rules": pattern[0]['rules']}
    else:
        return {"matched": False, "found": None,
                "replaced": fixed_text[cur], "rules": None}