Function is_subsequence

api/messaging.py:60–63

Check if shorter is a subsequence of longer (all chars appear in same order).

(shorter: str, longer: str)

        return ''.join(c for c in phone if c.isdigit() or c == '+')

def is_subsequence(shorter: str, longer: str) -> bool:
    """Check if shorter is a subsequence of longer (all chars appear in same order)."""
    it = iter(longer)
    return all(c in it for c in shorter)

def phone_numbers_fuzzy_match(num1: str, num2: str) -> bool:
    """