How to Highlight Search Terms in Python Text

def highlight_search_term(text: str, term: str) -> str:
    """Highlight all occurrences of term in text using terminal-style markers."""
    if not term:
        return text

    term_lower = term.lower()
    result = []
    i = 0

    while i < len(text):
        # Check if the term starts at position i (case-insensitive)
        if text[i:i + len(term)].lower() == term_lower:
            result.append(f"[{term}]")
            i += len(term)
        else:
            result.append(text[i])
            i += 1

    return "".join(result)


if __name__ == "__main__":
    sample_text = "The quick brown fox jumps over the lazy dog. The fox is quick."
    search_word = "fox"

    highlighted = highlight_search_term(sample_text, search_word)
    print(highlighted)