Regex Editor & Tester

Matches any sequence where a single word character (letter, digit, or underscore) repeats 3 or more times consecutively, using a capture group and backreference. The 'g' flag finds all occurrences throughout the text, while 'm' enables per-line matching. Useful for detecting elongated words like 'sooo', spotting typos with doubled letters, or validating input that shouldn't contain excessive character repetition.