A regular expression (shortened as regex or regexp), sometimes referred to as rational expression, is a sequence of characters that specifies a match pattern in text. Usually such patterns are used by ...

In this case, CloudFlare was trying to use this regular expression to block inline JavaScript. While it isn't made particularly clear in the report, my guess is that this regular expression was ...

emoji-test-regex-pattern offers Java- and JavaScript-compatible regular expression patterns to match all emoji symbols and sequences listed in the emoji-test.txt file provided as part of Unicode® ...