Regex Tester & Validator

This PCRE regex matches lines starting with a colon (`:`), which commonly represents the prompt in terminal pagers like `less`, followed by an ANSI escape sequence (`\x1B[`), any character, and a space. It is specifically used for parsing, filtering, or cleaning terminal logs that contain Linux paging artifacts and their associated control codes. This allows developers to cleanly process automated terminal outputs without visual or control character noise.