Regex Tester & Validator

This regular expression is designed to parse lines from a Korean chat log, specifically extracting the sender, timestamp, and message content. It expects a string format like `[Sender] [오전 09:00] Hello`, capturing the Korean AM/PM equivalents ("오전" or "오후"). With the multiline and global flags enabled, it efficiently processes multi-line transcripts by matching each line individually. It is highly useful for data extraction and analysis from localized chat exports.