Regex Editor & Tester

This regex matches the literal marker '@n1:' followed by the shortest possible sequence of any characters (non-greedy) up to the first single whitespace character. It captures the marker, the content before the space, and the delimiter itself, which is useful for extracting the first token after a labeled prefix on each line. Typical use cases include parsing configuration files, log lines, or command outputs where values are prefixed with a directive like '@n1:'.