Test, validate and match regular expressions
Matches text beginning with a literal '@' symbol followed by a lazy capture group that grabs any characters (excluding newlines) up to the nearest '>' character. The non-greedy quantifier ensures the shortest possible match is captured, stopping at the first closing '>'. Commonly used to extract content between '@' and '>' delimiters, such as parsing mentions, custom tags, or attribute values in templating and markup systems. The global and multiline flags enable finding all occurrences throughout multi-line input.