Correct, though there are multiple interpretations of what a "regex" is. In the theoretical sense you're correct, though some (most programmers, I'd say) mean "

Correct, though there are multiple interpretations of what a "regex" is. In the theoretical sense you're correct, though some (most programmers, I'd say) mean "PCRE" when they say regex. And PCREs are pretty powerful, see [1] for example [1] https://news.ycombinator.com/item?id=9748736 https://news.ycombinator.com/item?id=9748736