Lua's native string pattern matching facility. Note that Lua patterns are not equivalent to a regex.
Lua's built-in string patterns employ syntax similar to POSIX- or Perl-style regexes, but there are many basic differences. This tag should be used instead of the regex tag, to forestall irrelevant answers from responders who are familiar with regexes but not with Lua.
Using this tag instead of the regex also tag makes it clear that you're not using regexes provided via an imported library.
