正则表达式 – 哪些字符可以用作正则表达式分隔符？

With the m you can use any pair of non-whitespace characters as delimiters.

所以任何事情都会发生,除了空白.这一切的全部是：

If “/” is the delimiter then the initial m is optional. With the m you can use any pair of non-whitespace characters as delimiters. This is particularly useful for matching path names that contain “/”,to avoid LTS (leaning toothpick syndrome). If “?” is the delimiter,then the match-only-once rule of ?PATTERN? applies. If “‘” is the delimiter,no interpolation is performed on the PATTERN. When using a character valid in an identifier,whitespace is required after the m.