Regular Expression(正規表現) Part16

[79 デフォルトの名無しさん 2021/12/21(火) 05:04:20.96 ID:DlXpRfUq]

(?<![.\d])(?:(2(?:5[0-5]|[0-4]\d)|1\d\d|[1-9]?\d)\.){3}\g'1'(?![.\d])