.*? 贪婪匹配
例：<img src="test.jpg" width="60px" height="80px"/>
规则：src=".*?"
结果：src="test.jpg"
.*+ 多匹配
例：Send personal email to ben@forta.com or
ben.forta@forta.com . For questions about a
book use support@forta.com . If your message
is urgent try ben@urgent.forta.com . Feel
free to send unsolicited email to
spam@forta.com (wouldn't it be nice if
it were that simple, huh?).
规则：[\w.]+@[\w.]+\.\w+
结果
Send personal email to ben@forta.com or
ben.forta@forta.com . For questions about a
book use support@forta.com . If your message
is urgent try ben@urgent.forta.com . Feel
free to send unsolicited email to
spam@forta.com (wouldn't it be nice if
it were that simple, huh?).
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