Today I encountered a twitter post told me another mysterious Perl behaviour. Could someone please tell me what's wrong with the 3rd statement in following script? I'm looking for relevant part of document in perldoc. told me anot
阅读背景：
使用只有3位索引的列表元素进行正则表达式替换不能像我预期的那样工作
来源：互联网
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