因为我对
re2有点新意,所以我想弄清楚如何在
Go中使用JS,C或任何PCRE风格的正向前瞻(？= regex).
以下是我正在寻找的一些例子.
JS：
'foo bar baz'.match(/^[\s\S]+?(?=baz|$)/);
蟒蛇：
re.match('^[\s\S]+?(?=baz|$)','foo bar baz')
>注意：两个例子都匹配’foo bar’
非常感谢.
根据
Syntax Documentation,不支持此功能：
(?=re)before text matchingre(NOT SUPPORTED)
此外,从WhyRE2开始：
As a matter of principle,RE2 does not support constructs for which only backtracking solutions are known to exist. Thus,backreferences and look-around assertions are not supported.