我可以在正则表达式的lookbehind中使用Kleene plus

Question

Can I use the Kleene plus in the lookbehind in regexp?

What is the problem with this regular expression?

(?<=\[\[\w+\-).+(?=\]\])

If I want to select for example "hello" in this text

avaavasda sfdsfdf [[anything-hello]] dsfsdf sfsdfdsf

Answer 1

NO you can't have a variable lookbehind, but you can do this in php:

\[\[\w+-\K[^\]]+(?=]])

the \K is like an amnesia pill (forget all that you have seen before me)