在哪里可以找到所有Golang regexp规范？ [重复]

Question

This question already has an answer here:

• Reference - What does this regex mean? 1 answer

I try to find all in one golang regexp rules/specification/accepted syntax. However as it turned out - it's not simple task. There is some resource I've found:

• https://code.google.com/p/re2/wiki/Syntax (link from regexp package)
• https://regex-golang.appspot.com/assets/html/index.html
• https://github.com/StefanSchroeder/Golang-Regex-Tutorial/blob/master/01-chapter1.markdown

There first one it is almost what I need, but there is so many complicated moments where I just doesn't understand what's going on (no legenda and no explanations - only for those who already know something). See some examples below:

\d  Perl character class #what does it have with Perl?
[[:name:]]  named ASCII class inside character class (≡ [:name:])

Could anybody help me?

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Answer 1

The official documentation is http://golang.org/pkg/regexp/syntax/

Perl in particular is a programming language. From the Wikipedia entry on Perl:

Perl 5 gained widespread popularity in the late 1990s as a CGI scripting language, in part due to its unsurpassed regular expression and string parsing abilities.