package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)^((?:<([a-zA-Z]+)(?:[ \n]+[a-zA-Z]+(?:=(["'])[\-\/_a-zA-Z0-9 &;.:?=#]*(\3))?)*>(?1)?<\/(\2)>|[a-zA-Z0-9\-_\n &;.:?=#]+)+|<!--.*?-->)$`)
var str = `<a href="https://codegolf.stackexchange.com/2?b=2">abc<span title="a"></span></a><b><!--abc<b>--></b>`
for i, match := range re.FindAllString(str, -1) {
fmt.Println(match, "found at index", i)
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Golang, please visit: https://golang.org/pkg/regexp/