package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)[#.][-_]?[_a-zA-Z]+(?:\w|\\.)*|(?<=\s+|^)(?:\w+|\*)|\[[^\s"'=<>`]+?(?<![~|^$*])([~|^$*]?=(?:['"].*['"]|[^\s"'=<>`]+))?\]|:[\w-]+(?:\(.*\))?`)
var str = `.class {}
.class .class {}
.class #id {}
tag #idtag {}
[attribute] {}
[attribute*="value"] {}
[attribute$=value] {}
.class:not(.class) {}
.clas\$s tag
.class:nth-child(2n+8):nth-of-type(-n+15)
tag *`
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/