package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?U)(?!<span class=\"myclass\"\>.*)(\{\{.*?\}\})(?!.*<\/span>)`)
var str = `<span class="myclass">{{$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$}}</span>
<p>{{$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$}}</p>
<p>{{any text}}</p>`
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/