package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)[\n\r].*(\d\.\s+)(?!.*[\n\r](\d\.\s+)).*((<br\s*\/?>){2})`)
var str = `<br><br><br>. Do not replace <br> here.
1. One
2. Two
3. Three<br><br><br>End of List. Replace first two <br> with \n
New line follows.
<br><br><br>. Do not replace <br> here.`
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/