package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)^([ \t]*\S.*\n)[ \t]*$\n(?=[ \t]*\S)`)
var str = `<nav>
<ul>
<li><a href="#">London</a></li>
<li><a href="#">Paris</a></li>
<li><a href="#">Tokyo</a></li>
</ul>
</nav>
<div>new context</div>
<div>new context</div>`
var substitution = "$1"
fmt.Println(re.ReplaceAllString(str, substitution))
}
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/