package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?mi)(\<manufacturer>([^<]*)<\/manufacturer>)(\s*)(\<item_category>)(?:\2\s*)?([^<]*)(<\/item_category>)`)
var str = `<vehicle>
<manufacturer>JCB</manufacturer>
<item_category>JCB Tractors</item_category>
</vehicle>
<vehicle>
<manufacturer>Caterpillar</manufacturer>
<item_category>Digger</item_category>
</vehicle>
<vehicle>
<manufacturer>Caterpillar</manufacturer>
<item_category>Caterpillar Digger</item_category>
</vehicle>`
var substitution = "$1$2$3$4$5$6"
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/