package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?<=[a-zA-Z])(?=[^a-zA-Z])|(?<=[^a-zA-Z])(?=[a-zA-Z])`)
var str = `abc4.5efg2hij89k.9`
var substitution = "\n"
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/