package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?mi)^([\w-]+)-\d{4}-\d{2}-\d{2}-\d{2}-\d{2}-\d{2}.gz$`)
var str = `repo-2019-12-31-14-30-11.gz`
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/