package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`\.[a-z_-][\w-]*(?=[^{}]*{[^{}]*})`)
var str = `.class-a, #id-a, .class-b:hover { text-align: center; }
table.simple{background:#fff;}.bg-white{background:#fff;}
/*# sourceMappingURL=style.css.map */
/*
Example comment file.css
*/`
var substitution = ".a"
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/