package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)stream \([A-Za-z]+\) \{\R\K(?=\})`)
var str = `stream (abcd) {
}
stream (efg) {
} `
var substitution = "\(text\)\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/