package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)\n(?!\d+,)`)
var str = `id, text field1, text field2
1,some text,another text
2,some
1999-06-21 text,another text
3,some text,another text
1a,wewe
`
var substitution = " "
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/