package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?<!ca.)(?<!vs.)(?<!\w\.\w.)(?<![A-Z][a-z]\.)(?<![A-Z][a-z][a-z]\.)(?<![A-Z][a-z][a-z][a-z]\.)((?<=[.!?])|(?<=[.!?][\'"]))[\s]{1,20}((?=[A-Z])|(?=[0-9])|(?=\"))`)
var str = ``
var substitution = "\n\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/