package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)^\*\*([^~*]*?~~(?!~))(?:(?1){2})*[^~*]*?\*\*`)
var str = `MATCH THESE:
** basic ~~ case **
**~~**
** intermediate ~~ ~~ ~~ **
** this ~~ is ~~ more~~ ~~complex ~~ **
BUT NOT THESE:
** three ~~~ tildes **
** even ~~ number ~~ **
**some** **stuff~~more**
**no~~~~~~**
** ~~~~ ~~~~~~ **`
for i, match := range re.FindAllString(str, -1) {
fmt.Println(match, "found at index", i)
}
}
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/