func strings.ContainsRune

8 uses

	strings (current package)
		strings.go#L70: func ContainsRune(s string, r rune) bool {
		strings.go#L949: 		if !ContainsRune(cutset, r) {
		strings.go#L997: 		if !ContainsRune(cutset, r) {

	encoding/json
		encode.go#L912: 		case strings.ContainsRune("!#$%&()*+-./:;<=>?@[]^_{|}~ ", c):

	math/big
		ratconv.go#L18: 	return strings.ContainsRune("+-/0123456789.eE", ch)
		ratconv.go#L31: 	if !strings.ContainsRune("efgEFGv", ch) {

	mime
		grammar.go#L14: 	return strings.ContainsRune(`()<>@,;:\"/[]?=`, r)

	regexp/syntax
		regexp.go#L256: 		if strings.ContainsRune(meta, r) || force {