func FindCharsetInHTML(html string) string {
	charsetMatches := metaTagCharsetRegexp.FindAllStringSubmatch(html, -1)
	if len(charsetMatches) > 0 {
		return charsetMatches[0][metaTagCharsetIndex]
	}
	return ""
}
func FindCharsetInHTML(html string) string {
	charsetMatches := metaTagCharsetRegexp.FindAllStringSubmatch(html, -1)
	if len(charsetMatches) > 0 {
		return charsetMatches[0][metaTagCharsetIndex]
	}
	return ""
}
func FindCharsetInHTML ( html string ) string { charsetMatches := metaTagCharsetRegexp . FindAllStringSubmatch ( html , - 1 ) if len ( charsetMatches ) > 0 { return charsetMatches [ 0 ] [ metaTagCharsetIndex ] } return " " }
// FindCharsetInHTML looks for charset in the HTML meta tag (v4.01 and v5).
FindCharsetInHTML looks for charset in the HTML meta tag ( v4 . 01 and v5 ) .