// Using package regexp guarantees linear-time matching.

	const vendorChar = "\x00"

	if vendorExclude && strings.Contains(pattern, vendorChar) {
		return func(name string) bool { return false }
	}

	re := regexp.QuoteMeta(pattern)
	wild := `.*`
	if vendorExclude {
		wild = `[^` + vendorChar + `]*`
		re = replaceVendor(re, vendorChar)
		switch {