convert wildcard positional to equivalent regexp string match

convert.go

// see working example:- https://play.golang.org/p/W5e7rMv6nXv

func WildcardRegExp(w string) string {
	return "^" + strings.NewReplacer(
		".", "\\.",  // escape regexp special chars...
		"^", "\\^",
		"$", "\\$",
		"+", "\\+",
		"(", "\\(",
		")", "\\)",
		"[", "\\[",
		"]", "\\]",
		"{", "\\{",
		"}", "\\}",
		"\\\\*", "\\\\.*",  // convert wildcard escapes...
		"\\\\?", "\\\\.",
		"\\*", "\\*", 
		"\\?", "\\?",
		"*", ".*",  // convert wildcard specials to regexp equivalent...
		"?", ".",
	).Replace(w) + "$"
}