Can we hide real filename due to https://t.co/LMiYsdIltI?

output

type: application/x-stuff
filename: This is ***fun***
type: application/x-stuff
filename: a

x.go

package main

import (
	"fmt"
	"mime"
)

func parse(s string) {
	mediatype, params, err := mime.ParseMediaType(s)
	if err != nil {
		panic(err)
	}

	fmt.Println("type:", mediatype)
	fmt.Println("filename:", params["filename"])
}

func main() {
	parse(`application/x-stuff; filename*=us-ascii'en-us'This%20is%20%2A%2A%2Afun%2A%2A%2A; filename="a"`)
	parse(`application/x-stuff; filename*="UTF-16BE'en-us'%00%22%00y%00%5C%004%00.%00%5C%00w%00%5C%00a%00r%00K"; filename="a"`)
}