Copyright 2010 The Go Authors. All rights reserved. Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.

package mime

import (
	
)
isTSpecial reports whether rune is in 'tspecials' as defined by RFC 1521 and RFC 2045.
func ( rune) bool {
	return strings.ContainsRune(`()<>@,;:\"/[]?=`, )
}
isTokenChar reports whether rune is in 'token' as defined by RFC 1521 and RFC 2045.
token := 1*<any (US-ASCII) CHAR except SPACE, CTLs, or tspecials>
	return  > 0x20 &&  < 0x7f && !isTSpecial()
}
isToken reports whether s is a 'token' as defined by RFC 1521 and RFC 2045.
func ( string) bool {
	if  == "" {
		return false
	}
	return strings.IndexFunc(, isNotTokenChar) < 0