package rfc3986 import ( "github.com/reiver/go-rfc2234" ) // IsUnreserved returns true if the value of 'r' matches 'unreserved' as defined in IETF RFC-3986: // // unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~" func IsUnreserved(r rune) bool { if rfc2234.IsAlpha(r) { return true } if rfc2234.IsDigit(r) { return true } switch r { case '-' , '.' , '_' , '~': return true } return false }