package main

import "code.google.com/p/go.text/unicode/norm"
import "fmt"
import "unicode/utf8"

func main() {
  s := "\u0451\u0439" // ёй
  s_nfc := norm.NFC.String(s)
  s_nfd := norm.NFD.String(s)
  for _,x := range [...]string{s, s_nfc, s_nfd} {
    fmt.Printf("'%s' (%x) has %d runes\n", x, x, utf8.RuneCountInString(x))
  }
}

// output:
// $ go build gonorm && ./gonorm
// 'ёй' (d191d0b9) has 2 runes
// 'ёй' (d191d0b9) has 2 runes
// 'ёй' (d0b5cc88d0b8cc86) has 4 runes