text-normalization.go

package main

import (
    "fmt"
    "unicode"

    "golang.org/x/text/transform"
    "golang.org/x/text/unicode/norm"
)

func isMn(r rune) bool {
    return unicode.Is(unicode.Mn, r) // Mn: nonspacing marks
}

func main() {
    t := transform.Chain(norm.NFD, transform.RemoveFunc(isMn), norm.NFC)
    result, _, _ := transform.String(t, "São Paulo, Brazil. Wien, Österreich.")
    fmt.Println(result)
}