How Can I Remove Diacritics from Strings in Go?

Removing Diacritics in Go

Eliminating diacritics (accent marks) from UTF-8 encoded strings is a common text processing task. Go provides several libraries for this purpose, as part of its Text normalization utilities.

One approach involves combining multiple libraries, as demonstrated below:

package main

import (
    "fmt"
    "unicode"

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

// isMn determines if a rune represents a nonspacing mark (diacritic).
func isMn(r rune) bool {
    return unicode.Is(unicode.Mn, r)
}

func main() {
    // Create a transformation chain to:
    // - Decompose the string into its unicode normalization form (NFD).
    // - Remove all nonspacing marks (diacritics).
    // - Recompose the string into its normalized form (NFC).
    t := transform.Chain(norm.NFD, transform.RemoveFunc(isMn), norm.NFC)

    // Apply the transformation to the input string "žůžo".
    result, _, _ := transform.String(t, "žůžo")

    // Print the resulting string, which is "zuzo" without diacritics.
    fmt.Println(result)
}

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