x/text/currency: numbers not being formatted based on the language

[alexedwards]

What version of Go are you using (go version)?

go1.16.5 linux/amd64

Does this issue reproduce with the latest release?

Yes

What did you do?

package main

import (
	"golang.org/x/text/currency"
	"golang.org/x/text/language"
	"golang.org/x/text/message"
)

func main() {
	p := message.NewPrinter(language.German)
	p.Print(currency.EUR.Amount(123.56))
}

https://play.golang.org/p/EWlRXaoptzU

What did you expect to see?

EUR 123,56

With the German language decimal separator ,.

What did you see instead?

EUR 123.56

Note: Not using the currency package, but formatting the number manually yields the expected result - https://play.golang.org/p/W6SALPNJBg6

[dmitshur]

CC @mpvl via owners.

[gopherbot]

Change https://golang.org/cl/353935 mentions this issue: text/currency: format currency amount according to the locale