x/text/message: Print, Println funcs do not do any language-specific formatting

[vinser]

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

$ go version
on Playground and in Docker

Does this issue reproduce with the latest release?

I don't know because I didn't use it before

What operating system and processor architecture are you using (go env)?

go env Output

$ go env
on Playground and in Docker

What did you do?

package main

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

func main() {
	message.SetString(language.Dutch, "soccer", "voetbal")
	p := message.NewPrinter(language.Dutch)
	p.Println("soccer")
	p.Fprintln(os.Stdout, "soccer")
	p.Print("soccer", "\n")
	p.Printf("soccer", "\n")

}

https://play.golang.org/p/LjQ6DfG1CJX

What did you expect to see?

voetbal
voetbal
voetbal
voetbal

What did you see instead?

soccer
soccer
soccer
voetbal

[seankhliao]

cc @mpvl

should the verbs in https://go.googlesource.com/text/+/refs/heads/master/message/print.go#969 and https://go.googlesource.com/text/+/refs/heads/master/message/print.go#981 be 'm' instead of 'v'?

[gopherbot]

Change https://golang.org/cl/315109 mentions this issue: message: properly translate when using Print

[mpvl]

This is working as intended. Basically, only format strings or strings substituted to %m are translated. There are several reasons why this was chosen to be like this.

Changing the behavior now is a backwards incompatible change, not would it be desirable.