golang.org/x/text/message.Print有什么作用？

The doc for Printer.Print says:

Print is like fmt.Print, but using language-specific formatting.

but I'm having difficult seeing anything language specific compared to Printer.Printf.

Consider:

package main

import (
    "fmt"

    "golang.org/x/text/language"
    "golang.org/x/text/message"
)

func main() {
    message.SetString(language.English, "foo", "bar")

    p := message.NewPrinter(language.English)
    p.Print("foo")
    fmt.Println()
    p.Printf("foo")
    fmt.Println()
}

Result:

foo
bar

What exactly does Printer.Print do (that is language specific)?

Package message implements formatted I/O for localized strings with functions analogous to the fmt's print functions. It is a drop-in replacement for fmt.

Language-specific behavior does not distinguish Printer.Print from Printer.Printf -- rather it distinguishes each from their analogous functions in the fmt package. It's right there in the documentation you quoted.