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go/doc/progs/echo.go
Mikio Hara ab3365d34e doc/progs: gofmt -w
R=r, gri, r
CC=golang-dev
https://golang.org/cl/4662085
2011-07-09 20:16:45 +10:00

33 lines
584 B
Go

// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"os"
"flag" // command line option parser
)
var omitNewline = flag.Bool("n", false, "don't print final newline")
const (
Space = " "
Newline = "\n"
)
func main() {
flag.Parse() // Scans the arg list and sets up flags
var s string = ""
for i := 0; i < flag.NArg(); i++ {
if i > 0 {
s += Space
}
s += flag.Arg(i)
}
if !*omitNewline {
s += Newline
}
os.Stdout.WriteString(s)
}