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go/doc/progs/echo.go

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// 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 "os";
Flag "flag";
)
var n_flag = Flag.Bool("n", false, nil, "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 !n_flag.BVal() {
s += Newline
}
OS.Stdout.WriteString(s);
}