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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";
    	"regexp";
    )
    
    func main() {
    	str := "a*b*c*";
    	if sys.argc() > 1 {
    		str = sys.argv(1);
    	}
    	re, err := regexp.Compile(str);
    	if err != nil {
    		print("error: ", err.String(), "\n");
    		sys.exit(1);
    	}
    }