Surprise? ARGVundefined after processing ARGF

Ruby
1

I found this behavior surprising. Is it
intentional (and therefore something I need
to understand better), or is it a bug:

 print_usage if ARGV[0] == nil
 puts ARGV[0]  # => filename

 # Parse the document
 @doc = Document.new ARGF.read()
 puts ARGV[0]  # => nil
2

Hi,

In message “Re: Surprise? ARGV[0] undefined after processing ARGF”
on Thu, 22 Jun 2006 10:19:00 +0900, Eric A.
[email protected] writes:
|I found this behavior surprising. Is it
|intentional (and therefore something I need
|to understand better), or is it a bug:

Intentional. Processed file names are removed from ARGV to tell you
how far you have done already.

						matz.
3

Ok.
Thanks.