When arguments are sent to Perl, they're in the @ARGV array. When you read from <>, Perl treats the elements in @ARGV as though they were actually filenames.

Perhaps you want to force a read from STDIN, or else remove the elements from @ARGV (locally, perhaps). 
while (<STDIN>) { ... }

# or

{
  local @ARGV;
  while (<>) { ... }
}

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japhy -- Perl and Regex Hacker

In reply to Re: Command line args by japhy
in thread Command line args by iamcal

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