Getopt/long and ARGV

Why does getopts delete the option arguments but not the options
themselves from ARGV:

$ cat opt.rb
require “getopt/long”
include Getopt
opts = Long.getopts(
["–plot", BOOLEAN],
["–foo", OPTIONAL]

$ ruby opt.rb --plot --foo 8
["–plot", “–foo”]

Wouldn’t it be better for #getopts to delete all members of ARGV that it
recognizes? Then you can use ARGF for the remaining file names.

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