I don't really understand what you are trying to do, but the way you use shift and push on @ARGV seems correct to me. Just a simple example (without a mountain of comments making your code much more complicated to decipher): 
use strict;
use warnings;
use v5.14;

while (1) {
    my $current = shift @ARGV;
    say $current;
    push @ARGV, $current;
    say "Hit return or enter 0 to exit";
    chomp (my $input = <STDIN>);
    last if $input eq "0";
}
exit 0;

[download]
This works fine: 
$ perl test_argv.pl one two three
one
Hit return or enter 0 to exit

two
Hit return or enter 0 to exit

three
Hit return or enter 0 to exit

one
Hit return or enter 0 to exit

two
Hit return or enter 0 to exit

three
Hit return or enter 0 to exit

one
Hit return or enter 0 to exit

two
Hit return or enter 0 to exit

three
Hit return or enter 0 to exit
0

[download]

In reply to Re: Seeking regexp @ARGV arrays Wisdom by Laurent_R
in thread Seeking regexp @ARGV arrays Wisdom by Anonymous Monk

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