But I don't want to match only at that position, like the \G anchor would have.

Then don't use \G. Without \G the construct does exactly what you want: 

use 5.010;
$_ = 'aaababaab';
while (/(a+)/pcg) {
    say pos($_), " ", $1;
}
__END__
3 aaa
5 a
8 aa

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In reply to Re: Regex: continue from previous match by moritz
in thread Regex: continue from previous match by John M. Dlugosz

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