$start:
    re_pushindex
    re_literal "f", $advance

$find_bar:
    re_literal "bar", $find_o

    #if we made it this far, we're done!
    set I0, 1
    branch $end
    
$find_o:
    re_literal "o", $advance
    branch $find_bar

$advance:
    re_popindex
    re_advance $failure
    branch $start

$failure:
    set I0, 0

$end:
    re_finished