alias _bf_input_eof "bf_${* ?}" // at EOF, just continue
alias _bf_input_dispatch "set _bf_inputval_ _bf_input_get; set _bf_inputval_$_bf_inputval _bf_input_eof; _bf_vcall _bf_inputval_ ${* ?}"
alias bf_, "_bf_pop bf_input _bf_inputval; _bf_input_dispatch ${* ?}"
alias _bf_input_eof "bf_${* ?}" // at EOF, just continue
alias _bf_input_dispatch "set _bf_inputval_ _bf_input_get; set _bf_inputval_$_bf_inputval _bf_input_eof; _bf_vcall _bf_inputval_ ${* ?}"
alias bf_, "_bf_pop bf_input _bf_inputval; _bf_input_dispatch ${* ?}"