bm-guess-e-source-e-targets () {
local some_act=$1
case "$some_act" in
+ build-source)
+ e_source=true; e_targets='' ;;
*" -b") e_source=false; e_targets='build binary' ;;
*" -B") e_source=false; e_targets='build-arch binary-arch' ;;
*" -A") e_source=false; e_targets='build-indep binary-indep' ;;