if {[info exists ocean]} { lappend cmd --ocean $ocean }
if {[info exists pirate]} { lappend cmd --pirate $pirate }
manyset [split [eval exec $cmd] " "] ocean pirate
+ if {![llength $ocean] || ![llength $pirate]} {
+ error "$ocean $pirate ?"
+ }
}
lappend scraper $ocean
}