O=$1
shift
objtype=$1
shift

nl='
'
reduce="("`ls -p ../$objtype/*.[cs] 2>/dev/null | sed 's/..$//' | sed 's/^.*\///' | tr "$nl" '|' | sed 's/.$//'`")"

echo $* | tr ' ' "$nl" | egrep -v $reduce | tr "$nl" ' '