| { [ "$category" = '*' ] && grep -avF ':' || grep -awF "${category}"; } \
| { for n in 1 2 3 4 5 6 7 8 9 0; do
read -r line && printf '%s\n' "$line" || break;
| { [ "$category" = '*' ] && grep -avF ':' || grep -awF "${category}"; } \
| { for n in 1 2 3 4 5 6 7 8 9 0; do
read -r line && printf '%s\n' "$line" || break;