# subsystem. Do this one help class at a time to make it easier to
# find the source a failure.
-foreach cls { "ada" "c" "c++" "fortran" "go" \
+foreach cls { "ada" "c" "c++" "d" "fortran" "go" \
"optimizers" "param" "target" "warnings" } {
check_for_options c "--help=$cls" "" "^ +-.*\[^:.\]$" ""