complete -W "
-M \
-O \
-P \
-Q \
-R \
-S \
-V \
-a \
-b \
-f \
-g \
-h \
-m \
-r \
-s \
-t \
-v \
-z \
abs -abs \
acos -acos \
add -add \
addc -addc \
aexpr -aexpr \
aexprf -aexprf \
anomaly -anomaly \
asin -asin \
atan -atan \
atan2 -atan2 \
bandpass -bandpass \
beta -beta \
boxavg -boxavg \
cat -cat \
cdiread -cdiread \
" -f cdo
