GNU indent options:
-bad -bap -prs -bli0 -bls -cbi0 -cdw -ci4 -cli4 -cp33 -di16 -hnl -i4 -l130
-lc80 -lp -nbbb -nbbo -nbc -nbfda -nce -ncs -npsl -npcs -nsaf -nsai -nsob
-pi4 -nprs -sbi0 -ts4 -ut