link to the Guile library and add some Guile demo code – evaluate code from CLI argument
try:
relpipe-in-fstab | relpipe-tr-guile 'fstab' '(or (= a b) (= a a) )' | relpipe-out-tabular
relpipe-in-fstab | relpipe-tr-guile 'fstab' '(or (= a b) (= a 9) )' | relpipe-out-tabular