! err64_polymark_over_calendar.jnl
! bug1722.  Polymark script failed with calendar mismatch
!           it should not if the overlay time axis is abstract.
!
def ax/t=1-jan-0002:1-jan-0010:1/cal=noleap/unit=year/edges tax
let tval = t[gt=tax]
plot tval
let pos = {`tval[l=4]`,`tval[l=5]`}
poly/ov/nolab/line=15 pos,pos      ! this works

! Here we got an error about mismatched calendars on time axes:
go polymark "poly/ov/nolab/pal=red/line=1" pos pos " " circle .5

