TRIPLESTR_LIT not working in places where STR_LIT does work

gistfile1.nim

import macros

macro foo (first, second : expr) : stmt =
  echo first
  echo second
  echo ""
  discard


foo one, two

foo "three dogs", "four"

foo five, """six"""

discard """
output:

one
two

three dogs
four

five
SIGSEGV: Illegal storage access. (Attempt to read from nil?)
"""