macroStack.lean:4:5: error: unknown identifier 'x'
macroStack.lean:8:6: error: unknown identifier 'x'
with resulting expansion
  Greater._@._internal._hyg.0 x 0 
while expanding
  x > 0 
while expanding
  if h:(x > 0) then 1 else 0 
macroStack.lean:11:9: error: elaboration function for 'Lean.Parser.Term.liftMethod' has not been implemented
macroStack.lean:17:0: error: application type mismatch
  x + x✝¹ + x✝
argument
  x✝
has type
  String
but is expected to have type
  Nat
failed to synthesize instance
  CoeT String x✝ Nat
with resulting expansion
   HasAdd.add._@._internal._hyg.0  ( x
   +  x  )  x 
while expanding
   ( x
   +  x  )  +  x 
while expanding
   foo!  ( x
   +  x  ) 
while expanding
   foo!  ( x
   +  x  )  <  1 
while expanding
   if  foo!  ( x
   +  x  )  <  1  then  true  else  false 
while expanding
  bla! x