Experimental `.` operator confuses the dot call syntax notation

[PMunch]

I've been struggling with a hard to track down bug in my protobuf library for quite a while now. I couldn't for the life of me figure out what the error message I got meant. The problem was a simple missing export marker on a template, but the error pointed to something completely different. The below example shows what I'm talking about:

{.experimental.}
import macros

type
  TestType = ref object
    private_field: string

# This is the analogue to my procedure that was missing an export marker
#template getField(obj, field: untyped): untyped =
#  obj.field

# This experimental will match all unmatched field access to this macro before failing.
macro `.`(obj: TestType, field: untyped): untyped =
  # This is probably not strictly necessary for this example, but it shows what I'm
  # trying to achieve with the `.` macro.
  let private = newIdentNode("private_" & $field)
  # This is where the problem lies. The first commented statement will create error 1,
  # while the second statement would create error 2 below.
  result = quote do:
    #getField(`obj`, `private`)
    #`obj`.getField(`private`)

var tt = new TestType
tt.private_field = "Hello world"

echo tt.field

Error 1 (this is what we would normally see):
Error: undeclared identifier: 'getField'
Error 2 (this is what confused me):
Error: undeclared identifier: 'private_field'
If we remove the comments on the getField proc both examples work