doc comment at end treats previous expression as discarded

[timotheecour]

not 100% sure whether this is a bug or by design but it is surprising:

this gives:
Error: expression 'fun0()' is of type 'string' and has to be discarded
changing ## foo to # foo removes the error

when defined(true):
  template foo(fun): untyped=
    fun()
    ## foo

  proc fun0(): auto = "asdf"
  echo foo(fun0)

[Araq]

It's by design, the rationale here is

a) it's hard to care for these nkDocComment nodes everywhere in the sematic checking.
b) conceptually it's like Python's """foo""" documentation string/comment and so is allowed to influence the type/discard checking.

[krux02]

Is the question answered? Can this be closed?