Nim/tests/template/tinnerouterproc.nim

block: # #20002
  proc bar(x: int): int = 10
  template foo =
    proc bar(x: int): int {.gensym.} = x + 2
    doAssert bar(3) == 5
    discard 3.bar # evaluates to 10 but only check if it compiles for now
  block:
    foo()

block: # issue #23813
  template r(body: untyped) =
    proc x() {.gensym.} =
      body
  template g() =
    r:
      let y = 0
    r:
      proc y() = discard
      y()
  g()