From 9c42ae91b735bda29de9afbc1333da52a85b3297 Mon Sep 17 00:00:00 2001
From: Timothee Cour <timothee.cour2@gmail.com>
Date: Thu, 18 Jun 2020 13:36:45 -0700
Subject: add legacy workaround; improve test so that it actually tests for the
 bugfix

---
 lib/core/macros.nim | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'lib')

diff --git a/lib/core/macros.nim b/lib/core/macros.nim
index 04a85d355..1b0986d33 100644
--- a/lib/core/macros.nim
+++ b/lib/core/macros.nim
@@ -801,12 +801,14 @@ proc newLit*[T](s: set[T]): NimNode {.compileTime.} =
     result = newCall(typ,result)
 
 proc isNamedTuple(T: typedesc): bool {.magic: "TypeTrait".}
-  ## See typetraits.isNamedTuple
+  ## See `typetraits.isNamedTuple`
 
 proc newLit*[T: tuple](arg: T): NimNode {.compileTime.} =
+  ## use -d:nimHasWorkaround14720 to restore behavior prior to PR, forcing
+  ## a named tuple even when `arg` is unnamed.
   result = nnkTupleConstr.newTree
-  when isNamedTuple(T):
-    for a,b in arg.fieldPairs:
+  when defined(nimHasWorkaround14720) or isNamedTuple(T):
+    for a, b in arg.fieldPairs:
       result.add nnkExprColonExpr.newTree(newIdentNode(a), newLit(b))
   else:
     for b in arg.fields:
-- 
cgit 1.4.1-2-gfad0