From ab56220011a0bc83e74fa1bc9a3f38b1e49687ab Mon Sep 17 00:00:00 2001
From: Mark Spanbroek <mark@spanbroek.net>
Date: Thu, 20 Oct 2022 12:08:51 +0200
Subject: [PATCH] Fix redefinition of 'T`gensymXX' error

In rare instances, the Nim compiler will generate the same
symbol more than once. Adding a block works around this issue.

Reproducing this behavior in a unit test has proved elusive.
---
 questionable/indexing.nim | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/questionable/indexing.nim b/questionable/indexing.nim
index d849c67..e265967 100644
--- a/questionable/indexing.nim
+++ b/questionable/indexing.nim
@@ -4,8 +4,9 @@ macro `.?`*(expression: typed, brackets: untyped{nkBracket}): untyped =
   # chain is of shape: expression.?[index]
   let index = brackets[0]
   quote do:
-    type T = typeof(`expression`[`index`])
-    try:
-      `expression`[`index`].some
-    except KeyError:
-      T.none
+    block:
+      type T = typeof(`expression`[`index`])
+      try:
+        `expression`[`index`].some
+      except KeyError:
+        T.none