From 7347afca902557e4c9acf584a121035e25cadda3 Mon Sep 17 00:00:00 2001
From: Leonel Galan <leonelgalan@gmail.com>
Date: Mon, 22 Feb 2016 15:43:52 -0500
Subject: [PATCH] Fixes error when using to `group_by_*`

---
 lib/groupdate/magic.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/groupdate/magic.rb b/lib/groupdate/magic.rb
index f41b208..4b936d2 100644
--- a/lib/groupdate/magic.rb
+++ b/lib/groupdate/magic.rb
@@ -222,7 +222,7 @@ module Groupdate
       series =
         if multiple_groups
           keys = count.keys.map { |k| k[0...@group_index] + k[(@group_index + 1)..-1] }.uniq
-          series = series.reverse if reverse
+          series = series.to_a.reverse if reverse
           keys.flat_map do |k|
             series.map { |s| k[0...@group_index] + [s] + k[@group_index..-1] }
           end
--
libgit2 0.21.0