From e26035279226ee8a8a06139408aae2ea7878f063 Mon Sep 17 00:00:00 2001
From: "Brian J. Cardiff" <bcardiff@manas.tech>
Date: Sat, 30 Jan 2021 09:02:13 -0300
Subject: [PATCH] XML: fix deprecation warning (#10335)

---
 spec/std/xml/xpath_spec.cr | 5 +++++
 src/xml/node_set.cr        | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/spec/std/xml/xpath_spec.cr b/spec/std/xml/xpath_spec.cr
index 9f243cf9f2ee..0675d4c708d2 100644
--- a/spec/std/xml/xpath_spec.cr
+++ b/spec/std/xml/xpath_spec.cr
@@ -206,5 +206,10 @@ module XML
       result = doc.xpath_string("string(//feed/person[@id=$value]/@id)", variables: {"value" => 2})
       result.should eq("2")
     end
+
+    it "NodeSet#to_s" do
+      doc = doc()
+      doc.xpath("//people/person").to_s
+    end
   end
 end
diff --git a/src/xml/node_set.cr b/src/xml/node_set.cr
index 541a440d1f09..33b7afbf2d8a 100644
--- a/src/xml/node_set.cr
+++ b/src/xml/node_set.cr
@@ -46,7 +46,7 @@ struct XML::NodeSet
   end
 
   def to_s(io : IO) : Nil
-    join '\n', io
+    join io, '\n'
   end
 
   def to_unsafe