From 90cc878c444b19d91541963ab493d8d990c645b9 Mon Sep 17 00:00:00 2001
From: tompng <tomoyapenguin@gmail.com>
Date: Wed, 17 Jun 2026 11:49:46 +0900
Subject: [PATCH] Fix XPath self axis nodeset order

Self axis shuld create nodesets that each node have position=1
---
 lib/rexml/xpath_parser.rb | 2 +-
 test/xpath/test_base.rb   | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/rexml/xpath_parser.rb b/lib/rexml/xpath_parser.rb
index 821cca95..279ba05a 100644
--- a/lib/rexml/xpath_parser.rb
+++ b/lib/rexml/xpath_parser.rb
@@ -199,7 +199,7 @@ def expr( path_stack, nodeset, context=nil )
           nodeset = [nodeset.first.root_node]
         when :self
           nodeset = step(path_stack) do
-            [:iterate_nodesets, [nodeset]]
+            [:iterate_nodesets, nodeset.map {|node| [node] }]
           end
         when :child
           nodeset = step(path_stack) do
diff --git a/test/xpath/test_base.rb b/test/xpath/test_base.rb
index 43fe3e99..4d464869 100644
--- a/test/xpath/test_base.rb
+++ b/test/xpath/test_base.rb
@@ -276,6 +276,12 @@ def test_axe_self
       assert_equal "c", XPath::first( c, "self::node()" ).name
     end
 
+    def test_axe_self_order
+      doc = REXML::Document.new "<a><b/><c/><d/></a>"
+      assert_equal(["b", "c", "d"], XPath.match(doc, "a/*/self::*[1]").map(&:name))
+      assert_equal([], XPath.match(doc, "a/*/self::*[2]").map(&:name))
+    end
+
     def test_axe_ancestor
       doc = REXML::Document.new "
       <a>