From 43cfd7389ed48d1ba8992eeb09d70097a93c4d5c Mon Sep 17 00:00:00 2001
From: onli <onli@paskuda.biz>
Date: Wed, 7 Jan 2026 10:33:00 +0100
Subject: [PATCH 1/3] Fix: Don't remove version and encoding attributes of all
 elements

---
 lib/oxml/parser.rb | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/oxml/parser.rb b/lib/oxml/parser.rb
index 4d09b76..d3d7319 100644
--- a/lib/oxml/parser.rb
+++ b/lib/oxml/parser.rb
@@ -31,8 +31,10 @@ def attr(name, str)
       @last_attr = "#{name}:#{str}"
       return if @delete_namespace_attributes
 
-      return if name == :version
-      return if name == :encoding
+      # @version and @encoding are attributes of the leading ?xml node we ignore. Checking for the
+      # empty array detects the ?xml origin. Without the check they would become leading nodes
+      return if name == :version && @arr.empty?
+      return if name == :encoding && @arr.empty?
 
       start_element("@#{name}")
       text(str)

From 148351c39b59c782ad0cfb23ac29d167ebc016ea Mon Sep 17 00:00:00 2001
From: onli <onli@paskuda.biz>
Date: Wed, 7 Jan 2026 10:36:09 +0100
Subject: [PATCH 2/3] document changes and version bump

---
 CHANGELOG.md        | 6 ++++++
 lib/oxml/version.rb | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index cb4b0bf..5527fd8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## [0.5.2] - 2026-01-07
+
+### Fixed
+
+- Preserve @version and @encoding attributes outside the ?xml node
+
 ## [0.5.1] - 2024-04-25
 
 ### Fixed
diff --git a/lib/oxml/version.rb b/lib/oxml/version.rb
index d5b43ea..961b2b6 100644
--- a/lib/oxml/version.rb
+++ b/lib/oxml/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module OXML
-  VERSION = '0.5.1'
+  VERSION = '0.5.2'
 end

From a75afadba9835cd1d4f94cb1f6cb60cde1fb073d Mon Sep 17 00:00:00 2001
From: onli <onli@paskuda.biz>
Date: Wed, 7 Jan 2026 11:12:20 +0100
Subject: [PATCH 3/3] Do not add xsi:nil and do close empty elements Makes XML
 documents valid that do not declase the xsi namespace and keeps XML structure
 intact

---
 lib/oxml/builder.rb | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/oxml/builder.rb b/lib/oxml/builder.rb
index d57af83..075e3c1 100644
--- a/lib/oxml/builder.rb
+++ b/lib/oxml/builder.rb
@@ -34,7 +34,8 @@ def traverse_hash(hash, builder)
         elsif value.is_a?(Array)
           traverse_array(key, value, builder)
         elsif value.nil?
-          builder.element(Utils.camelize(key), 'xsi:nil': 'true')
+          builder.element(Utils.camelize(key))
+          builder.pop
         else
           builder.element(Utils.camelize(key))
           builder.text(value)