From 0ed6cf17750b887c0bf06253a52a0cfac8db7256 Mon Sep 17 00:00:00 2001
From: trichoplax <xalpohcirt@gmail.com>
Date: Fri, 31 Jul 2026 06:54:11 +0100
Subject: [PATCH 1/2] Ignore CRLF line ending changes in diffs

---
 app/views/post_history/_diff.html.erb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/app/views/post_history/_diff.html.erb b/app/views/post_history/_diff.html.erb
index e63be8418..77eb63d7b 100644
--- a/app/views/post_history/_diff.html.erb
+++ b/app/views/post_history/_diff.html.erb
@@ -1,7 +1,7 @@
 <div class="diff">
   <% if before.present? && after.present? %>
     <% if before.is_a?(String) && after.is_a?(String) %>
-      <% diff = Diffy::SplitDiff.new(before, after, format: :html) %>
+      <% diff = Diffy::SplitDiff.new(before, after, format: :html, ignore_crlf: true) %>
       <div class="diff-section">
         <div class="diff-old is-changed raw-markdown">
           <%= raw(diff.left) %>
@@ -78,4 +78,4 @@
       <% end %>
     </div>
   <% end %>
-</div>
\ No newline at end of file
+</div>

From 6ebeec0ca95f50fa6f0a9f63dac5d99cda5c5234 Mon Sep 17 00:00:00 2001
From: trichoplax <xalpohcirt@gmail.com>
Date: Fri, 31 Jul 2026 07:12:48 +0100
Subject: [PATCH 2/2] Normalize newlines in diff before_state and after_state

---
 app/models/concerns/post_validations.rb | 4 ++--
 app/models/post_history.rb              | 6 ++++++
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/app/models/concerns/post_validations.rb b/app/models/concerns/post_validations.rb
index 9b8fa745a..1deaa0e51 100644
--- a/app/models/concerns/post_validations.rb
+++ b/app/models/concerns/post_validations.rb
@@ -3,8 +3,8 @@ module PostValidations
   extend ActiveSupport::Concern
 
   included do
-    normalizes :body_markdown, with: lambda { |body_markdown|
-      body_markdown.encode(body_markdown.encoding, universal_newline: true)
+    normalizes :body_markdown, with: lambda { |text|
+      text.encode(text.encoding, universal_newline: true)
     }
 
     validate :tags_in_tag_set, if: -> { post_type.has_tags }
diff --git a/app/models/post_history.rb b/app/models/post_history.rb
index 4e1fdfd6b..2190ac642 100644
--- a/app/models/post_history.rb
+++ b/app/models/post_history.rb
@@ -11,6 +11,12 @@ class PostHistory < ApplicationRecord
   scope :of_type, ->(name) { joins(:post_history_type).where(post_history_types: { name: name }) }
   scope :on_undeleted, -> { joins(:post).where(posts: { deleted: false }) }
 
+  normalize_newlines = lambda { |text|
+    text.encode(text.encoding, universal_newline: true)
+  }
+  normalizes :before_state, with: normalize_newlines
+  normalizes :after_state, with: normalize_newlines
+
   def before_tags
     tags.where(post_history_tags: { relationship: 'before' })
   end