From 25627eae0fa82af571b2a48a6b6e292f040c227f Mon Sep 17 00:00:00 2001
From: erdgeist <erdgeist@erdgeist.org>
Date: Sun, 2 Aug 2026 14:52:21 +0200
Subject: Say when a translation is unchanged and where to look instead

---
 app/views/revisions/diff.html.erb | 16 ++++++++++++++++
 config/locales/de.yml             |  2 ++
 config/locales/en.yml             |  2 ++
 3 files changed, 20 insertions(+)

diff --git a/app/views/revisions/diff.html.erb b/app/views/revisions/diff.html.erb
index ba320365..5c881f24 100644
--- a/app/views/revisions/diff.html.erb
+++ b/app/views/revisions/diff.html.erb
@@ -71,6 +71,22 @@
 <% end %>
 
 <div id="diffview">
+  <% current_summary = @locale_summary.find { |s| s[:locale] == @translation_locale } %>
+  <% if current_summary && !current_summary[:changed] %>
+    <% elsewhere = @locale_summary.select { |s| s[:changed] }.map { |s|
+         link_to s[:locale].to_s.upcase, diff_node_revisions_path(@node,
+           start_revision: params[:start_revision], end_revision: params[:end_revision],
+           view: @diff_view, translation_locale: s[:locale]) } %>
+    <p class="diff_unchanged diff_locale_pointer">
+      <% if elsewhere.any? %>
+        <%= t(".unchanged_here_html", :lang => @translation_locale.to_s.upcase,
+              :others => safe_join(elsewhere, ", ")) %>
+      <% else %>
+        <%= t(".unchanged_anywhere") %>
+      <% end %>
+    </p>
+  <% end %>
+
   <% if @diff_view == :side_by_side %>
     <div class="diff_side_by_side">
       <div class="diff_column">
diff --git a/config/locales/de.yml b/config/locales/de.yml
index d661bf2a..63f133f1 100644
--- a/config/locales/de.yml
+++ b/config/locales/de.yml
@@ -697,6 +697,8 @@ de:
       compare_numbered: "Stattdessen zwei nummerierte Revisionen vergleichen"
       none_marker: "(keins)"
       no_change: "Keine Änderung."
+      unchanged_here_html: "Keine Änderung in der Übersetzung %{lang} zwischen diesen Revisionen — geändert wurde %{others}."
+      unchanged_anywhere: "Zwischen diesen Revisionen wurde keine Übersetzung geändert."
     index:
       title: "Revisionen für Node: %{path}"
       back_to_node: "Zurück zum Node"
diff --git a/config/locales/en.yml b/config/locales/en.yml
index b98c3d02..27098e87 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -660,6 +660,8 @@ en:
       compare_numbered: "Compare two numbered revisions instead"
       none_marker: "(none)"
       no_change: "No change."
+      unchanged_here_html: "No change in the %{lang} translation between these revisions — %{others} changed."
+      unchanged_anywhere: "No translation changed between these revisions."
     index:
       title: "Revisions for Node: %{path}"
       back_to_node: "Back to node"
-- 
cgit v1.3