From 7d75ba8524eb4bcf60e2aae292df025db8208994 Mon Sep 17 00:00:00 2001
From: Levi Neely <141506390+lneely@users.noreply.github.com>
Date: Sat, 1 Aug 2026 12:00:14 +0200
Subject: [PATCH] gui: preserve original indentation in fenced code/diff blocks

- C++: Use <pre style="white-space:pre-wrap;"> instead of <div> with <br>
  so raw newlines are preserved through to the HTML renderer
- QML: Use TextEdit (preserves whitespace) instead of Label (collapses it)
  for rendering blockRenderedHtml
---
 gui/chatblockmodel.cpp | 18 +++++++++---------
 gui/main.qml           |  5 +++--
 2 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/gui/chatblockmodel.cpp b/gui/chatblockmodel.cpp
index 53a0bb5..e83dd1d 100644
--- a/gui/chatblockmodel.cpp
+++ b/gui/chatblockmodel.cpp
@@ -151,7 +151,7 @@ QString ChatBlockModel::highlightCode(const QString &code, const QString &langua
 
     if (!def.isValid()) {
         delete repo;
-        return QStringLiteral("<div>") + escapeHtml(code).replace('\n', QStringLiteral("<br>")) + QStringLiteral("</div>");
+        return QStringLiteral("<pre style=\"white-space:pre-wrap;\">") + escapeHtml(code) + QStringLiteral("</pre>");
     }
 
     HtmlHighlighter builder;
@@ -163,29 +163,29 @@ QString ChatBlockModel::highlightCode(const QString &code, const QString &langua
     for (int i = 0; i < lines.size(); ++i) {
         state = builder.processLine(lines[i], state);
         if (i < lines.size() - 1)
-            builder.html += QStringLiteral("<br>");
+            builder.html += '\n';
     }
 
     delete repo;
-    return QStringLiteral("<div>") + builder.html + QStringLiteral("</div>");
+    return QStringLiteral("<pre style=\"white-space:pre-wrap;\">") + builder.html + QStringLiteral("</pre>");
 }
 
 QString ChatBlockModel::renderDiff(const QString &diff) const
 {
-    QString html = QStringLiteral("<div>");
+    QString html = QStringLiteral("<pre style=\"white-space:pre-wrap;\">");
     const QStringList lines = diff.split('\n');
     for (const QString &line : lines) {
         if (line.startsWith('+')) {
-            html += QStringLiteral("<span style=\"color:#4caf50;\">") + escapeHtml(line) + QStringLiteral("</span><br>");
+            html += QStringLiteral("<span style=\"color:#4caf50;\">") + escapeHtml(line) + QStringLiteral("</span>\n");
         } else if (line.startsWith('-')) {
-            html += QStringLiteral("<span style=\"color:#f44336;\">") + escapeHtml(line) + QStringLiteral("</span><br>");
+            html += QStringLiteral("<span style=\"color:#f44336;\">") + escapeHtml(line) + QStringLiteral("</span>\n");
         } else if (line.startsWith("@@")) {
-            html += QStringLiteral("<span style=\"color:#2196f3;\">") + escapeHtml(line) + QStringLiteral("</span><br>");
+            html += QStringLiteral("<span style=\"color:#2196f3;\">") + escapeHtml(line) + QStringLiteral("</span>\n");
         } else {
-            html += escapeHtml(line) + QStringLiteral("<br>");
+            html += escapeHtml(line) + '\n';
         }
     }
-    html += QStringLiteral("</div>");
+    html += QStringLiteral("</pre>");
     return html;
 }
 
diff --git a/gui/main.qml b/gui/main.qml
index 0636087..639cbde 100644
--- a/gui/main.qml
+++ b/gui/main.qml
@@ -716,12 +716,13 @@ ApplicationWindow {
             spacing: 0
 
             // Rendered HTML (fenced code/diff) — shown when available
-            Label {
+            TextEdit {
                 Layout.fillWidth: true
                 visible: blockRenderedHtml && blockRenderedHtml.length > 0
                 text: blockRenderedHtml
                 textFormat: Text.RichText
-                wrapMode: Text.WordWrap
+                readOnly: true
+                wrapMode: TextEdit.Wrap
                 font.family: theme.fontFamily || "monospace"
                 font.pointSize: theme.fontSize > 0 ? theme.fontSize : 12
                 color: theme.textColor