Fix the parsing of the chat cache so the lists are no longer broken and add tests.

autotests/CMakeLists.txt

@@ -105,6 +105,12 @@ ecm_add_test(
     TEST_NAME modeltest
 )
 
+ecm_add_test(
+    blockcachetest.cpp
+    LINK_LIBRARIES neochat Qt::Test
+    TEST_NAME blockcachetest
+)
+
 macro(add_qml_tests)
     if (WIN32)
         set(_extra_args -platform offscreen)

autotests/blockcachetest.cpp

@@ -0,0 +1,52 @@
+// SPDX-FileCopyrightText: 2026 James Graham <james.h.graham@protonmail.com>
+// SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
+
+#include <QObject>
+#include <QTest>
+
+#include "blockcache.h"
+
+#include "enums/messagecomponenttype.h"
+
+using namespace Block;
+
+class BlockCacheTest : public QObject
+{
+    Q_OBJECT
+
+private Q_SLOTS:
+    void toStringTest_data();
+    void toStringTest();
+};
+
+void BlockCacheTest::toStringTest_data()
+{
+    QTest::addColumn<QString>("inputString");
+    QTest::addColumn<MessageComponentType::Type>("itemType");
+    QTest::addColumn<QString>("outputstring");
+
+    QTest::newRow("plainText") << u"test string"_s << MessageComponentType::Text << u"test string"_s;
+    QTest::newRow("list") << u"- list 1\n- list 2\n- list 3\n"_s << MessageComponentType::Text << u"- list 1\n- list 2\n- list 3"_s;
+    QTest::newRow("code") << u"for (some code) {\n\n    do something\n\n}"_s << MessageComponentType::Code
+                          << u"```\nfor (some code) {\n    do something\n}\n```"_s;
+    QTest::newRow("quote") << u"\"this is a quote\""_s << MessageComponentType::Quote << u"> this is a quote"_s;
+    QTest::newRow("heading") << u"# heading\n\nnext line"_s << MessageComponentType::Text << u"# heading\n\nnext line"_s;
+}
+
+void BlockCacheTest::toStringTest()
+{
+    QFETCH(QString, inputString);
+    QFETCH(MessageComponentType::Type, itemType);
+    QFETCH(QString, outputstring);
+
+    Cache cache;
+    cache += CacheItem{
+        .type = itemType,
+        .content = QTextDocumentFragment::fromMarkdown(inputString),
+    };
+
+    QCOMPARE(cache.toString(), outputstring);
+}
+
+QTEST_MAIN(BlockCacheTest)
+#include "blockcachetest.moc"

src/libneochat/blockcache.cpp

@@ -53,7 +53,6 @@ inline QString trim(QString string)
 QString CacheItem::toString() const
 {
     auto newText = trim(content.toMarkdown(QTextDocument::MarkdownDialectGitHub));
-    newText.replace(QRegularExpression(u"(?<!\n)\n(?!\n)"_s), u" "_s);
     if (type == MessageComponentType::Quote) {
         newText = formatQuote(newText);
     } else if (type == MessageComponentType::Code) {