Strip replies when calling EventHandler::getMarkdownBody()

This matches previous behavior before
e2eb6ab33c and including the markdown
blockquote breaks edits. This also adds a test to ensure it does indeed
get stripped.

autotests/eventhandlertest.cpp

@@ -56,6 +56,7 @@ private Q_SLOTS:
     void genericBody();
     void nullGenericBody();
     void markdownBody();
+    void markdownBodyReply();
     void subtitle();
     void nullSubtitle();
     void mediaInfo();
@@ -301,6 +302,13 @@ void EventHandlerTest::markdownBody()
     QCOMPARE(eventHandler.getMarkdownBody(), QStringLiteral("This is an example\ntext message"));
 }
 
+void EventHandlerTest::markdownBodyReply()
+{
+    EventHandler eventHandler(room, room->messageEvents().at(5).get());
+
+    QCOMPARE(eventHandler.getMarkdownBody(), QStringLiteral("reply"));
+}
+
 void EventHandlerTest::subtitle()
 {
     EventHandler eventHandler(room, room->messageEvents().at(0).get());

src/eventhandler.cpp

@@ -293,7 +293,10 @@ QString EventHandler::getMarkdownBody() const
     }
 
     const auto roomMessageEvent = eventCast<const RoomMessageEvent>(m_event);
-    return roomMessageEvent->plainBody();
+
+    QString plainBody = roomMessageEvent->plainBody();
+    plainBody.remove(TextRegex::removeReply);
+    return plainBody;
 }
 
 QString EventHandler::getBody(const Quotient::RoomEvent *event, Qt::TextFormat format, bool stripNewlines) const