diff --git a/resources/desktop/com.github.rssguard.appdata.xml b/resources/desktop/com.github.rssguard.appdata.xml
index 7047e8696..ae9a30e06 100644
--- a/resources/desktop/com.github.rssguard.appdata.xml
+++ b/resources/desktop/com.github.rssguard.appdata.xml
@@ -30,7 +30,7 @@
   <url type="donation">https://martinrotter.github.io/donate/</url>
   <content_rating type="oars-1.1" />
   <releases>
-    <release version="3.9.2" date="2021-04-28"/>
+    <release version="3.9.0" date="2021-02-25"/>
   </releases>
   <content_rating type="oars-1.0">
     <content_attribute id="violence-cartoon">none</content_attribute>
diff --git a/src/librssguard/gui/dialogs/formmain.cpp b/src/librssguard/gui/dialogs/formmain.cpp
index bc5c4c9d7..1c1cafb44 100755
--- a/src/librssguard/gui/dialogs/formmain.cpp
+++ b/src/librssguard/gui/dialogs/formmain.cpp
@@ -34,7 +34,7 @@
 #include "services/owncloud/network/owncloudnetworkfactory.h"
 #include "services/standard/gui/formstandardimportexport.h"
 
-#if defined (USE_WEBENGINE)
+#if defined(USE_WEBENGINE)
 #include "network-web/adblock/adblockicon.h"
 #include "network-web/adblock/adblockmanager.h"
 #endif
@@ -62,7 +62,7 @@ FormMain::FormMain(QWidget* parent, Qt::WindowFlags f)
   setWindowIcon(qApp->desktopAwareIcon());
   setWindowTitle(APP_LONG_NAME);
 
-#if defined (USE_WEBENGINE)
+#if defined(USE_WEBENGINE)
   m_ui->m_menuWebBrowserTabs->addAction(qApp->web()->adBlock()->adBlockIcon());
   m_ui->m_menuWebBrowserTabs->addAction(qApp->web()->engineSettingsAction());
 #endif
@@ -204,7 +204,7 @@ QList<QAction*> FormMain::allActions() const {
 
 void FormMain::prepareMenus() {
   // Setup menu for tray icon.
-  if (SystemTrayIcon::isSystemTrayAvailable()) {
+  if (SystemTrayIcon::isSystemTrayAreaAvailable()) {
 #if defined(Q_OS_WIN)
     m_trayMenu = new TrayIconMenu(APP_NAME, this);
 #else
@@ -449,7 +449,7 @@ void FormMain::updateFeedButtonsAvailability() {
 
 void FormMain::switchVisibility(bool force_hide) {
   if (force_hide || isVisible()) {
-    if (SystemTrayIcon::isSystemTrayActivated()) {
+    if (SystemTrayIcon::isSystemTrayDesired() && SystemTrayIcon::isSystemTrayAreaAvailable()) {
       hide();
     }
     else {
@@ -813,7 +813,8 @@ void FormMain::changeEvent(QEvent* event) {
   switch (event->type()) {
     case QEvent::WindowStateChange: {
       if ((windowState() & Qt::WindowState::WindowMinimized) == Qt::WindowState::WindowMinimized &&
-          SystemTrayIcon::isSystemTrayActivated() &&
+          SystemTrayIcon::isSystemTrayDesired() &&
+          SystemTrayIcon::isSystemTrayAreaAvailable() &&
           qApp->settings()->value(GROUP(GUI), SETTING(GUI::HideMainWindowWhenMinimized)).toBool()) {
         event->ignore();
         QTimer::singleShot(CHANGE_EVENT_DELAY, this, [this]() {
diff --git a/src/librssguard/gui/dialogs/formmessagefiltersmanager.cpp b/src/librssguard/gui/dialogs/formmessagefiltersmanager.cpp
index ef7f2cf78..a1d0aed88 100644
--- a/src/librssguard/gui/dialogs/formmessagefiltersmanager.cpp
+++ b/src/librssguard/gui/dialogs/formmessagefiltersmanager.cpp
@@ -515,7 +515,7 @@ void FormMessageFiltersManager::beautifyScript() {
   proc_clang_format.setInputChannelMode(QProcess::InputChannelMode::ManagedInputChannel);
   proc_clang_format.setArguments({ "--assume-filename=script.js", "--style=Chromium" });
 
-#if defined (Q_OS_WIN)
+#if defined(Q_OS_WIN)
   proc_clang_format.setProgram(qApp->applicationDirPath() + QDir::separator() +
                                QSL("clang-format") + QDir::separator() +
                                QSL("clang-format.exe"));
diff --git a/src/librssguard/gui/guiutilities.cpp b/src/librssguard/gui/guiutilities.cpp
index 0e6df13e3..b470962ac 100644
--- a/src/librssguard/gui/guiutilities.cpp
+++ b/src/librssguard/gui/guiutilities.cpp
@@ -4,7 +4,7 @@
 
 #include "definitions/definitions.h"
 
-#if defined (Q_OS_ANDROID)
+#if defined(Q_OS_ANDROID)
 #include <QApplication>
 #include <QDesktopWidget>
 #include <QSize>
@@ -31,7 +31,7 @@ void GuiUtilities::applyDialogProperties(QWidget& widget, const QIcon& icon, con
 }
 
 void GuiUtilities::applyResponsiveDialogResize(QWidget& widget, double factor) {
-#if defined (Q_OS_ANDROID)
+#if defined(Q_OS_ANDROID)
   auto desktop_geom = QApplication::desktop()->screenGeometry();
   auto ratio = double(widget.size().height()) / widget.size().width();
   int widt = desktop_geom.width() * factor;
diff --git a/src/librssguard/gui/messagepreviewer.cpp b/src/librssguard/gui/messagepreviewer.cpp
index 4ca3ad866..27ebe6d17 100755
--- a/src/librssguard/gui/messagepreviewer.cpp
+++ b/src/librssguard/gui/messagepreviewer.cpp
@@ -13,7 +13,7 @@
 #include "services/abstract/labelsnode.h"
 #include "services/abstract/serviceroot.h"
 
-#if defined (USE_WEBENGINE)
+#if defined(USE_WEBENGINE)
 #include "gui/webbrowser.h"
 #include "gui/webviewer.h"
 #else
@@ -48,7 +48,7 @@ void MessagePreviewer::createConnections() {
 MessagePreviewer::MessagePreviewer(bool should_resize_to_fit, QWidget* parent)
   : QWidget(parent), m_layout(new QGridLayout(this)), m_toolBar(new QToolBar(this)), m_verticalScrollBarPosition(0.0),
   m_separator(nullptr), m_btnLabels(QList<QPair<LabelButton*, QAction*>>()) {
-#if defined (USE_WEBENGINE)
+#if defined(USE_WEBENGINE)
   m_txtMessage = new WebBrowser(this);
 
   if (should_resize_to_fit) {
@@ -82,14 +82,14 @@ void MessagePreviewer::reloadFontSettings() {
 void MessagePreviewer::setToolbarsVisible(bool visible) {
   m_toolBar->setVisible(visible);
 
-#if defined (USE_WEBENGINE)
+#if defined(USE_WEBENGINE)
   m_txtMessage->setNavigationBarVisible(visible);
 #endif
 
   qApp->settings()->setValue(GROUP(GUI), GUI::MessageViewerToolbarsVisible, visible);
 }
 
-#if defined (USE_WEBENGINE)
+#if defined(USE_WEBENGINE)
 
 WebBrowser* MessagePreviewer::webBrowser() const {
   return m_txtMessage;
diff --git a/src/librssguard/gui/messagepreviewer.h b/src/librssguard/gui/messagepreviewer.h
index ee89ff864..c71c62ff3 100644
--- a/src/librssguard/gui/messagepreviewer.h
+++ b/src/librssguard/gui/messagepreviewer.h
@@ -14,7 +14,7 @@
 class QGridLayout;
 class QToolBar;
 
-#if defined (USE_WEBENGINE)
+#if defined(USE_WEBENGINE)
 class WebBrowser;
 #else
 class MessageBrowser;
@@ -41,7 +41,7 @@ class MessagePreviewer : public QWidget {
 
     void reloadFontSettings();
 
-#if defined (USE_WEBENGINE)
+#if defined(USE_WEBENGINE)
     WebBrowser* webBrowser() const;
 #endif
 
@@ -72,7 +72,7 @@ class MessagePreviewer : public QWidget {
     QGridLayout* m_layout;
     QToolBar* m_toolBar;
 
-#if defined (USE_WEBENGINE)
+#if defined(USE_WEBENGINE)
     WebBrowser* m_txtMessage;
 #else
     MessageBrowser* m_txtMessage;
diff --git a/src/librssguard/gui/settings/settingsfeedsmessages.cpp b/src/librssguard/gui/settings/settingsfeedsmessages.cpp
index 75f105c49..09c66d53c 100644
--- a/src/librssguard/gui/settings/settingsfeedsmessages.cpp
+++ b/src/librssguard/gui/settings/settingsfeedsmessages.cpp
@@ -25,7 +25,7 @@ SettingsFeedsMessages::SettingsFeedsMessages(Settings* settings, QWidget* parent
   initializeMessageDateFormats();
   GuiUtilities::setLabelAsNotice(*m_ui->label_9, false);
 
-#if defined (USE_WEBENGINE)
+#if defined(USE_WEBENGINE)
   m_ui->m_tabMessages->layout()->removeWidget(m_ui->m_checkDisplayPlaceholders);
   m_ui->m_checkDisplayPlaceholders->hide();
 #else
diff --git a/src/librssguard/gui/settings/settingsgui.cpp b/src/librssguard/gui/settings/settingsgui.cpp
index 0750dacc5..ba5e6ffed 100755
--- a/src/librssguard/gui/settings/settingsgui.cpp
+++ b/src/librssguard/gui/settings/settingsgui.cpp
@@ -84,14 +84,11 @@ void SettingsGui::loadSettings() {
   onBeginLoadSettings();
 
   // Load settings of tray icon.
-  if (SystemTrayIcon::isSystemTrayAvailable()) {
-    m_ui->m_grpTray->setChecked(settings()->value(GROUP(GUI), SETTING(GUI::UseTrayIcon)).toBool());
-  }
+  m_ui->m_grpTray->setChecked(settings()->value(GROUP(GUI), SETTING(GUI::UseTrayIcon)).toBool());
 
-  // Tray icon is not supported on this machine.
-  else {
-    m_ui->m_grpTray->setTitle(m_ui->m_grpTray->title() + QL1C(' ') + tr("(Tray icon is not available.)"));
-    m_ui->m_grpTray->setChecked(false);
+  if (!SystemTrayIcon::isSystemTrayAreaAvailable()) {
+    m_ui->m_grpTray->setTitle(m_ui->m_grpTray->title() + QL1C(' ') + tr("(Your OS does not support tray icons at the moment.)"));
+    m_ui->m_grpTray->setEnabled(false);
   }
 
   m_ui->m_checkHidden->setChecked(settings()->value(GROUP(GUI), SETTING(GUI::MainWindowStartsHidden)).toBool());
@@ -200,7 +197,7 @@ void SettingsGui::saveSettings() {
                        m_ui->m_cmbToolbarButtonStyle->itemData(m_ui->m_cmbToolbarButtonStyle->currentIndex()));
 
   // Save tray icon.
-  if (SystemTrayIcon::isSystemTrayAvailable()) {
+  if (SystemTrayIcon::isSystemTrayAreaAvailable()) {
     settings()->setValue(GROUP(GUI), GUI::UseTrayIcon, m_ui->m_grpTray->isChecked());
 
     if (m_ui->m_grpTray->isChecked()) {
diff --git a/src/librssguard/gui/systemtrayicon.cpp b/src/librssguard/gui/systemtrayicon.cpp
index 113f11b27..840affac3 100644
--- a/src/librssguard/gui/systemtrayicon.cpp
+++ b/src/librssguard/gui/systemtrayicon.cpp
@@ -60,12 +60,12 @@ void SystemTrayIcon::onActivated(QSystemTrayIcon::ActivationReason reason) {
   }
 }
 
-bool SystemTrayIcon::isSystemTrayAvailable() {
+bool SystemTrayIcon::isSystemTrayAreaAvailable() {
   return QSystemTrayIcon::isSystemTrayAvailable() && QSystemTrayIcon::supportsMessages();
 }
 
-bool SystemTrayIcon::isSystemTrayActivated() {
-  return SystemTrayIcon::isSystemTrayAvailable() && qApp->settings()->value(GROUP(GUI), SETTING(GUI::UseTrayIcon)).toBool();
+bool SystemTrayIcon::isSystemTrayDesired() {
+  return qApp->settings()->value(GROUP(GUI), SETTING(GUI::UseTrayIcon)).toBool();
 }
 
 bool SystemTrayIcon::areNotificationsEnabled() {
@@ -92,8 +92,8 @@ void SystemTrayIcon::show() {
   showPrivate();
 #else
   // Delay avoids race conditions and tray icon is properly displayed.
-  qDebugNN << LOGSEC_GUI << "Showing tray icon with 1000 ms delay.";
-  QTimer::singleShot(1000, this, &SystemTrayIcon::showPrivate);
+  qDebugNN << LOGSEC_GUI << "Showing tray icon with 3000 ms delay.";
+  QTimer::singleShot(3000, this, &SystemTrayIcon::showPrivate);
 #endif
 }
 
diff --git a/src/librssguard/gui/systemtrayicon.h b/src/librssguard/gui/systemtrayicon.h
index fa4d92ef8..161bf7b91 100644
--- a/src/librssguard/gui/systemtrayicon.h
+++ b/src/librssguard/gui/systemtrayicon.h
@@ -46,12 +46,11 @@ class SystemTrayIcon : public QSystemTrayIcon {
     void showMessage(const QString& title, const QString& message, MessageIcon icon = Information,
                      int milliseconds_timeout_hint = TRAY_ICON_BUBBLE_TIMEOUT, std::function<void()> functor = nullptr);
 
-    // Returns true if tray icon CAN be constructed on this machine.
-    static bool isSystemTrayAvailable();
+    // Returns true if tray area is available and icon can be displayed.
+    static bool isSystemTrayAreaAvailable();
 
-    // Returns true if tray icon CAN be costructed and IS enabled in
-    // application settings.
-    static bool isSystemTrayActivated();
+    // Returns true if user wants to have tray icon displayed.
+    static bool isSystemTrayDesired();
 
     // Determines whether balloon tips are enabled or not on tray icons.
     static bool areNotificationsEnabled();
diff --git a/src/librssguard/gui/tabwidget.cpp b/src/librssguard/gui/tabwidget.cpp
index 9582b3e60..e3043f5c4 100644
--- a/src/librssguard/gui/tabwidget.cpp
+++ b/src/librssguard/gui/tabwidget.cpp
@@ -221,7 +221,7 @@ int TabWidget::addBrowser(bool move_after_current, bool make_active, const QUrl&
   int final_index;
   QString browser_tab_name = tr("Web browser");
 
-#if defined (Q_OS_MACOSOS)
+#if defined(Q_OS_MACOSOS)
   browser_tab_name = browser_tab_name.prepend(QSL("  "));
 #endif
 
@@ -283,7 +283,7 @@ void TabWidget::gotoPreviousTab() {
 }
 
 void TabWidget::indentTabText(int index) {
-#if defined (Q_OS_MACOSOS)
+#if defined(Q_OS_MACOSOS)
   if (tabBar()->tabType(index) != TabBar::FeedReader && !tabIcon(index).isNull()) {
     // We have closable tab with some icon, fix the title.
     const QString text = tabText(index);
diff --git a/src/librssguard/miscellaneous/application.cpp b/src/librssguard/miscellaneous/application.cpp
index 6f9c32a93..41dfd9a4d 100755
--- a/src/librssguard/miscellaneous/application.cpp
+++ b/src/librssguard/miscellaneous/application.cpp
@@ -26,6 +26,7 @@
 
 #include <QProcess>
 #include <QSessionManager>
+#include <QTimer>
 
 #if defined(USE_WEBENGINE)
 #include "network-web/adblock/adblockicon.h"
@@ -122,7 +123,9 @@ void Application::reactOnForeignNotifications() {
 
 void Application::hideOrShowMainForm() {
   // Display main window.
-  if (qApp->settings()->value(GROUP(GUI), SETTING(GUI::MainWindowStartsHidden)).toBool() && SystemTrayIcon::isSystemTrayActivated()) {
+  if (qApp->settings()->value(GROUP(GUI), SETTING(GUI::MainWindowStartsHidden)).toBool() &&
+      SystemTrayIcon::isSystemTrayDesired() &&
+      SystemTrayIcon::isSystemTrayAreaAvailable()) {
     qDebugNN << LOGSEC_CORE << "Hiding the main window when the application is starting.";
     mainForm()->switchVisibility(true);
   }
@@ -158,7 +161,7 @@ bool Application::isAlreadyRunning() {
       : sendMessage((QStringList() << APP_IS_RUNNING << Application::arguments().mid(1)).join(ARGUMENTS_LIST_SEPARATOR));
 }
 
-FeedReader* Application::feedReader() {
+FeedReader* Application:: feedReader() {
   return m_feedReader;
 }
 
@@ -280,7 +283,7 @@ QString Application::userDataHomeFolder() const {
     return home_folder;
   }
   else {
-#if defined (Q_OS_ANDROID)
+#if defined(Q_OS_ANDROID)
     return IOFactory::getSystemFolder(QStandardPaths::GenericDataLocation) + QDir::separator() + QSL(APP_NAME);
 #else
     return configFolder() + QDir::separator() + QSL(APP_NAME);
@@ -297,7 +300,7 @@ QString Application::documentsFolder() const {
 }
 
 QString Application::homeFolder() const {
-#if defined (Q_OS_ANDROID)
+#if defined(Q_OS_ANDROID)
   return IOFactory::getSystemFolder(QStandardPaths::GenericDataLocation);
 #else
   return IOFactory::getSystemFolder(QStandardPaths::HomeLocation);
@@ -412,8 +415,15 @@ QIcon Application::desktopAwareIcon() const {
 
 void Application::showTrayIcon() {
   // Display tray icon if it is enabled and available.
-  if (SystemTrayIcon::isSystemTrayActivated()) {
-    qDebugNN << LOGSEC_CORE << "Showing tray icon.";
+  if (SystemTrayIcon::isSystemTrayDesired()) {
+#if !defined(Q_OS_LINUX)
+    if (!SystemTrayIcon::isSystemTrayAreaAvailable()) {
+      qWarningNN << LOGSEC_GUI << "Tray icon area is not available.";
+      return;
+    }
+#endif
+
+    qDebugNN << LOGSEC_GUI << "Showing tray icon.";
     trayIcon()->show();
   }
 }
@@ -433,7 +443,9 @@ void Application::deleteTrayIcon() {
 void Application::showGuiMessage(const QString& title, const QString& message,
                                  QSystemTrayIcon::MessageIcon message_type, QWidget* parent,
                                  bool show_at_least_msgbox, std::function<void()> functor) {
-  if (SystemTrayIcon::areNotificationsEnabled() && SystemTrayIcon::isSystemTrayActivated()) {
+  if (SystemTrayIcon::areNotificationsEnabled() &&
+      SystemTrayIcon::isSystemTrayDesired() &&
+      SystemTrayIcon::isSystemTrayAreaAvailable()) {
     trayIcon()->showMessage(title, message, message_type, TRAY_ICON_BUBBLE_TIMEOUT, std::move(functor));
   }
   else if (show_at_least_msgbox) {
diff --git a/src/librssguard/miscellaneous/databasequeries.cpp b/src/librssguard/miscellaneous/databasequeries.cpp
index 20fafdf9d..326f2c7f9 100755
--- a/src/librssguard/miscellaneous/databasequeries.cpp
+++ b/src/librssguard/miscellaneous/databasequeries.cpp
@@ -2637,7 +2637,7 @@ QList<ServiceRoot*> DatabaseQueries::getFeedlyAccounts(const QSqlDatabase& db, b
       root->network()->setUsername(query.value(1).toString());
       root->network()->setDeveloperAccessToken(query.value(2).toString());
 
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
       root->network()->oauth()->setRefreshToken(query.value(3).toString());
 #endif
 
diff --git a/src/librssguard/miscellaneous/settings.cpp b/src/librssguard/miscellaneous/settings.cpp
index a88c11dec..151fa32d5 100755
--- a/src/librssguard/miscellaneous/settings.cpp
+++ b/src/librssguard/miscellaneous/settings.cpp
@@ -9,7 +9,7 @@
 #include <QLocale>
 #include <QPointer>
 
-#if defined (USE_WEBENGINE)
+#if defined(USE_WEBENGINE)
 
 // WebEngine.
 DKEY WebEngineAttributes::ID = "web_engine_attributes";
@@ -425,7 +425,7 @@ SettingsProperties Settings::determineProperties() {
   else {
     // We will use PORTABLE settings only and only if it is available and NON-PORTABLE
     // settings was not initialized before.
-#if defined (Q_OS_LINUX) || defined (Q_OS_ANDROID) || defined (Q_OS_MACOSOS)
+#if defined(Q_OS_LINUX) || defined (Q_OS_ANDROID) || defined (Q_OS_MACOSOS)
     // DO NOT use portable settings for Linux, it is really not used on that platform.
     const bool will_we_use_portable_settings = false;
 #else
diff --git a/src/librssguard/miscellaneous/settings.h b/src/librssguard/miscellaneous/settings.h
index 4227e1c74..befe1320d 100644
--- a/src/librssguard/miscellaneous/settings.h
+++ b/src/librssguard/miscellaneous/settings.h
@@ -26,7 +26,7 @@
 #define DEFAULT_VALUE(x) x ## Def
 #define GROUP(x) x::ID
 
-#if defined (USE_WEBENGINE)
+#if defined(USE_WEBENGINE)
 namespace WebEngineAttributes {
   KEY ID;
 }
diff --git a/src/librssguard/network-web/webfactory.cpp b/src/librssguard/network-web/webfactory.cpp
index b3eaaae3b..20f388cc5 100644
--- a/src/librssguard/network-web/webfactory.cpp
+++ b/src/librssguard/network-web/webfactory.cpp
@@ -25,7 +25,7 @@
 
 WebFactory::WebFactory(QObject* parent)
   : QObject(parent) {
-#if defined (USE_WEBENGINE)
+#if defined(USE_WEBENGINE)
   m_engineSettings = nullptr;
   m_adBlock = new AdBlockManager(this);
   m_urlInterceptor = new NetworkUrlInterceptor(this);
@@ -41,7 +41,7 @@ WebFactory::WebFactory(QObject* parent)
 }
 
 WebFactory::~WebFactory() {
-#if defined (USE_WEBENGINE)
+#if defined(USE_WEBENGINE)
   if (m_engineSettings != nullptr && m_engineSettings->menu() != nullptr) {
     m_engineSettings->menu()->deleteLater();
   }
@@ -222,7 +222,7 @@ void WebFactory::updateProxy() {
   }
 }
 
-#if defined (USE_WEBENGINE)
+#if defined(USE_WEBENGINE)
 AdBlockManager* WebFactory::adBlock() {
   return m_adBlock;
 }
diff --git a/src/librssguard/network-web/webfactory.h b/src/librssguard/network-web/webfactory.h
index a2ab33d38..0d80fc1e8 100644
--- a/src/librssguard/network-web/webfactory.h
+++ b/src/librssguard/network-web/webfactory.h
@@ -9,11 +9,11 @@
 
 #include <QMap>
 
-#if defined (USE_WEBENGINE)
+#if defined(USE_WEBENGINE)
 #include <QWebEngineSettings>
 #endif
 
-#if defined (USE_WEBENGINE)
+#if defined(USE_WEBENGINE)
 class QMenu;
 class AdBlockManager;
 class NetworkUrlInterceptor;
@@ -35,7 +35,7 @@ class WebFactory : public QObject {
     //   ∀ = &forall; (entity name), &#8704; (base-10 entity), &#x2200; (base-16 entity)
     QString unescapeHtml(const QString& html);
 
-#if defined (USE_WEBENGINE)
+#if defined(USE_WEBENGINE)
     QAction* engineSettingsAction();
     AdBlockManager* adBlock();
     NetworkUrlInterceptor* urlIinterceptor();
@@ -46,7 +46,7 @@ class WebFactory : public QObject {
     bool openUrlInExternalBrowser(const QString& url) const;
     bool sendMessageViaEmail(const Message& message);
 
-#if defined (USE_WEBENGINE)
+#if defined(USE_WEBENGINE)
   private slots:
     void createMenu(QMenu* menu = nullptr);
     void webEngineSettingChanged(bool enabled);
diff --git a/src/librssguard/services/feedly/feedlynetwork.cpp b/src/librssguard/services/feedly/feedlynetwork.cpp
index 4bf1dab59..73f384ab2 100755
--- a/src/librssguard/services/feedly/feedlynetwork.cpp
+++ b/src/librssguard/services/feedly/feedlynetwork.cpp
@@ -16,7 +16,7 @@
 #include "services/feedly/feedlyfeed.h"
 #include "services/feedly/feedlyserviceroot.h"
 
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
 #include "network-web/oauth2service.h"
 #endif
 
@@ -26,7 +26,7 @@
 
 FeedlyNetwork::FeedlyNetwork(QObject* parent)
   : QObject(parent), m_service(nullptr),
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
   m_oauth(new OAuth2Service(QSL(FEEDLY_API_URL_BASE) + FEEDLY_API_URL_AUTH,
                             QSL(FEEDLY_API_URL_BASE) + FEEDLY_API_URL_TOKEN,
                             FEEDLY_CLIENT_ID,
@@ -36,7 +36,7 @@ FeedlyNetwork::FeedlyNetwork(QObject* parent)
   m_username(QString()),
   m_developerAccessToken(QString()), m_batchSize(FEEDLY_DEFAULT_BATCH_SIZE), m_downloadOnlyUnreadMessages(false) {
 
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
   m_oauth->setRedirectUrl(QString(OAUTH_REDIRECT_URI) + QL1C(':') + QString::number(FEEDLY_API_REDIRECT_URI_PORT));
 
   connect(m_oauth, &OAuth2Service::tokensRetrieveError, this, &FeedlyNetwork::onTokensError);
@@ -490,7 +490,7 @@ void FeedlyNetwork::setBatchSize(int batch_size) {
   m_batchSize = batch_size;
 }
 
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
 
 void FeedlyNetwork::onTokensError(const QString& error, const QString& error_description) {
   Q_UNUSED(error)
@@ -561,7 +561,7 @@ QString FeedlyNetwork::fullUrl(FeedlyNetwork::Service service) const {
 }
 
 QString FeedlyNetwork::bearer() const {
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
   if (m_developerAccessToken.simplified().isEmpty()) {
     return m_oauth->bearer().toLocal8Bit();
   }
diff --git a/src/librssguard/services/feedly/feedlynetwork.h b/src/librssguard/services/feedly/feedlynetwork.h
index a565f4ee2..c18102f05 100755
--- a/src/librssguard/services/feedly/feedlynetwork.h
+++ b/src/librssguard/services/feedly/feedlynetwork.h
@@ -8,7 +8,7 @@
 #include "network-web/networkfactory.h"
 #include "services/abstract/feed.h"
 
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
 class OAuth2Service;
 #endif
 
@@ -44,7 +44,7 @@ class FeedlyNetwork : public QObject {
 
     void setService(FeedlyServiceRoot* service);
 
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
     OAuth2Service* oauth() const;
     void setOauth(OAuth2Service* oauth);
 
@@ -73,7 +73,7 @@ class FeedlyNetwork : public QObject {
   private:
     FeedlyServiceRoot* m_service;
 
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
     OAuth2Service* m_oauth;
 #endif
 
diff --git a/src/librssguard/services/feedly/feedlyserviceroot.cpp b/src/librssguard/services/feedly/feedlyserviceroot.cpp
index 95e9eedef..4555c7a67 100755
--- a/src/librssguard/services/feedly/feedlyserviceroot.cpp
+++ b/src/librssguard/services/feedly/feedlyserviceroot.cpp
@@ -19,7 +19,7 @@
 #include "services/feedly/feedlynetwork.h"
 #include "services/feedly/gui/formeditfeedlyaccount.h"
 
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
 #include "network-web/oauth2service.h"
 #endif
 
@@ -205,7 +205,7 @@ void FeedlyServiceRoot::saveAccountDataToDatabase(bool creating_new) {
     if (DatabaseQueries::overwriteFeedlyAccount(database,
                                                 m_network->username(),
                                                 m_network->developerAccessToken(),
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
                                                 m_network->oauth()->refreshToken(),
 #else
                                                 {},
@@ -221,7 +221,7 @@ void FeedlyServiceRoot::saveAccountDataToDatabase(bool creating_new) {
     if (DatabaseQueries::createFeedlyAccount(database,
                                              m_network->username(),
                                              m_network->developerAccessToken(),
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
                                              m_network->oauth()->refreshToken(),
 #else
                                              {},
diff --git a/src/librssguard/services/feedly/gui/feedlyaccountdetails.cpp b/src/librssguard/services/feedly/gui/feedlyaccountdetails.cpp
index 3ea3bd7fd..dd153502d 100755
--- a/src/librssguard/services/feedly/gui/feedlyaccountdetails.cpp
+++ b/src/librssguard/services/feedly/gui/feedlyaccountdetails.cpp
@@ -81,7 +81,7 @@ FeedlyAccountDetails::FeedlyAccountDetails(QWidget* parent) : QWidget(parent) {
   onDeveloperAccessTokenChanged();
   onUsernameChanged();
 
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
   hookNetwork();
 #endif
 }
@@ -90,7 +90,7 @@ void FeedlyAccountDetails::getDeveloperAccessToken() {
   qApp->web()->openUrlInExternalBrowser(FEEDLY_GENERATE_DAT);
 }
 
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
 
 void FeedlyAccountDetails::hookNetwork() {
   connect(m_oauth, &OAuth2Service::tokensRetrieved, this, &FeedlyAccountDetails::onAuthGranted);
@@ -121,7 +121,7 @@ void FeedlyAccountDetails::onAuthGranted() {
 #endif
 
 void FeedlyAccountDetails::performTest(const QNetworkProxy& custom_proxy) {
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
   m_oauth->logout(false);
 
   if (m_ui.m_txtDeveloperAccessToken->lineEdit()->text().simplified().isEmpty()) {
@@ -168,7 +168,7 @@ void FeedlyAccountDetails::onDeveloperAccessTokenChanged() {
   const QString token = m_ui.m_txtDeveloperAccessToken->lineEdit()->text();
 
   if (token.isEmpty()) {
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
     WidgetWithStatus::StatusType stat = WidgetWithStatus::StatusType::Ok;
 #else
     WidgetWithStatus::StatusType stat = WidgetWithStatus::StatusType::Error;
diff --git a/src/librssguard/services/feedly/gui/feedlyaccountdetails.h b/src/librssguard/services/feedly/gui/feedlyaccountdetails.h
index faa6e7c42..26a19e604 100755
--- a/src/librssguard/services/feedly/gui/feedlyaccountdetails.h
+++ b/src/librssguard/services/feedly/gui/feedlyaccountdetails.h
@@ -11,7 +11,7 @@
 
 #include <QNetworkProxy>
 
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
 class OAuth2Service;
 #endif
 
@@ -29,7 +29,7 @@ class FeedlyAccountDetails : public QWidget {
     void onUsernameChanged();
     void onDeveloperAccessTokenChanged();
 
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
   private slots:
     void onAuthFailed();
     void onAuthError(const QString& error, const QString& detailed_description);
@@ -42,7 +42,7 @@ class FeedlyAccountDetails : public QWidget {
   private:
     Ui::FeedlyAccountDetails m_ui;
 
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
     OAuth2Service* m_oauth;
 #endif
 };
diff --git a/src/librssguard/services/feedly/gui/formeditfeedlyaccount.cpp b/src/librssguard/services/feedly/gui/formeditfeedlyaccount.cpp
index 2d83a9a0c..5e8a1d6e2 100755
--- a/src/librssguard/services/feedly/gui/formeditfeedlyaccount.cpp
+++ b/src/librssguard/services/feedly/gui/formeditfeedlyaccount.cpp
@@ -10,7 +10,7 @@
 #include "services/feedly/feedlyserviceroot.h"
 #include "services/feedly/gui/feedlyaccountdetails.h"
 
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
 #include "network-web/oauth2service.h"
 #endif
 
@@ -26,7 +26,7 @@ FormEditFeedlyAccount::FormEditFeedlyAccount(QWidget* parent)
 void FormEditFeedlyAccount::apply() {
   bool editing_account = !applyInternal<FeedlyServiceRoot>();
 
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
   if (!editing_account) {
     // We transfer refresh token to avoid the need to login once more,
     // then we delete testing OAuth service.
@@ -60,7 +60,7 @@ void FormEditFeedlyAccount::apply() {
 void FormEditFeedlyAccount::setEditableAccount(ServiceRoot* editable_account) {
   FormAccountDetails::setEditableAccount(editable_account);
 
-#if defined (FEEDLY_OFFICIAL_SUPPORT)
+#if defined(FEEDLY_OFFICIAL_SUPPORT)
   if (m_details->m_oauth != nullptr) {
     // We will use live OAuth service for testing.
     m_details->m_oauth->logout(true);
diff --git a/src/rssguard/main.cpp b/src/rssguard/main.cpp
index 3925b2122..5759d0bdc 100755
--- a/src/rssguard/main.cpp
+++ b/src/rssguard/main.cpp
@@ -12,7 +12,7 @@
 #include <QtPlatformHeaders/QWindowsWindowFunctions>
 #endif
 
-#if defined (Q_OS_MACOS)
+#if defined(Q_OS_MACOS)
 extern void disableWindowTabbing();
 
 #endif
@@ -25,14 +25,14 @@ int main(int argc, char* argv[]) {
   QApplication::setAttribute(Qt::ApplicationAttribute::AA_EnableHighDpiScaling);
 #endif
 
-#if defined (Q_OS_LINUX)
+#if defined(Q_OS_LINUX)
   QApplication::setDesktopFileName(APP_DESKTOP_ENTRY_FILE);
 #endif
 
   // Ensure that ini format is used as application settings storage on Mac OS.
   QSettings::setDefaultFormat(QSettings::IniFormat);
 
-#if defined (Q_OS_MACOS)
+#if defined(Q_OS_MACOS)
   QApplication::setAttribute(Qt::AA_DontShowIconsInMenus);
   disableWindowTabbing();
 #endif