diff --git a/.clang-tidy b/.clang-tidy
index 2ef34ab55..6b2fd3721 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -27,6 +27,7 @@ Checks: >
   -google-readability-casting,
   -hicpp-deprecated-headers,
   -misc-const-correctness,
+  -misc-include-cleaner,
   -misc-non-private-member-variables-in-classes,
   -modernize-avoid-c-arrays,
   -modernize-deprecated-headers,
diff --git a/.github/workflows/PR-check-cmake.yml b/.github/workflows/PR-check-cmake.yml
index f2614626b..b42bc7943 100644
--- a/.github/workflows/PR-check-cmake.yml
+++ b/.github/workflows/PR-check-cmake.yml
@@ -45,7 +45,7 @@ jobs:
           cmake --build ./build_dir 
   job_macos_build_check:
     name: macos Build and analyze
-    runs-on: macos-12
+    runs-on: macos-13
     steps:             
       - uses: actions/checkout@v4
         with:
diff --git a/.github/workflows/release-macos-homebrew.yml b/.github/workflows/release-macos-homebrew.yml
index dea137b92..ab6907d2e 100644
--- a/.github/workflows/release-macos-homebrew.yml
+++ b/.github/workflows/release-macos-homebrew.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [macos-12,macos-14]
+        os: [macos-13,macos-14]
         qt_ver: [ 6.7.3,6.6.3 ]
         qt_arch: [clang_64]
     env:
diff --git a/src/config.cc b/src/config.cc
index 045d8130a..c523d83a4 100644
--- a/src/config.cc
+++ b/src/config.cc
@@ -1157,8 +1157,10 @@ Class load()
 
   c.showingDictBarNames = ( root.namedItem( "showingDictBarNames" ).toElement().text() == "1" );
 
-  c.usingToolbarsIconSize =
-    ( static_cast< ToolbarsIconSize >( root.namedItem( "usingToolbarsIconSize" ).toElement().text().toInt() ) );
+  QDomNode usingToolbarsIconSize = root.namedItem( "usingToolbarsIconSize" );
+  if ( !usingToolbarsIconSize.isNull() ) {
+    c.usingToolbarsIconSize = static_cast< ToolbarsIconSize >( usingToolbarsIconSize.toElement().text().toInt() );
+  }
 
   if ( !root.namedItem( "historyExportPath" ).isNull() )
     c.historyExportPath = root.namedItem( "historyExportPath" ).toElement().text();
@@ -1169,9 +1171,6 @@ Class load()
   if ( !root.namedItem( "articleSavePath" ).isNull() )
     c.articleSavePath = root.namedItem( "articleSavePath" ).toElement().text();
 
-  if ( !root.namedItem( "editDictionaryCommandLine" ).isNull() )
-    c.editDictionaryCommandLine = root.namedItem( "editDictionaryCommandLine" ).toElement().text();
-
   if ( !root.namedItem( "maxHeadwordSize" ).isNull() ) {
     unsigned int value = root.namedItem( "maxHeadwordSize" ).toElement().text().toUInt();
     if ( value != 0 ) // 0 is invalid value for our purposes
@@ -2174,10 +2173,6 @@ void save( Class const & c )
       root.appendChild( opt );
     }
 
-    opt = dd.createElement( "editDictionaryCommandLine" );
-    opt.appendChild( dd.createTextNode( c.editDictionaryCommandLine ) );
-    root.appendChild( opt );
-
     opt = dd.createElement( "maxHeadwordSize" );
     opt.appendChild( dd.createTextNode( QString::number( c.maxHeadwordSize ) ) );
     root.appendChild( opt );
diff --git a/src/config.hh b/src/config.hh
index 6c870fb17..2dc1568c4 100644
--- a/src/config.hh
+++ b/src/config.hh
@@ -885,8 +885,6 @@ struct Class
 
   HeadwordsDialog headwordsDialog;
 
-  QString editDictionaryCommandLine; // Command line to call external editor for dictionary
-
   Class():
     lastMainGroupId( 0 ),
     lastPopupGroupId( 0 ),
diff --git a/src/dict/dictdfiles.cc b/src/dict/dictdfiles.cc
index 2199d8a17..b7869dc27 100644
--- a/src/dict/dictdfiles.cc
+++ b/src/dict/dictdfiles.cc
@@ -426,8 +426,7 @@ QString const & DictdDictionary::getDescription()
   sptr< Dictionary::DataRequest > req = getArticle( U"00databaseinfo", vector< wstring >(), wstring(), false );
 
   if ( req->dataSize() > 0 ) {
-    dictionaryDescription = Html::unescape( QString::fromUtf8( req->getFullData().data(), req->getFullData().size() ),
-                                            Html::HtmlOption::Keep );
+    dictionaryDescription = QString::fromUtf8( req->getFullData().data(), req->getFullData().size() );
   }
   else {
     dictionaryDescription = "NONE";
diff --git a/src/dict/dictionary.cc b/src/dict/dictionary.cc
index 1cd646f87..2e3f6fbd4 100644
--- a/src/dict/dictionary.cc
+++ b/src/dict/dictionary.cc
@@ -516,7 +516,8 @@ string makeDictionaryId( vector< string > const & dictionaryFiles ) noexcept
   QCryptographicHash hash( QCryptographicHash::Md5 );
 
   for ( const auto & i : sortedList ) {
-    hash.addData( i.c_str(), i.size() + 1 );
+    // Note: a null byte at the end is a must
+    hash.addData( { i.c_str(), static_cast< qsizetype >( i.size() + 1 ) } );
   }
 
   return hash.result().toHex().data();
diff --git a/src/dict/dsl_details.cc b/src/dict/dsl_details.cc
index c09eb8e14..3c1976915 100644
--- a/src/dict/dsl_details.cc
+++ b/src/dict/dsl_details.cc
@@ -807,7 +807,7 @@ bool ArticleDom::atSignFirstInLine()
 /////////////// DslScanner
 
 DslScanner::DslScanner( string const & fileName ):
-  encoding( Utf8::Windows1252 ),
+  encoding( Utf8::Utf8 ),
   readBufferPtr( readBuffer ),
   readBufferLeft( 0 ),
   linesRead( 0 )
@@ -819,11 +819,12 @@ DslScanner::DslScanner( string const & fileName ):
   if ( !f )
     throw exCantOpen( fileName );
 
-  // Now try guessing the encoding by reading the first two bytes
+  // Now try guessing the encoding
 
-  unsigned char firstBytes[ 50 ];
+  constexpr size_t firstBytesSize = 50;
+  unsigned char firstBytes[ firstBytesSize ];
 
-  if ( gzread( f, firstBytes, sizeof( firstBytes ) ) != sizeof( firstBytes ) ) {
+  if ( gzread( f, firstBytes, firstBytesSize ) != firstBytesSize ) {
     // Apparently the file's too short
     gzclose( f );
     throw exMalformedDslFile( fileName );
@@ -831,37 +832,33 @@ DslScanner::DslScanner( string const & fileName ):
 
   bool needExactEncoding = false;
 
-  QByteArray ba = QByteArray::fromRawData( (const char *)firstBytes, 50 );
-  codec         = QTextCodec::codecForUtfText( ba, nullptr );
-  if ( !codec ) {
-    // the encoding has no bom.
-    // check the first char # (0x23).
-    auto hashTag = 0x0023;
-
-    auto uci = qFromUnaligned< uint32_t >( firstBytes );
-    if ( uci == qToBigEndian( hashTag ) ) {
-      codec = QTextCodec::codecForMib( 1018 ); // utf-32 be
-    }
-    else if ( uci == qToLittleEndian( hashTag ) ) {
-      codec = QTextCodec::codecForMib( 1019 ); // utf-32 le
-    }
-    else {
-      auto uc = qFromUnaligned< uint16_t >( firstBytes );
-      if ( uc == qToBigEndian( uint16_t( hashTag ) ) ) {
-        codec = QTextCodec::codecForMib( 1013 ); // utf16 be
-      }
-      else if ( uc == qToLittleEndian( uint16_t( hashTag ) ) ) {
-        codec = QTextCodec::codecForMib( 1014 ); // utf16 le
-      }
-      else {
-        //default encoding
-        codec = QTextCodec::codecForName( "UTF-8" );
-      }
+  // Note that .dsl format always starts with "#NAME"
+  if ( auto guessedEncoding = QStringConverter::encodingForData( { firstBytes, firstBytesSize }, '#' );
+       guessedEncoding.has_value() ) {
+    switch ( guessedEncoding.value() ) {
+      case QStringConverter::Utf8:
+        encoding = Utf8::Utf8;
+        break;
+      case QStringConverter::Utf16LE:
+        encoding = Utf8::Utf16LE;
+        break;
+      case QStringConverter::Utf16BE:
+        encoding = Utf8::Utf16BE;
+        break;
+      case QStringConverter::Utf32LE:
+        encoding = Utf8::Utf16LE;
+        break;
+      case QStringConverter::Utf32BE:
+        encoding = Utf8::Utf32BE;
+        break;
+      default:
+        break;
     }
   }
 
-  encoding = Utf8::getEncodingForName( codec->name() );
-  qDebug() << codec->name();
+  codec = QTextCodec::codecForName( getEncodingNameFor( encoding ) );
+
+  qDebug() << "DSL encoding ->" << codec->name();
 
   if ( gzrewind( f ) ) {
     gzclose( f );
diff --git a/src/ui/articleview.cc b/src/ui/articleview.cc
index 45722dce1..0a99ad6f2 100644
--- a/src/ui/articleview.cc
+++ b/src/ui/articleview.cc
@@ -1389,7 +1389,7 @@ void ArticleView::playSound()
         return link;})();         )";
 
   webview->page()->runJavaScript( variable, [ this ]( const QVariant & result ) {
-    if ( result.type() == QVariant::String ) {
+    if ( result.typeId() == qMetaTypeId< QString >() ) {
       QString soundScript = result.toString();
       if ( !soundScript.isEmpty() )
         openLink( QUrl::fromEncoded( soundScript.toUtf8() ), webview->url() );
diff --git a/src/ui/dictinfo.cc b/src/ui/dictinfo.cc
index 73b06cf63..5b0490522 100644
--- a/src/ui/dictinfo.cc
+++ b/src/ui/dictinfo.cc
@@ -27,9 +27,6 @@ void DictInfo::showInfo( sptr< Dictionary::Class > dict )
   ui.dictionaryTranslatesTo->setText( Language::localizedStringForId( dict->getLangTo() ) );
 
   ui.openFolder->setVisible( dict->isLocalDictionary() );
-  ui.editDictionary->setVisible( dict->isLocalDictionary() && !dict->getMainFilename().isEmpty()
-                                 && !cfg.editDictionaryCommandLine.isEmpty() );
-  ui.editDictionary->setToolTip( tr( "Edit the dictionary via command:\n%1" ).arg( cfg.editDictionaryCommandLine ) );
 
   if ( dict->getWordCount() == 0 )
     ui.headwordsButton->setVisible( false );
@@ -63,11 +60,6 @@ void DictInfo::savePos( int )
   cfg.dictInfoGeometry = saveGeometry();
 }
 
-void DictInfo::on_editDictionary_clicked()
-{
-  done( EDIT_DICTIONARY );
-}
-
 void DictInfo::on_openFolder_clicked()
 {
   done( OPEN_FOLDER );
diff --git a/src/ui/dictinfo.hh b/src/ui/dictinfo.hh
index 74a15b6af..13a7e205e 100644
--- a/src/ui/dictinfo.hh
+++ b/src/ui/dictinfo.hh
@@ -16,7 +16,6 @@ public:
     REJECTED,
     ACCEPTED,
     OPEN_FOLDER,
-    EDIT_DICTIONARY,
     SHOW_HEADWORDS
   };
 
@@ -28,7 +27,6 @@ private:
   Config::Class & cfg;
 private slots:
   void savePos( int );
-  void on_editDictionary_clicked();
   void on_openFolder_clicked();
   void on_OKButton_clicked();
   void on_headwordsButton_clicked();
diff --git a/src/ui/dictinfo.ui b/src/ui/dictinfo.ui
index 1e73f5dd4..d799a6f9b 100644
--- a/src/ui/dictinfo.ui
+++ b/src/ui/dictinfo.ui
@@ -23,16 +23,6 @@
       <string/>
      </property>
      <layout class="QGridLayout" name="gridLayout">
-      <item row="1" column="4">
-       <widget class="QPushButton" name="editDictionary">
-        <property name="enabled">
-         <bool>true</bool>
-        </property>
-        <property name="text">
-         <string>Edit dictionary</string>
-        </property>
-       </widget>
-      </item>
       <item row="1" column="3">
        <widget class="QLabel" name="dictionaryTranslatesTo">
         <property name="text">
diff --git a/src/ui/dictionarybar.cc b/src/ui/dictionarybar.cc
index 52bd13d71..1230fada9 100644
--- a/src/ui/dictionarybar.cc
+++ b/src/ui/dictionarybar.cc
@@ -11,12 +11,10 @@ using std::vector;
 
 DictionaryBar::DictionaryBar( QWidget * parent,
                               Config::Events & events,
-                              QString const & _editDictionaryCommand,
                               unsigned short const & maxDictionaryRefsInContextMenu_ ):
   QToolBar( tr( "&Dictionary Bar" ), parent ),
   mutedDictionaries( nullptr ),
   configEvents( events ),
-  editDictionaryCommand( _editDictionaryCommand ),
   maxDictionaryRefsInContextMenu( maxDictionaryRefsInContextMenu_ )
 {
   normalIconSize = { this->iconSize().height(), this->iconSize().height() };
@@ -115,7 +113,6 @@ void DictionaryBar::showContextMenu( QContextMenuEvent * event, bool extended )
 
   const QAction * infoAction           = nullptr;
   const QAction * headwordsAction      = nullptr;
-  const QAction * editDictAction       = nullptr;
   const QAction * openDictFolderAction = nullptr;
   QString dictFilename;
 
@@ -138,13 +135,6 @@ void DictionaryBar::showContextMenu( QContextMenuEvent * event, bool extended )
           headwordsAction = menu.addAction( tr( "Dictionary headwords" ) );
 
         openDictFolderAction = menu.addAction( tr( "Open dictionary folder" ) );
-
-        if ( !editDictionaryCommand.isEmpty() ) {
-          if ( !pDict->getMainFilename().isEmpty() ) {
-            dictFilename   = pDict->getMainFilename();
-            editDictAction = menu.addAction( tr( "Edit dictionary" ) );
-          }
-        }
       }
     }
   }
@@ -201,13 +191,6 @@ void DictionaryBar::showContextMenu( QContextMenuEvent * event, bool extended )
     return;
   }
 
-  if ( result && result == editDictAction ) {
-    QString command( editDictionaryCommand );
-    command.replace( "%GDDICT%", QString( R"("%1")" ).arg( dictFilename ) );
-    if ( !QProcess::startDetached( command, QStringList() ) )
-      QApplication::beep();
-  }
-
   if ( result && result == maxDictionaryRefsAction ) {
     showContextMenu( event, true );
   }
diff --git a/src/ui/dictionarybar.hh b/src/ui/dictionarybar.hh
index 8a8ebe4fc..9f38f942b 100644
--- a/src/ui/dictionarybar.hh
+++ b/src/ui/dictionarybar.hh
@@ -18,10 +18,7 @@ class DictionaryBar: public QToolBar
 public:
 
   /// Constructs an empty dictionary bar
-  DictionaryBar( QWidget * parent,
-                 Config::Events &,
-                 QString const & _editDictionaryCommand,
-                 unsigned short const & maxDictionaryRefsInContextMenu_ );
+  DictionaryBar( QWidget * parent, Config::Events &, unsigned short const & maxDictionaryRefsInContextMenu_ );
 
   /// Sets dictionaries to be displayed in the bar. Their statuses (enabled/
   /// disabled) are taken from the configuration data.
@@ -68,7 +65,7 @@ private:
   Config::MutedDictionaries storedMutedSet;
 
   bool enterSoloMode = false;
-  QString editDictionaryCommand;
+
   // how many dictionaries should be shown in the context menu:
   unsigned short const & maxDictionaryRefsInContextMenu;
   std::vector< sptr< Dictionary::Class > > allDictionaries;
diff --git a/src/ui/mainwindow.cc b/src/ui/mainwindow.cc
index 0ccdc5120..a1639c6e7 100644
--- a/src/ui/mainwindow.cc
+++ b/src/ui/mainwindow.cc
@@ -155,7 +155,7 @@ MainWindow::MainWindow( Config::Class & cfg_ ):
   addTab( this ),
   cfg( cfg_ ),
   history( History::Load(), cfg_.preferences.maxStringsInHistory, cfg_.maxHeadwordSize ),
-  dictionaryBar( this, configEvents, cfg.editDictionaryCommandLine, cfg.preferences.maxDictionaryRefsInContextMenu ),
+  dictionaryBar( this, configEvents, cfg.preferences.maxDictionaryRefsInContextMenu ),
   articleMaker( dictionaries, groupInstances, cfg.preferences ),
   articleNetMgr( this,
                  dictionaries,
@@ -4021,9 +4021,6 @@ void MainWindow::showDictionaryInfo( const QString & id )
       if ( result == DictInfo::OPEN_FOLDER ) {
         openDictionaryFolder( id );
       }
-      else if ( result == DictInfo::EDIT_DICTIONARY ) {
-        editDictionary( dictionaries[ x ].get() );
-      }
       else if ( result == DictInfo::SHOW_HEADWORDS ) {
         showDictionaryHeadwords( dictionaries[ x ].get() );
       }
@@ -4100,21 +4097,6 @@ void MainWindow::stopAudio()
   }
 }
 
-void MainWindow::editDictionary( Dictionary::Class * dict )
-{
-  QString dictFilename = dict->getMainFilename();
-  if ( !cfg.editDictionaryCommandLine.isEmpty() && !dictFilename.isEmpty() ) {
-    QString command( cfg.editDictionaryCommandLine );
-    command.replace( "%GDDICT%", "\"" + dictFilename + "\"" );
-    if ( command.contains( "%GDWORD%" ) ) {
-      QString headword = unescapeTabHeader( ui.tabWidget->tabText( ui.tabWidget->currentIndex() ) );
-      command.replace( "%GDWORD%", headword );
-    }
-    if ( !QProcess::startDetached( command, QStringList() ) )
-      QApplication::beep();
-  }
-}
-
 void MainWindow::openDictionaryFolder( const QString & id )
 {
   for ( unsigned x = 0; x < dictionaries.size(); x++ ) {
@@ -4161,12 +4143,6 @@ void MainWindow::foundDictsContextMenuRequested( const QPoint & pos )
 
       QAction * openDictFolderAction = menu.addAction( tr( "Open dictionary folder" ) );
 
-      QAction * editAction = nullptr;
-
-      QString dictFilename = pDict->getMainFilename();
-      if ( !cfg.editDictionaryCommandLine.isEmpty() && !dictFilename.isEmpty() )
-        editAction = menu.addAction( tr( "Edit dictionary" ) );
-
       QAction * result = menu.exec( ui.dictsList->mapToGlobal( pos ) );
 
       if ( result && result == infoAction ) {
@@ -4186,9 +4162,6 @@ void MainWindow::foundDictsContextMenuRequested( const QPoint & pos )
       else if ( result && result == openDictFolderAction ) {
         openDictionaryFolder( id );
       }
-      else if ( result && result == editAction ) {
-        editDictionary( pDict );
-      }
     }
   }
 }
diff --git a/src/ui/mainwindow.hh b/src/ui/mainwindow.hh
index 4be69adbe..9e6aa2fa8 100644
--- a/src/ui/mainwindow.hh
+++ b/src/ui/mainwindow.hh
@@ -290,8 +290,6 @@ private slots:
 
   void openDictionaryFolder( QString const & id );
 
-  void editDictionary( Dictionary::Class * dict );
-
   void showFTSIndexingName( QString const & name );
 
   void handleAddToFavoritesButton();
diff --git a/src/ui/scanpopup.cc b/src/ui/scanpopup.cc
index f88d872cd..cb5158f35 100644
--- a/src/ui/scanpopup.cc
+++ b/src/ui/scanpopup.cc
@@ -80,7 +80,7 @@ ScanPopup::ScanPopup( QWidget * parent,
   stopAudioAction( this ),
   openSearchAction( this ),
   wordFinder( this ),
-  dictionaryBar( this, configEvents, cfg.editDictionaryCommandLine, cfg.preferences.maxDictionaryRefsInContextMenu ),
+  dictionaryBar( this, configEvents, cfg.preferences.maxDictionaryRefsInContextMenu ),
   hideTimer( this )
 {
   ui.setupUi( this );