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M .gitignore

 .idea
 themes
 quotes

M R/pluralize.R

     "octopus" = "octopuses",
     "ox" = "oxen",
     "passerby" = "passersby",
     "soliloquy" = "soliloquies",
     "trilby" = "trilbys"

M R/possessive.R

+}
 pro.sub <- function( s ) {
   if( s == 'm' ) {
     s <- 'he'
+  }
   else if( s == 'f' ) {
     s <- 'she'
+  }
   else {
     s <- 'their'
+  }
+  s
+}
 pro.obj <- function( s ) {
   if( s == 'm' ) {
     s <- 'him'
+  }
   else if( s == 'f' ) {
     s <- 'her'
+  }
   else {
     s <- 'their'
+  }
+  s
+}
 pro.ref <- function( s ) {
   if( s == 'm' ) {
     s <- 'himself'
+  }
   else if( s == 'f' ) {
     s <- 'herself'
+  }
   else {
     s <- 'themselves'
+  }
+  s
+}
 pro.pos <- function( s ) {
   if( s == 'm' ) {
     s = 'his'
+  }
   else if( s == 'f' ) {
     s <- 'her'
+  }
   else {
     s <- 'theirs'
+  }
+  s
+}
 pro.noun <- function( s ) {
   if( s == 'm' ) {
     s = 'man'
+  }
   else if( s == 'f' ) {
     s <- 'woman'
+  }
+  s
+}

M build.gradle

     "--add-exports=javafx.graphics/com.sun.javafx.geom=ALL-UNNAMED",
     "--add-exports=javafx.graphics/com.sun.javafx.scene.traversal=ALL-UNNAMED",
     "--add-exports=javafx.graphics/com.sun.javafx.scene.traversal=ALL-UNNAMED",
     "--add-exports=javafx.graphics/com.sun.javafx.text=ALL-UNNAMED",
+]
   def v_junit = '5.7.2'
   def v_flexmark = '0.62.2'
   def v_jackson = '2.12.3'
   def v_jackson = '2.12.5'
   def v_batik = '1.14'
   def v_wheatsheaf = '2.0.1'
   // HTML parsing and rendering
   implementation 'org.jsoup:jsoup:1.13.1'
   implementation 'org.xhtmlrenderer:flying-saucer-core:9.1.20'
   implementation 'org.jsoup:jsoup:1.14.2'
   implementation 'org.xhtmlrenderer:flying-saucer-core:9.1.22'
   // R

M gradle.properties

 org.gradle.jvmargs=-Xmx1G -XX:MaxPermSize=512m
 org.gradle.jvmargs=-Xmx1G
 org.gradle.daemon=true
 org.gradle.parallel=true

M libs/keenquotes.jar

Binary file

M src/main/java/com/keenwrite/MainPane.java

 import java.util.*;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 import static com.keenwrite.ExportFormat.NONE;
 import static com.keenwrite.Messages.get;
 import static com.keenwrite.constants.Constants.*;
 import static com.keenwrite.constants.GraphicsConstants.ICON_DIALOG_NODE;
 import static com.keenwrite.events.Bus.register;
 import static com.keenwrite.events.HyperlinkOpenEvent.fireHyperlinkOpenEvent;
 import static com.keenwrite.events.StatusEvent.clue;
 import static com.keenwrite.io.MediaType.*;
 import static com.keenwrite.preferences.WorkspaceKeys.*;
 import static com.keenwrite.processors.IdentityProcessor.IDENTITY;
 import static com.keenwrite.processors.ProcessorFactory.createProcessors;
 import static java.lang.String.format;
 import static java.lang.System.getProperty;
 import static java.util.concurrent.Executors.newFixedThreadPool;
 import static java.util.stream.Collectors.groupingBy;
 import static javafx.application.Platform.runLater;
 import static javafx.scene.control.Alert.AlertType.ERROR;
 import static javafx.scene.control.ButtonType.*;
 import static javafx.scene.control.TabPane.TabClosingPolicy.ALL_TABS;
 import static javafx.scene.input.KeyCode.SPACE;
 import static javafx.scene.input.KeyCombination.CONTROL_DOWN;
 import static javafx.util.Duration.millis;
 import static javax.swing.SwingUtilities.invokeLater;
 import static org.fxmisc.wellbehaved.event.EventPattern.keyPressed;
 /**
  * Responsible for wiring together the main application components for a
  * particular workspace (project). These include the definition views,
  * text editors, and preview pane along with any corresponding controllers.
  */
 public final class MainPane extends SplitPane {
   private static final ExecutorService sExecutor = newFixedThreadPool( 1 );
   private static final Notifier sNotifier = Services.load( Notifier.class );
   /**
    * Used when opening files to determine how each file should be binned and
    * therefore what tab pane to be opened within.
    */
   private static final Set<MediaType> PLAIN_TEXT_FORMAT = Set.of(
     TEXT_MARKDOWN, TEXT_R_MARKDOWN, UNDEFINED
   );
   /**
    * Prevents re-instantiation of processing classes.
    */
   private final Map<TextResource, Processor<String>> mProcessors =
     new HashMap<>();
   private final Workspace mWorkspace;
   /**
    * Groups similar file type tabs together.
    */
   private final List<TabPane> mTabPanes = new ArrayList<>();
   /**
    * Stores definition names and values.
    */
   private final Map<String, String> mResolvedMap =
     new HashMap<>( MAP_SIZE_DEFAULT );
   /**
    * Renders the actively selected plain text editor tab.
    */
   private final HtmlPreview mPreview;
   /**
    * Provides an interactive document outline.
    */
   private final DocumentOutline mOutline = new DocumentOutline();
   /**
    * Changing the active editor fires the value changed event. This allows
    * refreshes to happen when external definitions are modified and need to
    * trigger the processing chain.
    */
   private final ObjectProperty<TextEditor> mActiveTextEditor =
     createActiveTextEditor();
   /**
    * Changing the active definition editor fires the value changed event. This
    * allows refreshes to happen when external definitions are modified and need
    * to trigger the processing chain.
    */
   private final ObjectProperty<TextDefinition> mActiveDefinitionEditor =
     createActiveDefinitionEditor( mActiveTextEditor );
   /**
    * Tracks the number of detached tab panels opened into their own windows,
    * which allows unique identification of subordinate windows by their title.
    * It is doubtful more than 128 windows, much less 256, will be created.
    */
   private byte mWindowCount;
   /**
    * Called when the definition data is changed.
    */
   private final EventHandler<TreeModificationEvent<Event>> mTreeHandler =
     event -> {
       final var editor = mActiveDefinitionEditor.get();
       resolve( editor );
       process( getActiveTextEditor() );
       save( editor );
     };
   private final DocumentStatistics mStatistics;
   /**
    * Adds all content panels to the main user interface. This will load the
    * configuration settings from the workspace to reproduce the settings from
    * a previous session.
    */
   public MainPane( final Workspace workspace ) {
     mWorkspace = workspace;
     mPreview = new HtmlPreview( workspace );
     mStatistics = new DocumentStatistics( workspace );
     mActiveTextEditor.set( new MarkdownEditor( workspace ) );
     open( bin( getRecentFiles() ) );
     viewPreview();
     setDividerPositions( calculateDividerPositions() );
     // Once the main scene's window regains focus, update the active definition
     // editor to the currently selected tab.
     runLater( () -> getWindow().setOnCloseRequest( ( event ) -> {
       // Order matters here. We want to close all the tabs to ensure each
       // is saved, but after they are closed, the workspace should still
       // retain the list of files that were open. If this line came after
       // closing, then restarting the application would list no files.
       mWorkspace.save();
       if( closeAll() ) {
         Platform.exit();
         System.exit( 0 );
+      }
       else {
         event.consume();
+      }
     } ) );
     register( this );
+  }
   @Subscribe
   public void handle( final TextEditorFocusEvent event ) {
     mActiveTextEditor.set( event.get() );
+  }
   @Subscribe
   public void handle( final TextDefinitionFocusEvent event ) {
     mActiveDefinitionEditor.set( event.get() );
+  }
   /**
    * Typically called when a file name is clicked in the {@link HtmlPanel}.
+   *
    * @param event The event to process, must contain a valid file reference.
    */
   @Subscribe
   public void handle( final FileOpenEvent event ) {
     final File eventFile;
     final var eventUri = event.getUri();
     if( eventUri.isAbsolute() ) {
       eventFile = new File( eventUri.getPath() );
+    }
     else {
       final var activeFile = getActiveTextEditor().getFile();
       final var parent = activeFile.getParentFile();
       if( parent == null ) {
         clue( new FileNotFoundException( eventUri.getPath() ) );
         return;
+      }
       else {
         final var parentPath = parent.getAbsolutePath();
         eventFile = Path.of( parentPath, eventUri.getPath() ).toFile();
+      }
+    }
     runLater( () -> open( eventFile ) );
+  }
   @Subscribe
   public void handle( final CaretNavigationEvent event ) {
     runLater( () -> {
       final var textArea = getActiveTextEditor().getTextArea();
       textArea.moveTo( event.getOffset() );
       textArea.requestFollowCaret();
       textArea.requestFocus();
     } );
+  }
   @Subscribe
   @SuppressWarnings( "unused" )
   public void handle( final ExportFailedEvent event ) {
     final var os = getProperty( "os.name" );
     final var arch = getProperty( "os.arch" ).toLowerCase();
     final var bits = getProperty( "sun.arch.data.model" );
     final var title = Messages.get( "Alert.typesetter.missing.title" );
     final var header = Messages.get( "Alert.typesetter.missing.header" );
     final var version = Messages.get(
       "Alert.typesetter.missing.version",
       os,
       arch
         .replaceAll( "amd.*|i.*|x86.*", "X86" )
         .replaceAll( "mips.*", "MIPS" )
         .replaceAll( "armv.*", "ARM" ),
       bits );
     final var text = Messages.get( "Alert.typesetter.missing.installer.text" );
     // Download and install ConTeXt for {0} {1} {2}-bit
     final var content = format( "%s %s", text, version );
     final var flowPane = new FlowPane();
     final var link = new Hyperlink( text );
     final var label = new Label( version );
     flowPane.getChildren().addAll( link, label );
     final var alert = new Alert( ERROR, content, OK );
     alert.setTitle( title );
     alert.setHeaderText( header );
     alert.getDialogPane().contentProperty().set( flowPane );
     alert.setGraphic( ICON_DIALOG_NODE );
     link.setOnAction( ( e ) -> {
       alert.close();
       final var url = Messages.get( "Alert.typesetter.missing.installer.url" );
       runLater( () -> fireHyperlinkOpenEvent( url ) );
     } );
     alert.showAndWait();
+  }
   /**
    * TODO: Load divider positions from exported settings, see bin() comment.
    */
   private double[] calculateDividerPositions() {
     final var ratio = 100f / getItems().size() / 100;
     final var positions = getDividerPositions();
     for( int i = 0; i < positions.length; i++ ) {
       positions[ i ] = ratio * i;
+    }
     return positions;
+  }
   /**
    * Opens all the files into the application, provided the paths are unique.
    * This may only be called for any type of files that a user can edit
    * (i.e., update and persist), such as definitions and text files.
+   *
    * @param files The list of files to open.
    */
   public void open( final List<File> files ) {
     files.forEach( this::open );
+  }
   /**
    * This opens the given file. Since the preview pane is not a file that
    * can be opened, it is safe to add a listener to the detachable pane.
+   *
    * @param file The file to open.
    */
   private void open( final File file ) {
     final var tab = createTab( file );
     final var node = tab.getContent();
     final var mediaType = MediaType.valueFrom( file );
     final var tabPane = obtainTabPane( mediaType );
     tab.setTooltip( createTooltip( file ) );
     tabPane.setFocusTraversable( false );
     tabPane.setTabClosingPolicy( ALL_TABS );
     tabPane.getTabs().add( tab );
     // Attach the tab scene factory for new tab panes.
     if( !getItems().contains( tabPane ) ) {
       addTabPane(
         node instanceof TextDefinition ? 0 : getItems().size(), tabPane
       );
+    }
     getRecentFiles().add( file.getAbsolutePath() );
+  }
   /**
    * Opens a new text editor document using the default document file name.
    */
   public void newTextEditor() {
     open( DOCUMENT_DEFAULT );
+  }
   /**
    * Opens a new definition editor document using the default definition
    * file name.
    */
   public void newDefinitionEditor() {
     open( DEFINITION_DEFAULT );
+  }
   /**
    * Iterates over all tab panes to find all {@link TextEditor}s and request
    * that they save themselves.
    */
   public void saveAll() {
     mTabPanes.forEach(
       ( tp ) -> tp.getTabs().forEach( ( tab ) -> {
         final var node = tab.getContent();
         if( node instanceof final TextEditor editor ) {
           save( editor );
+        }
       } )
     );
+  }
   /**
    * Requests that the active {@link TextEditor} saves itself. Don't bother
    * checking if modified first because if the user swaps external media from
    * an external source (e.g., USB thumb drive), save should not second-guess
    * the user: save always re-saves. Also, it's less code.
    */
   public void save() {
     save( getActiveTextEditor() );
+  }
   /**
    * Saves the active {@link TextEditor} under a new name.
+   *
    * @param files The new active editor {@link File} reference, must contain
    *              at least one element.
    */
   public void saveAs( final List<File> files ) {
     assert files != null;
     assert !files.isEmpty();
     final var editor = getActiveTextEditor();
     final var tab = getTab( editor );
     final var file = files.get( 0 );
     editor.rename( file );
     tab.ifPresent( t -> {
       t.setText( editor.getFilename() );
       t.setTooltip( createTooltip( file ) );
     } );
     save();
+  }
   /**
    * Saves the given {@link TextResource} to a file. This is typically used
    * to save either an instance of {@link TextEditor} or {@link TextDefinition}.
+   *
    * @param resource The resource to export.
    */
   private void save( final TextResource resource ) {
     try {
       resource.save();
     } catch( final Exception ex ) {
       clue( ex );
       sNotifier.alert(
         getWindow(), resource.getPath(), "TextResource.saveFailed", ex
       );
+    }
+  }
   /**
    * Closes all open {@link TextEditor}s; all {@link TextDefinition}s stay open.
+   *
    * @return {@code true} when all editors, modified or otherwise, were
    * permitted to close; {@code false} when one or more editors were modified
    * and the user requested no closing.
    */
   public boolean closeAll() {
     var closable = true;
     for( final var tabPane : mTabPanes ) {
       final var tabIterator = tabPane.getTabs().iterator();
       while( tabIterator.hasNext() ) {
         final var tab = tabIterator.next();
         final var resource = tab.getContent();
         // The definition panes auto-save, so being specific here prevents
         // closing the definitions in the situation where the user wants to
         // continue editing (i.e., possibly save unsaved work).
         if( !(resource instanceof TextEditor) ) {
           continue;
+        }
         if( canClose( (TextEditor) resource ) ) {
           tabIterator.remove();
           close( tab );
+        }
         else {
           closable = false;
+        }
+      }
+    }
     return closable;
+  }
   /**
    * Calls the tab's {@link Tab#getOnClosed()} handler to carry out a close
    * event.
+   *
    * @param tab The {@link Tab} that was closed.
    */
   private void close( final Tab tab ) {
     final var handler = tab.getOnClosed();
     if( handler != null ) {
       handler.handle( new ActionEvent() );
+    }
+  }
   /**
    * Closes the active tab; delegates to {@link #canClose(TextResource)}.
    */
   public void close() {
     final var editor = getActiveTextEditor();
     if( canClose( editor ) ) {
       close( editor );
+    }
+  }
   /**
    * Closes the given {@link TextResource}. This must not be called from within
    * a loop that iterates over the tab panes using {@code forEach}, lest a
    * concurrent modification exception be thrown.
+   *
    * @param resource The {@link TextResource} to close, without confirming with
    *                 the user.
    */
   private void close( final TextResource resource ) {
     getTab( resource ).ifPresent(
       ( tab ) -> {
         tab.getTabPane().getTabs().remove( tab );
         close( tab );
+      }
     );
+  }
   /**
    * Answers whether the given {@link TextResource} may be closed.
+   *
    * @param editor The {@link TextResource} to try closing.
    * @return {@code true} when the editor may be closed; {@code false} when
    * the user has requested to keep the editor open.
    */
   private boolean canClose( final TextResource editor ) {
     final var editorTab = getTab( editor );
     final var canClose = new AtomicBoolean( true );
     if( editor.isModified() ) {
       final var filename = new StringBuilder();
       editorTab.ifPresent( ( tab ) -> filename.append( tab.getText() ) );
       final var message = sNotifier.createNotification(
         Messages.get( "Alert.file.close.title" ),
         Messages.get( "Alert.file.close.text" ),
         filename.toString()
       );
       final var dialog = sNotifier.createConfirmation( getWindow(), message );
       dialog.showAndWait().ifPresent(
         save -> canClose.set( save == YES ? editor.save() : save == NO )
       );
+    }
     return canClose.get();
+  }
   private ObjectProperty<TextEditor> createActiveTextEditor() {
     final var editor = new SimpleObjectProperty<TextEditor>();
     editor.addListener( ( c, o, n ) -> {
       if( n != null ) {
         mPreview.setBaseUri( n.getPath() );
         process( n );
+      }
     } );
     return editor;
+  }
   /**
    * Adds the HTML preview tab to its own, singular tab pane.
    */
   public void viewPreview() {
     viewTab( mPreview, TEXT_HTML, "Pane.preview.title" );
+  }
   /**
    * Adds the document outline tab to its own, singular tab pane.
    */
   public void viewOutline() {
     viewTab( mOutline, APP_DOCUMENT_OUTLINE, "Pane.outline.title" );
+  }
   public void viewStatistics() {
     viewTab( mStatistics, APP_DOCUMENT_STATISTICS, "Pane.statistics.title" );
+  }
   public void viewFiles() {
     try {
       final var factory = new FilePickerFactory( mWorkspace );
       final var fileManager = factory.createModeless();
       viewTab( fileManager, APP_FILE_MANAGER, "Pane.files.title" );
     } catch( final Exception ex ) {
       clue( ex );
+    }
+  }
   private void viewTab(
     final Node node, final MediaType mediaType, final String key ) {
     final var tabPane = obtainTabPane( mediaType );
     for( final var tab : tabPane.getTabs() ) {
       if( tab.getContent() == node ) {
         return;
+      }
+    }
     tabPane.getTabs().add( createTab( get( key ), node ) );
     addTabPane( tabPane );
+  }
   public void viewRefresh() {
     mPreview.refresh();
+  }
   /**
    * Returns the tab that contains the given {@link TextEditor}.
+   *
    * @param editor The {@link TextEditor} instance to find amongst the tabs.
    * @return The first tab having content that matches the given tab.
    */
   private Optional<Tab> getTab( final TextResource editor ) {
     return mTabPanes.stream()
                     .flatMap( pane -> pane.getTabs().stream() )
                     .filter( tab -> editor.equals( tab.getContent() ) )
                     .findFirst();
+  }
   /**
    * Creates a new {@link DefinitionEditor} wrapped in a listener that
    * is used to detect when the active {@link DefinitionEditor} has changed.
    * Upon changing, the {@link #mResolvedMap} is updated and the active
    * text editor is refreshed.
+   *
    * @param editor Text editor to update with the revised resolved map.
    * @return A newly configured property that represents the active
    * {@link DefinitionEditor}, never null.
    */
   private ObjectProperty<TextDefinition> createActiveDefinitionEditor(
     final ObjectProperty<TextEditor> editor ) {
     final var definitions = new SimpleObjectProperty<TextDefinition>();
     definitions.addListener( ( c, o, n ) -> {
       resolve( n == null ? createDefinitionEditor() : n );
       process( editor.get() );
     } );
     return definitions;
+  }
   private Tab createTab( final String filename, final Node node ) {
     return new DetachableTab( filename, node );
+  }
   private Tab createTab( final File file ) {
     final var r = createTextResource( file );
     final var tab = createTab( r.getFilename(), r.getNode() );
     r.modifiedProperty().addListener(
       ( c, o, n ) -> tab.setText( r.getFilename() + (n ? "*" : "") )
     );
     // This is called when either the tab is closed by the user clicking on
     // the tab's close icon or when closing (all) from the file menu.
     tab.setOnClosed(
       ( __ ) -> getRecentFiles().remove( file.getAbsolutePath() )
     );
     tab.tabPaneProperty().addListener( ( cPane, oPane, nPane ) -> {
       if( nPane != null ) {
         nPane.focusedProperty().addListener( ( c, o, n ) -> {
           if( n != null && n ) {
             final var selected = nPane.getSelectionModel().getSelectedItem();
             final var node = selected.getContent();
             node.requestFocus();
+          }
         } );
+      }
     } );
     return tab;
+  }
   /**
    * Creates bins for the different {@link MediaType}s, which eventually are
    * added to the UI as separate tab panes. If ever a general-purpose scene
    * exporter is developed to serialize a scene to an FXML file, this could
    * be replaced by such a class.
    * <p>
    * When binning the files, this makes sure that at least one file exists
    * for every type. If the user has opted to close a particular type (such
    * as the definition pane), the view will suppressed elsewhere.
    * </p>
    * <p>
    * The order that the binned files are returned will be reflected in the
    * order that the corresponding panes are rendered in the UI.
    * </p>
+   *
    * @param paths The file paths to bin according to their type.
    * @return An in-order list of files, first by structured definition files,
    * then by plain text documents.
    */
   private List<File> bin( final SetProperty<String> paths ) {
     // Treat all files destined for the text editor as plain text documents
     // so that they are added to the same pane. Grouping by TEXT_PLAIN is a
     // bit arbitrary, but means explicitly capturing TEXT_PLAIN isn't needed.
     final Function<MediaType, MediaType> bin =
       m -> PLAIN_TEXT_FORMAT.contains( m ) ? TEXT_PLAIN : m;
     // Create two groups: YAML files and plain text files.
     final var bins = paths
       .stream()
       .collect(
         groupingBy( path -> bin.apply( MediaType.fromFilename( path ) ) )
       );
     bins.putIfAbsent( TEXT_YAML, List.of( DEFINITION_DEFAULT.toString() ) );
     bins.putIfAbsent( TEXT_PLAIN, List.of( DOCUMENT_DEFAULT.toString() ) );
     final var result = new ArrayList<File>( paths.size() );
     // Ensure that the same types are listed together (keep insertion order).
     bins.forEach( ( mediaType, files ) -> result.addAll(
       files.stream().map( File::new ).collect( Collectors.toList() ) )
     );
     return result;
+  }
   /**
    * Uses the given {@link TextDefinition} instance to update the
    * {@link #mResolvedMap}.
+   *
    * @param editor A non-null, possibly empty definition editor.
    */
   private void resolve( final TextDefinition editor ) {
     assert editor != null;
     final var tokens = createDefinitionTokens();
     final var operator = new YamlSigilOperator( tokens );
     final var map = new HashMap<String, String>();
     editor.toMap().forEach( ( k, v ) -> map.put( operator.entoken( k ), v ) );
     mResolvedMap.clear();
     mResolvedMap.putAll( editor.interpolate( map, tokens ) );
+  }
   /**
    * Force the active editor to update, which will cause the processor
    * to re-evaluate the interpolated definition map thereby updating the
    * preview pane.
+   *
    * @param editor Contains the source document to update in the preview pane.
    */
   private void process( final TextEditor editor ) {
     // Ensure processing does not run on the JavaFX thread, which frees the
     // text editor immediately for caret movement. The preview will have a
     // slight delay when catching up to the caret position.
     final var task = new Task<Void>() {
       @Override
       public Void call() {
         try {
           final var p = mProcessors.getOrDefault( editor, IDENTITY );
           p.apply( editor == null ? "" : editor.getText() );
         } catch( final Exception ex ) {
           clue( ex );
+        }
         return null;
+      }
     };
     task.setOnSucceeded(
       e -> invokeLater( () -> mPreview.scrollTo( CARET_ID ) )
     );
     // Prevents multiple process requests from executing simultaneously (due
     // to having a restricted queue size).
     sExecutor.execute( task );
+  }
   /**
    * Lazily creates a {@link TabPane} configured to listen for tab select
    * events. The tab pane is associated with a given media type so that
    * similar files can be grouped together.
+   *
    * @param mediaType The media type to associate with the tab pane.
    * @return An instance of {@link TabPane} that will handle tab docking.
    */
   private TabPane obtainTabPane( final MediaType mediaType ) {
     for( final var pane : mTabPanes ) {
       for( final var tab : pane.getTabs() ) {
         final var node = tab.getContent();
         if( node instanceof TextResource r && r.supports( mediaType ) ) {
           return pane;
+        }
+      }
+    }
     final var pane = createTabPane();
     mTabPanes.add( pane );
     return pane;
+  }
   /**
    * Creates an initialized {@link TabPane} instance.
+   *
    * @return A new {@link TabPane} with all listeners configured.
    */
   private TabPane createTabPane() {
     final var tabPane = new DetachableTabPane();
     initStageOwnerFactory( tabPane );
     initTabListener( tabPane );
     return tabPane;
+  }
   /**
    * When any {@link DetachableTabPane} is detached from the main window,
    * the stage owner factory must be given its parent window, which will
    * own the child window. The parent window is the {@link MainPane}'s
    * {@link Scene}'s {@link Window} instance.
+   *
    * <p>
    * This will derives the new title from the main window title, incrementing
    * the window count to help uniquely identify the child windows.
    * </p>
+   *
    * @param tabPane A new {@link DetachableTabPane} to configure.
    */
   private void initStageOwnerFactory( final DetachableTabPane tabPane ) {
     tabPane.setStageOwnerFactory( ( stage ) -> {
       final var title = get(
         "Detach.tab.title",
         ((Stage) getWindow()).getTitle(), ++mWindowCount
       );
       stage.setTitle( title );
       return getScene().getWindow();
     } );
+  }
   /**
    * Responsible for configuring the content of each {@link DetachableTab} when
    * it is added to the given {@link DetachableTabPane} instance.
    * <p>
    * For {@link TextEditor} contents, an instance of {@link ScrollEventHandler}
    * is initialized to perform synchronized scrolling between the editor and
    * its preview window. Additionally, the last tab in the tab pane's list of
    * tabs is given focus.
    * </p>
    * <p>
    * Note that multiple tabs can be added simultaneously.
    * </p>
+   *
    * @param tabPane A new {@link TabPane} to configure.
    */
   private void initTabListener( final TabPane tabPane ) {
     tabPane.getTabs().addListener(
       ( final ListChangeListener.Change<? extends Tab> listener ) -> {
         while( listener.next() ) {
           if( listener.wasAdded() ) {
             final var tabs = listener.getAddedSubList();
             tabs.forEach( ( tab ) -> {
               final var node = tab.getContent();
               if( node instanceof TextEditor ) {
                 initScrollEventListener( tab );
+              }
             } );
             // Select and give focus to the last tab opened.
             final var index = tabs.size() - 1;
             if( index >= 0 ) {
               final var tab = tabs.get( index );
               tabPane.getSelectionModel().select( tab );
               tab.getContent().requestFocus();
+            }
+          }
+        }
+      }
     );
+  }
   /**
    * Synchronizes scrollbar positions between the given {@link Tab} that
    * contains an instance of {@link TextEditor} and {@link HtmlPreview} pane.
+   *
    * @param tab The container for an instance of {@link TextEditor}.
    */
   private void initScrollEventListener( final Tab tab ) {
     final var editor = (TextEditor) tab.getContent();
     final var scrollPane = editor.getScrollPane();
     final var scrollBar = mPreview.getVerticalScrollBar();
     final var handler = new ScrollEventHandler( scrollPane, scrollBar );
     handler.enabledProperty().bind( tab.selectedProperty() );
+  }
   private void addTabPane( final int index, final TabPane tabPane ) {
     final var items = getItems();
     if( !items.contains( tabPane ) ) {
       items.add( index, tabPane );
+    }
+  }
   private void addTabPane( final TabPane tabPane ) {
     addTabPane( getItems().size(), tabPane );
+  }
   public ProcessorContext createProcessorContext() {
     return createProcessorContext( null, NONE );
+  }
   public ProcessorContext createProcessorContext(
     final Path exportPath, final ExportFormat format ) {
     final var editor = getActiveTextEditor();
     return createProcessorContext(
       editor.getPath(), exportPath, format, editor.getCaret() );
+  }
   private ProcessorContext createProcessorContext(
     final Path path, final Caret caret ) {
     return createProcessorContext( path, null, ExportFormat.NONE, caret );
+  }
   /**
    * @param path       Used by {@link ProcessorFactory} to determine
    *                   {@link Processor} type to create based on file type.
    * @param exportPath Used when exporting to a PDF file (binary).
    * @param format     Used when processors export to a new text format.
    * @param caret      Used by {@link CaretExtension} to add ID attribute into
    *                   preview document for scrollbar synchronization.
    * @return A new {@link ProcessorContext} to use when creating an instance of
    * {@link Processor}.
    */
   private ProcessorContext createProcessorContext(
     final Path path, final Path exportPath, final ExportFormat format,
     final Caret caret ) {
     return new ProcessorContext(
       mPreview, mResolvedMap, path, exportPath, format, mWorkspace, caret
     );
+  }
   private TextResource createTextResource( final File file ) {
     // TODO: Create PlainTextEditor that's returned by default.
     return MediaType.valueFrom( file ) == TEXT_YAML
       ? createDefinitionEditor( file )
       : createMarkdownEditor( file );
+  }
   /**
    * Creates an instance of {@link MarkdownEditor} that listens for both
    * caret change events and text change events. Text change events must
    * take priority over caret change events because it's possible to change
    * the text without moving the caret (e.g., delete selected text).
+   *
    * @param file The file containing contents for the text editor.
    * @return A non-null text editor.
    */
   private TextResource createMarkdownEditor( final File file ) {
     final var path = file.toPath();
     final var editor = new MarkdownEditor( file, getWorkspace() );
     final var caret = editor.getCaret();
     final var context = createProcessorContext( path, caret );
     mProcessors.computeIfAbsent( editor, p -> createProcessors( context ) );
     editor.addDirtyListener( ( c, o, n ) -> {
       if( n ) {
         // Reset the status to OK after changing the text.
         clue();
         // Processing the text may update the status bar.
         process( getActiveTextEditor() );
+      }
     } );
     editor.addEventListener(
       keyPressed( SPACE, CONTROL_DOWN ), this::autoinsert
     );
     // Set the active editor, which refreshes the preview panel.
     mActiveTextEditor.set( editor );
     return editor;
+  }
   /**
    * Delegates to {@link #autoinsert()}.
+   *
    * @param event Ignored.
    */
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.ScheduledFuture;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicReference;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 import static com.keenwrite.ExportFormat.NONE;
 import static com.keenwrite.Messages.get;
 import static com.keenwrite.constants.Constants.*;
 import static com.keenwrite.constants.GraphicsConstants.ICON_DIALOG_NODE;
 import static com.keenwrite.events.Bus.register;
 import static com.keenwrite.events.HyperlinkOpenEvent.fireHyperlinkOpenEvent;
 import static com.keenwrite.events.StatusEvent.clue;
 import static com.keenwrite.io.MediaType.*;
 import static com.keenwrite.preferences.WorkspaceKeys.*;
 import static com.keenwrite.processors.IdentityProcessor.IDENTITY;
 import static com.keenwrite.processors.ProcessorFactory.createProcessors;
 import static java.lang.String.format;
 import static java.lang.System.getProperty;
 import static java.util.concurrent.Executors.newFixedThreadPool;
 import static java.util.concurrent.Executors.newScheduledThreadPool;
 import static java.util.concurrent.TimeUnit.SECONDS;
 import static java.util.stream.Collectors.groupingBy;
 import static javafx.application.Platform.runLater;
 import static javafx.scene.control.Alert.AlertType.ERROR;
 import static javafx.scene.control.ButtonType.*;
 import static javafx.scene.control.TabPane.TabClosingPolicy.ALL_TABS;
 import static javafx.scene.input.KeyCode.SPACE;
 import static javafx.scene.input.KeyCombination.CONTROL_DOWN;
 import static javafx.util.Duration.millis;
 import static javax.swing.SwingUtilities.invokeLater;
 import static org.fxmisc.wellbehaved.event.EventPattern.keyPressed;
 /**
  * Responsible for wiring together the main application components for a
  * particular workspace (project). These include the definition views,
  * text editors, and preview pane along with any corresponding controllers.
  */
 public final class MainPane extends SplitPane {
   private static final ExecutorService sExecutor = newFixedThreadPool( 1 );
   private final ScheduledExecutorService mSaver = newScheduledThreadPool( 1 );
   private final AtomicReference<ScheduledFuture<?>> mSaveTask =
     new AtomicReference<>();
   private static final Notifier sNotifier = Services.load( Notifier.class );
   /**
    * Used when opening files to determine how each file should be binned and
    * therefore what tab pane to be opened within.
    */
   private static final Set<MediaType> PLAIN_TEXT_FORMAT = Set.of(
     TEXT_MARKDOWN, TEXT_R_MARKDOWN, UNDEFINED
   );
   /**
    * Prevents re-instantiation of processing classes.
    */
   private final Map<TextResource, Processor<String>> mProcessors =
     new HashMap<>();
   private final Workspace mWorkspace;
   /**
    * Groups similar file type tabs together.
    */
   private final List<TabPane> mTabPanes = new ArrayList<>();
   /**
    * Stores definition names and values.
    */
   private final Map<String, String> mResolvedMap =
     new HashMap<>( MAP_SIZE_DEFAULT );
   /**
    * Renders the actively selected plain text editor tab.
    */
   private final HtmlPreview mPreview;
   /**
    * Provides an interactive document outline.
    */
   private final DocumentOutline mOutline = new DocumentOutline();
   /**
    * Changing the active editor fires the value changed event. This allows
    * refreshes to happen when external definitions are modified and need to
    * trigger the processing chain.
    */
   private final ObjectProperty<TextEditor> mActiveTextEditor =
     createActiveTextEditor();
   /**
    * Changing the active definition editor fires the value changed event. This
    * allows refreshes to happen when external definitions are modified and need
    * to trigger the processing chain.
    */
   private final ObjectProperty<TextDefinition> mActiveDefinitionEditor =
     createActiveDefinitionEditor( mActiveTextEditor );
   /**
    * Tracks the number of detached tab panels opened into their own windows,
    * which allows unique identification of subordinate windows by their title.
    * It is doubtful more than 128 windows, much less 256, will be created.
    */
   private byte mWindowCount;
   /**
    * Called when the definition data is changed.
    */
   private final EventHandler<TreeModificationEvent<Event>> mTreeHandler =
     event -> {
       final var editor = mActiveDefinitionEditor.get();
       resolve( editor );
       process( getActiveTextEditor() );
       save( editor );
     };
   private final DocumentStatistics mStatistics;
   /**
    * Adds all content panels to the main user interface. This will load the
    * configuration settings from the workspace to reproduce the settings from
    * a previous session.
    */
   public MainPane( final Workspace workspace ) {
     mWorkspace = workspace;
     mPreview = new HtmlPreview( workspace );
     mStatistics = new DocumentStatistics( workspace );
     mActiveTextEditor.set( new MarkdownEditor( workspace ) );
     open( bin( getRecentFiles() ) );
     viewPreview();
     setDividerPositions( calculateDividerPositions() );
     // Once the main scene's window regains focus, update the active definition
     // editor to the currently selected tab.
     runLater( () -> getWindow().setOnCloseRequest( ( event ) -> {
       // Order matters here. We want to close all the tabs to ensure each
       // is saved, but after they are closed, the workspace should still
       // retain the list of files that were open. If this line came after
       // closing, then restarting the application would list no files.
       mWorkspace.save();
       if( closeAll() ) {
         Platform.exit();
         System.exit( 0 );
+      }
       else {
         event.consume();
+      }
     } ) );
     register( this );
     initAutosave( workspace );
+  }
   @Subscribe
   public void handle( final TextEditorFocusEvent event ) {
     mActiveTextEditor.set( event.get() );
+  }
   @Subscribe
   public void handle( final TextDefinitionFocusEvent event ) {
     mActiveDefinitionEditor.set( event.get() );
+  }
   /**
    * Typically called when a file name is clicked in the {@link HtmlPanel}.
+   *
    * @param event The event to process, must contain a valid file reference.
    */
   @Subscribe
   public void handle( final FileOpenEvent event ) {
     final File eventFile;
     final var eventUri = event.getUri();
     if( eventUri.isAbsolute() ) {
       eventFile = new File( eventUri.getPath() );
+    }
     else {
       final var activeFile = getActiveTextEditor().getFile();
       final var parent = activeFile.getParentFile();
       if( parent == null ) {
         clue( new FileNotFoundException( eventUri.getPath() ) );
         return;
+      }
       else {
         final var parentPath = parent.getAbsolutePath();
         eventFile = Path.of( parentPath, eventUri.getPath() ).toFile();
+      }
+    }
     runLater( () -> open( eventFile ) );
+  }
   @Subscribe
   public void handle( final CaretNavigationEvent event ) {
     runLater( () -> {
       final var textArea = getActiveTextEditor().getTextArea();
       textArea.moveTo( event.getOffset() );
       textArea.requestFollowCaret();
       textArea.requestFocus();
     } );
+  }
   @Subscribe
   @SuppressWarnings( "unused" )
   public void handle( final ExportFailedEvent event ) {
     final var os = getProperty( "os.name" );
     final var arch = getProperty( "os.arch" ).toLowerCase();
     final var bits = getProperty( "sun.arch.data.model" );
     final var title = Messages.get( "Alert.typesetter.missing.title" );
     final var header = Messages.get( "Alert.typesetter.missing.header" );
     final var version = Messages.get(
       "Alert.typesetter.missing.version",
       os,
       arch
         .replaceAll( "amd.*|i.*|x86.*", "X86" )
         .replaceAll( "mips.*", "MIPS" )
         .replaceAll( "armv.*", "ARM" ),
       bits );
     final var text = Messages.get( "Alert.typesetter.missing.installer.text" );
     // Download and install ConTeXt for {0} {1} {2}-bit
     final var content = format( "%s %s", text, version );
     final var flowPane = new FlowPane();
     final var link = new Hyperlink( text );
     final var label = new Label( version );
     flowPane.getChildren().addAll( link, label );
     final var alert = new Alert( ERROR, content, OK );
     alert.setTitle( title );
     alert.setHeaderText( header );
     alert.getDialogPane().contentProperty().set( flowPane );
     alert.setGraphic( ICON_DIALOG_NODE );
     link.setOnAction( ( e ) -> {
       alert.close();
       final var url = Messages.get( "Alert.typesetter.missing.installer.url" );
       runLater( () -> fireHyperlinkOpenEvent( url ) );
     } );
     alert.showAndWait();
+  }
   private void initAutosave( final Workspace workspace ) {
     final var rate = workspace.integerProperty( KEY_EDITOR_AUTOSAVE );
     rate.addListener(
       ( c, o, n ) -> {
         final var taskRef = mSaveTask.get();
         // Prevent multiple autosaves from running.
         if( taskRef != null ) {
           taskRef.cancel( false );
+        }
         initAutosave( rate );
+      }
     );
     // Start the save listener (avoids duplicating some code).
     initAutosave( rate );
+  }
   private void initAutosave( final IntegerProperty rate ) {
     mSaveTask.set(
       mSaver.scheduleAtFixedRate(
         () -> {
           if( getActiveTextEditor().isModified() ) {
             // Ensure the modified indicator is cleared by running on EDT.
             runLater( this::save );
+          }
         }, 0, rate.intValue(), SECONDS
+      )
     );
+  }
   /**
    * TODO: Load divider positions from exported settings, see bin() comment.
    */
   private double[] calculateDividerPositions() {
     final var ratio = 100f / getItems().size() / 100;
     final var positions = getDividerPositions();
     for( int i = 0; i < positions.length; i++ ) {
       positions[ i ] = ratio * i;
+    }
     return positions;
+  }
   /**
    * Opens all the files into the application, provided the paths are unique.
    * This may only be called for any type of files that a user can edit
    * (i.e., update and persist), such as definitions and text files.
+   *
    * @param files The list of files to open.
    */
   public void open( final List<File> files ) {
     files.forEach( this::open );
+  }
   /**
    * This opens the given file. Since the preview pane is not a file that
    * can be opened, it is safe to add a listener to the detachable pane.
+   *
    * @param file The file to open.
    */
   private void open( final File file ) {
     final var tab = createTab( file );
     final var node = tab.getContent();
     final var mediaType = MediaType.valueFrom( file );
     final var tabPane = obtainTabPane( mediaType );
     tab.setTooltip( createTooltip( file ) );
     tabPane.setFocusTraversable( false );
     tabPane.setTabClosingPolicy( ALL_TABS );
     tabPane.getTabs().add( tab );
     // Attach the tab scene factory for new tab panes.
     if( !getItems().contains( tabPane ) ) {
       addTabPane(
         node instanceof TextDefinition ? 0 : getItems().size(), tabPane
       );
+    }
     getRecentFiles().add( file.getAbsolutePath() );
+  }
   /**
    * Opens a new text editor document using the default document file name.
    */
   public void newTextEditor() {
     open( DOCUMENT_DEFAULT );
+  }
   /**
    * Opens a new definition editor document using the default definition
    * file name.
    */
   public void newDefinitionEditor() {
     open( DEFINITION_DEFAULT );
+  }
   /**
    * Iterates over all tab panes to find all {@link TextEditor}s and request
    * that they save themselves.
    */
   public void saveAll() {
     mTabPanes.forEach(
       ( tp ) -> tp.getTabs().forEach( ( tab ) -> {
         final var node = tab.getContent();
         if( node instanceof final TextEditor editor ) {
           save( editor );
+        }
       } )
     );
+  }
   /**
    * Requests that the active {@link TextEditor} saves itself. Don't bother
    * checking if modified first because if the user swaps external media from
    * an external source (e.g., USB thumb drive), save should not second-guess
    * the user: save always re-saves. Also, it's less code.
    */
   public void save() {
     save( getActiveTextEditor() );
+  }
   /**
    * Saves the active {@link TextEditor} under a new name.
+   *
    * @param files The new active editor {@link File} reference, must contain
    *              at least one element.
    */
   public void saveAs( final List<File> files ) {
     assert files != null;
     assert !files.isEmpty();
     final var editor = getActiveTextEditor();
     final var tab = getTab( editor );
     final var file = files.get( 0 );
     editor.rename( file );
     tab.ifPresent( t -> {
       t.setText( editor.getFilename() );
       t.setTooltip( createTooltip( file ) );
     } );
     save();
+  }
   /**
    * Saves the given {@link TextResource} to a file. This is typically used
    * to save either an instance of {@link TextEditor} or {@link TextDefinition}.
+   *
    * @param resource The resource to export.
    */
   private void save( final TextResource resource ) {
     try {
       resource.save();
     } catch( final Exception ex ) {
       clue( ex );
       sNotifier.alert(
         getWindow(), resource.getPath(), "TextResource.saveFailed", ex
       );
+    }
+  }
   /**
    * Closes all open {@link TextEditor}s; all {@link TextDefinition}s stay open.
+   *
    * @return {@code true} when all editors, modified or otherwise, were
    * permitted to close; {@code false} when one or more editors were modified
    * and the user requested no closing.
    */
   public boolean closeAll() {
     var closable = true;
     for( final var tabPane : mTabPanes ) {
       final var tabIterator = tabPane.getTabs().iterator();
       while( tabIterator.hasNext() ) {
         final var tab = tabIterator.next();
         final var resource = tab.getContent();
         // The definition panes auto-save, so being specific here prevents
         // closing the definitions in the situation where the user wants to
         // continue editing (i.e., possibly save unsaved work).
         if( !(resource instanceof TextEditor) ) {
           continue;
+        }
         if( canClose( (TextEditor) resource ) ) {
           tabIterator.remove();
           close( tab );
+        }
         else {
           closable = false;
+        }
+      }
+    }
     return closable;
+  }
   /**
    * Calls the tab's {@link Tab#getOnClosed()} handler to carry out a close
    * event.
+   *
    * @param tab The {@link Tab} that was closed.
    */
   private void close( final Tab tab ) {
     assert tab != null;
     final var handler = tab.getOnClosed();
     if( handler != null ) {
       handler.handle( new ActionEvent() );
+    }
+  }
   /**
    * Closes the active tab; delegates to {@link #canClose(TextResource)}.
    */
   public void close() {
     final var editor = getActiveTextEditor();
     if( canClose( editor ) ) {
       close( editor );
+    }
+  }
   /**
    * Closes the given {@link TextResource}. This must not be called from within
    * a loop that iterates over the tab panes using {@code forEach}, lest a
    * concurrent modification exception be thrown.
+   *
    * @param resource The {@link TextResource} to close, without confirming with
    *                 the user.
    */
   private void close( final TextResource resource ) {
     getTab( resource ).ifPresent(
       ( tab ) -> {
         close( tab );
         tab.getTabPane().getTabs().remove( tab );
+      }
     );
+  }
   /**
    * Answers whether the given {@link TextResource} may be closed.
+   *
    * @param editor The {@link TextResource} to try closing.
    * @return {@code true} when the editor may be closed; {@code false} when
    * the user has requested to keep the editor open.
    */
   private boolean canClose( final TextResource editor ) {
     final var editorTab = getTab( editor );
     final var canClose = new AtomicBoolean( true );
     if( editor.isModified() ) {
       final var filename = new StringBuilder();
       editorTab.ifPresent( ( tab ) -> filename.append( tab.getText() ) );
       final var message = sNotifier.createNotification(
         Messages.get( "Alert.file.close.title" ),
         Messages.get( "Alert.file.close.text" ),
         filename.toString()
       );
       final var dialog = sNotifier.createConfirmation( getWindow(), message );
       dialog.showAndWait().ifPresent(
         save -> canClose.set( save == YES ? editor.save() : save == NO )
       );
+    }
     return canClose.get();
+  }
   private ObjectProperty<TextEditor> createActiveTextEditor() {
     final var editor = new SimpleObjectProperty<TextEditor>();
     editor.addListener( ( c, o, n ) -> {
       if( n != null ) {
         mPreview.setBaseUri( n.getPath() );
         process( n );
+      }
     } );
     return editor;
+  }
   /**
    * Adds the HTML preview tab to its own, singular tab pane.
    */
   public void viewPreview() {
     viewTab( mPreview, TEXT_HTML, "Pane.preview.title" );
+  }
   /**
    * Adds the document outline tab to its own, singular tab pane.
    */
   public void viewOutline() {
     viewTab( mOutline, APP_DOCUMENT_OUTLINE, "Pane.outline.title" );
+  }
   public void viewStatistics() {
     viewTab( mStatistics, APP_DOCUMENT_STATISTICS, "Pane.statistics.title" );
+  }
   public void viewFiles() {
     try {
       final var factory = new FilePickerFactory( mWorkspace );
       final var fileManager = factory.createModeless();
       viewTab( fileManager, APP_FILE_MANAGER, "Pane.files.title" );
     } catch( final Exception ex ) {
       clue( ex );
+    }
+  }
   private void viewTab(
     final Node node, final MediaType mediaType, final String key ) {
     final var tabPane = obtainTabPane( mediaType );
     for( final var tab : tabPane.getTabs() ) {
       if( tab.getContent() == node ) {
         return;
+      }
+    }
     tabPane.getTabs().add( createTab( get( key ), node ) );
     addTabPane( tabPane );
+  }
   public void viewRefresh() {
     mPreview.refresh();
+  }
   /**
    * Returns the tab that contains the given {@link TextEditor}.
+   *
    * @param editor The {@link TextEditor} instance to find amongst the tabs.
    * @return The first tab having content that matches the given tab.
    */
   private Optional<Tab> getTab( final TextResource editor ) {
     return mTabPanes.stream()
                     .flatMap( pane -> pane.getTabs().stream() )
                     .filter( tab -> editor.equals( tab.getContent() ) )
                     .findFirst();
+  }
   /**
    * Creates a new {@link DefinitionEditor} wrapped in a listener that
    * is used to detect when the active {@link DefinitionEditor} has changed.
    * Upon changing, the {@link #mResolvedMap} is updated and the active
    * text editor is refreshed.
+   *
    * @param editor Text editor to update with the revised resolved map.
    * @return A newly configured property that represents the active
    * {@link DefinitionEditor}, never null.
    */
   private ObjectProperty<TextDefinition> createActiveDefinitionEditor(
     final ObjectProperty<TextEditor> editor ) {
     final var definitions = new SimpleObjectProperty<TextDefinition>();
     definitions.addListener( ( c, o, n ) -> {
       resolve( n == null ? createDefinitionEditor() : n );
       process( editor.get() );
     } );
     return definitions;
+  }
   private Tab createTab( final String filename, final Node node ) {
     return new DetachableTab( filename, node );
+  }
   private Tab createTab( final File file ) {
     final var r = createTextResource( file );
     final var tab = createTab( r.getFilename(), r.getNode() );
     r.modifiedProperty().addListener(
       ( c, o, n ) -> tab.setText( r.getFilename() + (n ? "*" : "") )
     );
     // This is called when either the tab is closed by the user clicking on
     // the tab's close icon or when closing (all) from the file menu.
     tab.setOnClosed(
       ( __ ) -> getRecentFiles().remove( file.getAbsolutePath() )
     );
     tab.tabPaneProperty().addListener( ( cPane, oPane, nPane ) -> {
       if( nPane != null ) {
         nPane.focusedProperty().addListener( ( c, o, n ) -> {
           if( n != null && n ) {
             final var selected = nPane.getSelectionModel().getSelectedItem();
             final var node = selected.getContent();
             node.requestFocus();
+          }
         } );
+      }
     } );
     return tab;
+  }
   /**
    * Creates bins for the different {@link MediaType}s, which eventually are
    * added to the UI as separate tab panes. If ever a general-purpose scene
    * exporter is developed to serialize a scene to an FXML file, this could
    * be replaced by such a class.
    * <p>
    * When binning the files, this makes sure that at least one file exists
    * for every type. If the user has opted to close a particular type (such
    * as the definition pane), the view will suppressed elsewhere.
    * </p>
    * <p>
    * The order that the binned files are returned will be reflected in the
    * order that the corresponding panes are rendered in the UI.
    * </p>
+   *
    * @param paths The file paths to bin according to their type.
    * @return An in-order list of files, first by structured definition files,
    * then by plain text documents.
    */
   private List<File> bin( final SetProperty<String> paths ) {
     // Treat all files destined for the text editor as plain text documents
     // so that they are added to the same pane. Grouping by TEXT_PLAIN is a
     // bit arbitrary, but means explicitly capturing TEXT_PLAIN isn't needed.
     final Function<MediaType, MediaType> bin =
       m -> PLAIN_TEXT_FORMAT.contains( m ) ? TEXT_PLAIN : m;
     // Create two groups: YAML files and plain text files.
     final var bins = paths
       .stream()
       .collect(
         groupingBy( path -> bin.apply( MediaType.fromFilename( path ) ) )
       );
     bins.putIfAbsent( TEXT_YAML, List.of( DEFINITION_DEFAULT.toString() ) );
     bins.putIfAbsent( TEXT_PLAIN, List.of( DOCUMENT_DEFAULT.toString() ) );
     final var result = new ArrayList<File>( paths.size() );
     // Ensure that the same types are listed together (keep insertion order).
     bins.forEach( ( mediaType, files ) -> result.addAll(
       files.stream().map( File::new ).collect( Collectors.toList() ) )
     );
     return result;
+  }
   /**
    * Uses the given {@link TextDefinition} instance to update the
    * {@link #mResolvedMap}.
+   *
    * @param editor A non-null, possibly empty definition editor.
    */
   private void resolve( final TextDefinition editor ) {
     assert editor != null;
     final var tokens = createDefinitionTokens();
     final var operator = new YamlSigilOperator( tokens );
     final var map = new HashMap<String, String>();
     editor.toMap().forEach( ( k, v ) -> map.put( operator.entoken( k ), v ) );
     mResolvedMap.clear();
     mResolvedMap.putAll( editor.interpolate( map, tokens ) );
+  }
   /**
    * Force the active editor to update, which will cause the processor
    * to re-evaluate the interpolated definition map thereby updating the
    * preview pane.
+   *
    * @param editor Contains the source document to update in the preview pane.
    */
   private void process( final TextEditor editor ) {
     // Ensure processing does not run on the JavaFX thread, which frees the
     // text editor immediately for caret movement. The preview will have a
     // slight delay when catching up to the caret position.
     final var task = new Task<Void>() {
       @Override
       public Void call() {
         try {
           final var p = mProcessors.getOrDefault( editor, IDENTITY );
           p.apply( editor == null ? "" : editor.getText() );
         } catch( final Exception ex ) {
           clue( ex );
+        }
         return null;
+      }
     };
     task.setOnSucceeded(
       e -> invokeLater( () -> mPreview.scrollTo( CARET_ID ) )
     );
     // Prevents multiple process requests from executing simultaneously (due
     // to having a restricted queue size).
     sExecutor.execute( task );
+  }
   /**
    * Lazily creates a {@link TabPane} configured to listen for tab select
    * events. The tab pane is associated with a given media type so that
    * similar files can be grouped together.
+   *
    * @param mediaType The media type to associate with the tab pane.
    * @return An instance of {@link TabPane} that will handle tab docking.
    */
   private TabPane obtainTabPane( final MediaType mediaType ) {
     for( final var pane : mTabPanes ) {
       for( final var tab : pane.getTabs() ) {
         final var node = tab.getContent();
         if( node instanceof TextResource r && r.supports( mediaType ) ) {
           return pane;
+        }
+      }
+    }
     final var pane = createTabPane();
     mTabPanes.add( pane );
     return pane;
+  }
   /**
    * Creates an initialized {@link TabPane} instance.
+   *
    * @return A new {@link TabPane} with all listeners configured.
    */
   private TabPane createTabPane() {
     final var tabPane = new DetachableTabPane();
     initStageOwnerFactory( tabPane );
     initTabListener( tabPane );
     return tabPane;
+  }
   /**
    * When any {@link DetachableTabPane} is detached from the main window,
    * the stage owner factory must be given its parent window, which will
    * own the child window. The parent window is the {@link MainPane}'s
    * {@link Scene}'s {@link Window} instance.
+   *
    * <p>
    * This will derives the new title from the main window title, incrementing
    * the window count to help uniquely identify the child windows.
    * </p>
+   *
    * @param tabPane A new {@link DetachableTabPane} to configure.
    */
   private void initStageOwnerFactory( final DetachableTabPane tabPane ) {
     tabPane.setStageOwnerFactory( ( stage ) -> {
       final var title = get(
         "Detach.tab.title",
         ((Stage) getWindow()).getTitle(), ++mWindowCount
       );
       stage.setTitle( title );
       return getScene().getWindow();
     } );
+  }
   /**
    * Responsible for configuring the content of each {@link DetachableTab} when
    * it is added to the given {@link DetachableTabPane} instance.
    * <p>
    * For {@link TextEditor} contents, an instance of {@link ScrollEventHandler}
    * is initialized to perform synchronized scrolling between the editor and
    * its preview window. Additionally, the last tab in the tab pane's list of
    * tabs is given focus.
    * </p>
    * <p>
    * Note that multiple tabs can be added simultaneously.
    * </p>
+   *
    * @param tabPane A new {@link TabPane} to configure.
    */
   private void initTabListener( final TabPane tabPane ) {
     tabPane.getTabs().addListener(
       ( final ListChangeListener.Change<? extends Tab> listener ) -> {
         while( listener.next() ) {
           if( listener.wasAdded() ) {
             final var tabs = listener.getAddedSubList();
             tabs.forEach( ( tab ) -> {
               final var node = tab.getContent();
               if( node instanceof TextEditor ) {
                 initScrollEventListener( tab );
+              }
             } );
             // Select and give focus to the last tab opened.
             final var index = tabs.size() - 1;
             if( index >= 0 ) {
               final var tab = tabs.get( index );
               tabPane.getSelectionModel().select( tab );
               tab.getContent().requestFocus();
+            }
+          }
+        }
+      }
     );
+  }
   /**
    * Synchronizes scrollbar positions between the given {@link Tab} that
    * contains an instance of {@link TextEditor} and {@link HtmlPreview} pane.
+   *
    * @param tab The container for an instance of {@link TextEditor}.
    */
   private void initScrollEventListener( final Tab tab ) {
     final var editor = (TextEditor) tab.getContent();
     final var scrollPane = editor.getScrollPane();
     final var scrollBar = mPreview.getVerticalScrollBar();
     final var handler = new ScrollEventHandler( scrollPane, scrollBar );
     handler.enabledProperty().bind( tab.selectedProperty() );
+  }
   private void addTabPane( final int index, final TabPane tabPane ) {
     final var items = getItems();
     if( !items.contains( tabPane ) ) {
       items.add( index, tabPane );
+    }
+  }
   private void addTabPane( final TabPane tabPane ) {
     addTabPane( getItems().size(), tabPane );
+  }
   public ProcessorContext createProcessorContext() {
     return createProcessorContext( null, NONE );
+  }
   public ProcessorContext createProcessorContext(
     final Path exportPath, final ExportFormat format ) {
     final var editor = getActiveTextEditor();
     return createProcessorContext(
       editor.getPath(), exportPath, format, editor.getCaret() );
+  }
   private ProcessorContext createProcessorContext(
     final Path path, final Caret caret ) {
     return createProcessorContext( path, null, ExportFormat.NONE, caret );
+  }
   /**
    * @param path       Used by {@link ProcessorFactory} to determine
    *                   {@link Processor} type to create based on file type.
    * @param exportPath Used when exporting to a PDF file (binary).
    * @param format     Used when processors export to a new text format.
    * @param caret      Used by {@link CaretExtension} to add ID attribute into
    *                   preview document for scrollbar synchronization.
    * @return A new {@link ProcessorContext} to use when creating an instance of
    * {@link Processor}.
    */
   private ProcessorContext createProcessorContext(
     final Path path, final Path exportPath, final ExportFormat format,
     final Caret caret ) {
     return new ProcessorContext(
       mPreview, mResolvedMap, path, exportPath, format, mWorkspace, caret
     );
+  }
   private TextResource createTextResource( final File file ) {
     // TODO: Create PlainTextEditor that's returned by default.
     return MediaType.valueFrom( file ) == TEXT_YAML
       ? createDefinitionEditor( file )
       : createMarkdownEditor( file );
+  }
   /**
    * Creates an instance of {@link MarkdownEditor} that listens for both
    * caret change events and text change events. Text change events must
    * take priority over caret change events because it's possible to change
    * the text without moving the caret (e.g., delete selected text).
+   *
    * @param file The file containing contents for the text editor.
    * @return A non-null text editor.
    */
   private TextResource createMarkdownEditor( final File file ) {
     final var path = file.toPath();
     final var editor = new MarkdownEditor( file, getWorkspace() );
     final var caret = editor.getCaret();
     final var context = createProcessorContext( path, caret );
     mProcessors.computeIfAbsent( editor, p -> createProcessors( context ) );
     editor.addDirtyListener( ( c, o, n ) -> {
       if( n ) {
         // Reset the status to OK after changing the text.
         clue();
         // Processing the text may update the status bar.
         process( getActiveTextEditor() );
+      }
     } );
     editor.addEventListener(
       keyPressed( SPACE, CONTROL_DOWN ), this::autoinsert
     );
     // Set the active editor, which refreshes the preview panel.
     mActiveTextEditor.set( editor );
     return editor;
+  }
   /**
    * Delegates to {@link #autoinsert()}.
+   *
    * @param event Ignored.
    */
   @SuppressWarnings( "unused" )
   private void autoinsert( final KeyEvent event ) {
     autoinsert();

M src/main/java/com/keenwrite/MainScene.java

     appPane.setBottom( mStatusBar );
     final var watchThread = new Thread( mFileWatchService );
     watchThread.setDaemon( true );
     watchThread.start();
     final var fileWatcher = new Thread( mFileWatchService );
     fileWatcher.setDaemon( true );
     fileWatcher.start();
     mScene = createScene( appPane );

M src/main/java/com/keenwrite/constants/Constants.java

   /**
    * Custom CSS to apply.
    * Custom JavaFX CSS to apply to user interface.
    */
   public static final File SKIN_CUSTOM_DEFAULT = null;
   /**
    * Custom HTML CSS to apply to HTML preview panel.
    */
   public static final File PREVIEW_CUSTOM_DEFAULT = null;
   /**

M src/main/java/com/keenwrite/dom/DocumentParser.java

       input.setEncoding( UTF_8.toString() );
       input.setCharacterStream( reader );
       return sDocumentBuilder.parse( input );
     } catch( final Exception ex ) {
       clue( ex );
       return sDocumentBuilder.newDocument();
+    }
    */
   public static void walk(
     final Document document, final String xpath,
     final Document document,
     final String xpath,
     final Consumer<Node> consumer ) {
     assert document != null;
     final Document document, final Map.Entry<String, String> entry ) {
     final var node = document.createElement( "meta" );
     node.setAttribute( "name", entry.getKey() );
     node.setAttribute( "content", entry.getValue() );
       sTransformer.transform( domSource, result );
       return writer.toString();
     } catch( final Exception ex ) {
     try( final var writer = new StringWriter() ) {
       sTransformer.transform(
         new DOMSource( root ), new StreamResult( writer ) );
         new DOMSource( root ), new StreamResult( writer )
       );
       return writer.toString();
+    }
   public static String decorate( final String html ) {
     return
       "<html><head><title> </title></head><body>" + html + "</body></html>";
       "<html><head><title> </title><meta charset='utf8'/></head><body>"
         + html
         + "</body></html>";
+  }

M src/main/java/com/keenwrite/preferences/PreferencesController.java

 import com.dlsc.preferencesfx.util.StorageHandler;
 import com.dlsc.preferencesfx.view.NavigationView;
 import javafx.beans.property.BooleanProperty;
 import javafx.beans.property.DoubleProperty;
 import javafx.beans.property.ObjectProperty;
 import javafx.beans.property.StringProperty;
 import javafx.event.EventHandler;
 import javafx.scene.Node;
 import javafx.scene.control.Button;
 import javafx.scene.control.DialogPane;
 import javafx.scene.control.Label;
 import org.controlsfx.control.MasterDetailPane;
 import java.io.File;
 import static com.dlsc.formsfx.model.structure.Field.ofStringType;
 import static com.dlsc.preferencesfx.PreferencesFxEvent.EVENT_PREFERENCES_SAVED;
 import static com.keenwrite.Messages.get;
 import static com.keenwrite.constants.GraphicsConstants.ICON_DIALOG;
 import static com.keenwrite.preferences.LocaleProperty.localeListProperty;
 import static com.keenwrite.preferences.SkinProperty.skinListProperty;
 import static com.keenwrite.preferences.WorkspaceKeys.*;
 import static javafx.scene.control.ButtonType.CANCEL;
 import static javafx.scene.control.ButtonType.OK;
 /**
  * Provides the ability for users to configure their preferences. This links
  * the {@link Workspace} model with the {@link PreferencesFx} view, in MVC.
  */
 @SuppressWarnings( "SameParameterValue" )
 public final class PreferencesController {
   private final Workspace mWorkspace;
   private final PreferencesFx mPreferencesFx;
   public PreferencesController( final Workspace workspace ) {
     mWorkspace = workspace;
     // All properties must be initialized before creating the dialog.
     mPreferencesFx = createPreferencesFx();
     initKeyEventHandler( mPreferencesFx );
+  }
   /**
    * Display the user preferences settings dialog (non-modal).
    */
   public void show() {
     getPreferencesFx().show( false );
+  }
   /**
    * Call to persist the settings. Strictly speaking, this could watch on
    * all values for external changes then save automatically.
    */
   public void save() {
     getPreferencesFx().saveSettings();
+  }
   /**
    * Delegates to the {@link PreferencesFx} event handler for monitoring
    * save events.
+   *
    * @param eventHandler The handler to call when the preferences are saved.
    */
   public void addSaveEventHandler(
     final EventHandler<? super PreferencesFxEvent> eventHandler ) {
     getPreferencesFx().addEventHandler( EVENT_PREFERENCES_SAVED, eventHandler );
+  }
   private StringField createFontNameField(
     final StringProperty fontName, final DoubleProperty fontSize ) {
     final var control = new SimpleFontControl( "Change" );
     control.fontSizeProperty().addListener( ( c, o, n ) -> {
       if( n != null ) {
         fontSize.set( n.doubleValue() );
+      }
     } );
     return ofStringType( fontName ).render( control );
+  }
   /**
    * Creates the preferences dialog based using {@link XmlStorageHandler} and
    * numerous {@link Category} objects.
+   *
    * @return A component for editing preferences.
    * @throws RuntimeException Could not construct the {@link PreferencesFx}
    *                          object (e.g., illegal access permissions,
    *                          unmapped XML resource).
    */
   private PreferencesFx createPreferencesFx() {
     return PreferencesFx.of( createStorageHandler(), createCategories() )
                         .instantPersistent( false )
                         .dialogIcon( ICON_DIALOG );
+  }
   private StorageHandler createStorageHandler() {
     return new XmlStorageHandler();
+  }
   private Category[] createCategories() {
     return new Category[]{
       Category.of(
         get( KEY_DOC ),
         Group.of(
           get( KEY_DOC_TITLE ),
           Setting.of( label( KEY_DOC_TITLE ) ),
           Setting.of( title( KEY_DOC_TITLE ),
                       stringProperty( KEY_DOC_TITLE ) )
         ),
         Group.of(
           get( KEY_DOC_AUTHOR ),
           Setting.of( label( KEY_DOC_AUTHOR ) ),
           Setting.of( title( KEY_DOC_AUTHOR ),
                       stringProperty( KEY_DOC_AUTHOR ) )
         ),
         Group.of(
           get( KEY_DOC_BYLINE ),
           Setting.of( label( KEY_DOC_BYLINE ) ),
           Setting.of( title( KEY_DOC_BYLINE ),
                       stringProperty( KEY_DOC_BYLINE ) )
         ),
         Group.of(
           get( KEY_DOC_ADDRESS ),
           Setting.of( label( KEY_DOC_ADDRESS ) ),
           createMultilineSetting( "Address", KEY_DOC_ADDRESS )
         ),
         Group.of(
           get( KEY_DOC_PHONE ),
           Setting.of( label( KEY_DOC_PHONE ) ),
           Setting.of( title( KEY_DOC_PHONE ),
                       stringProperty( KEY_DOC_PHONE ) )
         ),
         Group.of(
           get( KEY_DOC_EMAIL ),
           Setting.of( label( KEY_DOC_EMAIL ) ),
           Setting.of( title( KEY_DOC_EMAIL ),
                       stringProperty( KEY_DOC_EMAIL ) )
         ),
         Group.of(
           get( KEY_DOC_KEYWORDS ),
           Setting.of( label( KEY_DOC_KEYWORDS ) ),
           Setting.of( title( KEY_DOC_KEYWORDS ),
                       stringProperty( KEY_DOC_KEYWORDS ) )
         ),
         Group.of(
           get( KEY_DOC_COPYRIGHT ),
           Setting.of( label( KEY_DOC_COPYRIGHT ) ),
           Setting.of( title( KEY_DOC_COPYRIGHT ),
                       stringProperty( KEY_DOC_COPYRIGHT ) )
         ),
         Group.of(
           get( KEY_DOC_DATE ),
           Setting.of( label( KEY_DOC_DATE ) ),
           Setting.of( title( KEY_DOC_DATE ),
                       stringProperty( KEY_DOC_DATE ) )
+        )
       ),
       Category.of(
         get( KEY_TYPESET ),
         Group.of(
           get( KEY_TYPESET_CONTEXT ),
           Setting.of( label( KEY_TYPESET_CONTEXT_THEMES_PATH ) ),
           Setting.of( title( KEY_TYPESET_CONTEXT_THEMES_PATH ),
                       fileProperty( KEY_TYPESET_CONTEXT_THEMES_PATH ), true ),
           Setting.of( label( KEY_TYPESET_CONTEXT_CLEAN ) ),
           Setting.of( title( KEY_TYPESET_CONTEXT_CLEAN ),
                       booleanProperty( KEY_TYPESET_CONTEXT_CLEAN ) )
         ),
         Group.of(
           get( KEY_TYPESET_TYPOGRAPHY ),
           Setting.of( label( KEY_TYPESET_TYPOGRAPHY_QUOTES ) ),
           Setting.of( title( KEY_TYPESET_TYPOGRAPHY_QUOTES ),
                       booleanProperty( KEY_TYPESET_TYPOGRAPHY_QUOTES ) )
+        )
       ),
       Category.of(
         get( KEY_R ),
         Group.of(
           get( KEY_R_DIR ),
           Setting.of( label( KEY_R_DIR,
                              stringProperty( KEY_DEF_DELIM_BEGAN ).get(),
                              stringProperty( KEY_DEF_DELIM_ENDED ).get() ) ),
           Setting.of( title( KEY_R_DIR ),
                       fileProperty( KEY_R_DIR ), true )
         ),
         Group.of(
           get( KEY_R_SCRIPT ),
           Setting.of( label( KEY_R_SCRIPT ) ),
           createMultilineSetting( "Script", KEY_R_SCRIPT )
         ),
         Group.of(
           get( KEY_R_DELIM_BEGAN ),
           Setting.of( label( KEY_R_DELIM_BEGAN ) ),
           Setting.of( title( KEY_R_DELIM_BEGAN ),
                       stringProperty( KEY_R_DELIM_BEGAN ) )
         ),
         Group.of(
           get( KEY_R_DELIM_ENDED ),
           Setting.of( label( KEY_R_DELIM_ENDED ) ),
           Setting.of( title( KEY_R_DELIM_ENDED ),
                       stringProperty( KEY_R_DELIM_ENDED ) )
+        )
       ),
       Category.of(
         get( KEY_IMAGES ),
         Group.of(
           get( KEY_IMAGES_DIR ),
           Setting.of( label( KEY_IMAGES_DIR ) ),
           Setting.of( title( KEY_IMAGES_DIR ),
                       fileProperty( KEY_IMAGES_DIR ), true )
         ),
         Group.of(
           get( KEY_IMAGES_ORDER ),
           Setting.of( label( KEY_IMAGES_ORDER ) ),
           Setting.of( title( KEY_IMAGES_ORDER ),
                       stringProperty( KEY_IMAGES_ORDER ) )
         ),
         Group.of(
           get( KEY_IMAGES_RESIZE ),
           Setting.of( label( KEY_IMAGES_RESIZE ) ),
           Setting.of( title( KEY_IMAGES_RESIZE ),
                       booleanProperty( KEY_IMAGES_RESIZE ) )
         ),
         Group.of(
           get( KEY_IMAGES_SERVER ),
           Setting.of( label( KEY_IMAGES_SERVER ) ),
           Setting.of( title( KEY_IMAGES_SERVER ),
                       stringProperty( KEY_IMAGES_SERVER ) )
+        )
       ),
       Category.of(
         get( KEY_DEF ),
         Group.of(
           get( KEY_DEF_PATH ),
           Setting.of( label( KEY_DEF_PATH ) ),
           Setting.of( title( KEY_DEF_PATH ),
                       fileProperty( KEY_DEF_PATH ), false )
         ),
         Group.of(
           get( KEY_DEF_DELIM_BEGAN ),
           Setting.of( label( KEY_DEF_DELIM_BEGAN ) ),
           Setting.of( title( KEY_DEF_DELIM_BEGAN ),
                       stringProperty( KEY_DEF_DELIM_BEGAN ) )
         ),
         Group.of(
           get( KEY_DEF_DELIM_ENDED ),
           Setting.of( label( KEY_DEF_DELIM_ENDED ) ),
           Setting.of( title( KEY_DEF_DELIM_ENDED ),
                       stringProperty( KEY_DEF_DELIM_ENDED ) )
+        )
       ),
       Category.of(
         get( KEY_UI_FONT ),
         Group.of(
           get( KEY_UI_FONT_EDITOR ),
           Setting.of( label( KEY_UI_FONT_EDITOR_NAME ) ),
           Setting.of( title( KEY_UI_FONT_EDITOR_NAME ),
                       createFontNameField(
                         stringProperty( KEY_UI_FONT_EDITOR_NAME ),
                         doubleProperty( KEY_UI_FONT_EDITOR_SIZE ) ),
                       stringProperty( KEY_UI_FONT_EDITOR_NAME ) ),
           Setting.of( label( KEY_UI_FONT_EDITOR_SIZE ) ),
           Setting.of( title( KEY_UI_FONT_EDITOR_SIZE ),
                       doubleProperty( KEY_UI_FONT_EDITOR_SIZE ) )
         ),
         Group.of(
           get( KEY_UI_FONT_PREVIEW ),
           Setting.of( label( KEY_UI_FONT_PREVIEW_NAME ) ),
           Setting.of( title( KEY_UI_FONT_PREVIEW_NAME ),
                       createFontNameField(
                         stringProperty( KEY_UI_FONT_PREVIEW_NAME ),
                         doubleProperty( KEY_UI_FONT_PREVIEW_SIZE ) ),
                       stringProperty( KEY_UI_FONT_PREVIEW_NAME ) ),
           Setting.of( label( KEY_UI_FONT_PREVIEW_SIZE ) ),
           Setting.of( title( KEY_UI_FONT_PREVIEW_SIZE ),
                       doubleProperty( KEY_UI_FONT_PREVIEW_SIZE ) ),
           Setting.of( label( KEY_UI_FONT_PREVIEW_MONO_NAME ) ),
           Setting.of( title( KEY_UI_FONT_PREVIEW_MONO_NAME ),
                       createFontNameField(
                         stringProperty( KEY_UI_FONT_PREVIEW_MONO_NAME ),
                         doubleProperty( KEY_UI_FONT_PREVIEW_MONO_SIZE ) ),
                       stringProperty( KEY_UI_FONT_PREVIEW_MONO_NAME ) ),
           Setting.of( label( KEY_UI_FONT_PREVIEW_MONO_SIZE ) ),
           Setting.of( title( KEY_UI_FONT_PREVIEW_MONO_SIZE ),
                       doubleProperty( KEY_UI_FONT_PREVIEW_MONO_SIZE ) )
+        )
       ),
       Category.of(
         get( KEY_UI_SKIN ),
         Group.of(
           get( KEY_UI_SKIN_SELECTION ),
           Setting.of( label( KEY_UI_SKIN_SELECTION ) ),
           Setting.of( title( KEY_UI_SKIN_SELECTION ),
                       skinListProperty(),
                       skinProperty( KEY_UI_SKIN_SELECTION ) )
         ),
         Group.of(
           get( KEY_UI_SKIN_CUSTOM ),
           Setting.of( label( KEY_UI_SKIN_CUSTOM ) ),
           Setting.of( title( KEY_UI_SKIN_CUSTOM ),
                       fileProperty( KEY_UI_SKIN_CUSTOM ), false )
+        )
       ),
       Category.of(
         get( KEY_LANGUAGE ),
         Group.of(
           get( KEY_LANGUAGE_LOCALE ),
           Setting.of( label( KEY_LANGUAGE_LOCALE ) ),
           Setting.of( title( KEY_LANGUAGE_LOCALE ),
                       localeListProperty(),
                       localeProperty( KEY_LANGUAGE_LOCALE ) )
+        )
       )};
+  }
   @SuppressWarnings( "unchecked" )
   private Setting<StringField, StringProperty> createMultilineSetting(
     final String description, final Key property ) {
     final Setting<StringField, StringProperty> setting =
       Setting.of( description, stringProperty( property ) );
     final var field = setting.getElement();
     field.multiline( true );
     return setting;
+  }
   private void initKeyEventHandler( final PreferencesFx preferences ) {
     final var view = preferences.getView();
     final var nodes = view.getChildrenUnmodifiable();
     final var master = (MasterDetailPane) nodes.get( 0 );
     final var detail = (NavigationView) master.getDetailNode();
     final var pane = (DialogPane) view.getParent();
     detail.setOnKeyReleased( ( key ) -> {
       switch( key.getCode() ) {
         case ENTER -> ((Button) pane.lookupButton( OK )).fire();
         case ESCAPE -> ((Button) pane.lookupButton( CANCEL )).fire();
+      }
     } );
+  }
   /**
    * Creates a label for the given key after interpolating its value.
+   *
    * @param key The key to find in the resource bundle.
    * @return The value of the key as a label.
    */
   private Node label( final Key key ) {
     return label( key, (String[]) null );
+  }
   private Node label( final Key key, final String... values ) {
     return new Label( get( key.toString() + ".desc", (Object[]) values ) );
+  }
   private String title( final Key key ) {
     return get( key.toString() + ".title" );
+  }
   private ObjectProperty<File> fileProperty( final Key key ) {
     return mWorkspace.fileProperty( key );
+  }
   private StringProperty stringProperty( final Key key ) {
     return mWorkspace.stringProperty( key );
+  }
   private BooleanProperty booleanProperty( final Key key ) {
     return mWorkspace.booleanProperty( key );
 import javafx.beans.property.*;
 import javafx.event.EventHandler;
 import javafx.scene.Node;
 import javafx.scene.control.Button;
 import javafx.scene.control.DialogPane;
 import javafx.scene.control.Label;
 import org.controlsfx.control.MasterDetailPane;
 import java.io.File;
 import static com.dlsc.formsfx.model.structure.Field.ofStringType;
 import static com.dlsc.preferencesfx.PreferencesFxEvent.EVENT_PREFERENCES_SAVED;
 import static com.keenwrite.Messages.get;
 import static com.keenwrite.constants.GraphicsConstants.ICON_DIALOG;
 import static com.keenwrite.preferences.LocaleProperty.localeListProperty;
 import static com.keenwrite.preferences.SkinProperty.skinListProperty;
 import static com.keenwrite.preferences.WorkspaceKeys.*;
 import static javafx.scene.control.ButtonType.CANCEL;
 import static javafx.scene.control.ButtonType.OK;
 /**
  * Provides the ability for users to configure their preferences. This links
  * the {@link Workspace} model with the {@link PreferencesFx} view, in MVC.
  */
 @SuppressWarnings( "SameParameterValue" )
 public final class PreferencesController {
   private final Workspace mWorkspace;
   private final PreferencesFx mPreferencesFx;
   public PreferencesController( final Workspace workspace ) {
     mWorkspace = workspace;
     // All properties must be initialized before creating the dialog.
     mPreferencesFx = createPreferencesFx();
     initKeyEventHandler( mPreferencesFx );
+  }
   /**
    * Display the user preferences settings dialog (non-modal).
    */
   public void show() {
     getPreferencesFx().show( false );
+  }
   /**
    * Call to persist the settings. Strictly speaking, this could watch on
    * all values for external changes then save automatically.
    */
   public void save() {
     getPreferencesFx().saveSettings();
+  }
   /**
    * Delegates to the {@link PreferencesFx} event handler for monitoring
    * save events.
+   *
    * @param eventHandler The handler to call when the preferences are saved.
    */
   public void addSaveEventHandler(
     final EventHandler<? super PreferencesFxEvent> eventHandler ) {
     getPreferencesFx().addEventHandler( EVENT_PREFERENCES_SAVED, eventHandler );
+  }
   private StringField createFontNameField(
     final StringProperty fontName, final DoubleProperty fontSize ) {
     final var control = new SimpleFontControl( "Change" );
     control.fontSizeProperty().addListener( ( c, o, n ) -> {
       if( n != null ) {
         fontSize.set( n.doubleValue() );
+      }
     } );
     return ofStringType( fontName ).render( control );
+  }
   /**
    * Creates the preferences dialog based using {@link XmlStorageHandler} and
    * numerous {@link Category} objects.
+   *
    * @return A component for editing preferences.
    * @throws RuntimeException Could not construct the {@link PreferencesFx}
    *                          object (e.g., illegal access permissions,
    *                          unmapped XML resource).
    */
   private PreferencesFx createPreferencesFx() {
     return PreferencesFx.of( createStorageHandler(), createCategories() )
                         .instantPersistent( false )
                         .dialogIcon( ICON_DIALOG );
+  }
   private StorageHandler createStorageHandler() {
     return new XmlStorageHandler();
+  }
   private Category[] createCategories() {
     return new Category[]{
       Category.of(
         get( KEY_DOC ),
         Group.of(
           get( KEY_DOC_TITLE ),
           Setting.of( label( KEY_DOC_TITLE ) ),
           Setting.of( title( KEY_DOC_TITLE ),
                       stringProperty( KEY_DOC_TITLE ) )
         ),
         Group.of(
           get( KEY_DOC_AUTHOR ),
           Setting.of( label( KEY_DOC_AUTHOR ) ),
           Setting.of( title( KEY_DOC_AUTHOR ),
                       stringProperty( KEY_DOC_AUTHOR ) )
         ),
         Group.of(
           get( KEY_DOC_BYLINE ),
           Setting.of( label( KEY_DOC_BYLINE ) ),
           Setting.of( title( KEY_DOC_BYLINE ),
                       stringProperty( KEY_DOC_BYLINE ) )
         ),
         Group.of(
           get( KEY_DOC_ADDRESS ),
           Setting.of( label( KEY_DOC_ADDRESS ) ),
           createMultilineSetting( "Address", KEY_DOC_ADDRESS )
         ),
         Group.of(
           get( KEY_DOC_PHONE ),
           Setting.of( label( KEY_DOC_PHONE ) ),
           Setting.of( title( KEY_DOC_PHONE ),
                       stringProperty( KEY_DOC_PHONE ) )
         ),
         Group.of(
           get( KEY_DOC_EMAIL ),
           Setting.of( label( KEY_DOC_EMAIL ) ),
           Setting.of( title( KEY_DOC_EMAIL ),
                       stringProperty( KEY_DOC_EMAIL ) )
         ),
         Group.of(
           get( KEY_DOC_KEYWORDS ),
           Setting.of( label( KEY_DOC_KEYWORDS ) ),
           Setting.of( title( KEY_DOC_KEYWORDS ),
                       stringProperty( KEY_DOC_KEYWORDS ) )
         ),
         Group.of(
           get( KEY_DOC_COPYRIGHT ),
           Setting.of( label( KEY_DOC_COPYRIGHT ) ),
           Setting.of( title( KEY_DOC_COPYRIGHT ),
                       stringProperty( KEY_DOC_COPYRIGHT ) )
         ),
         Group.of(
           get( KEY_DOC_DATE ),
           Setting.of( label( KEY_DOC_DATE ) ),
           Setting.of( title( KEY_DOC_DATE ),
                       stringProperty( KEY_DOC_DATE ) )
+        )
       ),
       Category.of(
         get( KEY_TYPESET ),
         Group.of(
           get( KEY_TYPESET_CONTEXT ),
           Setting.of( label( KEY_TYPESET_CONTEXT_THEMES_PATH ) ),
           Setting.of( title( KEY_TYPESET_CONTEXT_THEMES_PATH ),
                       fileProperty( KEY_TYPESET_CONTEXT_THEMES_PATH ), true ),
           Setting.of( label( KEY_TYPESET_CONTEXT_CLEAN ) ),
           Setting.of( title( KEY_TYPESET_CONTEXT_CLEAN ),
                       booleanProperty( KEY_TYPESET_CONTEXT_CLEAN ) )
         ),
         Group.of(
           get( KEY_TYPESET_TYPOGRAPHY ),
           Setting.of( label( KEY_TYPESET_TYPOGRAPHY_QUOTES ) ),
           Setting.of( title( KEY_TYPESET_TYPOGRAPHY_QUOTES ),
                       booleanProperty( KEY_TYPESET_TYPOGRAPHY_QUOTES ) )
+        )
       ),
       Category.of(
         get( KEY_EDITOR ),
         Group.of(
           get( KEY_EDITOR_AUTOSAVE ),
           Setting.of( label( KEY_EDITOR_AUTOSAVE ) ),
           Setting.of( title( KEY_EDITOR_AUTOSAVE ),
                       integerProperty( KEY_EDITOR_AUTOSAVE ) )
+        )
       ),
       Category.of(
         get( KEY_R ),
         Group.of(
           get( KEY_R_DIR ),
           Setting.of( label( KEY_R_DIR,
                              stringProperty( KEY_DEF_DELIM_BEGAN ).get(),
                              stringProperty( KEY_DEF_DELIM_ENDED ).get() ) ),
           Setting.of( title( KEY_R_DIR ),
                       fileProperty( KEY_R_DIR ), true )
         ),
         Group.of(
           get( KEY_R_SCRIPT ),
           Setting.of( label( KEY_R_SCRIPT ) ),
           createMultilineSetting( "Script", KEY_R_SCRIPT )
         ),
         Group.of(
           get( KEY_R_DELIM_BEGAN ),
           Setting.of( label( KEY_R_DELIM_BEGAN ) ),
           Setting.of( title( KEY_R_DELIM_BEGAN ),
                       stringProperty( KEY_R_DELIM_BEGAN ) )
         ),
         Group.of(
           get( KEY_R_DELIM_ENDED ),
           Setting.of( label( KEY_R_DELIM_ENDED ) ),
           Setting.of( title( KEY_R_DELIM_ENDED ),
                       stringProperty( KEY_R_DELIM_ENDED ) )
+        )
       ),
       Category.of(
         get( KEY_IMAGES ),
         Group.of(
           get( KEY_IMAGES_DIR ),
           Setting.of( label( KEY_IMAGES_DIR ) ),
           Setting.of( title( KEY_IMAGES_DIR ),
                       fileProperty( KEY_IMAGES_DIR ), true )
         ),
         Group.of(
           get( KEY_IMAGES_ORDER ),
           Setting.of( label( KEY_IMAGES_ORDER ) ),
           Setting.of( title( KEY_IMAGES_ORDER ),
                       stringProperty( KEY_IMAGES_ORDER ) )
         ),
         Group.of(
           get( KEY_IMAGES_RESIZE ),
           Setting.of( label( KEY_IMAGES_RESIZE ) ),
           Setting.of( title( KEY_IMAGES_RESIZE ),
                       booleanProperty( KEY_IMAGES_RESIZE ) )
         ),
         Group.of(
           get( KEY_IMAGES_SERVER ),
           Setting.of( label( KEY_IMAGES_SERVER ) ),
           Setting.of( title( KEY_IMAGES_SERVER ),
                       stringProperty( KEY_IMAGES_SERVER ) )
+        )
       ),
       Category.of(
         get( KEY_DEF ),
         Group.of(
           get( KEY_DEF_PATH ),
           Setting.of( label( KEY_DEF_PATH ) ),
           Setting.of( title( KEY_DEF_PATH ),
                       fileProperty( KEY_DEF_PATH ), false )
         ),
         Group.of(
           get( KEY_DEF_DELIM_BEGAN ),
           Setting.of( label( KEY_DEF_DELIM_BEGAN ) ),
           Setting.of( title( KEY_DEF_DELIM_BEGAN ),
                       stringProperty( KEY_DEF_DELIM_BEGAN ) )
         ),
         Group.of(
           get( KEY_DEF_DELIM_ENDED ),
           Setting.of( label( KEY_DEF_DELIM_ENDED ) ),
           Setting.of( title( KEY_DEF_DELIM_ENDED ),
                       stringProperty( KEY_DEF_DELIM_ENDED ) )
+        )
       ),
       Category.of(
         get( KEY_UI_FONT ),
         Group.of(
           get( KEY_UI_FONT_EDITOR ),
           Setting.of( label( KEY_UI_FONT_EDITOR_NAME ) ),
           Setting.of( title( KEY_UI_FONT_EDITOR_NAME ),
                       createFontNameField(
                         stringProperty( KEY_UI_FONT_EDITOR_NAME ),
                         doubleProperty( KEY_UI_FONT_EDITOR_SIZE ) ),
                       stringProperty( KEY_UI_FONT_EDITOR_NAME ) ),
           Setting.of( label( KEY_UI_FONT_EDITOR_SIZE ) ),
           Setting.of( title( KEY_UI_FONT_EDITOR_SIZE ),
                       doubleProperty( KEY_UI_FONT_EDITOR_SIZE ) )
         ),
         Group.of(
           get( KEY_UI_FONT_PREVIEW ),
           Setting.of( label( KEY_UI_FONT_PREVIEW_NAME ) ),
           Setting.of( title( KEY_UI_FONT_PREVIEW_NAME ),
                       createFontNameField(
                         stringProperty( KEY_UI_FONT_PREVIEW_NAME ),
                         doubleProperty( KEY_UI_FONT_PREVIEW_SIZE ) ),
                       stringProperty( KEY_UI_FONT_PREVIEW_NAME ) ),
           Setting.of( label( KEY_UI_FONT_PREVIEW_SIZE ) ),
           Setting.of( title( KEY_UI_FONT_PREVIEW_SIZE ),
                       doubleProperty( KEY_UI_FONT_PREVIEW_SIZE ) ),
           Setting.of( label( KEY_UI_FONT_PREVIEW_MONO_NAME ) ),
           Setting.of( title( KEY_UI_FONT_PREVIEW_MONO_NAME ),
                       createFontNameField(
                         stringProperty( KEY_UI_FONT_PREVIEW_MONO_NAME ),
                         doubleProperty( KEY_UI_FONT_PREVIEW_MONO_SIZE ) ),
                       stringProperty( KEY_UI_FONT_PREVIEW_MONO_NAME ) ),
           Setting.of( label( KEY_UI_FONT_PREVIEW_MONO_SIZE ) ),
           Setting.of( title( KEY_UI_FONT_PREVIEW_MONO_SIZE ),
                       doubleProperty( KEY_UI_FONT_PREVIEW_MONO_SIZE ) )
+        )
       ),
       Category.of(
         get( KEY_UI_SKIN ),
         Group.of(
           get( KEY_UI_SKIN_SELECTION ),
           Setting.of( label( KEY_UI_SKIN_SELECTION ) ),
           Setting.of( title( KEY_UI_SKIN_SELECTION ),
                       skinListProperty(),
                       skinProperty( KEY_UI_SKIN_SELECTION ) )
         ),
         Group.of(
           get( KEY_UI_SKIN_CUSTOM ),
           Setting.of( label( KEY_UI_SKIN_CUSTOM ) ),
           Setting.of( title( KEY_UI_SKIN_CUSTOM ),
                       fileProperty( KEY_UI_SKIN_CUSTOM ), false )
+        )
       ),
       Category.of(
         get( KEY_UI_PREVIEW ),
         Group.of(
           get( KEY_UI_PREVIEW_STYLESHEET ),
           Setting.of( label( KEY_UI_PREVIEW_STYLESHEET ) ),
           Setting.of( title( KEY_UI_PREVIEW_STYLESHEET ),
                       fileProperty( KEY_UI_PREVIEW_STYLESHEET ), false )
+        )
       ),
       Category.of(
         get( KEY_LANGUAGE ),
         Group.of(
           get( KEY_LANGUAGE_LOCALE ),
           Setting.of( label( KEY_LANGUAGE_LOCALE ) ),
           Setting.of( title( KEY_LANGUAGE_LOCALE ),
                       localeListProperty(),
                       localeProperty( KEY_LANGUAGE_LOCALE ) )
+        )
       )};
+  }
   @SuppressWarnings( "unchecked" )
   private Setting<StringField, StringProperty> createMultilineSetting(
     final String description, final Key property ) {
     final Setting<StringField, StringProperty> setting =
       Setting.of( description, stringProperty( property ) );
     final var field = setting.getElement();
     field.multiline( true );
     return setting;
+  }
   private void initKeyEventHandler( final PreferencesFx preferences ) {
     final var view = preferences.getView();
     final var nodes = view.getChildrenUnmodifiable();
     final var master = (MasterDetailPane) nodes.get( 0 );
     final var detail = (NavigationView) master.getDetailNode();
     final var pane = (DialogPane) view.getParent();
     detail.setOnKeyReleased( ( key ) -> {
       switch( key.getCode() ) {
         case ENTER -> ((Button) pane.lookupButton( OK )).fire();
         case ESCAPE -> ((Button) pane.lookupButton( CANCEL )).fire();
+      }
     } );
+  }
   /**
    * Creates a label for the given key after interpolating its value.
+   *
    * @param key The key to find in the resource bundle.
    * @return The value of the key as a label.
    */
   private Node label( final Key key ) {
     return label( key, (String[]) null );
+  }
   private Node label( final Key key, final String... values ) {
     return new Label( get( key.toString() + ".desc", (Object[]) values ) );
+  }
   private String title( final Key key ) {
     return get( key.toString() + ".title" );
+  }
   private ObjectProperty<File> fileProperty( final Key key ) {
     return mWorkspace.fileProperty( key );
+  }
   private StringProperty stringProperty( final Key key ) {
     return mWorkspace.stringProperty( key );
+  }
   private BooleanProperty booleanProperty( final Key key ) {
     return mWorkspace.booleanProperty( key );
+  }
   @SuppressWarnings( "SameParameterValue" )
   private IntegerProperty integerProperty( final Key key ) {
     return mWorkspace.integerProperty( key );
+  }

M src/main/java/com/keenwrite/preferences/Workspace.java

     entry( KEY_DOC_DATE, asStringProperty( getDate() ) ),
     entry( KEY_EDITOR_AUTOSAVE, asIntegerProperty( 30 ) ),
     entry( KEY_R_SCRIPT, asStringProperty( "" ) ),
     entry( KEY_R_DIR, asFileProperty( USER_DIRECTORY ) ),
     entry( KEY_UI_SKIN_SELECTION, asSkinProperty( SKIN_DEFAULT ) ),
     entry( KEY_UI_SKIN_CUSTOM, asFileProperty( SKIN_CUSTOM_DEFAULT ) ),
     entry( KEY_UI_PREVIEW_STYLESHEET, asFileProperty( PREVIEW_CUSTOM_DEFAULT ) ),
     entry( KEY_LANGUAGE_LOCALE, asLocaleProperty( LOCALE_DEFAULT ) ),
   private StringProperty asStringProperty( final String defaultValue ) {
     return new SimpleStringProperty( defaultValue );
+  }
   @SuppressWarnings( "SameParameterValue" )
   private IntegerProperty asIntegerProperty( final int defaultValue ) {
     return new SimpleIntegerProperty( defaultValue );
+  }
       LocaleProperty.class, LocaleProperty::parseLocale,
       SimpleBooleanProperty.class, Boolean::parseBoolean,
       SimpleIntegerProperty.class, Integer::parseInt,
       SimpleDoubleProperty.class, Double::parseDouble,
       SimpleFloatProperty.class, Float::parseFloat,
     assert key != null;
     return (Boolean) valuesProperty( key ).getValue();
+  }
   /**
    * Returns the {@link Integer} preference value associated with the given
    * {@link Key}. The caller must be sure that the given {@link Key} is
    * associated with a value that matches the return type.
+   *
    * @param key The {@link Key} associated with a preference value.
    * @return The value associated with the given {@link Key}.
    */
   public int toInteger( final Key key ) {
     assert key != null;
     return (Integer) valuesProperty( key ).getValue();
+  }
     assert ended != null;
     return new Tokens( stringProperty( began ), stringProperty( ended ) );
+  }
   @SuppressWarnings( "SameParameterValue" )
   public IntegerProperty integerProperty( final Key key ) {
     assert key != null;
     return valuesProperty( key );
+  }

M src/main/java/com/keenwrite/preferences/WorkspaceKeys.java

   public static final Key KEY_DOC_COPYRIGHT = key( KEY_DOC, "copyright" );
   public static final Key KEY_EDITOR = key( KEY_ROOT, "editor" );
   public static final Key KEY_EDITOR_AUTOSAVE = key( KEY_EDITOR, "autosave" );
   public static final Key KEY_R = key( KEY_ROOT, "r" );
   public static final Key KEY_R_SCRIPT = key( KEY_R, "script" );
   public static final Key KEY_UI_SKIN_SELECTION = key( KEY_UI_SKIN, "selection" );
   public static final Key KEY_UI_SKIN_CUSTOM = key( KEY_UI_SKIN, "custom" );
   public static final Key KEY_UI_PREVIEW = key( KEY_UI, "preview" );
   public static final Key KEY_UI_PREVIEW_STYLESHEET = key( KEY_UI_PREVIEW, "stylesheet" );
   public static final Key KEY_LANGUAGE = key( KEY_ROOT, "language" );

A src/main/java/com/keenwrite/preview/DiagramUrlGenerator.java

 /* Copyright 2020-2021 White Magic Software, Ltd. -- All rights reserved. */
 package com.keenwrite.preview;
 import java.util.zip.Deflater;
 import static java.lang.String.format;
 import static java.util.Base64.getUrlEncoder;
 /**
  * Responsible for transforming text-based diagram descriptions into URLs
  * that the HTML renderer can embed as SVG images.
  */
 public class DiagramUrlGenerator {
   private DiagramUrlGenerator() {
+  }
   /**
    * Returns a URL that can be embedded as the {@code src} attribute to an HTML
    * {@code img} tag.
+   *
    * @param server  Name of server to use for diagram conversion.
    * @param diagram Diagram type (e.g., Graphviz, Block, PlantUML).
    * @param text    Diagram text that conforms to the diagram type.
    * @return A secure URL string to use as an image {@code src} attribute.
    */
   public static String toUrl(
     final String server, final String diagram, final String text ) {
     return format(
       "https://%s/%s/svg/%s", server, diagram, encode( text )
     );
+  }
   /**
    * Convert the plain-text version of the diagram into a URL-encoded value
    * suitable for passing to a web server using an HTTP GET request.
+   *
    * @param text The diagram text to encode.
    * @return The URL-encoded (and compressed) version of the text.
    */
   private static String encode( final String text ) {
     return getUrlEncoder().encodeToString( compress( text.getBytes() ) );
+  }
   /**
    * Compresses a sequence of bytes using ZLIB format.
+   *
    * @param source The data to compress.
    * @return A lossless, compressed sequence of bytes.
    */
   private static byte[] compress( byte[] source ) {
     final var deflater = new Deflater();
     deflater.setInput( source );
     deflater.finish();
     final var compressed = new byte[ Short.MAX_VALUE ];
     final var size = deflater.deflate( compressed );
     final var result = new byte[ size ];
     System.arraycopy( compressed, 0, result, 0, size );
     return result;
+  }
+}

M src/main/java/com/keenwrite/preview/HtmlPreview.java

    * <li>%s --- default stylesheet</li>
    * <li>%s --- language-specific stylesheet</li>
    * <li>%s --- font family</li>
    * <li>%d --- font size (must be pixels, not points due to bug)</li>
    * <li>%s --- base href</li>
    * </p>
    */
   private static final String HTML_HEAD =
     """
       <!doctype html>
       <html lang='%s'><head><title> </title><meta charset='utf-8'/>
       %s%s<style>body{font-family:'%s';font-size: %dpx;}</style>%s</head><body>
       """;
   private static final String HTML_TAIL = "</body></html>";
   private static final URL HTML_STYLE_PREVIEW = toUrl( STYLESHEET_PREVIEW );
   private final ChainedReplacedElementFactory mFactory;
   /**
    * Reusing this buffer prevents repetitious memory re-allocations.
    */
   private final StringBuilder mDocument = new StringBuilder( 65536 );
   private HtmlPanel mView;
   private JScrollPane mScrollPane;
   private String mBaseUriPath = "";
   private String mHead = "";
   private volatile boolean mLocked;
   private final JButton mScrollLockButton = new JButton();
   private final Workspace mWorkspace;
   /**
    * Creates a new preview pane that can scroll to the caret position within the
    * document.
+   *
    * @param workspace Contains locale and font size information.
    */
   public HtmlPreview( final Workspace workspace ) {
     mWorkspace = workspace;
     // The order is important: SwingReplacedElementFactory replaces SVG images
     // with a blank image, which will cause the chained factory to cache the
     // image and exit. Instead, the SVG must execute first to rasterize the
     // content. Consequently, the chained factory must maintain insertion order.
     mFactory = new ChainedReplacedElementFactory(
       new SvgReplacedElementFactory(),
       new SwingReplacedElementFactory()
     );
     // Attempts to prevent a flash of black un-styled content upon load.
     setStyle( "-fx-background-color: white;" );
     invokeLater( () -> {
       mHead = generateHead();
       mView = new HtmlPanel();
       mScrollPane = new JScrollPane( mView );
       final var verticalBar = mScrollPane.getVerticalScrollBar();
       final var verticalPanel = new JPanel( new BorderLayout() );
       final var map = verticalBar.getInputMap( WHEN_IN_FOCUSED_WINDOW );
       addKeyboardEvents( map );
       mScrollLockButton.setFont( getIconFont( 14 ) );
       mScrollLockButton.setText( getLockText( mLocked ) );
       mScrollLockButton.setMargin( new Insets( 1, 0, 0, 0 ) );
       mScrollLockButton.addActionListener( e -> fireScrollLockEvent( !mLocked ) );
       verticalPanel.add( verticalBar, CENTER );
       verticalPanel.add( mScrollLockButton, PAGE_END );
       final var wrapper = new JPanel( new BorderLayout() );
       wrapper.add( mScrollPane, CENTER );
       wrapper.add( verticalPanel, LINE_END );
       // Enabling the cache attempts to prevent black flashes when resizing.
       setCache( true );
       setCacheHint( SPEED );
       setContent( wrapper );
       wrapper.addComponentListener( this );
       final var context = mView.getSharedContext();
       final var textRenderer = context.getTextRenderer();
       context.setReplacedElementFactory( mFactory );
       textRenderer.setSmoothingThreshold( 0 );
       localeProperty().addListener( ( c, o, n ) -> rerender() );
       fontFamilyProperty().addListener( ( c, o, n ) -> rerender() );
       fontSizeProperty().addListener( ( c, o, n ) -> rerender() );
     } );
     register( this );
+  }
   @Subscribe
   public void handle( final ScrollLockEvent event ) {
     mLocked = event.isLocked();
     invokeLater( () -> mScrollLockButton.setText( getLockText( mLocked ) ) );
+  }
   /**
    * Updates the internal HTML source shown in the preview pane.
+   *
    * @param html The new HTML document to display.
    */
   public void render( final String html ) {
     mView.render( decorate( html ), getBaseUri() );
+  }
   /**
    * Clears the caches then re-renders the content.
    */
   public void refresh() {
     mFactory.clearCache();
     rerender();
+  }
   /**
    * Recomputes the HTML head then renders the document.
    */
   private void rerender() {
     mHead = generateHead();
     render( mDocument.toString() );
+  }
   /**
    * Attaches the HTML head prefix and HTML tail suffix to the given HTML
    * string.
+   *
    * @param html The HTML to adorn with opening and closing tags.
    * @return A complete HTML document, ready for rendering.
    */
   private String decorate( final String html ) {
     mDocument.setLength( 0 );
     mDocument.append( html );
     // Head and tail must be separate from document due to re-rendering.
     return mHead + mDocument + HTML_TAIL;
+  }
   /**
    * Called when settings are changed that affect the HTML document preamble.
    * This is a minor performance optimization to avoid generating the head
    * each time that the document itself changes.
+   *
    * @return A new doctype and HTML {@code head} element.
    */
   private String generateHead() {
     final var locale = getLocale();
     final var url = toUrl( locale );
     final var base = getBaseUri();
     // Point sizes are converted to pixels because of a rendering bug.
     return format(
       HTML_HEAD,
       locale.getLanguage(),
       format( HTML_STYLESHEET, HTML_STYLE_PREVIEW ),
       url == null ? "" : format( HTML_STYLESHEET, url ),
       getFontFamily(),
       toPixels( getFontSize() ),
       base.isBlank() ? "" : format( HTML_BASE, base )
     );
+  }
   /**
    * Clears the preview pane by rendering an empty string.
    */
   public void clear() {
     render( "" );
+  }
   /**
    * Sets the base URI to the containing directory the file being edited.
+   *
    * @param path The path to the file being edited.
    */
   public void setBaseUri( final Path path ) {
     final var parent = path.getParent();
     mBaseUriPath = parent == null ? "" : parent.toUri().toString();
+  }
   /**
    * Scrolls to the closest element matching the given identifier without
    * waiting for the document to be ready.
+   *
    * @param id Scroll the preview pane to this unique paragraph identifier.
    */
   public void scrollTo( final String id ) {
     if( mLocked ) {
       return;
+    }
     invokeLater( () -> {
       int iter = 0;
       Box box = null;
       while( iter++ < 3 && ((box = mView.getBoxById( id )) == null) ) {
         try {
           sleep( 10 );
         } catch( final Exception ex ) {
           clue( ex );
+        }
+      }
       scrollTo( box );
     } );
+  }
   /**
    * Scrolls to the location specified by the {@link Box} that corresponds
    * to a point somewhere in the preview pane. If there is no caret, then
    * this will not change the scroll position. Changing the scroll position
    * to the top if the {@link Box} instance is {@code null} will result in
    * jumping around a lot and inconsistent synchronization issues.
+   *
    * @param box The rectangular region containing the caret, or {@code null}
    *            if the HTML does not have a caret.
    */
   private void scrollTo( final Box box ) {
     if( box != null ) {
       invokeLater( () -> {
         mView.scrollTo( createPoint( box ) );
         getScrollPane().repaint();
       } );
+    }
+  }
   /**
    * Creates a {@link Point} to use as a reference for scrolling to the area
    * described by the given {@link Box}. The {@link Box} coordinates are used
    * to populate the {@link Point}'s location, with minor adjustments for
    * vertical centering.
+   *
    * @param box The {@link Box} that represents a scrolling anchor reference.
    * @return A coordinate suitable for scrolling to.
    */
   private Point createPoint( final Box box ) {
     assert box != null;
     // Scroll back up by half the height of the scroll bar to keep the typing
     // area within the view port. Otherwise the view port will have jumped too
     // high up and the most recently typed letters won't be visible.
     int y = max( box.getAbsY() - getVerticalScrollBarHeight() / 2, 0 );
     int x = box.getAbsX();
     if( !box.getStyle().isInline() ) {
       final var margin = box.getMargin( mView.getLayoutContext() );
       y += margin.top();
       x += margin.left();
+    }
     return new Point( x, y );
+  }
   private String getBaseUri() {
     return mBaseUriPath;
+  }
   private JScrollPane getScrollPane() {
     return mScrollPane;
+  }
   public JScrollBar getVerticalScrollBar() {
     return getScrollPane().getVerticalScrollBar();
+  }
   private int getVerticalScrollBarHeight() {
     return getVerticalScrollBar().getHeight();
+  }
   /**
    * Returns the ISO 639 alpha-2 or alpha-3 language code followed by a hyphen
    * followed by the ISO 15924 alpha-4 script code, followed by an ISO 3166
    * alpha-2 country code or UN M.49 numeric-3 area code. For example, this
    * could return "en-Latn-CA" for Canadian English written in the Latin
    * character set.
+   *
    * @return Unique identifier for language and country.
    */
   private static URL toUrl( final Locale locale ) {
     return toUrl(
       get(
         sSettings.getSetting( STYLESHEET_PREVIEW_LOCALE, "" ),
         locale.getLanguage(),
         locale.getScript(),
         locale.getCountry()
+      )
     );
+  }
   private static URL toUrl( final String path ) {
     return HtmlPreview.class.getResource( path );
+  }
   private Locale getLocale() {
     return localeProperty().toLocale();
+  }
   private LocaleProperty localeProperty() {
     return mWorkspace.localeProperty( KEY_LANGUAGE_LOCALE );
+  }
   private String getFontFamily() {
     return fontFamilyProperty().get();
+  }
   private StringProperty fontFamilyProperty() {
     return mWorkspace.stringProperty( KEY_UI_FONT_PREVIEW_NAME );
+  }
   private double getFontSize() {
     return fontSizeProperty().get();
+  }
   /**
    * Returns the font size in points.
+   *
    * @return The user-defined font size (in pt).
    */
   private DoubleProperty fontSizeProperty() {
     return mWorkspace.doubleProperty( KEY_UI_FONT_PREVIEW_SIZE );
+  }
   private String getLockText( final boolean locked ) {
     return Character.toString( (locked ? LOCK : UNLOCK_ALT).getChar() );
+  }
   /**
    * Maps keyboard events to scrollbar commands so that users may control
    * the {@link HtmlPreview} panel using the keyboard.
+   *
    * @param map The map to update with keyboard events.
    */
   private void addKeyboardEvents( final InputMap map ) {
     map.put( getKeyStroke( VK_DOWN, 0 ), "positiveUnitIncrement" );
     map.put( getKeyStroke( VK_UP, 0 ), "negativeUnitIncrement" );
     map.put( getKeyStroke( VK_PAGE_DOWN, 0 ), "positiveBlockIncrement" );
     map.put( getKeyStroke( VK_PAGE_UP, 0 ), "negativeBlockIncrement" );
     map.put( getKeyStroke( VK_HOME, 0 ), "minScroll" );
     map.put( getKeyStroke( VK_END, 0 ), "maxScroll" );
+  }
   @Override
   public void componentResized( final ComponentEvent e ) {
     if( mWorkspace.toBoolean( KEY_IMAGES_RESIZE ) ) {
       mFactory.clearCache();
+    }
     // Force update on the Swing EDT, otherwise the scrollbar and content
     // will not be updated correctly on some platforms.
     invokeLater( () -> getContent().repaint() );
+  }
   @Override
   public void componentMoved( final ComponentEvent e ) { }
   @Override
   public void componentShown( final ComponentEvent e ) { }
   @Override
   public void componentHidden( final ComponentEvent e ) { }
    * <li>%s --- user-customized stylesheet</li>
    * <li>%s --- font family</li>
    * <li>%d --- font size (must be pixels, not points due to bug)</li>
    * <li>%s --- base href</li>
    * </p>
    */
   private static final String HTML_HEAD =
     """
       <!doctype html>
       <html lang='%s'><head><title> </title><meta charset='utf-8'/>
       %s%s%s<style>body{font-family:'%s';font-size: %dpx;}</style>%s</head><body>
       """;
   private static final String HTML_TAIL = "</body></html>";
   private static final URL HTML_STYLE_PREVIEW = toUrl( STYLESHEET_PREVIEW );
   private final ChainedReplacedElementFactory mFactory;
   /**
    * Reusing this buffer prevents repetitious memory re-allocations.
    */
   private final StringBuilder mDocument = new StringBuilder( 65536 );
   private HtmlPanel mView;
   private JScrollPane mScrollPane;
   private String mBaseUriPath = "";
   private String mHead = "";
   private volatile boolean mLocked;
   private final JButton mScrollLockButton = new JButton();
   private final Workspace mWorkspace;
   /**
    * Creates a new preview pane that can scroll to the caret position within the
    * document.
+   *
    * @param workspace Contains locale and font size information.
    */
   public HtmlPreview( final Workspace workspace ) {
     mWorkspace = workspace;
     // The order is important: SwingReplacedElementFactory replaces SVG images
     // with a blank image, which will cause the chained factory to cache the
     // image and exit. Instead, the SVG must execute first to rasterize the
     // content. Consequently, the chained factory must maintain insertion order.
     mFactory = new ChainedReplacedElementFactory(
       new SvgReplacedElementFactory(),
       new SwingReplacedElementFactory()
     );
     // Attempts to prevent a flash of black un-styled content upon load.
     setStyle( "-fx-background-color: white;" );
     invokeLater( () -> {
       mHead = generateHead();
       mView = new HtmlPanel();
       mScrollPane = new JScrollPane( mView );
       final var verticalBar = mScrollPane.getVerticalScrollBar();
       final var verticalPanel = new JPanel( new BorderLayout() );
       final var map = verticalBar.getInputMap( WHEN_IN_FOCUSED_WINDOW );
       addKeyboardEvents( map );
       mScrollLockButton.setFont( getIconFont( 14 ) );
       mScrollLockButton.setText( getLockText( mLocked ) );
       mScrollLockButton.setMargin( new Insets( 1, 0, 0, 0 ) );
       mScrollLockButton.addActionListener( e -> fireScrollLockEvent( !mLocked ) );
       verticalPanel.add( verticalBar, CENTER );
       verticalPanel.add( mScrollLockButton, PAGE_END );
       final var wrapper = new JPanel( new BorderLayout() );
       wrapper.add( mScrollPane, CENTER );
       wrapper.add( verticalPanel, LINE_END );
       // Enabling the cache attempts to prevent black flashes when resizing.
       setCache( true );
       setCacheHint( SPEED );
       setContent( wrapper );
       wrapper.addComponentListener( this );
       final var context = mView.getSharedContext();
       final var textRenderer = context.getTextRenderer();
       context.setReplacedElementFactory( mFactory );
       textRenderer.setSmoothingThreshold( 0 );
       localeProperty().addListener( ( c, o, n ) -> rerender() );
       fontFamilyProperty().addListener( ( c, o, n ) -> rerender() );
       fontSizeProperty().addListener( ( c, o, n ) -> rerender() );
     } );
     register( this );
+  }
   @Subscribe
   public void handle( final ScrollLockEvent event ) {
     mLocked = event.isLocked();
     invokeLater( () -> mScrollLockButton.setText( getLockText( mLocked ) ) );
+  }
   /**
    * Updates the internal HTML source shown in the preview pane.
+   *
    * @param html The new HTML document to display.
    */
   public void render( final String html ) {
     mView.render( decorate( html ), getBaseUri() );
+  }
   /**
    * Clears the caches then re-renders the content.
    */
   public void refresh() {
     mFactory.clearCache();
     rerender();
+  }
   /**
    * Recomputes the HTML head then renders the document.
    */
   private void rerender() {
     mHead = generateHead();
     render( mDocument.toString() );
+  }
   /**
    * Attaches the HTML head prefix and HTML tail suffix to the given HTML
    * string.
+   *
    * @param html The HTML to adorn with opening and closing tags.
    * @return A complete HTML document, ready for rendering.
    */
   private String decorate( final String html ) {
     mDocument.setLength( 0 );
     mDocument.append( html );
     // Head and tail must be separate from document due to re-rendering.
     return mHead + mDocument + HTML_TAIL;
+  }
   /**
    * Called when settings are changed that affect the HTML document preamble.
    * This is a minor performance optimization to avoid generating the head
    * each time that the document itself changes.
+   *
    * @return A new doctype and HTML {@code head} element.
    */
   private String generateHead() {
     final var locale = getLocale();
     final var base = getBaseUri();
     final var custom = getCustomStylesheetUrl();
     // Point sizes are converted to pixels because of a rendering bug.
     return format(
       HTML_HEAD,
       locale.getLanguage(),
       toStylesheetString( HTML_STYLE_PREVIEW ),
       toStylesheetString( toUrl( locale ) ),
       toStylesheetString( custom ),
       getFontFamily(),
       toPixels( getFontSize() ),
       base.isBlank() ? "" : format( HTML_BASE, base )
     );
+  }
   /**
    * Clears the preview pane by rendering an empty string.
    */
   public void clear() {
     render( "" );
+  }
   /**
    * Sets the base URI to the containing directory the file being edited.
+   *
    * @param path The path to the file being edited.
    */
   public void setBaseUri( final Path path ) {
     final var parent = path.getParent();
     mBaseUriPath = parent == null ? "" : parent.toUri().toString();
+  }
   /**
    * Scrolls to the closest element matching the given identifier without
    * waiting for the document to be ready.
+   *
    * @param id Scroll the preview pane to this unique paragraph identifier.
    */
   public void scrollTo( final String id ) {
     if( mLocked ) {
       return;
+    }
     invokeLater( () -> {
       int iter = 0;
       Box box = null;
       while( iter++ < 3 && ((box = mView.getBoxById( id )) == null) ) {
         try {
           sleep( 10 );
         } catch( final Exception ex ) {
           clue( ex );
+        }
+      }
       scrollTo( box );
     } );
+  }
   /**
    * Scrolls to the location specified by the {@link Box} that corresponds
    * to a point somewhere in the preview pane. If there is no caret, then
    * this will not change the scroll position. Changing the scroll position
    * to the top if the {@link Box} instance is {@code null} will result in
    * jumping around a lot and inconsistent synchronization issues.
+   *
    * @param box The rectangular region containing the caret, or {@code null}
    *            if the HTML does not have a caret.
    */
   private void scrollTo( final Box box ) {
     if( box != null ) {
       invokeLater( () -> {
         mView.scrollTo( createPoint( box ) );
         getScrollPane().repaint();
       } );
+    }
+  }
   /**
    * Creates a {@link Point} to use as a reference for scrolling to the area
    * described by the given {@link Box}. The {@link Box} coordinates are used
    * to populate the {@link Point}'s location, with minor adjustments for
    * vertical centering.
+   *
    * @param box The {@link Box} that represents a scrolling anchor reference.
    * @return A coordinate suitable for scrolling to.
    */
   private Point createPoint( final Box box ) {
     assert box != null;
     // Scroll back up by half the height of the scroll bar to keep the typing
     // area within the view port. Otherwise the view port will have jumped too
     // high up and the most recently typed letters won't be visible.
     int y = max( box.getAbsY() - getVerticalScrollBarHeight() / 2, 0 );
     int x = box.getAbsX();
     if( !box.getStyle().isInline() ) {
       final var margin = box.getMargin( mView.getLayoutContext() );
       y += margin.top();
       x += margin.left();
+    }
     return new Point( x, y );
+  }
   private String getBaseUri() {
     return mBaseUriPath;
+  }
   private JScrollPane getScrollPane() {
     return mScrollPane;
+  }
   public JScrollBar getVerticalScrollBar() {
     return getScrollPane().getVerticalScrollBar();
+  }
   private int getVerticalScrollBarHeight() {
     return getVerticalScrollBar().getHeight();
+  }
   /**
    * Returns the ISO 639 alpha-2 or alpha-3 language code followed by a hyphen
    * followed by the ISO 15924 alpha-4 script code, followed by an ISO 3166
    * alpha-2 country code or UN M.49 numeric-3 area code. For example, this
    * could return "en-Latn-CA" for Canadian English written in the Latin
    * character set.
+   *
    * @return Unique identifier for language and country.
    */
   private static URL toUrl( final Locale locale ) {
     return toUrl(
       get(
         sSettings.getSetting( STYLESHEET_PREVIEW_LOCALE, "" ),
         locale.getLanguage(),
         locale.getScript(),
         locale.getCountry()
+      )
     );
+  }
   private static URL toUrl( final String path ) {
     return HtmlPreview.class.getResource( path );
+  }
   private Locale getLocale() {
     return localeProperty().toLocale();
+  }
   private LocaleProperty localeProperty() {
     return mWorkspace.localeProperty( KEY_LANGUAGE_LOCALE );
+  }
   private String getFontFamily() {
     return fontFamilyProperty().get();
+  }
   private StringProperty fontFamilyProperty() {
     return mWorkspace.stringProperty( KEY_UI_FONT_PREVIEW_NAME );
+  }
   private double getFontSize() {
     return fontSizeProperty().get();
+  }
   /**
    * Returns the font size in points.
+   *
    * @return The user-defined font size (in pt).
    */
   private DoubleProperty fontSizeProperty() {
     return mWorkspace.doubleProperty( KEY_UI_FONT_PREVIEW_SIZE );
+  }
   private String getLockText( final boolean locked ) {
     return Character.toString( (locked ? LOCK : UNLOCK_ALT).getChar() );
+  }
   private URL getCustomStylesheetUrl() {
     try {
       return mWorkspace.toFile( KEY_UI_PREVIEW_STYLESHEET ).toURI().toURL();
     } catch( final Exception ex ) {
       clue( ex );
       return null;
+    }
+  }
   /**
    * Maps keyboard events to scrollbar commands so that users may control
    * the {@link HtmlPreview} panel using the keyboard.
+   *
    * @param map The map to update with keyboard events.
    */
   private void addKeyboardEvents( final InputMap map ) {
     map.put( getKeyStroke( VK_DOWN, 0 ), "positiveUnitIncrement" );
     map.put( getKeyStroke( VK_UP, 0 ), "negativeUnitIncrement" );
     map.put( getKeyStroke( VK_PAGE_DOWN, 0 ), "positiveBlockIncrement" );
     map.put( getKeyStroke( VK_PAGE_UP, 0 ), "negativeBlockIncrement" );
     map.put( getKeyStroke( VK_HOME, 0 ), "minScroll" );
     map.put( getKeyStroke( VK_END, 0 ), "maxScroll" );
+  }
   @Override
   public void componentResized( final ComponentEvent e ) {
     if( mWorkspace.toBoolean( KEY_IMAGES_RESIZE ) ) {
       mFactory.clearCache();
+    }
     // Force update on the Swing EDT, otherwise the scrollbar and content
     // will not be updated correctly on some platforms.
     invokeLater( () -> getContent().repaint() );
+  }
   @Override
   public void componentMoved( final ComponentEvent e ) { }
   @Override
   public void componentShown( final ComponentEvent e ) { }
   @Override
   public void componentHidden( final ComponentEvent e ) { }
   private static String toStylesheetString( final URL url ) {
     return url == null ? "" : format( HTML_STYLESHEET, url );
+  }
+}

M src/main/java/com/keenwrite/processors/XhtmlProcessor.java

 import com.keenwrite.preferences.Workspace;
 import com.keenwrite.ui.heuristics.WordCounter;
 import com.whitemagicsoftware.keenquotes.Contractions;
 import com.whitemagicsoftware.keenquotes.Converter;
 import javafx.beans.property.StringProperty;
 import org.w3c.dom.Document;
 import java.io.FileNotFoundException;
 import java.nio.file.Path;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
     compile( "\\p{Blank}", UNICODE_CHARACTER_CLASS );
   private final static Converter sTypographer =
     new Converter( lex -> clue( lex.toString() ), CHARS, PARSER_XML );
   private final static Converter sTypographer = new Converter(
     lex -> clue( lex.toString() ), contractions(), CHARS, PARSER_XML );
   private final ProcessorContext mContext;
+  }
   private Locale locale() { return getWorkspace().getLocale(); }
   private Locale locale() {return getWorkspace().getLocale();}
   private String title() {
   private StringProperty stringProperty( final Key key ) {
     return getWorkspace().stringProperty( key );
+  }
   /**
    * Creates contracts with a custom set of unambiguous strings.
+   *
    * @return List of contractions to use for curling straight quotes.
    */
   private static Contractions contractions() {
     final var builder = new Contractions.Builder();
     return builder.withBeganUnambiguous( List.of( "bout" ) ).build();
+  }
+}

M src/main/java/com/keenwrite/processors/markdown/extensions/fences/FencedBlockExtension.java

 import com.keenwrite.preferences.Workspace;
 import com.keenwrite.preview.DiagramUrlGenerator;
 import com.keenwrite.processors.DefinitionProcessor;
 import com.keenwrite.processors.Processor;
 import org.jetbrains.annotations.NotNull;
 import java.io.ByteArrayOutputStream;
 import java.util.HashSet;
 import java.util.Set;
 import java.util.zip.Deflater;
 import static com.keenwrite.events.StatusEvent.clue;
 import static com.keenwrite.preferences.WorkspaceKeys.KEY_IMAGES_SERVER;
 import static com.vladsch.flexmark.html.HtmlRenderer.Builder;
 import static com.vladsch.flexmark.html.renderer.LinkType.LINK;
 import static java.lang.String.format;
 import static java.util.Base64.getUrlEncoder;
 import static java.util.zip.Deflater.BEST_COMPRESSION;
 import static java.util.zip.Deflater.FULL_FLUSH;
 /**
   private final Processor<String> mProcessor;
   private final ProcessorContext mContext;
   private final Workspace mWorkspace;
   public FencedBlockExtension(
     final Processor<String> processor, final ProcessorContext context ) {
     final Processor<String> processor, final Workspace workspace ) {
     assert processor != null;
     assert context != null;
     assert workspace != null;
     mProcessor = processor;
     mContext = context;
     mWorkspace = workspace;
+  }
   public static FencedBlockExtension create(
     final Processor<String> processor, final ProcessorContext context ) {
     return new FencedBlockExtension( processor, context );
     assert processor != null;
     assert context != null;
     return new FencedBlockExtension( processor, context.getWorkspace() );
+  }
           final var content = node.getContentChars().normalizeEOL();
           final var text = mProcessor.apply( content );
           final var encoded = encode( text );
           final var source = getSourceUrl( type, encoded );
           final var server = mWorkspace.toString( KEY_IMAGES_SERVER );
           final var source = DiagramUrlGenerator.toUrl( server, type, text );
           final var link = context.resolveLink( LINK, source, false );
       return set;
+    }
     private byte[] compress( byte[] source ) {
       final var inLen = source.length;
       final var result = new byte[ inLen ];
       final var compressor = new Deflater( BEST_COMPRESSION );
       compressor.setInput( source, 0, inLen );
       compressor.finish();
       final var outLen = compressor.deflate( result, 0, inLen, FULL_FLUSH );
       compressor.end();
       try( final var out = new ByteArrayOutputStream() ) {
         out.write( result, 0, outLen );
         return out.toByteArray();
       } catch( final Exception ex ) {
         clue( ex );
         throw new RuntimeException( ex );
+      }
+    }
     private String encode( final String decoded ) {
       return getUrlEncoder().encodeToString( compress( decoded.getBytes() ) );
+    }
     private String getSourceUrl( final String type, final String encoded ) {
       return
         format( "https://%s/%s/svg/%s", getDiagramServerName(), type, encoded );
+    }
     private Workspace getWorkspace() {
       return mContext.getWorkspace();
+    }
     private String getDiagramServerName() {
       return getWorkspace().toString( KEY_IMAGES_SERVER );
+    }
+  }

M src/main/java/com/keenwrite/typesetting/Typesetter.java

     /**
      * Setting {@code TEXMFCACHE} when run on a fresh system fails on first
      * run. If the cache directory doesn't exist, attempt to create it, then
      * Setting {@code TEXMFCACHE} when run on a fresh system fails on the first
      * try. If the cache directory doesn't exist, attempt to create it, then
      * call ConTeXt to generate the PDF. This is brittle because if the
      * directory is empty, or not populated with cached data, a false positive
       final var process = builder.start();
       final var stream = process.getInputStream();
       // Reading from stdout allows slurping page numbers while generating.
       final var listener = new PaginationListener(
         process.getInputStream(), stdout );
       final var listener = new PaginationListener( stream, stdout );
       listener.start();
       // Even though the process has completed, there may be incomplete I/O.
       process.waitFor();
       // Allow time for any incomplete I/O to take place.
       process.waitFor( 1, SECONDS );
       final var exit = process.exitValue();
       process.destroy();
     @Override
     public void run() {
       try( final var reader = createReader() ) {
       try( final var reader = createReader( mInputStream ) ) {
         int pageCount = 1;
         int passCount = 1;
             pageCount = page;
             // Let the user know that something is happening in the background.
             // Inform the user of pages being typeset.
             clue( "Main.status.typeset.page",
                   pageCount, pageTotal < 1 ? "?" : pageTotal, passCount
             );
+          }
+        }
       } catch( final IOException ex ) {
         clue( ex );
         throw new RuntimeException( ex );
+      }
+    }
     private BufferedReader createReader() {
       return new BufferedReader( new InputStreamReader( mInputStream ) );
     private BufferedReader createReader( final InputStream inputStream ) {
       return new BufferedReader( new InputStreamReader( inputStream ) );
+    }
+  }

M src/main/resources/com/keenwrite/messages.properties

 workspace.document.date.title=Timestamp
 workspace.editor=Editor
 workspace.editor.autosave=Autosave
 workspace.editor.autosave.desc=Amount of time to wait between saves, in seconds (0 means disabled).
 workspace.editor.autosave.title=Timeout
 workspace.typeset=Typesetting
 workspace.typeset.context=ConTeXt
 workspace.ui.skin.custom.desc=User-defined JavaFX cascading stylesheet file.
 workspace.ui.skin.custom.title=Path
 workspace.ui.preview=Preview
 workspace.ui.preview.stylesheet=Stylesheet
 workspace.ui.preview.stylesheet.desc=User-defined HTML cascading stylesheet file.
 workspace.ui.preview.stylesheet.title=Path
 workspace.ui.font=Fonts

D src/main/resources/com/keenwrite/quotes/en/README.md

 Listing English contractions helps converting straight apostrophes into curly apostrophes. The files include:
 * began.txt -- Contractions that begin with an apostrophe.
 * ended.txt -- Contractions that end with an apostrophe.
 * inner.txt -- Contractions that have internal apostrophes.
 * outer.txt -- Contractions that start and end with an apostrophe.
 * verbs.txt -- Contractions that form suffixes for a variety of words.
 The contractions for verbs must be detected dynamically, all other contractions can be hard-coded into either regular expressions or EBNF grammars.

D src/main/resources/com/keenwrite/quotes/en/began.txt

 'aporth
 'bout
 'boutcha
 'boutchu
 'choo
 'dillo
 'e'll
 'ere
 'e
 'e's
 'fraid
 'fro
 'ho
 'kay
 'lo
 'n
 'neath
 'nother
 'onna
 'pon
 'sblood
 'scuse
 'sfar
 'sfoot
 'sup
 't
 'taint
 'tain't
 'tis
 'tisn't
 'tshall
 'twas
 'twasn't
 'tween
 'twere
 'tweren't
 'twill
 'twixt
 'twon't
 'twou'd
 'twou'dn't
 'twould
 'twouldn't
 'um
 've
 'zat

D src/main/resources/com/keenwrite/quotes/en/ended.txt

 ain'
 an'
 burlin'
 cas'
 didn'
 doan'
 doin'
 fo'
 gerrin'
 gon'
 i'
 Ima'
 mo'
 namsayin'
 o'
 ol'
 o'th'
 po'
 t'
 th'

D src/main/resources/com/keenwrite/quotes/en/inner.txt

 aboves'd
 after't
 a'ight
 ain't
 ain'tcha
 all's
 and's
 a'n't
 an't
 anybody'll
 anybody's
 aren'chu
 aren't
 a'right
 as't
 at's
 bain't
 bean't
 before't
 ben't
 better'n
 bettern't
 bisn't
 b'long
 bo's'n
 br'er
 but's
 by'r
 by't
 cain't
 call't
 cam'st
 cann't
 ca'n't
 can't
 can'tcha
 can't've
 can've
 cap'n
 casn't
 ch'ill
 c'mere
 c'min
 c'mon
 col's
 couldn't
 couldn't've
 couldn've
 could've
 cudn't
 damfidon't
 damnfidon't
 daredn't
 daren't
 dasn't
 dassn't
 dat's
 dere's
 der's
 didn't
 didn'tcha
 didn'tchya
 di'n't
 din't
 doesn't
 does't
 don't
 don'tcha
 do't
 dothn't
 dudn't
 dun't
 dursen't
 dursn't
 durstn't
 d'ya
 d'y'all
 d'ye
 d'yer
 d'you
 e'en
 e'er
 everybody's
 everyone's
 ev'ry
 far's
 fo'c's'le
 fo'c'sle
 fo'c'stle
 for't
 f'rever
 f'rexample
 g'bye
 g'day
 g'head
 gi's
 giv'n
 g'night
 g'wan
 hadn't
 hadn't've
 had've
 hain't
 ha'n't
 han't
 ha'pence
 ha'pennies
 ha'penny
 ha'p'orth
 ha'porth
 ha'p'orths
 hasn't
 has't
 haven't
 have't
 havn't
 heav'n
 he'd
 he'd've
 he'l
 he'll
 he'll've
 here'll
 here're
 here's
 her's
 he's
 he'sn't
 he've
 how'd
 how'll
 how'm
 how're
 how's
 how't
 how've
 I'd
 I'd-a
 I'da
 idn't
 I'dn't've
 I'd've
 i'faith
 if'n
 if't
 I'l
 I'll
 I'll've
 I'm
 I'm'a
 I'm-a
 I'ma
 i'm'a
 i'ma
 I'mma
 i'n
 in's
 i'n't
 in't
 into't
 I's
 i's
 I'se
 isn't
 is't
 it'd
 it'd've
 it'll
 it's
 it'sn't
 I've
 I'ven't
 let's
 li'l
 littl'un
 ma'am
 mayn't
 may't
 may've
 m'dear
 mightn't
 mightn't've
 might've
 m'lad
 m'ladies
 m'lady
 m'lord
 m'lords
 mng't
 more'n
 mus'n't
 musn't
 mustn't
 mustn't've
 must've
 needn't
 nee'n't
 ne'er
 ne'er-do-well
 never've
 nobody'd
 nobody's
 nobody've
 nor'easter
 not've
 n't
 o'clock
 o'er
 o'erhead
 o'erload
 o'erloads
 o'erlook
 o'erlooks
 Oi'll
 Oi've
 o'lantern
 o'lanterns
 one's
 on't
 other'n
 oughtn't
 oughtn't've
 p'aps
 penn'orth
 pen'orth
 people'd
 po'boy
 pow'r
 p'r'aps
 p'raps
 pray'r
 p'rhaps
 pudd'n'head
 r'coon
 run-o'-the-mill
 same's
 see't
 se'nnight
 sev'n
 shalln't
 shall's
 shall've
 sha'n't
 shan't
 sh'd
 she'd
 she'd've
 she'l
 she'll
 she'll've
 she's
 she've
 shouldn't
 shouldn't've
 should've
 s'long
 s'matter
 s'more
 s'mores
 somebody'd
 somebody's
 someone's
 something's
 sort've
 so's
 th'are
 th'art
 that'd
 that'd've
 that'll
 that'll've
 that're
 that's
 that've
 them's
 there'd
 there'll
 there're
 there's
 there've
 these're
 these've
 they'd
 they'da
 they'd've
 they'l
 they'll
 they'll've
 they're
 they's
 they've
 th'immortall
 this'd
 this'll
 this's
 this've
 those're
 those've
 tho't
 thou'dst
 thou'lt
 thou'rt
 thou'st
 tops'l
 to't
 to've
 twasn't
 twopenn'orths
 t'ye
 unto't
 upon't
 usedn't
 usen't
 us's
 view't
 wadn't
 wait'll
 wa'n't
 wan't
 warn't
 wasn't
 was't
 wazn't
 we'd
 we'd've
 we'l
 we'll
 we'll've
 we're
 weren't
 we's
 we've
 we'ven't
 what'd
 whate'er
 whatever's
 what'll
 what'm
 what're
 what's
 what've
 when'd
 whene'er
 when'll
 when's
 where'd
 where'er
 where'm
 where're
 where's
 where've
 which'd
 which'll
 which're
 which's
 which've
 who'd
 who'da
 who'd've
 whoe'er
 who'll
 who'm
 whom're
 who're
 who's
 who've
 why'd
 why'm
 whyn't
 why're
 why's
 willn't
 will've
 with't
 wolln't
 wo'n't
 won't
 won't've
 woo't
 worn't
 wou'd
 wouldn't
 wouldn'ta
 wouldn't've
 would've
 wudn't
 y'ad
 y'ain't
 y'all
 ya'll
 y'all'd
 y'all'd've
 y'all'll
 y'all're
 y'allself
 y'allselves
 y'all've
 y'are
 y'ave
 ye'd
 ye'll
 y'ere
 ye're
 yestere'en
 yet's
 ye've
 y'ever
 y'knew
 y'know
 you'd
 you'dn't've
 you'd've
 you'l
 you'll
 you'll've
 you're
 you'ren't
 yours'd
 yours'll
 yours've
 you's
 you'se
 you've
 you'ven't
 yo've
 y'see

D src/main/resources/com/keenwrite/quotes/en/outer.txt

1		'n'
2
3	1

D src/main/resources/com/keenwrite/quotes/en/verbs.txt

 'd
 'll
 'm
 're
 's
 've

M src/main/resources/lexicons/en.txt

Binary file

M src/test/java/com/keenwrite/definition/TreeViewTest.java

 import static com.keenwrite.util.FontLoader.initFonts;
 //@ExtendWith(ApplicationExtension.class)
 public class TreeViewTest extends Application {
   private final SimpleObjectProperty<Node> mTextEditor =

A src/test/java/com/keenwrite/preview/DiagramUrlGeneratorTest.java

 package com.keenwrite.preview;
 import org.junit.jupiter.api.Test;
 import static com.keenwrite.preview.DiagramUrlGenerator.toUrl;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 /**
  * Responsible for testing that images sent to the diagram server will render.
  */
 class DiagramUrlGeneratorTest {
   private final static String SERVER_NAME = "kroki.io";
   // @formatter:off
   private final static String[] DIAGRAMS = new String[]{
     "graphviz",
     "digraph G {Hello->World; World->Hello;}",
     "https://kroki.io/graphviz/svg/eJxLyUwvSizIUHBXqPZIzcnJ17ULzy_KSbFWAFO6dmBB61oAE9kNww==",
     "blockdiag",
     """
       blockdiag {
         Kroki -> generates -> "Block diagrams";
         Kroki -> is -> "very easy!";
         Kroki [color = "greenyellow"];
         "Block diagrams" [color = "pink"];
         "very easy!" [color = "orange"];
+      }
       """,
     "https://kroki.io/blockdiag/svg/eJxdzDEKQjEQhOHeU4zpPYFoYesRxGJ9bwghMSsbUYJ4d10UCZbDfPynolOek0Q8FsDeNCestoisNLmy-Qg7R3Blcm5hPcr0ITdaB6X15fv-_YdJixo2CNHI2lmK3sPRA__RwV5SzV80ZAegJjXSyfMFptc71w=="
   };
   // @formatter:on
   /**
    * Test that URL encoding works with Kroki's server.
    */
   @Test
   public void test_Generation_TextDiagram_UrlEncoded() {
     // Use a map of pairs if this test needs more complexity.
     for( int i = 0; i < DIAGRAMS.length / 3; i += 3 ) {
       final var name = DIAGRAMS[ i ];
       final var text = DIAGRAMS[ i + 1 ];
       final var expected = DIAGRAMS[ i + 2 ];
       final var actual = toUrl( SERVER_NAME, name, text );
       assertEquals( expected, actual );
+    }
+  }
+}