Eliminate redundant diacritics, fix broken images

src/main/java/com/keenwrite/preview/SvgReplacedElementFactory.java

		else if( MediaType.fromFilename( source ).isSvg() ) {
		// Attempt to rasterize based on file name.
		- final var path = new File( source ).toPath();
		+ final var srcUri = new URI( source ).getPath();
		+ final var path = Path.of( new File( srcUri ).getCanonicalPath() );

		if( path.isAbsolute() ) {

src/main/java/com/keenwrite/ui/dialogs/ExportDialog.java


		import com.keenwrite.events.ExportFailedEvent;
		+import com.keenwrite.util.Diacritics;
		import com.keenwrite.util.FileWalker;
		import com.keenwrite.util.RangeValidator;

		import static java.lang.Math.max;
		import static java.nio.charset.StandardCharsets.UTF_8;
		-import static java.text.Normalizer.Form.NFKD;
		-import static java.text.Normalizer.normalize;
		import static javafx.application.Platform.runLater;
		import static javafx.geometry.Pos.CENTER;

		*/
		public final class ExportDialog extends AbstractDialog<ExportSettings> {
		- private static final String UNCRITIC = "\\p{InCombiningDiacriticalMarks}+";
		-
		private record Theme( Path path, String name ) implements Comparable<Theme> {
		/**

		*/
		public boolean matches( final String themeDir ) {
		- final var normalized = normalize( themeDir, NFKD );
		- final var name = normalized.replaceAll( UNCRITIC, "" );
		final var path = path().getFileName().toString();

		- return path.equalsIgnoreCase( name );
		+ return path.equalsIgnoreCase( Diacritics.remove( themeDir ) );
		}

Delta	4 lines added, 8 lines removed, 4-line decrease