fix: style.

HMCL/src/main/java/org/jackhuang/hmcl/ui/FXUtils.java

@@ -390,11 +390,19 @@ public final class FXUtils {
                 try {
                     Runtime.getRuntime().exec(new String[]{"explorer.exe", "/select,", file.toAbsolutePath().toString()});
                 } catch (IOException e) {
-                    Logging.LOG.log(Level.SEVERE, "Unable to open " + file + " by executing explorer /select", e);
+                    Logging.LOG.log(Level.SEVERE, "Unable to open " + file + " by executing explorer /select," + file, e);
+                }
+                break;
+            case OSX:
+                try {
+                    Runtime.getRuntime().exec(new String[]{"/usr/bin/open", "-R", file.toAbsolutePath().toString()});
+                } catch (IOException e) {
+                    Logging.LOG.log(Level.SEVERE, "Unable to open " + file + " by executing /usr/bin/open -R " + file, e);
                 }
                 break;
             default:
-                // Currently unsupported.
+                // We do not have an universal method to show file in file manager.
+                openFolder(file.getParent().toFile());
                 break;
         }
     }

HMCL/src/main/java/org/jackhuang/hmcl/ui/versions/DownloadPage.java

@@ -204,14 +204,14 @@ public class DownloadPage extends Control implements DecoratorPage {
             return;
         }
 
-        Controllers.taskDialog(Task.composeAsync(() -> {
+        Controllers.taskDialog(
+                Task.composeAsync(() -> {
                     FileDownloadTask task = new FileDownloadTask(NetworkUtils.toURL(file.getFile().getUrl()), dest, file.getFile().getIntegrityCheck());
                     task.setName(file.getName());
                     return task;
                 }),
                 i18n("message.downloading"),
-                TaskCancellationAction.NORMAL
-        );
+                TaskCancellationAction.NORMAL);
     }
 
     @Override