rtfx-background-color spans if there is only one character between two styles

[appsofteng]

Expected Behavior

When setting a style of CodeArea the background should span only the required positions.

Actual Behavior

When there is one character between two styles with background then the character without style also gets the background. In the picture the first b and space should be without background.

Reproducible Demo

import java.util.List;

import org.fxmisc.richtext.CodeArea;

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class JFXDemo extends Application {

    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) throws Exception {

        CodeArea codeArea = new CodeArea("aba abba");
        codeArea.getStylesheets().add(getClass().getResource("fx.css").toExternalForm());
        codeArea.setStyle(0, 1, List.of("mystyle"));
        codeArea.setStyle(2, 3, List.of("mystyle"));
        
        codeArea.setStyle(4, 5, List.of("mystyle"));
        codeArea.setStyle(7, 8, List.of("mystyle"));        
        
        StackPane root = new StackPane();
       
        root.getChildren().add(codeArea);
        primaryStage.setScene(new Scene(root, 300, 250));
        primaryStage.show();

    }
}

.mystyle {
	-fx-fill: red;
	-rtfx-background-color: #ccc;
}

Environment info:

• RichTextFX Version: 0.8.2
• Operating System: Windows 7
• Java version: 10

[JordanMartinez]

Thanks for reporting!

The issue is caused by these two lines

[JordanMartinez]

I made another snapshot release that includes this fix

[appsofteng]

Works fine, thanks.