Add SoftBreakAddsNewLinePlugin plugin in core module

CHANGELOG.md

@@ -13,6 +13,8 @@
   ```
 * `JLatexMathPlugin`: add `theme` (to customize both inlines and blocks)
 * `JLatexMathPlugin`: add `renderMode` to use previous (pre `4.3.0`) LaTeX rendering
+* add `SoftBreakAddsNewLinePlugin` plugin (`core` module)
+
 
 # 4.2.2
 * Fixed `AsyncDrawable` display when it has placeholder with empty bounds ([#189])

markwon-core/src/main/java/io/noties/markwon/SoftBreakAddsNewLinePlugin.java

@@ -0,0 +1,26 @@
+package io.noties.markwon;
+
+import androidx.annotation.NonNull;
+
+import org.commonmark.node.SoftLineBreak;
+
+/**
+ * @since 4.3.0-SNAPSHOT
+ */
+public class SoftBreakAddsNewLinePlugin extends AbstractMarkwonPlugin {
+
+    @NonNull
+    public static SoftBreakAddsNewLinePlugin create() {
+        return new SoftBreakAddsNewLinePlugin();
+    }
+
+    @Override
+    public void configureVisitor(@NonNull MarkwonVisitor.Builder builder) {
+        builder.on(SoftLineBreak.class, new MarkwonVisitor.NodeVisitor<SoftLineBreak>() {
+            @Override
+            public void visit(@NonNull MarkwonVisitor visitor, @NonNull SoftLineBreak softLineBreak) {
+                visitor.forceNewLine();
+            }
+        });
+    }
+}

sample/src/main/java/io/noties/markwon/sample/basicplugins/BasicPluginsActivity.java

@@ -21,6 +21,7 @@ import io.noties.markwon.Markwon;
 import io.noties.markwon.MarkwonConfiguration;
 import io.noties.markwon.MarkwonSpansFactory;
 import io.noties.markwon.MarkwonVisitor;
+import io.noties.markwon.SoftBreakAddsNewLinePlugin;
 import io.noties.markwon.core.MarkwonTheme;
 import io.noties.markwon.image.ImageItem;
 import io.noties.markwon.image.ImagesPlugin;
@@ -35,15 +36,17 @@ public class BasicPluginsActivity extends ActivityWithMenuOptions {
 
     private TextView textView;
 
-
     @NonNull
     @Override
     public MenuOptions menuOptions() {
         return MenuOptions.create()
                 .add("paragraphSpan", this::paragraphSpan)
                 .add("disableNode", this::disableNode)
+                .add("customizeTheme", this::customizeTheme)
                 .add("linkWithMovementMethod", this::linkWithMovementMethod)
-                .add("imagesPlugin", this::imagesPlugin);
+                .add("imagesPlugin", this::imagesPlugin)
+                .add("softBreakAddsSpace", this::softBreakAddsSpace)
+                .add("softBreakAddsNewLine", this::softBreakAddsNewLine);
     }
 
     @Override
@@ -217,6 +220,28 @@ public class BasicPluginsActivity extends ActivityWithMenuOptions {
         markwon.setMarkdown(textView, markdown);
     }
 
+    private void softBreakAddsSpace() {
+        // default behavior
+
+        final String md = "" +
+                "Hello there ->(line)\n(break)<- going on and on";
+
+        Markwon.create(this).setMarkdown(textView, md);
+    }
+
+    private void softBreakAddsNewLine() {
+        // insert a new line when markdown has a soft break
+
+        final Markwon markwon = Markwon.builder(this)
+                .usePlugin(SoftBreakAddsNewLinePlugin.create())
+                .build();
+
+        final String md = "" +
+                "Hello there ->(line)\n(break)<- going on and on";
+
+        markwon.setMarkdown(textView, md);
+    }
+
 //    public void step_6() {
 //
 //        final Markwon markwon = Markwon.builder(this)