Added Markdown table support

app/build.gradle

@@ -485,6 +485,9 @@ configurations.configureEach {
     // paging-runtime: AsyncPagedListDiffer, LivePagedListBuilder, PagedListAdapter, PagedStorageDiffHelper
 
     exclude group: "androidx.emoji2", module: "emoji2"
+
+    // Markwon
+    exclude group: "com.atlassian.commonmark", module: "commonmark"
 }
 
 configurations.configureEach {
@@ -557,6 +560,7 @@ dependencies {
     def vcard_version = "0.12.1"
     def relinker_version = "1.4.5"
     def markwon_version = "4.6.2"
+    def commonmark_version = "0.21.0"
     def bouncycastle_version = "1.77"
     def colorpicker_version = "0.0.15"
     def overscroll_version = "1.1.1"
@@ -767,6 +771,12 @@ dependencies {
     implementation "io.noties.markwon:html:$markwon_version"
     implementation "io.noties.markwon:editor:$markwon_version"
 
+    // https://github.com/commonmark/commonmark-java
+    // https://mvnrepository.com/artifact/org.commonmark
+    implementation "org.commonmark:commonmark:$commonmark_version";
+    implementation "org.commonmark:commonmark-ext-gfm-tables:$commonmark_version";
+    implementation "org.commonmark:commonmark-ext-gfm-strikethrough:$commonmark_version";
+
     // // https://github.com/QuadFlask/colorpicker
     //implementation "com.github.QuadFlask:colorpicker:$colorpicker_version"
     implementation project(':colorpicker')

app/src/main/java/eu/faircode/email/Markdown.java

@@ -19,16 +19,29 @@ package eu.faircode.email;
     Copyright 2018-2024 by Marcel Bokhorst (M66B)
 */
 
+import org.commonmark.Extension;
+import org.commonmark.ext.gfm.strikethrough.StrikethroughExtension;
+import org.commonmark.ext.gfm.tables.TablesExtension;
 import org.commonmark.node.Node;
 import org.commonmark.parser.Parser;
 import org.commonmark.renderer.html.HtmlRenderer;
 import org.jsoup.nodes.Document;
 
+import java.util.Arrays;
+import java.util.List;
+
 public class Markdown {
     static String toHtml(String markdown) {
-        Parser p = Parser.builder().build();
+        List<Extension> extensions = Arrays.asList(
+                TablesExtension.create(),
+                StrikethroughExtension.create());
+        Parser p = Parser.builder()
+                .extensions(extensions)
+                .build();
         Node d = p.parse(markdown);
-        HtmlRenderer r = HtmlRenderer.builder().build();
+        HtmlRenderer r = HtmlRenderer.builder()
+                .extensions(extensions)
+                .build();
         return r.render(d);
     }