Make sure marked text is visible

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

@@ -2780,6 +2780,8 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                         if (inline || show_images)
                             HtmlHelper.embedInlineImages(context, message.id, document, show_images);
 
+                        HtmlHelper.markText(document);
+
                         boolean disable_tracking = prefs.getBoolean("disable_tracking", true);
                         if (disable_tracking)
                             HtmlHelper.removeTrackingPixels(context, document);
@@ -5114,6 +5116,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                     HtmlHelper.autoLink(document);
                     HtmlHelper.setViewport(document, overview_mode);
                     HtmlHelper.embedInlineImages(context, message.id, document, true);
+                    HtmlHelper.markText(document);
                     if (disable_tracking)
                         HtmlHelper.removeTrackingPixels(context, document);
 

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

@@ -8921,6 +8921,8 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
                 if (message.isPlainOnly() && monospaced_pre)
                     HtmlHelper.restorePre(document);
 
+                HtmlHelper.markText(document);
+
                 HtmlHelper.embedInlineImages(context, id, document, true);
 
                 // onPageFinished will not be called if not all images can be loaded

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

@@ -2811,6 +2811,15 @@ public class HtmlHelper {
         return document;
     }
 
+    static Document markText(Document document) {
+        for (Element mark : document.select("mark")) {
+            String style = mark.attr("style");
+            mark.attr("style", mergeStyles(style, "font-style: italic;"));
+        }
+
+        return document;
+    }
+
     static void cleanup(Document d) {
         // https://www.chromestatus.com/feature/5756335865987072
         // Some messages contain 100 thousands of Apple spaces