Replace Apple converted spaces

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

@@ -1696,6 +1696,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                     args.putBoolean("signed_data", signed_data);
 
                     Document document = JsoupEx.parse(body);
+                    HtmlHelper.cleanup(document);
 
                     // Check for inline encryption
                     int begin = body.indexOf(Helper.PGP_BEGIN_MESSAGE);
@@ -1760,7 +1761,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                         return document.html();
                     } else {
                         // Cleanup message
-                        document = HtmlHelper.sanitize(context, body, show_images, true, true);
+                        document = HtmlHelper.sanitize(context, document, show_images, true, true);
 
                         // Collapse quotes
                         if (!show_quotes) {

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

@@ -239,12 +239,13 @@ public class HtmlHelper {
     }
 
     static Document sanitize(Context context, String html, boolean show_images, boolean autolink) {
-        return sanitize(context, html, show_images, autolink, false);
+        Document parsed = JsoupEx.parse(html);
+        return sanitize(context, parsed, show_images, autolink, false);
     }
 
-    static Document sanitize(Context context, String html, boolean show_images, boolean autolink, boolean more) {
+    static Document sanitize(Context context, Document parsed, boolean show_images, boolean autolink, boolean more) {
         try {
-            return _sanitize(context, html, show_images, autolink, more);
+            return _sanitize(context, parsed, show_images, autolink, more);
         } catch (Throwable ex) {
             // OutOfMemoryError
             Log.e(ex);
@@ -256,14 +257,13 @@ public class HtmlHelper {
         }
     }
 
-    private static Document _sanitize(Context context, String html, boolean show_images, boolean autolink, boolean more) {
+    private static Document _sanitize(Context context, Document parsed, boolean show_images, boolean autolink, boolean more) {
         SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
         boolean text_color = prefs.getBoolean("text_color", true);
         boolean display_hidden = prefs.getBoolean("display_hidden", false);
         boolean disable_tracking = prefs.getBoolean("disable_tracking", true);
 
         // https://chromium.googlesource.com/chromium/blink/+/master/Source/core/css/html.css
-        Document parsed = JsoupEx.parse(html);
 
         // <!--[if ...]><!--> ... <!--<![endif]-->
         // https://docs.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/compatibility/hh801214(v=vs.85)
@@ -1197,6 +1197,16 @@ public class HtmlHelper {
         return ssb;
     }
 
+    static void cleanup(Document d) {
+        for (Element aspace : d.select(".Apple-converted-space"))
+            if (aspace.previousSibling() instanceof TextNode) {
+                TextNode tnode = (TextNode) aspace.previousSibling();
+                tnode.text(tnode.text() + " ");
+                aspace.remove();
+            } else
+                aspace.replaceWith(new TextNode(" "));
+    }
+
     static boolean truncate(Document d, boolean reformat) {
         int at = (reformat ? MAX_FORMAT_TEXT_SIZE : MAX_FULL_TEXT_SIZE);