Use experiments settings for message sections

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

@@ -327,6 +327,7 @@ public class HtmlHelper {
         boolean disable_tracking = prefs.getBoolean("disable_tracking", true);
         boolean parse_classes = prefs.getBoolean("parse_classes", false);
         boolean inline_images = prefs.getBoolean("inline_images", false);
+        boolean experiments = prefs.getBoolean("experiments", false);
 
         int textColorPrimary = Helper.resolveColor(context, android.R.attr.textColorPrimary);
 
@@ -792,7 +793,7 @@ public class HtmlHelper {
             if (hasVisibleContent(row.childNodes())) {
                 Element next = row.nextElementSibling();
                 if (next != null && "tr".equals(next.tagName()))
-                    row.appendElement("hr");
+                    row.appendElement(experiments ? "hr" : "br");
             }
         }
 
@@ -1809,6 +1810,7 @@ public class HtmlHelper {
             @Nullable Html.ImageGetter imageGetter, @Nullable Html.TagHandler tagHandler) {
         SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
         boolean debug = prefs.getBoolean("debug", false);
+        boolean experiments = prefs.getBoolean("experiments", false);
 
         final int colorPrimary = Helper.resolveColor(context, R.attr.colorPrimary);
         final int colorAccent = Helper.resolveColor(context, R.attr.colorAccent);
@@ -2099,26 +2101,28 @@ public class HtmlHelper {
                                 newline(ssb.length());
                                 break;
                             case "hr":
-                                int lhr = 0;
-                                for (LineSpan ls : ssb.getSpans(0, ssb.length(), LineSpan.class)) {
-                                    int end = ssb.getSpanEnd(ls);
-                                    if (end > lhr)
-                                        lhr = end;
-                                }
+                                if (experiments) {
+                                    int lhr = 0;
+                                    for (LineSpan ls : ssb.getSpans(0, ssb.length(), LineSpan.class)) {
+                                        int end = ssb.getSpanEnd(ls);
+                                        if (end > lhr)
+                                            lhr = end;
+                                    }
 
-                                boolean nls = true;
-                                for (int i = lhr; i < ssb.length(); i++)
-                                    if (ssb.charAt(i) != '\n') {
-                                        nls = false;
+                                    boolean nls = true;
+                                    for (int i = lhr; i < ssb.length(); i++)
+                                        if (ssb.charAt(i) != '\n') {
+                                            nls = false;
+                                            break;
+                                        }
+                                    if (nls)
                                         break;
-                                    }
-                                if (nls)
-                                    break;
 
-                                while (ssb.length() > 1 &&
-                                        ssb.charAt(ssb.length() - 2) == '\n' &&
-                                        ssb.charAt(ssb.length() - 1) == '\n')
-                                    ssb.delete(ssb.length() - 1, ssb.length());
+                                    while (ssb.length() > 1 &&
+                                            ssb.charAt(ssb.length() - 2) == '\n' &&
+                                            ssb.charAt(ssb.length() - 1) == '\n')
+                                        ssb.delete(ssb.length() - 1, ssb.length());
+                                }
 
                                 ssb.append("\n" + LINE + "\n");
                                 float stroke = context.getResources().getDisplayMetrics().density;