Added relative dates

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

@@ -1409,10 +1409,14 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
             tvSize.setVisibility(
                     message.totalSize != null && ("size".equals(sort) || "attachments".equals(sort))
                             ? View.VISIBLE : View.GONE);
-            SpannableStringBuilder time = new SpannableStringBuilderEx(
-                    ((date || date_fixed) && !date_week) && FragmentMessages.SORT_DATE_HEADER.contains(sort)
-                            ? TF.format(message.received)
-                            : Helper.getRelativeTimeSpanString(context, message.received));
+            SpannableStringBuilder time;
+            if (date_week)
+                time = new SpannableStringBuilderEx(Helper.getRelativeDateSpanString(context, message.received));
+            else
+                time = new SpannableStringBuilderEx(
+                        (date || date_fixed) && FragmentMessages.SORT_DATE_HEADER.contains(sort)
+                                ? TF.format(message.received)
+                                : Helper.getRelativeTimeSpanString(context, message.received));
             if (show_recent && message.recent)
                 time.setSpan(new UnderlineSpan(), 0, time.length(), 0);
             tvTime.setText(time);

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

@@ -147,6 +147,7 @@ import java.text.NumberFormat;
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Calendar;
 import java.util.Collections;
 import java.util.Comparator;
 import java.util.Date;
@@ -1998,6 +1999,16 @@ public class Helper {
         return android.text.format.DateFormat.getBestDateTimePattern(Locale.getDefault(), skeleton);
     }
 
+    static CharSequence getRelativeDateSpanString(Context context, long millis) {
+        Calendar cal0 = Calendar.getInstance();
+        Calendar cal1 = Calendar.getInstance();
+        cal0.setTimeInMillis(millis);
+        boolean thisMonth = (cal0.get(Calendar.MONTH) == cal1.get(Calendar.MONTH));
+        String skeleton = (thisMonth ? "MMM-d" : "Y-M-d");
+        String format = android.text.format.DateFormat.getBestDateTimePattern(Locale.getDefault(), skeleton);
+        return new SimpleDateFormat(format).format(millis);
+    }
+
     static CharSequence getRelativeTimeSpanString(Context context, long millis) {
         long now = System.currentTimeMillis();
         long span = Math.abs(now - millis);