From 6646fb456757e4c0d2f689831340e59054c8b597 Mon Sep 17 00:00:00 2001
From: M66B <M66B@users.noreply.github.com>
Date: Sun, 3 May 2020 23:30:01 +0200
Subject: [PATCH] Improved keyword sanitizer

---
 app/src/main/java/eu/faircode/email/MessageHelper.java | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/eu/faircode/email/MessageHelper.java b/app/src/main/java/eu/faircode/email/MessageHelper.java
index 2654405eee..6b67781292 100644
--- a/app/src/main/java/eu/faircode/email/MessageHelper.java
+++ b/app/src/main/java/eu/faircode/email/MessageHelper.java
@@ -54,6 +54,7 @@ import java.net.IDN;
 import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
 import java.security.NoSuchAlgorithmException;
+import java.text.Normalizer;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
@@ -2063,7 +2064,9 @@ public class MessageHelper {
                 continue;
             sb.append(kar);
         }
-        return sb.toString();
+
+        return Normalizer.normalize(sb.toString(), Normalizer.Form.NFKD)
+                .replaceAll("[^\\p{ASCII}]", "");
     }
 
     static String sanitizeEmail(String email) {