From 43b65d1de54b90a7cedc7c01d9d5c2a659fe43a1 Mon Sep 17 00:00:00 2001
From: M66B <M66B@users.noreply.github.com>
Date: Wed, 14 Apr 2021 18:23:04 +0200
Subject: [PATCH] Fix spaces in mime encoded protected subjects

---
 app/src/main/java/eu/faircode/email/MessageHelper.java | 4 +++-
 1 file changed, 3 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 d439d828eb..5241460dbb 100644
--- a/app/src/main/java/eu/faircode/email/MessageHelper.java
+++ b/app/src/main/java/eu/faircode/email/MessageHelper.java
@@ -2498,8 +2498,10 @@ public class MessageHelper {
                 ContentType ct = new ContentType(part.getContentType());
                 if ("v1".equals(ct.getParameter("protected-headers"))) {
                     String[] subject = part.getHeader("subject");
-                    if (subject != null && subject.length != 0)
+                    if (subject != null && subject.length != 0) {
+                        subject[0] = subject[0].replaceAll("\\?=[\\r\\n\\t ]+=\\?", "\\?==\\?");
                         parts.protected_subject = decodeMime(subject[0]);
+                    }
                 }
             } catch (Throwable ex) {
                 Log.e(ex);