From c634b9ac046ee80ca697098b7a0d723f73660e16 Mon Sep 17 00:00:00 2001
From: Florent Daigniere <nextgens@freenetproject.org>
Date: Mon, 19 Dec 2022 10:33:05 +0100
Subject: [PATCH] IMAP folder names may contain characters outside of \w:
 [a-zA-Z0-9]

---
 core/admin/mailu/ui/forms.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/admin/mailu/ui/forms.py b/core/admin/mailu/ui/forms.py
index 959f46b2..c6335559 100644
--- a/core/admin/mailu/ui/forms.py
+++ b/core/admin/mailu/ui/forms.py
@@ -47,7 +47,7 @@ class MultipleFoldersVerify(object):
         self.message = message
 
     def __call__(self, form, field):
-        pattern = re.compile(r'^\w+(\s*,\s*\w+)*$')
+        pattern = re.compile(r'^[^,]+(,[^,]+)*$')
         if not pattern.match(field.data.replace(" ", "")):
             raise validators.ValidationError(self.message)