From: Florian Best <best@univention.de>
Date: Fri, 1 Oct 2021 22:46:07 +0000 (+0200)
Subject: fix[web]: fix ignoring quality=0 values in Accept-Language
X-Git-Tag: v6.2.0b1~35^2~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=455eb2929210c3348afdcaa5568b52103865f736;p=thirdparty%2Ftornado.git

fix[web]: fix ignoring quality=0 values in Accept-Language

`Accept-Language: en-US; q=0, de-DE; q=0.5` means that english MUST not
be selected.
---

diff --git a/tornado/web.py b/tornado/web.py
index b3efce998..8cbb2b43b 100644
--- a/tornado/web.py
+++ b/tornado/web.py
@@ -1293,7 +1293,8 @@ class RequestHandler(object):
                         score = 0.0
                 else:
                     score = 1.0
-                locales.append((parts[0], score))
+                if score > 0:
+                    locales.append((parts[0], score))
             if locales:
                 locales.sort(key=lambda pair: pair[1], reverse=True)
                 codes = [loc[0] for loc in locales]