From 4feb684c893baa80c183a5ed94b0772d60ff3e25 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sat, 9 Nov 2019 13:46:46 +0530
Subject: [PATCH] Exclude improperly named entries from ISO-639-3

Fixes #1851909 [Some strange languages is shown in the list](https://bugs.launchpad.net/calibre/+bug/1851909)
---
 setup/translations.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/setup/translations.py b/setup/translations.py
index 7862b39326..02964e8c91 100644
--- a/setup/translations.py
+++ b/setup/translations.py
@@ -813,6 +813,8 @@ class ISO639(Command):  # {{{
             name = x.get('name')
             if name:
                 name = unicode_type(name)
+            if not name or name[0] in '!~=/\'"':
+                continue
 
             if two is not None:
                 by_2[two] = name