From 0e20e00c8d53433507f178098c17d152d754de78 Mon Sep 17 00:00:00 2001
From: Thomas Oettli <spacefreak@noop.ch>
Date: Mon, 15 Apr 2019 17:34:42 +0200
Subject: [PATCH] [Minor] mime_types: decode hex encoded characters in
 filenames to improve file extension detection

---
 src/plugins/lua/mime_types.lua | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/plugins/lua/mime_types.lua b/src/plugins/lua/mime_types.lua
index c898540c09..1141047a27 100644
--- a/src/plugins/lua/mime_types.lua
+++ b/src/plugins/lua/mime_types.lua
@@ -851,6 +851,9 @@ local function check_mime_type(task)
               fname:sub(1, ch_pos)))
     end
 
+    -- Decode hex encoded characters
+    fname = string.gsub(fname, '%%(%x%x)', function (hex) return string.char(tonumber(hex,16)) end )
+
     -- Replace potentially bad characters with '?'
     fname = fname:gsub('[^%s%g]', '?')
 
-- 
2.47.3