From 13d80739b6555bc11cfbca6183fa44591b323407 Mon Sep 17 00:00:00 2001
From: hius07 <62179190+hius07@users.noreply.github.com>
Date: Sun, 5 Dec 2021 23:08:20 +0200
Subject: [PATCH] docsettings fix no name file (#8517)

When trying to open/delete a supported document with empty name (eg .txt) got an error

./luajit: frontend/docsettings.lua:118: attempt to concatenate a nil value
---
 frontend/docsettings.lua | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/frontend/docsettings.lua b/frontend/docsettings.lua
index 466f3dd5b..5d68cbb81 100644
--- a/frontend/docsettings.lua
+++ b/frontend/docsettings.lua
@@ -115,7 +115,7 @@ function DocSettings:open(docfile)
         -- can handle two files with only different suffixes.
         new.sidecar_file = self:getSidecarFile(docfile)
         new.legacy_sidecar_file = sidecar.."/"..
-                                  docfile:match("([^%/]+%..+)")..".lua"
+                                  ffiutil.basename(docfile)..".lua"
     end
 
     local candidates = {}