From 0b9df63d1349a9c58cd2c6ab2e43d0d348bd89cb Mon Sep 17 00:00:00 2001
From: rayx <rayx.cn@gmail.com>
Date: Sun, 4 Jul 2021 07:34:38 +1000
Subject: [PATCH] fix: prevent dirname returning '/' if path is empty string

---
 lua/lspconfig/util.lua | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lua/lspconfig/util.lua b/lua/lspconfig/util.lua
index 89fca86935..c4c21c2264 100644
--- a/lua/lspconfig/util.lua
+++ b/lua/lspconfig/util.lua
@@ -121,7 +121,9 @@ M.path = (function()
     local strip_dir_pat = path_sep.."([^"..path_sep.."]+)$"
     local strip_sep_pat = path_sep.."$"
     dirname = function(path)
-      if not path then return end
+      if not path or #path == 0 then
+        return
+      end
       local result = path:gsub(strip_sep_pat, ""):gsub(strip_dir_pat, "")
       if #result == 0 then
         return "/"