From 670c7609c85547ef041af8cf17139a396d6af050 Mon Sep 17 00:00:00 2001
From: Hongbo Liu <hongboliu@tencent.com>
Date: Wed, 30 Aug 2023 11:14:58 -0400
Subject: [PATCH] fix(filetype): make sure buffer is valid before call
 nvim_buf_call (#24922)

---
 runtime/filetype.lua | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/runtime/filetype.lua b/runtime/filetype.lua
index 4a4f37a1c4..3f2a7c2960 100644
--- a/runtime/filetype.lua
+++ b/runtime/filetype.lua
@@ -8,6 +8,9 @@ vim.api.nvim_create_augroup('filetypedetect', { clear = false })
 vim.api.nvim_create_autocmd({ 'BufRead', 'BufNewFile', 'StdinReadPost' }, {
   group = 'filetypedetect',
   callback = function(args)
+    if not vim.api.nvim_buf_is_valid(args.buf) then
+      return
+    end
     local ft, on_detect = vim.filetype.match({ filename = args.match, buf = args.buf })
     if not ft then
       -- Generic configuration file used as fallback