From 369ed28b0b0c3f221b46816ad53a509d73c7e7ed Mon Sep 17 00:00:00 2001
From: Ben Lubas <benmlubas@gmail.com>
Date: Tue, 25 Jun 2024 12:51:55 -0400
Subject: [PATCH] fix(todo-introspector): check that the buffer is valid

---
 lua/neorg/modules/core/todo-introspector/module.lua | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lua/neorg/modules/core/todo-introspector/module.lua b/lua/neorg/modules/core/todo-introspector/module.lua
index 5d7d5907c..7d5806356 100644
--- a/lua/neorg/modules/core/todo-introspector/module.lua
+++ b/lua/neorg/modules/core/todo-introspector/module.lua
@@ -62,6 +62,9 @@ function module.public.attach_introspector(buffer)
 
     vim.api.nvim_buf_attach(buffer, false, {
         on_lines = vim.schedule_wrap(function(_, buf, _, first)
+            if not vim.api.nvim_buf_is_valid(buf) then
+                return
+            end
             -- If we delete the last line of a file `first` will point to a nonexistent line
             -- For this reason we fall back to the line count (accounting for 0-based indexing)
             -- whenever a change to the document is made.