From 84784a83913d12009b19649a7238369f7eca4c04 Mon Sep 17 00:00:00 2001
From: "github-actions[bot]"
 <41898282+github-actions[bot]@users.noreply.github.com>
Date: Wed, 1 Dec 2021 07:35:46 -0700
Subject: [PATCH] fix(diagnostic): set effective buffer number for
 DiagnosticChanged autocmd (#16485)

This enables use of <abuf> in autocommand handlers for
DiagnosticChanged.
---
 runtime/lua/vim/diagnostic.lua | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/runtime/lua/vim/diagnostic.lua b/runtime/lua/vim/diagnostic.lua
index 5c5631af98..71bf96baee 100644
--- a/runtime/lua/vim/diagnostic.lua
+++ b/runtime/lua/vim/diagnostic.lua
@@ -653,9 +653,11 @@ function M.set(namespace, bufnr, diagnostics, opts)
     M.show(namespace, bufnr, nil, opts)
   end
 
-  vim.api.nvim_command(
-    string.format("doautocmd <nomodeline> DiagnosticChanged %s", vim.api.nvim_buf_get_name(bufnr))
-  )
+  vim.api.nvim_buf_call(bufnr, function()
+    vim.api.nvim_command(
+      string.format("doautocmd <nomodeline> DiagnosticChanged %s", vim.api.nvim_buf_get_name(bufnr))
+    )
+  end)
 end
 
 --- Get namespace metadata.