lsp-delay.patch

From 2e6c09838f88803f31d229002715628639631897 Mon Sep 17 00:00:00 2001
From: Brian Shu <[email protected]>
Date: Wed, 17 Mar 2021 17:44:18 -0400
Subject: [PATCH] lsp: fix blocking in closing of clients

---
 runtime/lua/vim/lsp.lua | 33 ++++++++++++++++++++++++++++++---
 1 file changed, 30 insertions(+), 3 deletions(-)

diff --git a/runtime/lua/vim/lsp.lua b/runtime/lua/vim/lsp.lua
index a6f118abdec9..1db9fd43acb0 100644
--- a/runtime/lua/vim/lsp.lua
+++ b/runtime/lua/vim/lsp.lua
@@ -1057,11 +1057,38 @@ function lsp._vim_exit_handler()
     client.stop()
   end
 
-  if not vim.wait(500, function() return tbl_isempty(active_clients) end, 50) then
-    for _, client in pairs(active_clients) do
-      client.stop(true)
+  local function wait_async(timeout, ms, predicate, cb)
+    local timer = uv.new_timer()
+    local time = 0
+
+    local function done(in_time)
+      timer:stop()
+      timer:close()
+      cb(in_time)
     end
+
+    timer:start(0, ms, function()
+      if predicate() == true then
+        done(true)
+        return
+      end
+
+      if time == timeout then
+        done(false)
+        return
+      end
+
+      time = time + ms
+    end)
   end
+
+  wait_async(500, 50, function() return tbl_isempty(active_clients) end, function(in_time)
+    if not in_time then
+      for _, client in pairs(active_clients) do
+        client.stop(true)
+      end
+    end
+  end)
 end
 
 nvim_command("autocmd VimLeavePre * lua vim.lsp._vim_exit_handler()")