From 50dfca52edaf8af250239bca59129503d21c2f91 Mon Sep 17 00:00:00 2001
From: Christian Brabandt <cb@256bit.org>
Date: Tue, 2 Feb 2021 12:25:16 +0100
Subject: [PATCH] nvimlsp: correctly call the lua functions for nvimlsp

closes #2324

Note: seems like one needs to call v:lua.vim.lsp.buf_get_clients() and
even then some older neovims do not understand that. So wrap it around
an exists() call and hope this works for all neovims.
---
 autoload/airline/extensions/nvimlsp.vim | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/autoload/airline/extensions/nvimlsp.vim b/autoload/airline/extensions/nvimlsp.vim
index a5521894..e506b8ad 100644
--- a/autoload/airline/extensions/nvimlsp.vim
+++ b/autoload/airline/extensions/nvimlsp.vim
@@ -14,7 +14,8 @@ function! s:airline_nvimlsp_count(cnt, symbol) abort
 endfunction
 
 function! airline#extensions#nvimlsp#get(type) abort
-  if vim.lsp.buf_get_clients() == 0
+  if !exists("v:lua.vim.lsp.buf_get_clients()") || 
+        \ empty(v:lua.vim.lsp.buf_get_clients(0))
     return ''
   endif