From 69c1dc8b5f3d215d4a0538265b2d257c2ed7a8fa Mon Sep 17 00:00:00 2001
From: w0rp <devw0rp@gmail.com>
Date: Fri, 6 Jan 2023 19:02:35 +0000
Subject: Fix #4413 - Avoid errors for invalid buffers in ale#virtualtext#Clear

---
 autoload/ale/virtualtext.vim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/autoload/ale/virtualtext.vim b/autoload/ale/virtualtext.vim
index 3ef82680..0f2b2173 100644
--- a/autoload/ale/virtualtext.vim
+++ b/autoload/ale/virtualtext.vim
@@ -75,7 +75,7 @@ function! ale#virtualtext#GetComment(buffer) abort
 endfunction
 
 function! ale#virtualtext#Clear(buffer) abort
-    if !s:has_virt_text
+    if !s:has_virt_text || !bufexists(str2nr(a:buffer))
         return
     endif
 
-- 
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