From e1789bc54483d76ac9ddb40b633d1645c8281914 Mon Sep 17 00:00:00 2001
From: Johan <johan@niklasson-embedded.se>
Date: Fri, 21 Aug 2026 04:38:28 +0200
Subject: [PATCH] fix(lsp): check completionProvider key existence, not
 emptiness (#5157)

completionProvider: {} is valid per the LSP spec (means completion
enabled with default options). The old !empty() check incorrectly
rejected empty objects, causing ALE to silently disable completion
for servers that send completionProvider: {}.
---
 autoload/ale/lsp.vim | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/autoload/ale/lsp.vim b/autoload/ale/lsp.vim
index 5b961d30a..1aa349314 100644
--- a/autoload/ale/lsp.vim
+++ b/autoload/ale/lsp.vim
@@ -265,7 +265,9 @@ function! ale#lsp#UpdateCapabilities(conn_id, capabilities) abort
         let l:conn.capabilities.code_actions = 1
     endif
 
-    if !empty(get(a:capabilities, 'completionProvider'))
+    let l:completion = get(a:capabilities, 'completionProvider', v:false)
+
+    if type(l:completion) is v:t_dict || l:completion is v:true
         let l:conn.capabilities.completion = 1
     endif