From d6a6eed4f3bccd676e8c3f92be89b4f0d96fc0b0 Mon Sep 17 00:00:00 2001
From: Barrett Ruth <62671086+barrettruth@users.noreply.github.com>
Date: Mon, 23 Mar 2026 07:30:35 -0400
Subject: [PATCH] feat(lsp): attach to buftype=help buffers #38412

Problem: `vim.lsp.enable()` skips all buffers with non-empty `buftype`,
including `help` buffers. LSPs targeting `filetype='help'` never
auto-attach despite help buffers being real files.

Solution: Expand the `buftype` guard in `lsp_enable_callback` to allow
`help` alongside `""`.
---
 runtime/lua/vim/lsp.lua | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/runtime/lua/vim/lsp.lua b/runtime/lua/vim/lsp.lua
index 184a784faa..9a956b7b51 100644
--- a/runtime/lua/vim/lsp.lua
+++ b/runtime/lua/vim/lsp.lua
@@ -520,8 +520,8 @@ end
 
 --- @param bufnr integer
 local function lsp_enable_callback(bufnr)
-  -- Only ever attach to buffers that represent an actual file.
-  if vim.bo[bufnr].buftype ~= '' then
+  -- Only ever attach to buffers (including "help") that represent an actual file.
+  if vim.bo[bufnr].buftype ~= '' and vim.bo[bufnr].buftype ~= 'help' then
     return
   end