From 433dea8c825919f10417078a39cb72fe157fbcba Mon Sep 17 00:00:00 2001
From: Markus Koller <markus@snafu.ch>
Date: Fri, 6 Jun 2025 17:09:42 +0200
Subject: [PATCH 1/2] fix: restore :LspStart/LspStop behaviour without
 arguments

After the refactoring in e4d1c8b for Neovim 0.11.2 these commands now
require an argument.

This restores the previous behaviour where `:LspStart` defaults to
enabling all servers matching the filetype of the current buffer, and
`:LspStop` defaults to disabling all servers attached to the current
buffer.
---
 plugin/lspconfig.lua | 38 +++++++++++++++++++++++++++++++-------
 1 file changed, 31 insertions(+), 7 deletions(-)

diff --git a/plugin/lspconfig.lua b/plugin/lspconfig.lua
index 4fb5e74a99..5db2550caa 100644
--- a/plugin/lspconfig.lua
+++ b/plugin/lspconfig.lua
@@ -97,12 +97,24 @@ if vim.version.ge(vim.version(), { 0, 11, 2 }) then
   end
 
   api.nvim_create_user_command('LspStart', function(info)
-    if vim.lsp.config[info.args] == nil then
-      vim.notify(("Invalid server name '%s'"):format(info.args))
-      return
+    local servers = info.fargs
+
+    -- Default to enabling all servers matching the filetype of the current buffer.
+    -- This assumes that they've been explicitly configured through `vim.lsp.config`,
+    -- otherwise they won't be present in the private `vim.lsp.config._configs` table.
+    if #servers == 0 then
+      local filetype = vim.bo.filetype
+      for name, _ in pairs(vim.lsp.config._configs) do
+        local filetypes = vim.lsp.config[name].filetypes
+        if filetypes and vim.tbl_contains(filetypes, filetype) then
+          table.insert(servers, name)
+        end
+      end
     end
 
-    vim.lsp.enable(info.args)
+    for _, name in ipairs(servers) do
+      vim.lsp.enable(name)
+    end
   end, {
     desc = 'Enable and launch a language server',
     nargs = '?',
@@ -133,16 +145,28 @@ if vim.version.ge(vim.version(), { 0, 11, 2 }) then
   })
 
   api.nvim_create_user_command('LspStop', function(info)
-    for _, name in ipairs(info.fargs) do
+    local clients = info.fargs
+
+    -- Default to disabling all servers on current buffer
+    if #clients == 0 then
+      clients = vim
+        .iter(vim.lsp.get_clients({ bufnr = vim.api.nvim_get_current_buf() }))
+        :map(function(client)
+          return client.name
+        end)
+        :totable()
+    end
+
+    for _, name in ipairs(clients) do
       if vim.lsp.config[name] == nil then
-        vim.notify(("Invalid server name '%s'"):format(info.args))
+        vim.notify(("Invalid server name '%s'"):format(name))
       else
         vim.lsp.enable(name, false)
       end
     end
   end, {
     desc = 'Disable and stop the given client(s)',
-    nargs = '+',
+    nargs = '*',
     complete = complete_client,
   })
 

From ee7f5d7a545b035df608a4621b50da07e5cdedff Mon Sep 17 00:00:00 2001
From: "Justin M. Keyes" <justinkz@gmail.com>
Date: Sat, 7 Jun 2025 18:19:53 -0700
Subject: [PATCH 2/2] Update plugin/lspconfig.lua

---
 plugin/lspconfig.lua | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/plugin/lspconfig.lua b/plugin/lspconfig.lua
index 5db2550caa..a5cd471538 100644
--- a/plugin/lspconfig.lua
+++ b/plugin/lspconfig.lua
@@ -112,9 +112,7 @@ if vim.version.ge(vim.version(), { 0, 11, 2 }) then
       end
     end
 
-    for _, name in ipairs(servers) do
-      vim.lsp.enable(name)
-    end
+    vim.lsp.enable(servers)
   end, {
     desc = 'Enable and launch a language server',
     nargs = '?',