fix: support :LspRestart without arguments #3895v2.3.0

Problem:
After the refactoring in e4d1c8b for Neovim 0.11.2 this command now
requires an argument.

Solution:
Restore the previous behaviour where `:LspRestart` defaults to
restarting all active servers.

1 files changed, 16 insertions, 4 deletions

diff --git a/plugin/lspconfig.lua b/plugin/lspconfig.lua
index a5cd4715..7cde1386 100644
--- a/plugin/lspconfig.lua
+++ b/plugin/lspconfig.lua
@@ -120,9 +120,21 @@ if vim.version.ge(vim.version(), { 0, 11, 2 }) then
   })
 
   api.nvim_create_user_command('LspRestart', function(info)
-    for _, name in ipairs(info.fargs) do
+    local clients = info.fargs
+
+    -- Default to restarting all active servers
+    if #clients == 0 then
+      clients = vim
+        .iter(vim.lsp.get_clients())
+        :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
@@ -130,7 +142,7 @@ if vim.version.ge(vim.version(), { 0, 11, 2 }) then
 
     local timer = assert(vim.uv.new_timer())
     timer:start(500, 0, function()
-      for _, name in ipairs(info.fargs) do
+      for _, name in ipairs(clients) do
         vim.schedule_wrap(function(x)
           vim.lsp.enable(x)
         end)(name)
@@ -138,7 +150,7 @@ if vim.version.ge(vim.version(), { 0, 11, 2 }) then
     end)
   end, {
     desc = 'Restart the given client(s)',
-    nargs = '+',
+    nargs = '*',
     complete = complete_client,
   })