fix the problem that commads cannot be registered in custom setup

resolve: https://github.com/neovim/nvim-lsp/issues/264

1 files changed, 18 insertions, 1 deletions

diff --git a/lua/nvim_lsp/configs.lua b/lua/nvim_lsp/configs.lua
index a70efdb5..6334be4b 100644
--- a/lua/nvim_lsp/configs.lua
+++ b/lua/nvim_lsp/configs.lua
@@ -19,6 +19,8 @@ function configs.__newindex(t, config_name, config_def)
         ['command.fn'] = {v[1], 'f'};
       }
     end
+  else
+    config_def.commands = {}
   end
 
   local M = {}
@@ -73,7 +75,17 @@ function configs.__newindex(t, config_name, config_def)
       filetypes = {config.filetype, 't', true};
       on_new_config = {config.on_new_config, 'f', true};
       on_attach = {config.on_attach, 'f', true};
+      commands = {config.commands, 't', true};
     }
+    if config.commands then
+      for k, v in pairs(config.commands) do
+        validate {
+          ['command.name'] = {k, 's'};
+          ['command.fn'] = {v[1], 'f'};
+        }
+      end
+    end
+
     config = tbl_extend("keep", config, default_config)
 
     local trigger
@@ -171,12 +183,17 @@ function configs.__newindex(t, config_name, config_def)
     if client.config._on_attach then
       client.config._on_attach(client)
     end
-    if config_def.commands then
+    if client.config.commands and not vim.tbl_isempty(client.config.commands) then
+      M.commands = util.tbl_deep_extend("force", M.commands, client.config.commands)
+    end
+    if not M.commands_created and not vim.tbl_isempty(M.commands) then
       -- Create the module commands
       util.create_module_commands(config_name, M.commands)
+      M.commands_created = true
     end
   end
 
+  M.commands_created = false
   M.commands = config_def.commands
   M.name = config_name
   M.document_config = config_def