playground update

playground/README.md

@@ -18,7 +18,7 @@ There also three folder `js`, `go`, `py`. Those folder have some basic source co
 
 The playground has js, py, go folder, so you can install either one your self in your PATH.
 If you want to try lua, Please check sumneko setup in init.lua make sure it pointed to correct path. By default it
-potint to ~/github/sumneko
+potint to ~/github/sumneko if not existed in your PATH.
 
 ## run init.lua
 

playground/init.lua

@@ -10,7 +10,7 @@ local sumneko_root_path = vim.fn.expand('$HOME') .. '/github/sumneko/lua-languag
 local sumneko_binary = vim.fn.expand('$HOME') .. '/github/sumneko/lua-language-server/bin/macOS/lua-language-server'
 
 local lua_cfg = {
-  cmd = { sumneko_binary, '-E', sumneko_root_path .. '/main.lua' },
+  -- cmd = { sumneko_binary, '-E', sumneko_root_path .. '/main.lua' },
   settings = {
     Lua = {
       runtime = { version = 'LuaJIT', path = vim.split(package.path, ';') },
@@ -19,6 +19,10 @@ local lua_cfg = {
   },
 }
 
+if vim.fn.executable('lua-language-server') == 0 then
+  lua_cfg.cmd = { sumneko_binary, '-E', sumneko_root_path .. '/main.lua' }
+end
+
 local function load_plugins()
   require('packer').startup({
     function(use)