clear environment in headless instance

possible fix for #78

Author: jbyuki

lua/osv/init.lua

@@ -219,7 +219,7 @@ function M.launch(opts)
 
   else
     local clean_args = { vim.v.progpath, '-u', 'NONE', '-i', 'NONE', '-n', '--embed', '--headless' }
-    nvim_server = vim.fn.jobstart(clean_args, {rpc = true})
+    nvim_server = vim.fn.jobstart(clean_args, {rpc = true,clear_env=true})
     vim.fn.rpcrequest(nvim_server, 'nvim_exec_lua', 'vim.o.runtimepath = ...', { vim.o.runtimepath })
     vim.fn.rpcrequest(nvim_server, 'nvim_exec_lua', 'vim.o.packpath = ...', { vim.o.packpath })
   end
@@ -1874,7 +1874,7 @@ function M.run_this(opts)
   end
 
   local clean_args = { vim.v.progpath, '-u', 'NONE', '-i', 'NONE', '-n', '--embed', '--headless' }
-  nvim_server = vim.fn.jobstart(clean_args, {rpc = true})
+  nvim_server = vim.fn.jobstart(clean_args, {rpc = true,clear_env=true})
   vim.fn.rpcrequest(nvim_server, 'nvim_exec_lua', 'vim.o.runtimepath = ...', { vim.o.runtimepath })
   vim.fn.rpcrequest(nvim_server, 'nvim_exec_lua', 'vim.o.packpath = ...', { vim.o.packpath })
   auto_nvim = nvim_server

src/launch_headless.lua.t2

@@ -1,6 +1,6 @@
 ;;; lua-debug
 ;; launch headless instance with clean environment
 local clean_args = { vim.v.progpath, '-u', 'NONE', '-i', 'NONE', '-n', '--embed', '--headless' }
-nvim_server = vim.fn.jobstart(clean_args, {rpc = true})
+nvim_server = vim.fn.jobstart(clean_args, {rpc = true,clear_env=true})
 vim.fn.rpcrequest(nvim_server, 'nvim_exec_lua', 'vim.o.runtimepath = ...', { vim.o.runtimepath })
 vim.fn.rpcrequest(nvim_server, 'nvim_exec_lua', 'vim.o.packpath = ...', { vim.o.packpath })