remove uses of arg in the codebase

etc/dispatch.lua

@@ -50,7 +50,7 @@ function socket.protect(f)
   return function(...)
     local co = coroutine.create(f)
     while true do
-      local results = {coroutine.resume(co, base.unpack(arg))}
+      local results = {coroutine.resume(co, ...)}
       local status = table.remove(results, 1)
       if not status then
         if base.type(results[1]) == 'table' then
@@ -104,8 +104,7 @@ local function cowrap(dispatcher, tcp, error)
     -- don't override explicitly.
     local metat = { __index = function(table, key)
         table[key] = function(...)
-            arg[1] = tcp
-            return tcp[key](base.unpack(arg))
+            return tcp[key](tcp,select(2,...))
         end
         return table[key]
     end}

test/utestclnt.lua

@@ -4,24 +4,24 @@ local socket = require"socket.unix"
 host = "luasocket"
 
 function pass(...)
-    local s = string.format(unpack(arg))
+    local s = string.format(...)
     io.stderr:write(s, "\n")
 end
 
 function fail(...)
-    local s = string.format(unpack(arg))
+    local s = string.format(...)
     io.stderr:write("ERROR: ", s, "!\n")
 socket.sleep(3)
     os.exit()
 end
 
 function warn(...)
-    local s = string.format(unpack(arg))
+    local s = string.format(...)
     io.stderr:write("WARNING: ", s, "\n")
 end
 
 function remote(...)
-    local s = string.format(unpack(arg))
+    local s = string.format(...)
     s = string.gsub(s, "\n", ";")
     s = string.gsub(s, "%s+", " ")
     s = string.gsub(s, "^%s*", "")