test: add local variables in build.lua

stone-zeng · stone-zeng · commit ae8dd1906d9a · 2018-04-09T01:05:25.000+08:00
diff --git a/build.lua b/build.lua
@@ -22,6 +22,9 @@ unpackexe   = "xetex"
 
 -- cmdchkfiles = {"*.dtx"}
 
+local insert = table.insert
+local sort   = table.sort
+
 function modified_check(names)
   local errorlevel = 0
   if testfiledir ~= "" and direxists(testfiledir) then
