refactoring

util/sort.lua

@@ -1,10 +1,10 @@
 module 'sorting'
 
-public.LT = {}
-public.EQ = {}
-public.GT = {}
+public()
 
-function public.compare(a, b, desc)
+LT, EQ, GT = t, t, t
+
+function compare(a, b, desc)
     if a < b then
         return desc and GT or LT
     elseif a > b then
@@ -14,7 +14,7 @@ function public.compare(a, b, desc)
     end
 end
 
-function public.multi_lt(xs, ys)
+function multi_lt(xs, ys)
     local i = 1
     while true do
         if xs[i] and ys[i] and xs[i] ~= ys[i] then