adaptive base54 digits depending on char frequency (WIP)

lib/utils.js

@@ -141,23 +141,6 @@ var MAP = (function(){
     return MAP;
 })();
 
-// XXX: currently this is optimized for jQuery, though I have the
-// feeling it works well in general for many scripts (well, better
-// than alphabetical order).  It would be nice if we could adapt it to
-// the currently running script.
-var BASE54_DIGITS = "etnrisouaflchpdvmgybwESxTNCkLAOM_DPHBjFIqRUzWXV$JKQGYZ0516372984";
-//var BASE54_DIGITS = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$_0123456789";
-
-function base54(num) {
-    var ret = "", base = 54;
-    do {
-        ret += BASE54_DIGITS.charAt(num % base);
-        num = Math.floor(num / base);
-        base = 64;
-    } while (num > 0);
-    return ret;
-};
-
 function push_uniq(array, el) {
     if (array.indexOf(el) < 0)
         array.push(el);