TODO changes and mostly theoretical minor skiplist change

TODO

@@ -3,9 +3,13 @@ VERSION 1.1 TODO
 * For now only the last argument gets integer encoded, so make sure that: 1) every multi bulk commands implemented will have the last arg that is indeed a value, and not used otherwise. 2) to explicitly call the function to encode the object in MSET and other commands where there are multiple "values".
 * Man pages for MSET MSETNX and SRANDMEMBER, Z-commands, ...
 * ZSETs missing stuff: ZINCRBY
+* Add all the missing symbols for the statis functions into the table. This backtrace on segfault is indeed *very* useful.
+* Use strcoll() to compare objects in sorted sets, like it already happens for SORT.
+* LMOVE, as discussed in the Redis group.
 
 VERSION 1.2 TODO
 
+* Basic Redis-cluster (at least all the features of the Ruby client distribute implementation + ability to set every key in M nodes).
 * Hashes (HSET, HGET, HEXISTS, HLEN, ...).
 * An utility able to export an .rdb file into a text-only JSON dump, we can't live anymore without such a tool. Probably an extension to redis-cli.
 

redis.c

@@ -323,7 +323,7 @@ typedef struct zskiplistNode {
 
 typedef struct zskiplist {
     struct zskiplistNode *header, *tail;
-    long length;
+    unsigned long length;
     int level;
 } zskiplist;