Update help.h generator script to output man-style argument list

src/help.h

@@ -53,701 +53,587 @@ struct command_help {
   command_group_type_t group;
   char *since;
 } command_help[] = {
-    { "APPEND"
-  , "key value"
-  , "Append a value to a key"
-  , COMMAND_GROUP_STRING
-  , "1.3.3" }
+  { "APPEND",
+    "key value",
+    "Append a value to a key",
+    COMMAND_GROUP_STRING,
+    "1.3.3" }
+,  { "AUTH",
+    "password",
+    "Authenticate to the server",
+    COMMAND_GROUP_CONNECTION,
+    "0.08" }
+,  { "BGREWRITEAOF",
+    "-",
+    "Asynchronously rewrite the append-only file",
+    COMMAND_GROUP_SERVER,
+    "1.07" }
+,  { "BGSAVE",
+    "-",
+    "Asynchronously save the dataset to disk",
+    COMMAND_GROUP_SERVER,
+    "0.07" }
+,  { "BLPOP",
+    "key [key ...] timeout",
+    "Remove and get the first element in a list, or block until one is available",
+    COMMAND_GROUP_LIST,
+    "1.3.1" }
+,  { "BRPOP",
+    "key [key ...] timeout",
+    "Remove and get the last element in a list, or block until one is available",
+    COMMAND_GROUP_LIST,
+    "1.3.1" }
+,  { "CONFIG GET",
+    "parameter",
+    "Get the value of a configuration parameter",
+    COMMAND_GROUP_SERVER,
+    "2.0" }
+,  { "CONFIG SET",
+    "parameter value",
+    "Set a configuration parameter to the given value",
+    COMMAND_GROUP_SERVER,
+    "2.0" }
+,  { "DBSIZE",
+    "-",
+    "Return the number of keys in the selected database",
+    COMMAND_GROUP_SERVER,
+    "0.07" }
+,  { "DEBUG OBJECT",
+    "key",
+    "Get debugging information about a key",
+    COMMAND_GROUP_SERVER,
+    "0.101" }
+,  { "DEBUG SEGFAULT",
+    "-",
+    "Make the server crash",
+    COMMAND_GROUP_SERVER,
+    "0.101" }
+,  { "DECR",
+    "key decrement",
+    "Decrement the integer value of a key by one",
+    COMMAND_GROUP_STRING,
+    "0.07" }
+,  { "DECRBY",
+    "key decrement",
+    "Decrement the integer value of a key by the given number",
+    COMMAND_GROUP_STRING,
+    "0.07" }
+,  { "DEL",
+    "key [key ...]",
+    "Delete a key",
+    COMMAND_GROUP_GENERIC,
+    "0.07" }
+,  { "DISCARD",
+    "-",
+    "Discard all commands issued after MULTI",
+    COMMAND_GROUP_TRANSACTIONS,
+    "1.3.3" }
+,  { "ECHO",
+    "message",
+    "Echo the given string",
+    COMMAND_GROUP_CONNECTION,
+    "0.07" }
+,  { "EXEC",
+    "-",
+    "Execute all commands issued after MULTI",
+    COMMAND_GROUP_TRANSACTIONS,
+    "1.1.95" }
+,  { "EXISTS",
+    "key",
+    "Determine if a key exists",
+    COMMAND_GROUP_SERVER,
+    "0.07" }
+,  { "EXPIRE",
+    "key seconds",
+    "Set a key's time to live in seconds",
+    COMMAND_GROUP_GENERIC,
+    "0.09" }
+,  { "EXPIREAT",
+    "key timestamp",
+    "Set the expiration for a key as a UNIX timestamp",
+    COMMAND_GROUP_GENERIC,
+    "1.1" }
+,  { "FLUSHALL",
+    "-",
+    "Remove all keys from all databases",
+    COMMAND_GROUP_SERVER,
+    "0.07" }
+,  { "FLUSHDB",
+    "-",
+    "Remove all keys from the current database",
+    COMMAND_GROUP_SERVER,
+    "0.07" }
+,  { "GET",
+    "key",
+    "Get the value of a key",
+    COMMAND_GROUP_STRING,
+    "0.07" }
+,  { "GETSET",
+    "key value",
+    "Set the string value of a key and return its old value",
+    COMMAND_GROUP_STRING,
+    "0.091" }
+,  { "HDEL",
+    "key field",
+    "Delete a hash field",
+    COMMAND_GROUP_HASH,
+    "1.3.10" }
+,  { "HEXISTS",
+    "key field",
+    "Determine if a hash field exists",
+    COMMAND_GROUP_HASH,
+    "1.3.10" }
+,  { "HGET",
+    "key field",
+    "Get the value of a hash field",
+    COMMAND_GROUP_HASH,
+    "1.3.10" }
+,  { "HGETALL",
+    "key",
+    "Get all the fields and values in a hash",
+    COMMAND_GROUP_HASH,
+    "1.3.10" }
+,  { "HINCRBY",
+    "key field increment",
+    "Increment the integer value of a hash field by the given number",
+    COMMAND_GROUP_HASH,
+    "1.3.10" }
+,  { "HKEYS",
+    "key",
+    "Get all the fields in a hash",
+    COMMAND_GROUP_HASH,
+    "1.3.10" }
+,  { "HLEN",
+    "key",
+    "Get the number of fields in a hash",
+    COMMAND_GROUP_HASH,
+    "1.3.10" }
+,  { "HMGET",
+    "key field [field ...]",
+    "Get the values of all the given hash fields",
+    COMMAND_GROUP_HASH,
+    "1.3.10" }
+,  { "HMSET",
+    "key field value [field value ...]",
+    "Set multiple hash fields to multiple values",
+    COMMAND_GROUP_HASH,
+    "1.3.8" }
+,  { "HSET",
+    "key field value",
+    "Set the string value of a hash field",
+    COMMAND_GROUP_HASH,
+    "1.3.10" }
+,  { "HSETNX",
+    "key field value",
+    "Set the value of a hash field, only if the field does not exist",
+    COMMAND_GROUP_HASH,
+    "1.3.8" }
+,  { "HVALS",
+    "key",
+    "Get all the values in a hash",
+    COMMAND_GROUP_HASH,
+    "1.3.10" }
+,  { "INCR",
+    "key",
+    "Increment the integer value of a key by one",
+    COMMAND_GROUP_STRING,
+    "0.07" }
+,  { "INCRBY",
+    "key increment",
+    "Increment the integer value of a key by the given number",
+    COMMAND_GROUP_STRING,
+    "0.07" }
+,  { "INFO",
+    "-",
+    "Get information and statistics about the server",
+    COMMAND_GROUP_SERVER,
+    "0.07" }
+,  { "KEYS",
+    "pattern",
+    "Find all keys matching the given pattern",
+    COMMAND_GROUP_GENERIC,
+    "0.07" }
+,  { "LASTSAVE",
+    "-",
+    "Get the UNIX time stamp of the last successful save to disk",
+    COMMAND_GROUP_SERVER,
+    "0.07" }
+,  { "LINDEX",
+    "key index",
+    "Get an element from a list by its index",
+    COMMAND_GROUP_LIST,
+    "0.07" }
+,  { "LINSERT",
+    "key BEFORE|AFTER pivot value",
+    "Insert an element before or after another element in a list",
+    COMMAND_GROUP_LIST,
+    "2.1.1" }
+,  { "LLEN",
+    "key",
+    "Get the length of a list",
+    COMMAND_GROUP_LIST,
+    "0.07" }
+,  { "LPOP",
+    "key",
+    "Remove and get the first element in a list",
+    COMMAND_GROUP_LIST,
+    "0.07" }
+,  { "LPUSH",
+    "key value",
+    "Prepend a value to a list",
+    COMMAND_GROUP_LIST,
+    "0.07" }
+,  { "LPUSHX",
+    "key value",
+    "Prepend a value to a list, only if the list exists",
+    COMMAND_GROUP_LIST,
+    "2.1.1" }
+,  { "LRANGE",
+    "key start stop",
+    "Get a range of elements from a list",
+    COMMAND_GROUP_LIST,
+    "0.07" }
+,  { "LREM",
+    "key count value",
+    "Remove elements from a list",
+    COMMAND_GROUP_LIST,
+    "0.07" }
+,  { "LSET",
+    "key index value",
+    "Set the value of an element in a list by its index",
+    COMMAND_GROUP_LIST,
+    "0.07" }
+,  { "LTRIM",
+    "key start stop",
+    "Trim a list to the specified range",
+    COMMAND_GROUP_LIST,
+    "0.07" }
+,  { "MGET",
+    "key [key ...]",
+    "Get the values of all the given keys",
+    COMMAND_GROUP_STRING,
+    "0.07" }
+,  { "MONITOR",
+    "-",
+    "Listen for all requests received by the server in real time",
+    COMMAND_GROUP_SERVER,
+    "0.07" }
+,  { "MOVE",
+    "key db",
+    "Move a key to another database",
+    COMMAND_GROUP_GENERIC,
+    "0.07" }
+,  { "MSET",
+    "key value [key value ...]",
+    "Set multiple keys to multiple values",
+    COMMAND_GROUP_STRING,
+    "1.001" }
+,  { "MSETNX",
+    "key value [key value ...]",
+    "Set multiple keys to multiple values, only if none of the keys exist",
+    COMMAND_GROUP_STRING,
+    "1.001" }
+,  { "MULTI",
+    "-",
+    "Mark the start of a transaction block",
+    COMMAND_GROUP_TRANSACTIONS,
+    "1.1.95" }
+,  { "PERSIST",
+    "key",
+    "Remove the expiration from a key",
+    COMMAND_GROUP_GENERIC,
+    "2.1.2" }
+,  { "PING",
+    "-",
+    "Ping the server",
+    COMMAND_GROUP_CONNECTION,
+    "0.07" }
+,  { "PSUBSCRIBE",
+    "pattern",
+    "Listen for messages published to channels matching the given patterns",
+    COMMAND_GROUP_PUBSUB,
+    "1.3.8" }
+,  { "PUBLISH",
+    "channel message",
+    "Post a message to a channel",
+    COMMAND_GROUP_PUBSUB,
+    "1.3.8" }
+,  { "PUNSUBSCRIBE",
+    "[pattern [pattern ...]]",
+    "Stop listening for messages posted to channels matching the given patterns",
+    COMMAND_GROUP_PUBSUB,
+    "1.3.8" }
+,  { "QUIT",
+    "-",
+    "Close the connection",
+    COMMAND_GROUP_CONNECTION,
+    "0.07" }
+,  { "RANDOMKEY",
+    "-",
+    "Return a random key from the keyspace",
+    COMMAND_GROUP_GENERIC,
+    "0.07" }
+,  { "RENAME",
+    "old new",
+    "Rename a key",
+    COMMAND_GROUP_GENERIC,
+    "0.07" }
+,  { "RENAMENX",
+    "old new",
+    "Rename a key, only if the new key does not exist",
+    COMMAND_GROUP_GENERIC,
+    "0.07" }
+,  { "RPOP",
+    "key",
+    "Remove and get the last element in a list",
+    COMMAND_GROUP_LIST,
+    "0.07" }
+,  { "RPOPLPUSH",
+    "source destination",
+    "Remove the last element in a list, append it to another list and return it",
+    COMMAND_GROUP_LIST,
+    "1.1" }
+,  { "RPUSH",
+    "key value",
+    "Append a value to a list",
+    COMMAND_GROUP_LIST,
+    "0.07" }
+,  { "RPUSHX",
+    "key value",
+    "Append a value to a list, only if the list exists",
+    COMMAND_GROUP_LIST,
+    "2.1.1" }
+,  { "SADD",
+    "key member",
+    "Add a member to a set",
+    COMMAND_GROUP_SET,
+    "0.07" }
+,  { "SAVE",
+    "-",
+    "Synchronously save the dataset to disk",
+    COMMAND_GROUP_SERVER,
+    "0.07" }
+,  { "SCARD",
+    "key",
+    "Get the number of members in a set",
+    COMMAND_GROUP_SET,
+    "0.07" }
+,  { "SDIFF",
+    "key [key ...]",
+    "Subtract multiple sets",
+    COMMAND_GROUP_SET,
+    "0.100" }
+,  { "SDIFFSTORE",
+    "destination key [key ...]",
+    "Subtract multiple sets and store the resulting set in a key",
+    COMMAND_GROUP_SET,
+    "0.100" }
+,  { "SELECT",
+    "index",
+    "Change the selected database for the current connection",
+    COMMAND_GROUP_CONNECTION,
+    "0.07" }
+,  { "SET",
+    "key value",
+    "Set the string value of a key",
+    COMMAND_GROUP_STRING,
+    "0.07" }
+,  { "SETEX",
+    "key timestamp value",
+    "Set the value and expiration of a key",
+    COMMAND_GROUP_STRING,
+    "1.3.10" }
+,  { "SETNX",
+    "key value",
+    "Set the value of a key, only if the key does not exist",
+    COMMAND_GROUP_STRING,
+    "0.07" }
+,  { "SHUTDOWN",
+    "-",
+    "Synchronously save the dataset to disk and then shut down the server",
+    COMMAND_GROUP_SERVER,
+    "0.07" }
+,  { "SINTER",
+    "key [key ...]",
+    "Intersect multiple sets",
+    COMMAND_GROUP_SET,
+    "0.07" }
+,  { "SINTERSTORE",
+    "destination key [key ...]",
+    "Intersect multiple sets and store the resulting set in a key",
+    COMMAND_GROUP_SET,
+    "0.07" }
+,  { "SISMEMBER",
+    "key member",
+    "Determine if a given value is a member of a set",
+    COMMAND_GROUP_SET,
+    "0.07" }
+,  { "SLAVEOF",
+    "host port",
+    "Make the server a slave of another instance, or promote it as master",
+    COMMAND_GROUP_SERVER,
+    "0.100" }
+,  { "SMEMBERS",
+    "key",
+    "Get all the members in a set",
+    COMMAND_GROUP_SET,
+    "0.07" }
+,  { "SMOVE",
+    "source destination member",
+    "Move a member from one set to another",
+    COMMAND_GROUP_SET,
+    "0.091" }
+,  { "SORT",
+    "key [BY pattern] [LIMIT start count] [GET pattern [GET pattern ...]] [ASC|DESC] [ALPHA] [STORE destination]",
+    "Sort the elements in a list, set or sorted set",
+    COMMAND_GROUP_GENERIC,
+    "0.07" }
+,  { "SPOP",
+    "key",
+    "Remove and return a random member from a set",
+    COMMAND_GROUP_SET,
+    "0.101" }
+,  { "SRANDMEMBER",
+    "key",
+    "Get a random member from a set",
+    COMMAND_GROUP_SET,
+    "1.001" }
+,  { "SREM",
+    "key member",
+    "Remove a member from a set",
+    COMMAND_GROUP_SET,
+    "0.07" }
+,  { "STRLEN",
+    "key",
+    "Get the length of the value stored in a key",
+    COMMAND_GROUP_STRING,
+    "2.1.2" }
+,  { "SUBSCRIBE",
+    "channel",
+    "Listen for messages published to the given channels",
+    COMMAND_GROUP_PUBSUB,
+    "1.3.8" }
+,  { "SUBSTR",
+    "key start stop",
+    "Get a substring of the string stored at a key",
+    COMMAND_GROUP_STRING,
+    "1.3.4" }
+,  { "SUNION",
+    "key [key ...]",
+    "Add multiple sets",
+    COMMAND_GROUP_SET,
+    "0.091" }
+,  { "SUNIONSTORE",
+    "destination key [key ...]",
+    "Add multiple sets and store the resulting set in a key",
+    COMMAND_GROUP_SET,
+    "0.091" }
+,  { "SYNC",
+    "-",
+    "Internal command used for replication",
+    COMMAND_GROUP_SERVER,
+    "0.07" }
+,  { "TTL",
+    "key",
+    "Get the time to live for a key",
+    COMMAND_GROUP_GENERIC,
+    "0.100" }
+,  { "TYPE",
+    "key",
+    "Determine the type stored at key",
+    COMMAND_GROUP_GENERIC,
+    "0.07" }
+,  { "UNSUBSCRIBE",
+    "[channel [channel ...]]",
+    "Stop listening for messages posted to the given channels",
+    COMMAND_GROUP_PUBSUB,
+    "1.3.8" }
+,  { "UNWATCH",
+    "-",
+    "Forget about all watched keys",
+    COMMAND_GROUP_TRANSACTIONS,
+    "2.1.0" }
+,  { "WATCH",
+    "key [key ...]",
+    "Watch the given keys to determine execution of the MULTI/EXEC block",
+    COMMAND_GROUP_TRANSACTIONS,
+    "2.1.0" }
+,  { "ZADD",
+    "key score member",
+    "Add a member to a sorted set, or update its score if it already exists",
+    COMMAND_GROUP_SORTED_SET,
+    "1.1" }
+,  { "ZCARD",
+    "key",
+    "Get the number of members in a sorted set",
+    COMMAND_GROUP_SORTED_SET,
+    "1.1" }
+,  { "ZCOUNT",
+    "key min max",
+    "Count the members in a sorted set with scores within the given values",
+    COMMAND_GROUP_SORTED_SET,
+    "1.3.3" }
+,  { "ZINCRBY",
+    "key increment member",
+    "Increment the score of a member in a sorted set",
+    COMMAND_GROUP_SORTED_SET,
+    "1.1" }
+,  { "ZINTERSTORE",
+    "destination key [key ...] [WEIGHTS weight] [AGGREGATE SUM|MIN|MAX]",
+    "Intersect multiple sorted sets and store the resulting sorted set in a new key",
+    COMMAND_GROUP_SORTED_SET,
+    "1.3.10" }
+,  { "ZRANGE",
+    "key start stop",
+    "Return a range of members in a sorted set, by index",
+    COMMAND_GROUP_SORTED_SET,
+    "1.1" }
+,  { "ZRANGEBYSCORE",
+    "key min max",
+    "Return a range of members in a sorted set, by score",
+    COMMAND_GROUP_SORTED_SET,
+    "1.050" }
+,  { "ZRANK",
+    "key member",
+    "Determine the index of a member in a sorted set",
+    COMMAND_GROUP_SORTED_SET,
+    "1.3.4" }
+,  { "ZREM",
+    "key member",
+    "Remove a member from a sorted set",
+    COMMAND_GROUP_SORTED_SET,
+    "1.1" }
+,  { "ZREMRANGEBYRANK",
+    "key start stop",
+    "Remove all members in a sorted set within the given indexes",
+    COMMAND_GROUP_SORTED_SET,
+    "1.3.4" }
+,  { "ZREMRANGEBYSCORE",
+    "key min max",
+    "Remove all members in a sorted set within the given scores",
+    COMMAND_GROUP_SORTED_SET,
+    "1.1" }
+,  { "ZREVRANGE",
+    "key start stop",
+    "Return a range of members in a sorted set, by index, with scores ordered from high to low",
+    COMMAND_GROUP_SORTED_SET,
+    "1.1" }
+,  { "ZREVRANK",
+    "key member",
+    "Determine the index of a member in a sorted set, with scores ordered from high to low",
+    COMMAND_GROUP_SORTED_SET,
+    "1.3.4" }
+,  { "ZSCORE",
+    "key member",
+    "Get the score associated with the given member in a sorted set",
+    COMMAND_GROUP_SORTED_SET,
+    "1.1" }
+,  { "ZUNIONSTORE",
+    "destination key [key ...] [WEIGHTS weight] [AGGREGATE SUM|MIN|MAX]",
+    "Add multiple sorted sets and store the resulting sorted set in a new key",
+    COMMAND_GROUP_SORTED_SET,
+    "1.3.10" }
 
-  , { "AUTH"
-  , "password"
-  , "Authenticate to the server"
-  , COMMAND_GROUP_CONNECTION
-  , "0.08" }
-
-  , { "BGREWRITEAOF"
-  , "-"
-  , "Asynchronously rewrite the append-only file"
-  , COMMAND_GROUP_SERVER
-  , "1.07" }
-
-  , { "BGSAVE"
-  , "-"
-  , "Asynchronously save the dataset to disk"
-  , COMMAND_GROUP_SERVER
-  , "0.07" }
-
-  , { "BLPOP"
-  , "(key)+ timeout"
-  , "Remove and get the first element in a list, or block until one is available"
-  , COMMAND_GROUP_LIST
-  , "1.3.1" }
-
-  , { "BRPOP"
-  , "(key)+ timeout"
-  , "Remove and get the last element in a list, or block until one is available"
-  , COMMAND_GROUP_LIST
-  , "1.3.1" }
-
-  , { "CONFIG GET"
-  , "parameter"
-  , "Get the value of a configuration parameter"
-  , COMMAND_GROUP_SERVER
-  , "2.0" }
-
-  , { "CONFIG SET"
-  , "parameter value"
-  , "Set a configuration parameter to the given value"
-  , COMMAND_GROUP_SERVER
-  , "2.0" }
-
-  , { "DBSIZE"
-  , "-"
-  , "Return the number of keys in the selected database"
-  , COMMAND_GROUP_SERVER
-  , "0.07" }
-
-  , { "DEBUG OBJECT"
-  , "key"
-  , "Get debugging information about a key"
-  , COMMAND_GROUP_SERVER
-  , "0.101" }
-
-  , { "DEBUG SEGFAULT"
-  , "-"
-  , "Make the server crash"
-  , COMMAND_GROUP_SERVER
-  , "0.101" }
-
-  , { "DECR"
-  , "key decrement"
-  , "Decrement the integer value of a key by one"
-  , COMMAND_GROUP_STRING
-  , "0.07" }
-
-  , { "DECRBY"
-  , "key decrement"
-  , "Decrement the integer value of a key by the given number"
-  , COMMAND_GROUP_STRING
-  , "0.07" }
-
-  , { "DEL"
-  , "(key)+"
-  , "Delete a key"
-  , COMMAND_GROUP_GENERIC
-  , "0.07" }
-
-  , { "DISCARD"
-  , "-"
-  , "Discard all commands issued after MULTI"
-  , COMMAND_GROUP_TRANSACTIONS
-  , "1.3.3" }
-
-  , { "ECHO"
-  , "message"
-  , "Echo the given string"
-  , COMMAND_GROUP_CONNECTION
-  , "0.07" }
-
-  , { "EXEC"
-  , "-"
-  , "Execute all commands issued after MULTI"
-  , COMMAND_GROUP_TRANSACTIONS
-  , "1.1.95" }
-
-  , { "EXISTS"
-  , "key"
-  , "Determine if a key exists"
-  , COMMAND_GROUP_SERVER
-  , "0.07" }
-
-  , { "EXPIRE"
-  , "key seconds"
-  , "Set a key's time to live in seconds"
-  , COMMAND_GROUP_GENERIC
-  , "0.09" }
-
-  , { "EXPIREAT"
-  , "key timestamp"
-  , "Set the expiration for a key as a UNIX timestamp"
-  , COMMAND_GROUP_GENERIC
-  , "1.1" }
-
-  , { "FLUSHALL"
-  , "-"
-  , "Remove all keys from all databases"
-  , COMMAND_GROUP_SERVER
-  , "0.07" }
-
-  , { "FLUSHDB"
-  , "-"
-  , "Remove all keys from the current database"
-  , COMMAND_GROUP_SERVER
-  , "0.07" }
-
-  , { "GET"
-  , "key"
-  , "Get the value of a key"
-  , COMMAND_GROUP_STRING
-  , "0.07" }
-
-  , { "GETSET"
-  , "key value"
-  , "Set the string value of a key and return its old value"
-  , COMMAND_GROUP_STRING
-  , "0.091" }
-
-  , { "HDEL"
-  , "key field"
-  , "Delete a hash field"
-  , COMMAND_GROUP_HASH
-  , "1.3.10" }
-
-  , { "HEXISTS"
-  , "key field"
-  , "Determine if a hash field exists"
-  , COMMAND_GROUP_HASH
-  , "1.3.10" }
-
-  , { "HGET"
-  , "key field"
-  , "Get the value of a hash field"
-  , COMMAND_GROUP_HASH
-  , "1.3.10" }
-
-  , { "HGETALL"
-  , "key"
-  , "Get all the fields and values in a hash"
-  , COMMAND_GROUP_HASH
-  , "1.3.10" }
-
-  , { "HINCRBY"
-  , "key field increment"
-  , "Increment the integer value of a hash field by the given number"
-  , COMMAND_GROUP_HASH
-  , "1.3.10" }
-
-  , { "HKEYS"
-  , "key"
-  , "Get all the fields in a hash"
-  , COMMAND_GROUP_HASH
-  , "1.3.10" }
-
-  , { "HLEN"
-  , "key"
-  , "Get the number of fields in a hash"
-  , COMMAND_GROUP_HASH
-  , "1.3.10" }
-
-  , { "HMGET"
-  , "key (field)+"
-  , "Get the values of all the given hash fields"
-  , COMMAND_GROUP_HASH
-  , "1.3.10" }
-
-  , { "HMSET"
-  , "key (field value)+"
-  , "Set multiple hash fields to multiple values"
-  , COMMAND_GROUP_HASH
-  , "1.3.8" }
-
-  , { "HSET"
-  , "key field value"
-  , "Set the string value of a hash field"
-  , COMMAND_GROUP_HASH
-  , "1.3.10" }
-
-  , { "HSETNX"
-  , "key field value"
-  , "Set the value of a hash field, only if the field does not exist"
-  , COMMAND_GROUP_HASH
-  , "1.3.8" }
-
-  , { "HVALS"
-  , "key"
-  , "Get all the values in a hash"
-  , COMMAND_GROUP_HASH
-  , "1.3.10" }
-
-  , { "INCR"
-  , "key"
-  , "Increment the integer value of a key by one"
-  , COMMAND_GROUP_STRING
-  , "0.07" }
-
-  , { "INCRBY"
-  , "key increment"
-  , "Increment the integer value of a key by the given number"
-  , COMMAND_GROUP_STRING
-  , "0.07" }
-
-  , { "INFO"
-  , "-"
-  , "Get information and statistics about the server"
-  , COMMAND_GROUP_SERVER
-  , "0.07" }
-
-  , { "KEYS"
-  , "pattern"
-  , "Find all keys matching the given pattern"
-  , COMMAND_GROUP_GENERIC
-  , "0.07" }
-
-  , { "LASTSAVE"
-  , "-"
-  , "Get the UNIX time stamp of the last successful save to disk"
-  , COMMAND_GROUP_SERVER
-  , "0.07" }
-
-  , { "LINDEX"
-  , "key index"
-  , "Get an element from a list by its index"
-  , COMMAND_GROUP_LIST
-  , "0.07" }
-
-  , { "LINSERT"
-  , "key BEFORE|AFTER pivot value"
-  , "Insert an element before or after another element in a list"
-  , COMMAND_GROUP_LIST
-  , "2.1.1" }
-
-  , { "LLEN"
-  , "key"
-  , "Get the length of a list"
-  , COMMAND_GROUP_LIST
-  , "0.07" }
-
-  , { "LPOP"
-  , "key"
-  , "Remove and get the first element in a list"
-  , COMMAND_GROUP_LIST
-  , "0.07" }
-
-  , { "LPUSH"
-  , "key value"
-  , "Prepend a value to a list"
-  , COMMAND_GROUP_LIST
-  , "0.07" }
-
-  , { "LPUSHX"
-  , "key value"
-  , "Prepend a value to a list, only if the list exists"
-  , COMMAND_GROUP_LIST
-  , "2.1.1" }
-
-  , { "LRANGE"
-  , "key start stop"
-  , "Get a range of elements from a list"
-  , COMMAND_GROUP_LIST
-  , "0.07" }
-
-  , { "LREM"
-  , "key count value"
-  , "Remove elements from a list"
-  , COMMAND_GROUP_LIST
-  , "0.07" }
-
-  , { "LSET"
-  , "key index value"
-  , "Set the value of an element in a list by its index"
-  , COMMAND_GROUP_LIST
-  , "0.07" }
-
-  , { "LTRIM"
-  , "key start stop"
-  , "Trim a list to the specified range"
-  , COMMAND_GROUP_LIST
-  , "0.07" }
-
-  , { "MGET"
-  , "(key)+"
-  , "Get the values of all the given keys"
-  , COMMAND_GROUP_STRING
-  , "0.07" }
-
-  , { "MONITOR"
-  , "-"
-  , "Listen for all requests received by the server in real time"
-  , COMMAND_GROUP_SERVER
-  , "0.07" }
-
-  , { "MOVE"
-  , "key db"
-  , "Move a key to another database"
-  , COMMAND_GROUP_GENERIC
-  , "0.07" }
-
-  , { "MSET"
-  , "(key value)+"
-  , "Set multiple keys to multiple values"
-  , COMMAND_GROUP_STRING
-  , "1.001" }
-
-  , { "MSETNX"
-  , "(key value)+"
-  , "Set multiple keys to multiple values, only if none of the keys exist"
-  , COMMAND_GROUP_STRING
-  , "1.001" }
-
-  , { "MULTI"
-  , "-"
-  , "Mark the start of a transaction block"
-  , COMMAND_GROUP_TRANSACTIONS
-  , "1.1.95" }
-
-  , { "PERSIST"
-  , "key"
-  , "Remove the expiration from a key"
-  , COMMAND_GROUP_GENERIC
-  , "2.1.2" }
-
-  , { "PING"
-  , "-"
-  , "Ping the server"
-  , COMMAND_GROUP_CONNECTION
-  , "0.07" }
-
-  , { "PSUBSCRIBE"
-  , "pattern"
-  , "Listen for messages published to channels matching the given patterns"
-  , COMMAND_GROUP_PUBSUB
-  , "1.3.8" }
-
-  , { "PUBLISH"
-  , "channel message"
-  , "Post a message to a channel"
-  , COMMAND_GROUP_PUBSUB
-  , "1.3.8" }
-
-  , { "PUNSUBSCRIBE"
-  , "(pattern)*"
-  , "Stop listening for messages posted to channels matching the given patterns"
-  , COMMAND_GROUP_PUBSUB
-  , "1.3.8" }
-
-  , { "QUIT"
-  , "-"
-  , "Close the connection"
-  , COMMAND_GROUP_CONNECTION
-  , "0.07" }
-
-  , { "RANDOMKEY"
-  , "-"
-  , "Return a random key from the keyspace"
-  , COMMAND_GROUP_GENERIC
-  , "0.07" }
-
-  , { "RENAME"
-  , "old new"
-  , "Rename a key"
-  , COMMAND_GROUP_GENERIC
-  , "0.07" }
-
-  , { "RENAMENX"
-  , "old new"
-  , "Rename a key, only if the new key does not exist"
-  , COMMAND_GROUP_GENERIC
-  , "0.07" }
-
-  , { "RPOP"
-  , "key"
-  , "Remove and get the last element in a list"
-  , COMMAND_GROUP_LIST
-  , "0.07" }
-
-  , { "RPOPLPUSH"
-  , "source destination"
-  , "Remove the last element in a list, append it to another list and return it"
-  , COMMAND_GROUP_LIST
-  , "1.1" }
-
-  , { "RPUSH"
-  , "key value"
-  , "Append a value to a list"
-  , COMMAND_GROUP_LIST
-  , "0.07" }
-
-  , { "RPUSHX"
-  , "key value"
-  , "Append a value to a list, only if the list exists"
-  , COMMAND_GROUP_LIST
-  , "2.1.1" }
-
-  , { "SADD"
-  , "key member"
-  , "Add a member to a set"
-  , COMMAND_GROUP_SET
-  , "0.07" }
-
-  , { "SAVE"
-  , "-"
-  , "Synchronously save the dataset to disk"
-  , COMMAND_GROUP_SERVER
-  , "0.07" }
-
-  , { "SCARD"
-  , "key"
-  , "Get the number of members in a set"
-  , COMMAND_GROUP_SET
-  , "0.07" }
-
-  , { "SDIFF"
-  , "(key)+"
-  , "Subtract multiple sets"
-  , COMMAND_GROUP_SET
-  , "0.100" }
-
-  , { "SDIFFSTORE"
-  , "destination (key)+"
-  , "Subtract multiple sets and store the resulting set in a key"
-  , COMMAND_GROUP_SET
-  , "0.100" }
-
-  , { "SELECT"
-  , "index"
-  , "Change the selected database for the current connection"
-  , COMMAND_GROUP_CONNECTION
-  , "0.07" }
-
-  , { "SET"
-  , "key value"
-  , "Set the string value of a key"
-  , COMMAND_GROUP_STRING
-  , "0.07" }
-
-  , { "SETEX"
-  , "key timestamp value"
-  , "Set the value and expiration of a key"
-  , COMMAND_GROUP_STRING
-  , "1.3.10" }
-
-  , { "SETNX"
-  , "key value"
-  , "Set the value of a key, only if the key does not exist"
-  , COMMAND_GROUP_STRING
-  , "0.07" }
-
-  , { "SHUTDOWN"
-  , "-"
-  , "Synchronously save the dataset to disk and then shut down the server"
-  , COMMAND_GROUP_SERVER
-  , "0.07" }
-
-  , { "SINTER"
-  , "(key)+"
-  , "Intersect multiple sets"
-  , COMMAND_GROUP_SET
-  , "0.07" }
-
-  , { "SINTERSTORE"
-  , "destination (key)+"
-  , "Intersect multiple sets and store the resulting set in a key"
-  , COMMAND_GROUP_SET
-  , "0.07" }
-
-  , { "SISMEMBER"
-  , "key member"
-  , "Determine if a given value is a member of a set"
-  , COMMAND_GROUP_SET
-  , "0.07" }
-
-  , { "SLAVEOF"
-  , "host port"
-  , "Make the server a slave of another instance, or promote it as master"
-  , COMMAND_GROUP_SERVER
-  , "0.100" }
-
-  , { "SMEMBERS"
-  , "key"
-  , "Get all the members in a set"
-  , COMMAND_GROUP_SET
-  , "0.07" }
-
-  , { "SMOVE"
-  , "source destination member"
-  , "Move a member from one set to another"
-  , COMMAND_GROUP_SET
-  , "0.091" }
-
-  , { "SORT"
-  , "key (BY pattern)? (LIMIT start count)? (GET pattern)* (ASC|DESC)? (ALPHA)? (STORE destination)?"
-  , "Sort the elements in a list, set or sorted set"
-  , COMMAND_GROUP_GENERIC
-  , "0.07" }
-
-  , { "SPOP"
-  , "key"
-  , "Remove and return a random member from a set"
-  , COMMAND_GROUP_SET
-  , "0.101" }
-
-  , { "SRANDMEMBER"
-  , "key"
-  , "Get a random member from a set"
-  , COMMAND_GROUP_SET
-  , "1.001" }
-
-  , { "SREM"
-  , "key member"
-  , "Remove a member from a set"
-  , COMMAND_GROUP_SET
-  , "0.07" }
-
-  , { "STRLEN"
-  , "key"
-  , "Get the length of the value stored in a key"
-  , COMMAND_GROUP_STRING
-  , "2.1.2" }
-
-  , { "SUBSCRIBE"
-  , "channel"
-  , "Listen for messages published to the given channels"
-  , COMMAND_GROUP_PUBSUB
-  , "1.3.8" }
-
-  , { "SUBSTR"
-  , "key start stop"
-  , "Get a substring of the string stored at a key"
-  , COMMAND_GROUP_STRING
-  , "1.3.4" }
-
-  , { "SUNION"
-  , "(key)+"
-  , "Add multiple sets"
-  , COMMAND_GROUP_SET
-  , "0.091" }
-
-  , { "SUNIONSTORE"
-  , "destination (key)+"
-  , "Add multiple sets and store the resulting set in a key"
-  , COMMAND_GROUP_SET
-  , "0.091" }
-
-  , { "SYNC"
-  , "-"
-  , "Internal command used for replication"
-  , COMMAND_GROUP_SERVER
-  , "0.07" }
-
-  , { "TTL"
-  , "key"
-  , "Get the time to live for a key"
-  , COMMAND_GROUP_GENERIC
-  , "0.100" }
-
-  , { "TYPE"
-  , "key"
-  , "Determine the type stored at key"
-  , COMMAND_GROUP_GENERIC
-  , "0.07" }
-
-  , { "UNSUBSCRIBE"
-  , "(channel)*"
-  , "Stop listening for messages posted to the given channels"
-  , COMMAND_GROUP_PUBSUB
-  , "1.3.8" }
-
-  , { "UNWATCH"
-  , "-"
-  , "Forget about all watched keys"
-  , COMMAND_GROUP_TRANSACTIONS
-  , "2.1.0" }
-
-  , { "WATCH"
-  , "(key)+"
-  , "Watch the given keys to determine execution of the MULTI/EXEC block"
-  , COMMAND_GROUP_TRANSACTIONS
-  , "2.1.0" }
-
-  , { "ZADD"
-  , "key score member"
-  , "Add a member to a sorted set, or update its score if it already exists"
-  , COMMAND_GROUP_SORTED_SET
-  , "1.1" }
-
-  , { "ZCARD"
-  , "key"
-  , "Get the number of members in a sorted set"
-  , COMMAND_GROUP_SORTED_SET
-  , "1.1" }
-
-  , { "ZCOUNT"
-  , "key min max"
-  , "Count the members in a sorted set with scores within the given values"
-  , COMMAND_GROUP_SORTED_SET
-  , "1.3.3" }
-
-  , { "ZINCRBY"
-  , "key increment member"
-  , "Increment the score of a member in a sorted set"
-  , COMMAND_GROUP_SORTED_SET
-  , "1.1" }
-
-  , { "ZINTERSTORE"
-  , "destination (key)+ (WEIGHTS weight)? (AGGREGATE SUM|MIN|MAX)?"
-  , "Intersect multiple sorted sets and store the resulting sorted set in a new key"
-  , COMMAND_GROUP_SORTED_SET
-  , "1.3.10" }
-
-  , { "ZRANGE"
-  , "key start stop"
-  , "Return a range of members in a sorted set, by index"
-  , COMMAND_GROUP_SORTED_SET
-  , "1.1" }
-
-  , { "ZRANGEBYSCORE"
-  , "key min max"
-  , "Return a range of members in a sorted set, by score"
-  , COMMAND_GROUP_SORTED_SET
-  , "1.050" }
-
-  , { "ZRANK"
-  , "key member"
-  , "Determine the index of a member in a sorted set"
-  , COMMAND_GROUP_SORTED_SET
-  , "1.3.4" }
-
-  , { "ZREM"
-  , "key member"
-  , "Remove a member from a sorted set"
-  , COMMAND_GROUP_SORTED_SET
-  , "1.1" }
-
-  , { "ZREMRANGEBYRANK"
-  , "key start stop"
-  , "Remove all members in a sorted set within the given indexes"
-  , COMMAND_GROUP_SORTED_SET
-  , "1.3.4" }
-
-  , { "ZREMRANGEBYSCORE"
-  , "key min max"
-  , "Remove all members in a sorted set within the given scores"
-  , COMMAND_GROUP_SORTED_SET
-  , "1.1" }
-
-  , { "ZREVRANGE"
-  , "key start stop"
-  , "Return a range of members in a sorted set, by index, with scores ordered from high to low"
-  , COMMAND_GROUP_SORTED_SET
-  , "1.1" }
-
-  , { "ZREVRANK"
-  , "key member"
-  , "Determine the index of a member in a sorted set, with scores ordered from high to low"
-  , COMMAND_GROUP_SORTED_SET
-  , "1.3.4" }
-
-  , { "ZSCORE"
-  , "key member"
-  , "Get the score associated with the given member in a sorted set"
-  , COMMAND_GROUP_SORTED_SET
-  , "1.1" }
-
-  , { "ZUNIONSTORE"
-  , "destination (key)+ (WEIGHTS weight)? (AGGREGATE SUM|MIN|MAX)?"
-  , "Add multiple sorted sets and store the resulting sorted set in a new key"
-  , COMMAND_GROUP_SORTED_SET
-  , "1.3.10" }
 };
 
 /*

utils/generate-command-help.rb

 #!/usr/bin/env ruby
 
-require 'net/http'
-require 'net/https'
-require 'json'
-require 'uri'
-
-dest = ARGV[0]
-tmpl = File.read './utils/help.h'
-
-url = URI.parse 'https://github.com/antirez/redis-doc/raw/master/commands.json'
-client = Net::HTTP.new url.host, url.port
-client.use_ssl = true
-res = client.get url.path
-
 def argument arg
-  name = arg['name'].is_a?(Array) ? arg['name'].join(' ') : arg['name']
-  name = arg['enum'].join '|' if 'enum' == arg['type']
-  name = arg['command'] + ' ' + name if arg['command']
-  if arg['multiple']
-    name = "(#{name})"
-    name += arg['optional'] ? '*' : '+'
-  elsif arg['optional']
-    name = "(#{name})?"
+  name = arg["name"].is_a?(Array) ? arg["name"].join(" ") : arg["name"]
+  name = arg["enum"].join "|" if "enum" == arg["type"]
+  name = arg["command"] + " " + name if arg["command"]
+  if arg["multiple"]
+    name = "#{name} [#{name} ...]"
+  end
+  if arg["optional"]
+    name = "[#{name}]"
   end
   name
 end
 
 def arguments command
-  return '-' unless command['arguments']
-  command['arguments'].map do |arg|
+  return "-" unless command["arguments"]
+  command["arguments"].map do |arg|
     argument arg
-  end.join ' '
+  end.join " "
+end
+
+def commands
+  return @commands if @commands
+
+  require "net/http"
+  require "net/https"
+  require "json"
+  require "uri"
+
+  url = URI.parse "https://github.com/antirez/redis-doc/raw/master/commands.json"
+  client = Net::HTTP.new url.host, url.port
+  client.use_ssl = true
+  response = client.get url.path
+  if response.is_a?(Net::HTTPSuccess)
+    @commands = JSON.parse(response.body)
+  else
+    response.error!
+  end
 end
 
-case res
-when Net::HTTPSuccess
-  first = true
-  commands = JSON.parse(res.body)
-  c = commands.map do |key, command|
-    buf = if first
-      first = false
-      ' '
-    else
-      "\n  ,"
-    end
-    buf += " { \"#{key}\"\n" +
-    "  , \"#{arguments(command)}\"\n" +
-    "  , \"#{command['summary']}\"\n" +
-    "  , COMMAND_GROUP_#{command['group'].upcase}\n" +
-    "  , \"#{command['since']}\" }"
-  end.join("\n")
-  puts "\n// Auto-generated, do not edit.\n" + tmpl.sub('__COMMANDS__', c)
-else
-  res.error!
-end
\ No newline at end of file
+def generate_commands
+  commands.to_a.sort do |x,y|
+    x[0] <=> y[0]
+  end.map do |key, command|
+    <<-SPEC
+{ "#{key}",
+    "#{arguments(command)}",
+    "#{command["summary"]}",
+    COMMAND_GROUP_#{command["group"].upcase},
+    "#{command["since"]}" }
+    SPEC
+  end.join(",  ")
+end
+
+# Write to stdout
+tmpl = File.read "./utils/help.h"
+puts "\n// Auto-generated, do not edit.\n" + tmpl.sub("__COMMANDS__", generate_commands)
+