lftp option -c doesn't exist

Hello,

$ LC_ALL=C lftp --version
LFTP | Version 3.5.10 | Copyright (c) 1996-2006 Alexander V. Lukyanov
$ LC_ALL=C lftp --help
Usage: lftp [OPTS] <site>
`lftp' is the first command executed by lftp after rc files
 -f <file>           execute commands from the file and exit
 -c <cmd>            execute the commands and exit
 --help              print this help and exit
 --version           print lftp version and exit
Other options are the same as in `open' command
 -e <cmd>            execute the command just after selecting
 -u <user>[,<pass>]  use the user/password for authentication
 -p <port>           use the port for connection
 <site>              host name, URL or bookmark name
$ LC_ALL=C lftp -c
lftp: invalid option -- c
Try `lftp --help' for more information

So -c is documented but if you dont give a command it says "invalid
option" but its valid just used wrong.

-- 
Noèl Köthe <noel debian.org>
Debian GNU/Linux, www.debian.org

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