SYNOPSIS
        #include <sys/driver_hooks.h>

        set_driver_hook(H_COMMAND, value)

        <value> being:

          int <closure>(string command, object command_giver)
          int <name>(string command, object command_giver)

DESCRIPTION
        Optional hook to parse and execute commands. If this hook is
        used, it bypasses the normal command parsing done by the
        driver (including the MODIFY_COMMAND and NOTIFY_FAIL hooks).

        The hook is called with two parameters: the command received
        from the living (interactive user or NPC), and the living
        object (the 'command giver') itself. The hook has to return
        non-0 if the command was found and executed, and 0 otherwise.

        At the time the hook is called, query_command() returns the
        command string and this_player() returns the living object.
        query_verb() and query_notify_fail() return 0.

        If the hook is a string, it is the name of an lfun in the
        command giver; if the hook is a lambda closure, it is bound to
        the command giver before the call.

HISTORY

SEE ALSO
        hooks(C), modify_command(H), modify_command_fname(H), notify_fail(H),
        send_notify_fail(H)