Function userfunc_index

crawl-ref/source/macro.cc:118–122

static cmd_to_key_map _cmds_to_keys[KMC_CONTEXT_COUNT];

static inline int userfunc_index(int key)
{
    int index = (key <= USERFUNCBASE ? USERFUNCBASE - key : -1);
    return index < 0 || index >= (int) userfunctions.size()? -1 : index;
}

static int userfunc_index(const keyseq &seq)
{