m->aliases = NULL;
static CHARMAP *charmap_new(void){  int i;  CHARMAP *m = safe_malloc(sizeof(CHARMAP));    m->charset = NULL;  m->escape_char = '\\';  m->comment_char = '#';  m->is_valid = 0;    for(i = 0; i < 256; i++)    m->map[i] = -1;    return m;}