CTLQUOTE
else if (c == CTLBACKQ || c == (CTLBACKQ|CTLQUOTE)) {
case CTLBACKQ|CTLQUOTE: {
expbackq(argbackq->n, c & CTLQUOTE, flag);
case CTLBACKQ | CTLQUOTE:
case CTLBACKQ+CTLQUOTE:
STPUTC(CTLBACKQ | CTLQUOTE, out);
case CTLVAR+CTLQUOTE: c = 'V'; goto backslash;
case CTLBACKQ+CTLQUOTE: c = 'Q'; goto backslash;
case CTLBACKQ|CTLQUOTE:
if (!quoted && *p == (CTLBACKQ|CTLQUOTE))