XVECREF_YVECREF_EQUAL  188 lib/diffseq.h    #define XREF_YREF_EQUAL(x,y)  XVECREF_YVECREF_EQUAL (ctxt, x, y)
XVECREF_YVECREF_EQUAL  462 lib/diffseq.h    #define XREF_YREF_EQUAL(x,y)  XVECREF_YVECREF_EQUAL (ctxt, x, y)