UCHARAT
class = UCHARAT(regparse-2)+1;
classend = UCHARAT(regparse);
if (UCHARAT(prog->program) != MAGIC) {
if ((!isalnum(UCHARAT(reginput))) && *reginput != '_')
(isalnum(UCHARAT(reginput - 1))
if (isalnum(UCHARAT(reginput)) || *reginput == '_')
if (UCHARAT(prog->program) != MAGIC) {