void nungetc(int c)
{
if (c != 'C' - '@' && c != 'M' - '@') {
chmac();
ungot = 1;
ungotc = c;
}
}
/* Push c1 and c2 back to the input buffer so that c1 will be processed first.
*/
void nungetc2(int c1, int c2) {
chmac(); /* what does this do? */
ungot = 2;
ungotc2 = c1;
ungotc = c2;
}