48 	while (((c = gch()) != 0) && c != '\n') {  in getl()
412 		if (digit((dd = gch())) ||  in usescape()
429 				dd = gch();  in usescape()
439 		while ('0' <= (d = gch()) && d <= '7') {  in usescape()
497 	while (c = gch()) {  in cpycom()
500 			if ((c = gch()) == '/') {  in cpycom()
501 				while ((c = gch()) == ' ' || c == '\t')  in cpycom()
537 		c = gch();  in cpyact()
543 					(void) gch(); /* eat up an extra '|' */  in cpyact()
568 			c = gch();  in cpyact()
573 			while (c = gch()) {  in cpyact()
576 					if ((c = gch()) == '/') {  in cpyact()
578 						while ((c = gch()) == ' ' ||  in cpyact()
594 			while (c = gch()) {  in cpyact()
597 					c = gch();  in cpyact()
634 gch(void)  in gch()  function