48 	size_t			readsp;  member
277 	bmachine.readsp = 0;  in reset_bmachine()
284 	struct source *src = &bmachine.readstack[bmachine.readsp];  in readch()
292 	struct source *src = &bmachine.readstack[bmachine.readsp];  in unreadch()
300 	struct source *src = &bmachine.readstack[bmachine.readsp];  in readline()
308 	struct source *src = &bmachine.readstack[bmachine.readsp];  in src_free()
933 	push_string(read_string(&bmachine.readstack[bmachine.readsp]));  in push_line()
1561 	if (bmachine.readsp < 2)  in quit()
1564 	bmachine.readsp--;  in quit()
1566 	bmachine.readsp--;  in quit()
1582 	else if (bmachine.readsp < i)  in quitN()
1587 			bmachine.readsp--;  in quitN()
1604 	else if (i > 0 && bmachine.readsp < i)  in skipN()
1609 			bmachine.readsp--;  in skipN()
1644 			free(read_string(&bmachine.readstack[bmachine.readsp]));  in skip_until_mark()
1672 	push_number(readnumber(&bmachine.readstack[bmachine.readsp],  in parse_number()
1679 	int ch = bmachine.readstack[bmachine.readsp].lastchar;  in unknown()
1688 	if (bmachine.readsp > 0) {  in eval_string()
1693 			src_setstring(&bmachine.readstack[bmachine.readsp], p);  in eval_string()
1698 	if (bmachine.readsp == bmachine.readstack_sz - 1) {  in eval_string()
1708 	src_setstring(&bmachine.readstack[++bmachine.readsp], p);  in eval_string()
1743 			if (bmachine.readsp == 0)  in eval()
1746 			bmachine.readsp--;  in eval()
1750 			if (bmachine.readsp > 0) {  in eval()
1752 				bmachine.readsp--;  in eval()
1761 		(void)fprintf(stderr, "%zd =>\n", bmachine.readsp);  in eval()
1772 		(void)fprintf(stderr, "%zd ==\n", bmachine.readsp);  in eval()