51 	struct source		*readstack;  member
256 	bmachine.readstack = calloc(sizeof(struct source),  in init_bmachine()
258 	if (bmachine.readstack == NULL)  in init_bmachine()
275 	bmachine.readstack[0] = *src;  in reset_bmachine()
281 	struct source *src = &bmachine.readstack[bmachine.readsp];  in readch()
289 	struct source *src = &bmachine.readstack[bmachine.readsp];  in unreadch()
297 	struct source *src = &bmachine.readstack[bmachine.readsp];  in readline()
305 	struct source *src = &bmachine.readstack[bmachine.readsp];  in src_free()
942 	push_string(read_string(&bmachine.readstack[bmachine.readsp]));  in push_line()
1634 			free(read_string(&bmachine.readstack[bmachine.readsp]));  in skip_until_mark()
1662 	push_number(readnumber(&bmachine.readstack[bmachine.readsp],  in parse_number()
1669 	int ch = bmachine.readstack[bmachine.readsp].lastchar;  in unknown()
1683 			src_setstring(&bmachine.readstack[bmachine.readsp], p);  in eval_string()
1690 		struct source *stack = bmachine.readstack;  in eval_string()
1695 		bmachine.readstack = stack;  in eval_string()
1697 	src_setstring(&bmachine.readstack[++bmachine.readsp], p);  in eval_string()