51 	struct source		*readstack;  member
254 	bmachine.readstack = calloc(sizeof(struct source),  in init_bmachine()
256 	if (bmachine.readstack == NULL)  in init_bmachine()
273 	bmachine.readstack[0] = *src;  in reset_bmachine()
279 	struct source *src = &bmachine.readstack[bmachine.readsp];  in readch()
287 	struct source *src = &bmachine.readstack[bmachine.readsp];  in unreadch()
295 	struct source *src = &bmachine.readstack[bmachine.readsp];  in readline()
303 	struct source *src = &bmachine.readstack[bmachine.readsp];  in src_free()
928 	push_string(read_string(&bmachine.readstack[bmachine.readsp]));  in push_line()
1639 			free(read_string(&bmachine.readstack[bmachine.readsp]));  in skip_until_mark()
1667 	push_number(readnumber(&bmachine.readstack[bmachine.readsp],  in parse_number()
1674 	int ch = bmachine.readstack[bmachine.readsp].lastchar;  in unknown()
1688 			src_setstring(&bmachine.readstack[bmachine.readsp], p);  in eval_string()
1696 		stack = realloc(bmachine.readstack, newsz *  in eval_string()
1701 		bmachine.readstack = stack;  in eval_string()
1703 	src_setstring(&bmachine.readstack[++bmachine.readsp], p);  in eval_string()