42 	struct source		*readstack;  member
247 	bmachine.readstack = calloc(sizeof(struct source),  in init_bmachine()
249 	if (bmachine.readstack == NULL)  in init_bmachine()
266 	bmachine.readstack[0] = *src;  in reset_bmachine()
272 	struct source *src = &bmachine.readstack[bmachine.readsp];  in readch()
280 	struct source *src = &bmachine.readstack[bmachine.readsp];  in unreadch()
288 	struct source *src = &bmachine.readstack[bmachine.readsp];  in readline()
296 	struct source *src = &bmachine.readstack[bmachine.readsp];  in src_free()
947 	push_string(read_string(&bmachine.readstack[bmachine.readsp]));  in push_line()
1652 			free(read_string(&bmachine.readstack[bmachine.readsp]));  in skip_until_mark()
1681 	push_number(readnumber(&bmachine.readstack[bmachine.readsp],  in parse_number()
1688 	int ch = bmachine.readstack[bmachine.readsp].lastchar;  in unknown()
1702 			src_setstring(&bmachine.readstack[bmachine.readsp], p);  in eval_string()
1710 		stack = reallocarray(bmachine.readstack, newsz,  in eval_string()
1715 		bmachine.readstack = stack;  in eval_string()
1717 	src_setstring(&bmachine.readstack[++bmachine.readsp], p);  in eval_string()