- * Block is not in a buffer.
- * Take the least recently used buffer
- * and read the desired block into it.
- * If the LRU buffer has data in it,
- * and autobuf is true, and input is a pipe,
- * then try to allocate a new buffer first.
+ * Block is not in a buffer. Take the least recently used buffer
+ * and read the desired block into it. If the LRU buffer has data
+ * in it, and input is a pipe, then try to allocate a new buffer first.