Change change change

Change change change

linenoise.c

@@ -474,7 +474,13 @@ void line_set_free_hints_callback(line_free_hints_callback_t *fn)
 }
 
 /* Register a function to perform I/O multiplexing to monitor multiple file
- * descriptor from different input at the same time.
+ * descriptor from different input at the same time, so we can allow the ability
+ * of receiving commands from different input sources and still provides the
+ * command-line auto-complete feature of this package. For example, the main
+ * loop of this package can only deal with standard input file descriptor
+ * originally. When this callback function is invoked, it allows the main loop
+ * of this package to deal with multiple file descriptors from different input
+ * alongside with the origin feature to deal with the standard input.
  */
 void line_set_eventmux_callback(line_eventmux_callback_t *fn)
 {