Add some commands

filters/command_dispatcher.py

@@ -74,6 +74,8 @@ def _dispatch_command(ctx_msg):
             # Starting a new command, so remove any previous command session
             interactive.remove_session(source)
 
+        command[0] = command[0].lower()
+        ctx_msg['command'] = command[0]
         cmdhub.call(command[0], command[1], ctx_msg)
     except SkipException:
         # Skip this message

filters/how_to_use.py

@@ -0,0 +1,15 @@
+from filter import add_filter
+from commands import core
+
+
+def _print_help_message(ctx_msg):
+    a = ['help', '怎么用', '怎么用啊', '你好', '你好啊', '帮助',
+         '用法', '使用帮助', '使用指南', '使用说明', '使用方法',
+         '你能做什么', '你能做些什么', '你会做什么', '你会做些什么']
+    if ctx_msg.get('content', '') in a:
+        core.help('', ctx_msg)
+        return False
+    return True
+
+
+add_filter(_print_help_message, priority=1)