support command aliases in bot help

irc/commands/help.py

@@ -2,6 +2,8 @@
 
 """Generates help information."""
 
+from irc import triggers
+
 connection, data = None, None
 
 def call(c, d):
@@ -22,9 +24,12 @@ def do_command_help():
 
     try:
         exec "from irc.commands import %s as this_command" % command
-    except ImportError:
-        connection.reply(data.chan, data.nick, "command \x0303%s\x0301 not found!" % command)
-        return
+    except ImportError: # if we can't find it directly, this could be an alias for another command
+        try:
+            this_command = triggers.get_alias(command)
+        except KeyError:
+            connection.reply(data.chan, data.nick, "command \x0303%s\x0301 not found!" % command)
+            return
 
     info = this_command.__doc__
 

irc/triggers.py

@@ -4,9 +4,19 @@
 
 from irc.commands import test, help, git, link, chanops
 
+def get_alias(key):
+    """used by help.py, e.g. so we know !voice corresponds to chanops.py"""
+    aliases = {
+        "voice": chanops,
+        "devoice": chanops,
+        "op": chanops,
+        "deop": chanops,
+    }
+    return aliases[key]
+
 def check(connection, data, hook):
     data.parse_args() # parse command arguments into data.command and data.args
-    
+
     if hook == "join":
         pass
 
@@ -19,10 +29,10 @@ def check(connection, data, hook):
     if hook == "msg":
         if data.command == "!test":
             test.call(connection, data)
-            
+
         elif data.command == "!help":
             help.call(connection, data)
-            
+
         elif data.command == "!git":
             git.call(connection, data)