konversation silently discards some messages (irc channels with non-ascii characters)

Steps to reproduce:

- Set the character encoding in Konversation to utf-8.

- Join an IRC channel with a non-ASCII character in its name, say, "#testä" (the channel name is in utf-8).

- Using another IRC client, send a message which is not a valid utf-8 message (say, something with non-ASCII characters encoded latin-1) to "#testä" (naturally the channel name has to be in utf-8).

- Konversation silently discards the message.

I would expect one of the following:

1) Konversation shows the message with the broken characters replaced by some "invalid character marker".

2) Konversation guesses the correct encoding of the message and shows it correctly. (It seems that this is what happens in the case of channels with only ASCII characters in their names.)

3) Konversation show at least something; a warning in the status window if nothing else.

(Package konversation, version 0.19-0ubuntu4.)