tellable shouldn't gist messages

[AlexDaniel]

See IRC log.

The message was too long so it gisted it, but it didn't mention the user so a message like this can go unnoticed. Moreover, even if the message doesn't fit a little bit, it shouldn't gist it. Maybe in cases like this it should split the message in half, or something like that.

[AlexDaniel]

It's much better now but it is still an issue.

<TreyHarris> You could look at https://github.com/weechat/weechat/blob/d2dda92dafcf346d1a158f308e7f8fbfcc313281/src/plugins/irc/irc-message.c#L983 which is how WeeChat decides whether and how to split messages