Console fails if prompt is removed

[markbirbeck]

The prompt is used to mark the end of the buffer and so track the insertion point. If a user deletes any part of the prompt then the console will fail.

It should be straightforward to fix this, but for a now a workaround is to either (a) don't damage the prompt, or (b) repair it again if you do damage it.

[markbirbeck]

A temporary workaround is simply to reinstate the prompt: go to the end of the file and type IRC> (with a trailing space) at the beginning of the line and you should be all good again.