If you could put in a button for toggling the chat logging on and off, and then dump all of the events which are displayed on the guild window at the time of pressing the "export" button, that would be ideal.
Maybe you could require the guild window to be at its smallest height setting before the export button is enabled, so that you would have a known number of events to dump? Just throwing ideas on the table.
Like I said before, I would be happy selecting and exporting one line at a time. That would still be much better than any of my current alternatives
Thanks gm9!