Error is shown to user only the first time

[anufrievroman]

Something is broken with the logging and error feedback system. The first time user makes a mistake, the error is show, but after clear_buffer() is executed to clean the error, something breaks and new errors are no longer displayed, though they are correctly logged into the file. Must have something to do with the way the buffer is cleared with self.buffer = io.StringIO(), which technically creates a new one.

[anufrievroman]

Fixed with d5e4fdf