Limiting a GtkTextBuffer

[Bryan Christ <bryan christ hp com>]

Is there anyway to limit the size of a GtkTextBuffer by line count?  I 
would like to be able to set a maximum number of lines.  In some cases, 
I would like to truncate the extra text appened to the end of the 
buffer.  At other times, I would like to delete the first line in the 
buffer and append the new line to then end (like a ring buffer).  Is 
GtkTextBuffer capable of this?

Thanks in advance,
Bryan