GtkText widget addition

[Christopher James Lahey <clahey umich edu>]

I'd like to make it so that the GtkText widget has signals that get
activated every time the text is changed.  Essentially a "delete" signal
and an "insert" signal which specify that some change has occured in the
text.  The callback functions would recieve information about where the
change was made and what was inserted or deleted.  Eventually this could
even include properties.

If anyone has any ideas how to do this, any information about the text
widget, or an interest in using these abilities if they are completed,
please tell me.
   Chris