GtkText-like widget with sane wrapping?

[Richard Hult <rhult hem2 passagen se>]

Is there any way in to get a GtkText widget that does
sane line wrapping? That is, does not work like Emacs...
It would be so much better if the buffer acted like if there 
were a newline at the end of the line so that the user could use
arrow keys in a sane way to move up and down through the lines.

This is especially needed in Balsa. Writing mails in Balsa is
a PITA right now, as you have to insert line breaks manually.

Richard