putty screen size issue

[Michael Grant]

I'm having a redraw problem in putty at the bash prompt when I have
lines longer than screen thinks the screen is wide.  It's as if screen
no longer knows how wide my screen really is.  Yet vi and emacs both
know to wrap at the edge of the window.  It's only bash.

I see that this or something similar has been discussed before but
trying the -A option didn't solve this for me.

Michael Grant