ediff-windows-wordwise problem

[Kin Cho]

Hi,

I have been using ediff for files and buffers for a long
time and really appreciate how well it works.

Today, I tried ediff on windows for the first time, and it
doesn't work for me.

My application is to find the difference between two similar
functions in a file.  So I opened the file, split the window in
the frame into 2 windows, positioned the windows in the functions
in question, then evaluated this:

(let ((wl (window-list)))
    (ediff-windows-wordwise t (car wl) (cadr wl)))

I got this error:

ediff-windows: Wrong type argument: window-live-p, t

I found that ediff-get-next-window called by ediff-windows seems
to have a bug -- it returns t if a window is passed to to it.  I
used an ugly defadvice to workaround this problem.

Now that ediff-windows runs, but it doesn't work right.  It's not
obvious what the problem is so I didn't try further.

-kin

emacs-version's value is "21.2.1"