Hi,
There is a small problem with vntelex.el input method. That is when you type
"aff", the result should be "af" instead of "aff".
My emacs version is GNU Emacs 23.1.1 (i686-pc-linux-gnu, GTK+ Version
2.18.7) of 2010-03-16 on gen2pc.

I made a patch here, hope you guys will fix it soon. It's quite annoying
when typing in Vietnamese while this bug still exists.

Thanks.
--
Nguyễn Bảo Ngọc

*** /usr/share/emacs/23.1/leim/quail/vntelex.el.old 2010-04-05
04:22:53.000000000 +0700
--- /usr/share/emacs/23.1/leim/quail/vntelex.el 2010-04-05
04:11:55.000000000 +0700
***************
*** 285,291 ****
   ("Dd" ?Đ)
  ;("$$" ?₫) ; U+20AB DONG SIGN (#### check)

!  ("aff" ["aff"])
   ("AFF" ["AF"])
   ("Aff" ["Af"])
   ("ass" ["as"])
--- 285,291 ----
   ("Dd" ?Đ)
  ;("$$" ?₫) ; U+20AB DONG SIGN (#### check)

!  ("aff" ["af"])
   ("AFF" ["AF"])
   ("Aff" ["Af"])
   ("ass" ["as"])