emacs modifies (s/fd/ad/) C code as you type(!)

[Jim Meyering]

[using the latest from CVS, updated/built a few hours ago]

This is pretty nasty.  I typed `int fd;' and later got a compile
failure because it had been converted (as I typed!) to `int ad;'.

Reproduce like this:
Edit a new (empty is fine) file whose name ends in `.c', e.g.:

  emacs -q /tmp/no-such.c

and then type `fd '.  After I type the SPACE, I see that
the contents of my buffer are changed to `ad '.
Wow.

---------------
In GNU Emacs 21.3.50.1 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2004-10-28 on pi
configured using `configure '--disable-nls' 
'--prefix=/p/p/emacs-2004-10-28.08h23' 'CC=/usr/bin/gcc' 'CFLAGS=-O3 
-fstrict-aliasing' 'LDFLAGS=-s''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: nil
  locale-coding-system: nil
  default-enable-multibyte-characters: t

Major mode: C

Minor modes in effect:
  mouse-wheel-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  line-number-mode: t
  abbrev-mode: t

Recent input:
a SPC f d SPC <escape> x r e p o r <tab> <return>

Recent messages:
Loading mwheel...done
(emacs -q /tmp/no-such-file.c)
Loading tooltip...done
Loading image...done
(New file)
Loading cc-mode...done
Loading emacsbug...done