vc-follow-symlinks confirm message is not read only

[Hiroshi Fujishima]

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Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

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Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

When visiting a symbolic link to a file under CVS control and
vc-follow-symlinks's value is ask, Emacs display following message:

        "Symbolic link to CVS-controlled source file; follow link? "

This message is not read only, so you delete it to press DEL key.

In GNU Emacs 21.3.50.1 (sparc-sun-solaris2.8, X toolkit, Xaw3d scroll bars)
 of 2004-05-04 on newton.nature.tsukuba.ac.jp
configured using `configure '--prefix=/usr/local/emacs21' '--without-xim' 
'CFLAGS=-O2' 'CPPFLAGS=-I/usr/local/emacs21/include -I/usr/misc/include' 
'LDFLAGS=-L/usr/local/emacs21/lib -R/usr/local/emacs21/lib''

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: ja_JP.eucJP
  locale-coding-system: japanese-iso-8bit
  default-enable-multibyte-characters: t

Major mode: Group

Minor modes in effect:
  gnus-topic-mode: t
  gnus-undo-mode: t
  iswitchb-mode: t
  tool-bar-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
<backspace> <return> C-c e <up> C-x C-j t o s u r u 
C-k <return> C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n 
C-n C-n C-v C-v C-v C-v C-v q C-f C-f C-f C-f C-f C-f 
C-f C-f C-f C-f C-f C-f C-f C-f C-f C-f C-f C-f C-f 
C-f C-a C-k <return> C-p l n SPC - s SPC C-x C-f l 
i n k <tab> <backspace> <backspace> <backspace> <backspace> 
w o <tab> C h <tab> <return> <backspace> <backspace> 
C-g C-a C-x k <return> <escape> x r e p o <tab> r <tab> 
b <tab> <return>

Recent messages:
Loading thingatpt...done
Loading w3m-tabmenu...done
line-move: End of buffer [2 times]
Loading w3m-filter...done
Loading w3m-form...done
Loading w3m-symbol...done
Loading add-log...done
Loading vc-cvs...done
Quit
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