fill-paragraph yanks text?

[Nelson, Laird]

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In GNU Emacs 21.1.1 (i386-msvc-nt4.0.1381)
 of 2001-10-22 on buffy
configured using `configure --with-msvc (12.00)'
Important settings:
  value of $LC_ALL: EN_US
  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: ENU
  locale-coding-system: iso-latin-1
  default-enable-multibyte-characters: t

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

fill-paragraph seems to have inserted one of the entries in the yank ring.
I
typed some text past the end of my fill column, did an ESC-q, and it
inserted
some stuff that I had previously killed.  Then it filled the paragraph.

Recent input:
s t a n c e s SPC n e e d SPC t o SPC f u n c t i o 
n . <escape> q C-x u C-h k <escape> q <escape> q C-x 
u <escape> q <help-echo> C-h a b u g <return> <down> 
<down> <down> <up> <up> C-c C-b y F i l l SPC p a r 
a <backspace> <backspace> <backspace> <backspace> <backspace> 
- p a r a g r a p h SPC C-g C-g <escape> x r e p o 
r t SPC e m a c s SPC b u g <return>

Recent messages:
Wrote
i:/FeBGladiator/Maximus/Maximus/com/fidelity/maximus/display/ib/util/TestCas
eIbContainer.java
Undo!
Loading d:/emacs-21.1/bin/fns-21.1.1.el (source)...done
Type C-x 1 to remove help window.  C-M-v to scroll the help.
Undo!
Loading d:/emacs-21.1/lisp/apropos.elc...done
Type C-x 4 b RET to restore the other window.  C-M-v to scroll the help.
reporter-submit-bug-report: Quit
keyboard-quit: Quit
Loading d:/emacs-21.1/lisp/mail/emacsbug.elc...done