Gnus %u summary-line-format changes hoses my instance

[Galen Boyer]

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In GNU Emacs 21.1.1 (i386-mingw-nt5.0.2195)
 of 2001-10-22 on GALEN
configured using `configure --with-gcc (2.95)'
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: 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:

I was just starting out using the %u format code in the
gnus-summary-line-format.  (I was trying out something new in the
bbdb)

My format was,
(setq gnus-summary-line-format  "%U%R%d%I%([%-20,20f%]%) %s (%~(ignore 1)2t)\n")

All I did was add %u to the front of the string (thinking that
the bbdb was somehow going to take over from there).

It became
(setq gnus-summary-line-format  "%u%U%R%d%I%([%-20,20f%]%) %s (%~(ignore 
1)2t)\n")

I then got the error

Debugger entered--Lisp error: (void-function gnus-user-format-function-%)
  (gnus-user-format-function-% gnus-tmp-header)

Okay, fine.  So, I then go back to my gnus and remove the %u
bringing it back to the original.  I then reread the init file.
Now, trying to enter the group I get the same error as before.

Debugger entered--Lisp error: (void-function gnus-user-format-function-%)
  (gnus-user-format-function-% gnus-tmp-header)

I then shut down Gnus, as my next recourse.  When I start it back
up again and enter a group, all of my colors are gone.  I now
shut down Emacs.

Recent input:
<return> I t SPC b e c a o m <backspace> <backspace>
m e w <backspace> <return> C-y C-o C-p M-f M-f M-f
M-f M-f C-f C-f C-f % u C-n C-k C-k C-n M-h C-x f C-n
C-n C-n C-n C-n C-p C-e <backspace> SPC b r i n g i
n g SPC i t SPC a <backspace> b a c k SPC t o SPC t
h e SPC r <backspace> p o r <backspace> <backspace>
<backspace> o r i g i n a l . SPC SPC I S-SPC t h e
n <menu-bar> <help-menu> <report-emacs-bug>

Recent messages:
 [2 times]
Mark set
Updating buffer list...done
Commands: m, u, t, RET, g, k, S, D, Q; q to quit; h for help
Mark set
Wrote c:/emacs/home/.gnus
Mark set [4 times]
Auto-saving...done
Mark set [2 times]
Loading emacsbug...done

--
Galen deForest Boyer
Sweet dreams and flying machines in pieces on the ground.