wrong-type-argument (was: Idea: Examples for making the summary buffer look like other newsreaders)

[Michael Cook <michael.cook@cisco.com>]

Lars Magne Ingebrigtsen <larsi@gnus.org> writes:

> You could just alter that to something else.    

when i view that article (the one i'm following-up to), i get the
following stack trace:

Debugger entered--Lisp error: (wrong-type-argument number-or-marker-p nil)
  gnus-convert-gray-x-face-to-xpm(("#JXvzDM.!\\!H$~a{{3O(,C`m+{ghEpOw3i`K3sDvNIk:+lyu\\P-&L#Kd$45\\kIk'zhtnBG{\n {|8cw+&P+_<tn?S6`b!H+s%]bAF\\V{V}P58nmNzZ\"Y&@16=LB,BM@n-7QQ7$t_W~70r|}'V.p,AI|t\n (Y>foPbWvPF,0knwz=YpdsJ&b6O(-X%>'>z8I[ok)<\"`azM)1.bs?o&YX:6KU9ltSB=x-GkJG=KW2=\n s}@!Qn$m,|5e?:^]6]&{tMGrS(5SPE-DuEg<$q!dR&X*|e\\C)2<Jxn*^XUCw3GYb<MS^BhS%#\n" "#F0'k$V)$o|5D>;<*xFdG&@~j#rk>@\"Xx#%,EcmR6]R,hj]5O\n"))
  article-display-x-face()
  apply(article-display-x-face nil)
  (if interactive (call-interactively (quote article-display-x-face)) (apply (quote article-display-x-face) args))
  (save-excursion (set-buffer gnus-article-buffer) (if interactive (call-interactively ...) (apply ... args)))
  gnus-article-display-x-face()
  gnus-treat-article(head)
  gnus-display-mime()
  gnus-article-prepare-display()
  gnus-article-prepare(25758 nil)
  gnus-summary-display-article(25758 nil)
  gnus-summary-select-article(nil force)
  gnus-summary-show-article(nil)
  call-interactively(gnus-summary-show-article)

for some (but not all) other articles recently posted by lars, i
also get a stack trace.

i did `cvs up' a couple hours ago or so.  i'm running emacs 21.1.1.

m.