set-face-stipple broken

[Ulrich Neumerkel]

--text follows this line--
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In GNU Emacs 21.1.1 (i686-pc-linux-gnu, X toolkit)
 of 2001-10-23 on a8.complang.tuwien.ac.at
configured using `configure  --without-toolkit-scroll-bars --prefix /tmp'

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

(set-face-stipple 'default (list 1 4 "\001\001"))

yields an error.  It worked in 20.7

Debugger entered--Lisp error: (error "Invalid stipple attribute" (1 4 "

"))
  internal-set-lisp-face-attribute(default :stipple (1 4 "

") 0)
  set-face-attribute(default nil :stipple (1 4 "

"))
  set-face-stipple(default (1 4 "

"))
  eval((set-face-stipple (quote default) (list 1 4 "

")))
  eval-last-sexp-1(nil)
  eval-last-sexp(nil)
* call-interactively(eval-last-sexp)ple attribute" (1 4 "

"))
  internal-set-lisp-face-attribute(default :stipple (1 4 "

") 0)
  set-face-attribute(default nil :stipple (1 4 "

"))
  set-face-stipple(default (1 4 "

"))
  eval((set-face-stipple (quote default) (list 1 4 "

")))
  eval-last-sexp-1(nil)
  eval-last-sexp(nil)
* call-interactively(eval-last-sexp)