[h-e-w] ps-print and apropos-command in emacs 21 (bug?)

[Geert Ribbers]

Hi.

Whenever ps-print is loaded the apropos-command fails when used with pre-fix
command.

(require 'ps-print)
Then type C-u C-h a copy <RET>
And the result is an error:
apropos-command: Symbol's function definition is void:
ps-x-copy-coding-system
The same for apropos-string face:
C-u C-h a face <RET>
apropos-command: Symbol's function definition is void: ps-x-extent-face

I checked and it doesn't happen with emacs 20.3.7.
I does happen with both emacs 21.1.1 and 21.2.1.

Has anyone experienced the same, or maybe even solved it?

Geert Ribbers