Defining key onto copied global map problem

[Tomohiro MATSUYAMA]

Hi, all

I faced a problem when I define a key onto the copied global map.

After executing following code:

    (define-key (copy-keymap (current-global-map)) (kbd "M-c") 'ignore)

"M-c" won't work and just ignores.
I expected that "M-c" just works as defined in (current-global-map).

I'm using:
GNU Emacs 23.0.60.1 (i386-apple-darwin9.6.0, NS apple-appkit-949.43)
of 2009-01-27 on macbook.local

Regards,

MATSUYAMA Tomohiro