Can I make files binary by default?

[Robert Church]

I'm trying to make all files binary, except for those specified in
cvswrappers (rationale: treating text files as binaries doesn't screw them
up, but treating binaries as text files does).

So, I have a cvswrappers file that looks like this:

* -k 'b' -m 'COPY'
*.c -kkv
# many more extensions follow . . .

I find that this causes _all_ files to be treated as text, with keyword
expansion.

Then, I tried this:

*.c -kkv
# many more extensions follow . . . 
DEFAULT -k 'b' -m 'COPY'

That didn't help either.

Any further suggestions, or is this a bug? Or am I confused about CVS's
regexes? 
This is cvs 1.10.7 on Solaris.

Thanks.