Hi, I am trying to add a pdf compression level parameter to
> the rc file, with possible values 0 (no compression) or 1
> to 9 (as in gzip). If I make the default nonzero but set
> the value to 0 in my rc file, the default takes over. It
> seems to me that the two "if cval" tests in rc_params
> should be changed to "if cval is not None"; but would this
> have unintended consequences?
I took a quick look, and 'if cval is not None' looks right to me too.