On Saturday, September 10, 2016 at 5:45:43 AM UTC-7, Matthew Flatt wrote:
> I think that means information about the source stream's alpha channel
> really is not available through the current interface. A pull request
> to add that would be welcome.

I've been looking through bitmap%'s definition and I can't seem to find what I 
would need to change to make it work how I expect. Ah, well, I guess I'll just 
have to manage without the alpha channel detection.

Thanks for the help, Matthew.

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