Re: flattening: two ways, two different results

On Thu, 31 Aug 2023, frechefuchs via Graphicsmagick-help wrote:
>
> But while we're at it, while converting logo: to PNG24: and PNG32:
> works, the conversion fails for PNG48: (and PNG64:).
>
>> gm convert logo: PNG48:- | gm convert - info:-
>> gm convert: No encode delegate for this image format (PNG48) [No such file or directory].
>> gm convert: Unable to open file (/tmp/gmI3cJGb) [No such file or directory].
>
> Is that to be expected once again?

You have discovered a bug that I was not aware of!  There are missing 
module aliases to dispatch requests for those names to the PNG 
module.

>> gm version
>> GraphicsMagick 1.3.35 2020-02-23 Q16 http://www.GraphicsMagick.org/

Alas, the above version is getting rather old and there have been 
quite a few releases since then.  When I solve the various issues you 
discovered, you will not be able to experience the fixed version 
without updating.

In addition to the PNG module aliases issue, I plan to attempt to 
solve the issue that a request for 50% should be 32767 rather than 
32768.  I am not sure what rats nest will emerge while looking into 
that.

Bob
-- 
Bob Friesenhahn
[email protected], http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
Public Key,     http://www.simplesystems.org/users/bfriesen/public-key.txt