Björn Persson wrote:
> Tom Lane wrote:
>> I believe that they'd be best advised to say "no", because at this point
>> one of JPEG's principal attractions is near-universal compatibility.
>> Throwing A/C into the mix will throw that away, for what really is a
>> very marginal gain in compression efficiency.
> It's well known around the Internet that to achieve compatibility you should 
> be conservative in what you send and liberal in what you accept. Applied to 
> JPEG: Use only Huffman coding when encoding – except maybe if you know that 
> all 
> recipients can handle arithmetic coding – but support both encodings when 
> decoding.

Well said.
Adding decoding support can do no harm.

   Roberto Ragusa    mail at
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