Re: [pdf-devel] Bug in LZW filter?

[Juan Pedro Bolívar Puente]

Hi guys,

> this is also caused by the 1)3)2)-order (see my earlier mail). The
> regular algorithm resets the dictionary before adding entry 4097. It
> outputs a code that we output after reset. With +1 the output gets right.
> 
> But don't we miss a dictionary entry? (last one in old dict (#4097),
> that should be in the new dict) Maybe this is a bug.

I am following your conversation and I must admit I do not understand
the need for these changes nor the precise nature of this 1-2-3/1-3-2
problem. It was too long ago that I implemented that code... I will try
to find some time re-read the standard and the code.

Do you have also test cases that fail without the changes and succeed
otherwise?

JP