Hello Igor Pavlov.
Question One :
Why 7za.exe cannot understand "Z" format ?
the code for "Z" decoder is rather small,
so 7za.exe should understand "Z" as "gz" and "bzip2".
Question Two :
I am trying to port 7-zip415b for p7zip.
But I cannot compile ZipHandler.cpp
because it needs "../../Compress/Shrink/ShrinkDecoder.h"
Where are the "Compress/Shrink" files ?
1) Probably I'll try it in next version
2) It was my miss. I've updated source code at sf.net. Check it.
Ok, now sources compile.
But how can I do some tests with shrink in Zip ?
7-zip do not provide Shrink compressor.
How can I make Zip archives that use Shrink method ?
Or where can I find Zip archives that use Shrink method ?
There was link at ZIP::Shrink message.
It can create zip archive. But you must fix that archive with pkzip.