Re: Defect in XCU compress, uncompress, zcat

[Mark Brown <yyyyy@xxxxxxxxxx>]

> The portable use of compress, uncompress and zcat appears to be limited 
> because the standard allows for systems that do not support adaptive 
> Lempel-Ziv coding.
> 
> The last of the LZW patents listed at www.unisys.com/about__unisys/lzw 
> exipred yesterday, so there is little reason for compression not to be 
> implemented on systems that support the XSI option.

There is the little matter of IBM patent 4,814,746 (on the same 
technology!)
but since it expires in 2 years, I don't think that there will be a 
problem
adding this to the list of things to consider.



-------------------
Mark S. Brown 
STSM, UNIX/Linux OS Standards
IBM Systems Group, Linux Technology Center
yyyyy@xxxxxxxxxx