Talk:ZIP

PPMd

So the PPMd thing doesn't get reverted again, here's a test pk3, the complied ACS is PPMd compressed by 7-Zip (the source is just deflated). If it loads successfully (it won't as of g3.1.0) it just logs "PPMd var.I (zip) works!", and if it doesn't, the log should show an error about an "unsupported compression algorithm (#98)".

Zip/pk3 uses a newer, incompatible version of PPMd (var. I rev. 1) compared to 7z/pk7 (var. H). 7-Zip itself has support for the newer version in zip files, but since it isn't in the SDK there might be licensing issues if we want to include it (I'm not sure if any files on idgames use it). Otherwise please leave the note in. --Tomatopipps (talk) 04:08, 26 June 2017 (CDT)

It doesn't matter what is supported in 7z. This page is about ZIP and there is no PPMd support in ZIP so the note is ultimately pointless. --Graf Zahl (talk) 17:49, 26 June 2017 (CET)