Is the output gzip file a concatenation of gzip blocks?

[shenwei356]

Hi Klaus,

First, I'd like to thank you for this great package, I've used it in several tools of mine.
As the title said, I'm not sure if the output gzip file is a concatenation of gzip blocks. After reading the source code, I think the answer is no. But I'm not sure.

ref: shenwei356/seqkit#443

Best,
Wei

[klauspost]

pgzip uses concatenated deflate blocks. Blocks back-reference previous blocks, which is why there is no practical compression loss. Followed up in your issue.