I just downloaded 7-Zip 18.01, and to my dismay, discovered it still updates archives even when nothing in the archive changed. We have requested this behavior be fixed many times, and it is now close to becoming a show stopper for us.
We use 7-Zip to publibsh updated archives to our Web site (so users can download them), but because of this behavior, we end up publishing ALL files instead, not just the updated ones. This causes a huge drain on our limited bandwidth.
Are there plans to finally fix this bad design? If not, we're going to have look at abandoning 7-ZIP and returning to WinZIP. 7-ZIP gives somewhat better compression, but that doesn't make up for being a huge bandwidth hog.
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When the spec (documents/help file) says the behaviour is something and 7zip is not even close to the behaviour specified then by most peoples assessment that is a bug! I'd say quite a big bug too...
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
I just downloaded 7-Zip 18.01, and to my dismay, discovered it still updates archives even when nothing in the archive changed. We have requested this behavior be fixed many times, and it is now close to becoming a show stopper for us.
We use 7-Zip to publibsh updated archives to our Web site (so users can download them), but because of this behavior, we end up publishing ALL files instead, not just the updated ones. This causes a huge drain on our limited bandwidth.
Are there plans to finally fix this bad design? If not, we're going to have look at abandoning 7-ZIP and returning to WinZIP. 7-ZIP gives somewhat better compression, but that doesn't make up for being a huge bandwidth hog.
Maybe later.
This is quite a big bug for a release (-u option just not working!) so imo it should be fixed asap. Is it a difficult fix?
john
It's not bug. It's missing of feature.
It's special case. So some changes in code are required. Not so simple.
When the spec (documents/help file) says the behaviour is something and 7zip is not even close to the behaviour specified then by most peoples assessment that is a bug! I'd say quite a big bug too...
It's becoming more critical to us every day. If you won't commit to fix this long standing shortcoming soon, we're going have to switch to WinZIP.
There are other completely free incremental archivers. I won't say anything in the 7-Zip forum, but they shouldn't be hard to find.