#2364 7-Zip 22.01 extracted zip file with extra _ extension

[Ronnie Lim]

I happened to use the latest version of 7-Zip 22.01 to extract files from VS2010 Image Library (.zip file) and there is an underscore appended to the file extensions of the extracted files. Both WinRAR and Windows Explorer are able to process the file correctly. This happens in both Windows 7 and Windows 10. I have attached the VS2010 Image Library file to this message for verification.

[Igor Pavlov]

files headers in that zip archive have space (0x20) at the end of name:
"Properties.png "
But Windows doesn't allow spaces at the end of name. So 7-Zip replaces that space character to underscore _.
We could remove such space at tail. But I suppose that it's better to write _ characters instead of incorrect character. So users can see that something is wrong.
That zip archive probably is not official zip archive from microsoft.
Where did you get it?

[Ronnie Lim]

Thank you for your explanation. It is an official zip file from Microsoft.
It is installed during installation of Visual Studio 2010 Professional
Edition and I also installed Visual Studio Service Pack 1 as well, so I am
not sure if the service pack replaced it.

On Monday, October 10, 2022, Igor Pavlov ipavlov@users.sourceforge.net
wrote:

files headers in that zip archive have space (0x20) at the end of name:
"Properties.png "
But Windows doesn't allow spaces at the end of name. So 7-Zip replaces
that spoace chraceter to undescore _.
We could remove such space at tail. But I suppose that it's better to
write _ characters instead of incorrect characters. So users can see that
something is wrong.

That zip archive probably is not official zip archive from microsoft.
Where did you get it?

---

• [bugs:#2364] https://sourceforge.net/p/sevenzip/bugs/2364/ 7-Zip 22.01
  extracted zip file with extra _ extension*

Status: open
Group:
Created: Mon Oct 10, 2022 11:19 AM UTC by Ronnie Lim
Last Updated: Mon Oct 10, 2022 11:19 AM UTC
Owner: nobody
Attachments:

• VS2010ImageLibrary.zip
  https://sourceforge.net/p/sevenzip/bugs/2364/attachment/VS2010ImageLibrary.zip
  (16.5 MB; application/zip)

I happened to use the latest version of 7-Zip 22.01 to extract files from
VS2010 Image Library (.zip file) and there is an underscore appended to the
file extensions of the extracted files. Both WinRAR and Windows Explorer
are able to process the file correctly. This happens in both Windows 7 and
Windows 10. I have attached the VS2010 Image Library file to this message
for verification.

---

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[Ronnie Lim]

Thank you for your explanation. It is an official zip file from Microsoft. It is installed during installation of Visual Studio 2010 Professional Edition and I also installed Visual Studio 2010 Service Pack 1 as well, so I am not sure if the service pack replaced it.

[Igor Pavlov]

That zip archive was discussed alkready here:
https://sourceforge.net/p/sevenzip/discussion/45797/thread/d8509902/

[Ronnie Lim]

I am sorry I missed that thread. My apologies for raising an old issue. Thank you.