Date: Tue, 16 Jun 92 12:18:57 JST From: Stephen Turnbull To: norm AT theory DOT lcs DOT mit DOT edu Cc: djgpp AT sun DOT soe DOT clarkson DOT edu Subject: UNZIPPING djgcc201.zip Norm-- You may have been caught in the same trap I was. I was trying to get DEmacs from the 'wustl' mirror of the 'SIMTEL20' archives, and having problems with PKUNZIP. This resulted in the following exchange between DEmacs' creator Hirano and Keith Petersen of the SIMTEL20 archives: > hirano AT tkl DOT iis DOT u-tokyo DOT ac DOT jp (HIRANO Satoshi) wrote: > > I am a creater of Demacs, DOS version of GNU Emacs. I got some mails > > from my customers that saying files under /mirrors/msdos/demacs in > > your archive is broken. Please check correctness of zip files. > > The files are good on OAK.Oakland.Edu and SIMTEL20 as well. The people > who claim that those ZIPs are bad are the people who don't have the > latest PKUNZIP. Version 1.10 is needed to extract all ZIP files in the > SIMTEL20 collection. The Info-ZIP group's UNZIP41 will also work. > > In every case of such complaints I have received, it has been determined > that the person was trying to use PKUNZIP version 1.02 or earlier to > extract the files. > > Keith Petersen > Maintainer of the MSDOS, MISC and CP/M archives at SIMTEL20 [192.88.110.20] > Internet: w8sdz AT TACOM-EMH1 DOT Army DOT Mil or w8sdz AT vela DOT acs DOT oakland DOT edu > Uucp: uunet!umich!vela!w8sdz BITNET: w8sdz AT OAKLAND My bug report was sufficiently confused that I'll just condense the symptoms here: when UNZIP'ing files created by PKZIP 1.10, PKUNZIP 1.02 reports a damaged file. However, when you test the file, it says that you need only PKUNZIP 1.0 to UNZIP it. This is false; you often need ver. 1.10. This is a bug in PKZIP 1.10. Also, despite what Petersen wrote, it is often possible to UNZIP SIMTEL20 files (at least on the 'wustl' mirror archive) using earlier versions. I guess this is because those files were ZIP'ed using the earlier version, and not reZIP'd, or the use of ver. 1.10 features may be intermittent. If this isn't your problem, check the usuals: all downloads were done in binary mode, etc. Steve Turnbull Institute of Socio-economic Planning University of Tsukuba Tsukuba, Ibaraki 305 Japan turnbull AT sk DOT tsukuba DOT ac DOT jp "We are *not* a dating service for economists."