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Sorry folks but I am going to top post for the sake of clarity. The original msg is below for reference. Corinna, I ran the following and I attached the trace file: E:\junk>ls > Zot.txt E:\junk>ls Zot.txt E:\junk>strace -o d2u.trace dos2unix -n Zot.txt Zot.txt dos2unix: converting file Zot.txt to file Zot.txt in Unix format... E:\junk>ls ZOT.TXT d2u.trace I did further experiments. You are correct regarding overwriting but not in a generic case (e.g. ls > Foo.txt twice preserves case) but in the specific case of "dos2unix". If the destination file exists, case will be lost. E:\junk>ls ---- empty folder E:\junk>ls > Zot.txt E:\junk>dos2unix -n Zot.txt Foo.txt ---- works first time dos2unix: converting file Zot.txt to file Foo.txt in Unix format... E:\junk>ls Foo.txt Zot.txt E:\junk>dos2unix -n Zot.txt Foo.txt ---- but not second time dos2unix: converting file Zot.txt to file Foo.txt in Unix format... E:\junk>ls FOO.TXT Zot.txt I re-ran the preceding capturing trace files which I have also attached, as in: E:\junk>ls d2u.trace E:\junk>ls > Zot.txt E:\junk>ls Zot.txt d2u.trace E:\junk>strace -o d2u_firsttime.trace dos2unix -n Zot.txt Foo.txt dos2unix: converting file Zot.txt to file Foo.txt in Unix format... E:\junk>ls Foo.txt Zot.txt d2u.trace d2u_firsttime.trace E:\junk>strace -o d2u_secondtime.trace dos2unix -n Zot.txt Foo.txt dos2unix: converting file Zot.txt to file Foo.txt in Unix format... E:\junk>ls FOO.TXT Zot.txt d2u.trace d2u_firsttime.trace d2u_secondtime.trace Michel > -----Original Message----- > From: cygwin-owner@cygwin.com [mailto:cygwin-owner@cygwin.com] On > Behalf Of Corinna Vinschen > Sent: March 5, 2018 12:14 PM > To: cygwin@cygwin.com > Subject: Re: sed seems to force UC filename on Mixed 8.3 filenames on > FAT32 > > On Mar 5 12:05, Michel LaBarre wrote: > > > From: cygwin-owner@cygwin.com [mailto:cygwin-owner@cygwin.com] > On > > > Behalf Of Corinna Vinschen > > > On Mar 5 11:42, Michel LaBarre wrote: > > > > I have the same build 16299.248 and I get the same behaviour. > > > > Perhaps consider: http://www.zoneutils.com/regtricks/filesystem.htm > > > > for parameters to experiment with. You can use fsutil to control some > of > > > these to avoid direct registry modifications. > > > > I expect it is more subtle otherwise the pervasive nature of the flags > would > > > mean that any file creation would result in UC names, not just dos2unix. > > > > i.e. ls > Foo.txt should produce FOO.TXT > > > > > > Maybne something with overwriting existung files? What if you call > > > `ls > Foo.txt' twice in a row? > > > > > > > Nope - that works ok. (BTW - you were fast on the reply!) > > > > I did try: > > E:\>dos2unix -n Zot.txt Foo.txt > > dos2unix: converting file Zot.txt to file Foo.txt in Unix format... > > E:\>ls > > Foo.txt Zot.txt > > > > I thought using -n might suffice as a quick workaround for Fergus so I tried: > > > > E:\>dos2unix -n Zot.txt Zot.txt > > dos2unix: converting file Zot.txt to file Zot.txt in Unix format... > > E:\>ls > > Foo.txt ZOT.TXT > > But `mv ZOT.TXT Zot.txt' works? > > Can you strace this like this after renaming the file back to Zot.txt > > $ strace -o d2u.trace dos2unix -n Zot.txt Zot.txt > > and send the d2u.trace file to this list? > > > Thanks, > Corinna > > -- > Corinna Vinschen Please, send mails regarding Cygwin to > Cygwin Maintainer cygwin AT cygwin DOT com > Red Hat
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d2u.trace
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d2u_secondtime.trace
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d2u_firsttime.trace
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