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From: "Michel LaBarre" <michel DOT labarre AT rogers DOT com>
To: <cygwin AT cygwin DOT com>
References: <CAKqBF1jHvNbra2a=k12nAwDE2_0W14iG1v=KhuACzPmJmicfYA AT mail DOT gmail DOT com> <000a01d3b4a0$f54ede30$dfec9a90$@rogers.com> <20180305164448 DOT GC25306 AT calimero DOT vinschen DOT de>
In-Reply-To: <20180305164448.GC25306@calimero.vinschen.de>
Subject: RE: sed seems to force UC filename on Mixed 8.3 filenames on FAT32
Date: Mon, 5 Mar 2018 12:05:31 -0500
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> -----Original Message-----
> From: cygwin-owner AT cygwin DOT com [mailto:cygwin-owner AT cygwin DOT com] On
> Behalf Of Corinna Vinschen
> 
> On Mar  5 11:42, Michel LaBarre wrote:
> >
> > > Behalf Of Fergus Daly
> > > Starting to look exactly like that. On Windows 7 there is no problem.
> > > On earlier W10 machines in this office there is no problem. My machine
> > > underwent a massive (time-consuming) update on or around 13-FEB to
> > > Microsoft Windows Version 1709 Build 16299.248]
> > > from the previous
> > > Microsoft Windows Version 1703 Build 15063.936]
> > > and the troubles began then:
> > >
> > > ~> touch TryThis.TxT
> > > ~> ls T*
> > > TryThis.TxT
> > > ~> dos2unix TryThis.TxT
> > > dos2unix: converting file TryThis.TxT to Unix format...
> > > ~> ls T*
> > > TRYTHIS.TXT
> > >
> > > This on a FAT32 stick. (Can anybody confirm this behaviour?) So I'm
> > > guessing Windows has revised its default mount shortname syntax for
> > > VFAT. Is there a way I can climb in and alter / override that, does
> > > anybody know?
> >
> > 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

Nuts!  So the problem manifests if the input and output files are the same whether using -n or not.  (Sorry Fergus - no workaround.)

As an aside, I experimented with "ed" to change a file and re-write it presuming it might behave as dos2nix - nope - it preserved mixed case ok.  

Michel

> 
> Corinna
> 
> --
> Corinna Vinschen                  Please, send mails regarding Cygwin to
> Cygwin Maintainer                 cygwin AT cygwin DOT com
> Red Hat


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