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Date:	Wed, 26 Jun 2013 15:10:38 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: cygpath 1.7.18 problem. cypath returns mangled filename
Message-ID:	<20130626131038.GB6966@calimero.vinschen.de>
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On Jun 26 10:07, John Daintree wrote:
> Hi,
> 
> I’ve hit a problem with cygpath. Here’s a script:
> 
> JD0=/cygdrive/d/obj/13.2.tmp/apl/win/32/unicode/winapi/dev/opt
> JD=/cygdrive/c/src/13.2.dss/svn/misc/samples/tmp
> 
> cygpath --version
> 
> echo ......
> echo $(cygpath -up "$JD0:$JD:$JD:$JD")
> echo ......
> echo $(cygpath -up "$JD0:$JD:$JD:$JD:$JD:$JD")
> echo ......
> 
> 
> Here’s its output :
> 
> cygpath (cygwin) 1.7.18
> Path Conversion Utility
> Copyright (C) 1998 - 2013 Red Hat, Inc.
> This is free software; see the source for copying conditions.  There is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
> ......
> /cygdrive/d/obj/13.2.tmp/apl/win/32/unicode/winapi/dev/opt:/cygdrive/c/src/1
> 3.2.dss/svn/misc/samples/tmp:/cygdrive/c/src/13.2.dss/svn/misc/samples/tmp:/
> cygdrive/c/src/13.2.dss/svn/misc/samples/tmp
> ......
> /cygdrive/c/ygdrive/d/obj/13.2.tmp/apl/win/32/unicode/winapi/dev/opt:/cygdri
> ve/c/src/13.2.dss/svn/misc/samples/tmp:/cygdrive/c/src/13.2.dss/svn/misc/sam
> ples/tmp:/cygdrive/c/src/13.2.dss/svn/misc/samples/tmp:/cygdrive/c/src/13.2.
> dss/svn/misc/samples/tmp:/cygdrive/c/src/13.2.dss/svn/misc/samples/tmp
> ......
> Note that the second call to cygpath has “mangled” the first element of the
> returned path. The only difference between that 1st and 2nd calls to cygpath
> is the length of the argument.
> Note that changing  the separator from : to \; doesn’t help – it still
> mangles the return.

PEBCAK.  You're not supposed to put UNIX paths into the function when
using the -u flag.  The path is inspected and potentially mangled on the
assumption that this is a Windows path.  This is necessary to support
Windows paths of more than 260 chars.

Having said that, I changed the behaviour of cygpath so that mangling
is not performed when using the -p option since the mangling only
works on single paths anyway.


Corinna

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

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