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Date: Tue, 28 Jun 2022 11:19:56 +0300
From: Andrey Repin <anrdaemon AT yandex DOT ru>
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To: Timothee Besset <ttimo AT ttimo DOT net>, cygwin AT cygwin DOT com
Subject: Re: cygpath 3.3.4 : incorrect windows to unix path conversions
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Greetings, Timothee Besset!

> Hello,

> We are seeing some odd behavior from cygpath.exe when it is copied and used
> outside the normal cygwin installation directory:

> PS C:\Users\ttimo> C:\cygwin64\bin\cygpath.exe -a -u "C:"
> /cygdrive/c

To begin with, "C:" means "current working directory on drive 'C:'". Not "root
directory of 'C:'".
The behavior of cygpath is incorrect in this case.

> After copying cygpath.exe and cygwin1.dll to a blank C:\tmp:

Both must be in '…/bin' directory, this is user error.

> PS C:\Users\ttimo> C:\tmp\cygpath.exe -a -u "C:"
> /

> (should be /cygdrive/c!)

No? See above.

> After copying those same files to C:\tmp\tmp:

> PS C:\Users\ttimo> C:\tmp\tmp\cygpath.exe -a -u "C:"
> /cygdrive/c

> It works again!

By coincidence. (And no.)

> We bundle a few cygwin pieces (ssh, rsync) in our application and run them
> on machines that may not have cygwin installed, this is why we are trying
> to use cygpath outside a normal installation directory - see
> https://gitlab.steamos.cloud/devkit/steamos-devkit for details.

See above, cygwin tools' layout must follow FHS, or you will see all sorts of
issues.
That aside, you could always use /proc/cygdrive/ root for manual path conversion.

> We've been using this setup for more than a year and only noticing this
> now; I suspect this used to work fine but I couldn't tell you of an older
> version that worked for sure.

Um, no.


-- 
With best regards,
Andrey Repin
Tuesday, June 28, 2022 11:14:52

Sorry for my terrible english...

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