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Date:	Mon, 12 Dec 2022 16:20:36 +0100
To:	cygwin AT cygwin DOT com
Subject:	Re: [EXTERNAL] Re: Strange behavior when executing programs
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From:	Corinna Vinschen via Cygwin <cygwin AT cygwin DOT com>
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Cc:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
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On Dec 12 14:52, Lavrentiev, Anton (NIH/NLM/NCBI) [C] via Cygwin wrote:
> > Let's consider this problem again, but I don't see a quick and easy
> > solution.
> 
> $ realpath /cygdrive/s/ado/msadox.dll
> /cygdrive/s/ado/msadox.dll            <====== IMO the problem is actually here
> 
> $ realpath msadox.dll
> /cygdrive/c/Program Files/Common Files/System/ado/msadox.dll
> 
> Both paths should start with /cygdrive/c, and then those would be identical
> (and, hence, I suppose for the purposes of the OP).
> 
> A substed drive is nothing BUT a symlink, should be treated no differently than
> /cygdrive/s -> /cygdrive/c/Program Files/Common Files/System

I agree, and that was how I tried implementing it back when.

The problem is that resolved paths may become longer than MAX_PATH.  So
people want to keep the paths with intact substituted drive prefix to
run native commands from Cygwin.


Corinna

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