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From: Achim Gratz <Stromeko AT nexgo DOT de>
To: cygwin AT cygwin DOT com
Subject: Re: [ANNOUNCEMENT] Updated: Cygwin 2.2.0-1
References: <announce DOT 20150803131950 DOT GA18878 AT calimero DOT vinschen DOT de>	<55BFB64C DOT 1010802 AT towo DOT net>	<20150803192940 DOT GA19315 AT calimero DOT vinschen DOT de>	<loom DOT 20150804T094839-714 AT post DOT gmane DOT org>	<895515CC-6BB7-41E7-AEA5-30FBBE071153 AT etr-usa DOT com>
Date: Tue, 04 Aug 2015 20:53:52 +0200
In-Reply-To: <895515CC-6BB7-41E7-AEA5-30FBBE071153@etr-usa.com> (Warren	Young's message of "Tue, 4 Aug 2015 12:14:37 -0600")
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Warren Young writes:
> When you speak of this in terms of processes, I think you mean that
> the Cygwin DLL would need to filter the environment, which sounds
> heavy-handed.

Cygwin DLL already does some conversions of the Windows environment.  It
could (hypothetically) do a more thorough job and/or sanitize the
environment to make the result more POSIX conformant.

Try defining some Wnidows environment variables that have illegal POSIX
names, for instance.

> If you mean that /etc/profile and such will do the filtering, that could work.
>
>> 2. Do the same checks as the Cygwin DLL and fall back to some more sensible
>> default if HOME is botched.
>
> This isn’t a second option, it’s an implementation design for option 1.

That's the part that involves me changing base-files.

>> 3. Ignore the issue.
>
> Here’s an interesting experiment to try on your non-Cygwin POSIX boxes:
>
>     $ HOME=/dfjkshkds bash -l
>     $ echo $HOME
>
> Guess what it prints.
>
> Hint: It isn’t the second-to-last field in /etc/passwd. :)
>
>
>
>
> Spoiler: Apparently Cygwin is already doing the standard thing.

That's why I offered to ignore the issue.  That also needs nothing to be
done by me, which is an added benefit.  :-)


Regards,
Achim.
-- 
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+

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