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Date: Wed, 30 Nov 2016 12:03:15 +0100
From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: cygwin@cygwin.com
Subject: Re: Retrieving per-process environment block?
Message-ID: <20161130110315.GG14074@calimero.vinschen.de>
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References: <CAOTD34ZFH5E3r3AuDOXctss46e1hoU2f9pwE1mt4L674J2Ak_A@mail.gmail.com> <20161117140012.GA23664@calimero.vinschen.de> <CAOTD34Y9TRq2Qq8Mn2awTf9SCgz0qnbBa-a117pkSEvz9gaHKQ@mail.gmail.com> <98eb08bf-5012-fe14-b10c-241b427c4366@cs.umass.edu> <CAOTD34bPTUkKiHSmqvczz6juePBD=6PyzabDFfHpYL_cFzyf9A@mail.gmail.com> <2925977.20161129192741@yandex.ru> <583E1D4A.4020703@gmx.de> <111bc961-5f69-8e27-f78a-2b82f351d811@cs.umass.edu> <237e4e33-4b51-a124-4108-d67e715dcbf0@lysator.liu.se> <20161130104813.GF14074@calimero.vinschen.de>
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On Nov 30 11:48, Corinna Vinschen wrote:
> On Nov 30 10:15, Peter Rosin wrote:
> > On 2016-11-30 04:00, Eliot Moss wrote:
> > > On 11/29/2016 7:28 PM, Herbert Stocker wrote:
> > >=20
> > >> Or we simply copy the variables unconverted to the Windows environme=
nt
> > >> block, as the Windows env block is not used for anything else - up to
> > >> now it is not updated at all.
> > >=20
> > > Maybe we could stash them inside one large variable?  Would that help
> > > at all?  (It does demand a quoting convention, but since this is all
> > > internal stuff, that may not be too hard.)
> >=20
> > I believe this is a dead end. The Windows environment block has an
> > unacceptable size limit which is circumvented by the internal Cygwin
> > handling. Since this is about exposing said Cygwin environment, it
> > would simply not work for big environments.
>=20
> ACK

Uhm, sorry, not ACK, this is nonsense.  The Windows env is not limited
to 32K characters, only the CreateProcess call is, unless you use the
option CREATE_UNICODE_ENVIRONMENT.  In that case, you can pass bigger
envs.  Cygwin uses it, too, when calling native Windows processes.


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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