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From: Dan Nicolaescu <dann@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: running ./temacs
Date: Thu, 18 Nov 2010 17:19:13 -0500
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Stefan Monnier <monnier@IRO.UMontreal.CA> writes:

>>>>> [Hacking around this so that Vprocess_environment is initialized when
>>>>> not dumping makes ./temacs work correctly]
>>>> In case anyone wants to see the difference in behavior, here's the
>>>> ugly hack:
>>> Could you explain your code (i.e. why you need those strcmp hacks, why
>>> you need to set&unset initialized, ...)?
>> set_initial_environment only initializes Vprocess_environment if
>> `initialized' is set.
>
> Do you happen to know why?

No idea.  I'd speculate that it's undesirable to initialize it when dumping...