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Date:      Thu, 18 Jan 2018 12:32:44 -0800
From:      Conrad Meyer <cem@freebsd.org>
To:        Eric van Gyzen <eric@vangyzen.net>
Cc:        src-committers <src-committers@freebsd.org>, svn-src-all@freebsd.org,  svn-src-head@freebsd.org
Subject:   Re: svn commit: r327354 - head/sys/vm
Message-ID:  <CAG6CVpVuXUcPCX81Nv9XujRVw8psxpLSLRfG9T20w6sr4j6=PA@mail.gmail.com>
In-Reply-To: <601ee1a2-8f4e-518d-4c86-89871cd652af@vangyzen.net>
References:  <201712291905.vBTJ57gI072871@repo.freebsd.org> <20180117224054.GO8113@FreeBSD.org> <601ee1a2-8f4e-518d-4c86-89871cd652af@vangyzen.net>

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On Thu, Jan 18, 2018 at 12:01 PM, Eric van Gyzen <eric@vangyzen.net> wrote:
> On 01/17/2018 16:40, Gleb Smirnoff wrote:
>> Yeah, style is sacred, but is there a single person on Earth who would
>> not agree that moving variables from smaller blocks to function block
>> reduces readability of the code?
>
> I agree that it reduces the readability.  Not only that, it also
> encourages real bugs by allowing access to the variable when it does not
> make sense.

I think the right way to propose this kind of policy change is to get
agreement on how style(9) should be modified =E2=80=94 not arbitrarily go
against style(9) in some files.  The proposed change may be somewhat
contentious and it might be a good exercise to go through the FreeBSD
Community Process.

I might separate these two concerns:

1. Allowing local / block scoped variables
2. Allowing C99 for loop initial declarations

But I could see the argument that (2) is just a boring subset of (1).

Thanks,
Conrad



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