From: Junio C Hamano <gitster@pobox.com>
To: Jeff King <peff@peff.net>
Cc: git@vger.kernel.org
Subject: Re: [PATCH 0/2] git-config and large integers
Date: Tue, 20 Aug 2013 16:41:30 -0700 [thread overview]
Message-ID: <xmqqhaekudzp.fsf@gitster.dls.corp.google.com> (raw)
In-Reply-To: <xmqqli3wufmc.fsf@gitster.dls.corp.google.com> (Junio C. Hamano's message of "Tue, 20 Aug 2013 16:06:19 -0700")
Junio C Hamano <gitster@pobox.com> writes:
> Jeff King <peff@peff.net> writes:
>
>> I was playing with a hook for file size limits that wanted to store the
>> limit in git-config. It turns out we don't do a very good job of big
>> integers:
>>
>> $ git config foo.size 2g
>> $ git config --int foo.size
>> -2147483648
>>
>> Oops. After this series, we properly notice the error:
>>
>> $ git config --int foo.size
>> fatal: bad config value for 'foo.size' in .git/config
>>
>> and even better, provide a way to access large values:
>>
>> $ git config --ulong foo.size
>> 2147483648
>
> I may be missing something, but why do we even need a new option for
> the command that is known to always produce textual output?
>
> As you said "Oops", the first example that shows a string of digits
> prefixed by a minus sign for input "2g" is buggy, and I think it is
> perfectly reasonable to fix it to show a stringified representation
> of 2*1024*1024*1024 when asked for "--int".
>
> What am I missing???
If this applied on the writing side, I would understand it very
much, i.e.
$ git config --int32 foo.size 2g
fatal: "2g" is too large to be read as "int32".
and as a complement it may make sense as a warning mechanism to also
error out when existing value does not fit on the "platform" int, so
your
>> $ git config --int foo.size
>> fatal: bad config value for 'foo.size' in .git/config
might make sense (even though I'd suggest being more explicit than
"bad value" in this case---"the value specified will not fit when
used in a variable of type int on this platform"). When .git/config
is shared on two different boxes (think: NFS), the size of "int"
might be different between them, so the logic to produce such a
warning may have to explicitly check against int32_t, not platform
int and say "will not fit in 'int' on some machines".
I dunno.
next prev parent reply other threads:[~2013-08-20 23:41 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-20 22:39 [PATCH 0/2] git-config and large integers Jeff King
2013-08-20 22:42 ` [PATCH 1/2] config: properly range-check integer values Jeff King
2013-08-20 23:07 ` Jonathan Nieder
2013-08-21 2:55 ` Jeff King
2013-08-20 22:44 ` [PATCH 0/2] git-config and large integers Stefan Beller
2013-08-20 22:48 ` Jeff King
2013-08-20 22:47 ` [PATCH 2/2] teach git-config to output " Jeff King
2013-08-20 22:57 ` Jonathan Nieder
2013-08-21 3:00 ` Jeff King
2013-08-21 4:38 ` Jonathan Nieder
2013-08-21 5:00 ` Jeff King
2013-08-21 6:34 ` Jonathan Nieder
2013-08-20 23:06 ` [PATCH 0/2] git-config and " Junio C Hamano
2013-08-20 23:41 ` Junio C Hamano [this message]
2013-08-21 2:43 ` Jeff King
2013-08-21 2:34 ` Jeff King
2013-09-08 8:27 ` [PATCHv2 0/5] " Jeff King
2013-09-08 8:29 ` [PATCH 1/5] config: factor out integer parsing from range checks Jeff King
2013-09-08 8:33 ` [PATCH 2/5] config: properly range-check integer values Jeff King
2013-09-08 8:36 ` [PATCH 3/5] config: set errno in numeric git_parse_* functions Jeff King
2013-09-09 0:36 ` Eric Sunshine
2013-09-09 19:53 ` Jeff King
2013-09-08 8:38 ` [PATCH 4/5] config: make numeric parsing errors more clear Jeff King
2013-09-08 8:40 ` [PATCH 5/5] git-config: always treat --int as 64-bit internally Jeff King
2013-09-09 18:58 ` [PATCHv2 0/5] git-config and large integers Junio C Hamano
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