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Re: archiving report
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Re: archiving report


  • Subject: Re: archiving report
  • From: "Gerriet M. Denkmann" <email@hidden>
  • Date: Wed, 27 Feb 2013 12:13:43 +0700

On 27 Feb 2013, at 07:20, Graham Cox <email@hidden> wrote:

>
> On 27/02/2013, at 5:56 AM, Gerriet M. Denkmann <email@hidden> wrote:
>
>> I have filed the $null bug. Got back as duplicate with a very low id-number. Meaning: this bug is known to Apple since several years. Still no fix.
>
>
> Frustrating for sure, but in this particular case, I wonder whether there even is a fix that would remain forward and backward compatible.

Well, there is a fix. I have a version of NSKeyedUnarchiver which works perfectly (getting nil for nil and "$null" for "$null"). So the data format produced by NSKeyedArchiver seems to be ok. No compatibility problems backward or forward.

And the result of a better NSKeyedArchiver (which wastes less space) is still readable by the current NSKeyedUnarchiver - again no  compatibility problems.

>
> It sounds like the design was signed off either without considering that case [...]

No. The design of the NSKeyedArchiver data format is perfectly sound (although slightly redundant). NSKeyedUnarchiver just fails to understand it.

Kind regards,

Gerriet.

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References: 
 >archiving report (From: "Gerriet M. Denkmann" <email@hidden>)
 >Re: archiving report (From: Gwynne Raskind <email@hidden>)
 >Re: archiving report (From: "Gerriet M. Denkmann" <email@hidden>)
 >Re: archiving report (From: Graham Cox <email@hidden>)

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