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Re: [Bug-wget] wget IRI test failures on Mac OS X

From: Ryan Schmidt
Subject: Re: [Bug-wget] wget IRI test failures on Mac OS X
Date: Thu, 12 May 2016 23:52:08 -0500

On Sep 24, 2009, at 5:24 PM, Ryan Schmidt wrote:

> On Sep 24, 2009, at 12:57, Micah Cowan wrote:
>> It looks like the troubles your experiencing are due to the fact that
>> the Wget tests assume that the filesystem can take any arbitrary set of
>> bytes, and will store them as they were given. This is apparently not
>> the case for Mac OS, and I should probably have known better than to
>> assume it would be a universal case. Ryan, can you please confirm for me
>> that this is indeed what's happening?
> Basically yes. It's a feature of the HFS Plus volume format, which is the 
> default volume format on Mac OS since before Mac OS X.
> http://developer.apple.com/mac/library/technotes/tn/tn1150.html#HFSPlusNames
> "HFS Plus stores strings fully decomposed and in canonical order."
> http://developer.apple.com/mac/library/technotes/tn/tn1150.html#CanonicalDecomposition
> "HFS Plus defines that Unicode strings will be stored in fully decomposed 
> form, with composing characters stored in canonical order. The other 
> equivalent forms are illegal in HFS Plus strings. An implementation must 
> convert these equivalent forms to the fully decomposed form before storing 
> the string on disk."

Hello, just wanted to gently remind you that this bug in the wget test suite 
running on OS X that I reported in 2009 with wget 1.12 still exists today with 
wget 1.17.1.

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