Re: [PATCH] hfsplus: fix decomposition of Hangul characters

[tchou <tchou@synology.com>]

Hi,

Ernesto A. Fernández 於 2018-08-24 02:29 寫到:
> Hi again:
> 
> On Mon, Nov 27, 2017 at 04:36:54PM -0300, Ernesto A. Fernández wrote:
>> It would be good to have some feedback on the use of code under the
>> Unicode License, I don't know if that can be a problem.
>> 
>> To Ting-Chang Hou: This patch is slightly different from the one you
>> tested with your mac. You are still tagged as Tested-by, but you may
>> want to check again that I have not broken anything.
>> 
>> Thanks,
>> Ernest
>> 
>> -- >8 --
>> Subject: [PATCH] hfsplus: fix decomposition of Hangul characters
>> 
>> Files created under macOS become essentially unusable under linux if
>> their names contain any Hangul, and vice versa.
>> 
>> This happens because the normalization of Hangul characters is a 
>> special
>> case: it can be done algorithmically, without need of a table. The
>> hfsplus module deals with Hangul correctly when composing, but
>> completely forgets about it when performing a decomposition.
>> 
>> Solve this by using the Hangul decomposition function provided in the
>> Unicode Standard. It's under the Unicode License, compatible with the
>> GPL.
>> 
>> This patch will cause trouble for Hangul filenames already created by
>> the module in the past. This shouldn't be a special concern because 
>> the
>> main purpose of the module was always sharing with macOS. If a user
>> actually needs to access such a file the nodecompose mount option 
>> should
>> be enough.
>> 
>> Reported-by: Ting-Chang Hou <tchou@synology.com>
>> Tested-by: Ting-Chang Hou <tchou@synology.com>
>> Signed-off-by: Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com>
>> 
> 
> It took a while but this patch has been merged now. Thanks again for 
> your
> report.

And thanks for your patch, too.

> 
> Ernest