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Subject:	Re: Date field of ls -l command is garbled in latest cygwin1.dll snapshot.
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From:	Thomas Wolff <towo AT towo DOT net>
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Date:	Sun, 24 Jun 2018 18:34:06 +0200
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Am 24.06.2018 um 00:32 schrieb Thomas Wolff:
> Am 23.06.2018 um 20:46 schrieb Brian Inglis:
>> On 2018-06-22 17:06, Takashi Yano wrote:
>>> On Sat, 23 Jun 2018 05:39:27 +0900
>>> Takashi Yano wrote:
>>>> I looked into this problem, and found this is caused by incorrect
>>>> return value of iswprint().
>>> I have found the cause. That is, file categories.t is not correct.
>>>
>>> For example, http://ftp.unicode.org/Public/UNIDATA/UnicodeData.txt 
>>> says:
>>>
>>> 3400;<CJK Ideograph Extension A, First>;Lo;0;L;;;;;N;;;;;
>>> 4DB5;<CJK Ideograph Extension A, Last>;Lo;0;L;;;;;N;;;;;
>>> ...
>>> 4E00;<CJK Ideograph, First>;Lo;0;L;;;;;N;;;;;
>>> 9FEF;<CJK Ideograph, Last>;Lo;0;L;;;;;N;;;;;
>>>
>>> However, categories.t is:
>>>      {CAT_Lo, 0x3400, 0},
>>>      {CAT_Lo, 0x4DB5, 0},
>>> ...
>>>      {CAT_Lo, 0x4E00, 0},
>>>      {CAT_Lo, 0x9FEA, 0},
>>>
>>> Therefore, the script mkcategories which generates categories.t 
>>> should be fixed.
> Obviously. I will check why the script was failing here and thanks for 
> the patch already.
Yeah, I totally failed to consider the First...Last ranges in this 
script, how embarassing.
I would have chosen other markers than 0/1 for the two cases (maybe 
"firstlast" for the new one), and not put it in the middle, but you 
fixed it anyway; except for the Private Use ranges E000..F8FF, 
F0000..FFFFD, 100000..10FFFD, but their category Co isn't used anyway.
I suggest you submit your patch directly to cygwin-patches AT cygwin DOT com. 
One issue, though:
Apparently, you used a Unicode version other than 10.0 as a reference, 
probably 11.0. Maybe the fixing patch should be based on the same 
version, for better clarity and to reduce the diff (fewer changes in 
categories.t and none in caseconv.t).
We can update to 11.0 in addition, but:
Brian wrote:
>> These entries change with every Unicode release, and a new one came 
>> out a few
>> weeks ago, updated here yesterday.
The library updated to 11.0 is probably icu, which isn't used here. The 
libc generation scripts use the original Unicode files which are 
packaged in unicode-ucd which is still at 10.0.

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