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Subject:	Re: /bin/ls -l cannot handle printable Unicode characters outside the
	BMP ...
To:	cygwin AT cygwin DOT com
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Date:	Sat, 23 Nov 2024 15:01:47 +0100
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From:	Christian Franke via Cygwin <cygwin AT cygwin DOT com>
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Cedric Blancher via Cygwin wrote:
> On Sat, 23 Nov 2024 at 11:44, Cedric Blancher <cedric DOT blancher AT gmail DOT com> wrote:
>> Good morning!
>>
>> /bin/ls -l cannot handle printable Unicode characters outside the BMP
>>
>> Example using '𝒯'
>> bash -c 'printf "\U0001D4AF\n"' # MATHEMATICAL SCRIPT CAPITAL T
>> (yes, our mathematicians want to use THAT as file name)
>>
>> On Linux:
>> LC_ALL=en_US.UTF-8 bash -c 't="$(printf "\U0001D4AF\n")" ; touch "$t" "$t$t"'
>> ls -la
>> total 8
>> -rw-r--r--  1 ced staden  0 Nov 23 11:29 ΓΆΓΆΓΆΓΆΓΆΓΆΓΆ
>> -rw-r--r--  2 ced staden  4 Nov 23 11:31 𝒯
>> -rw-r--r--  2 ced staden  4 Nov 23 11:31𝒯𝒯
>>
>> On Cygwin:
>> LC_ALL=en_US.UTF-8 bash -c 't="$(printf "\U0001D4AF\n")" ; touch "$t" "$t$t"'
>> $ ls -la
>> -rw-r--r-- 1 ced staden  0 Nov 23 11:29  ΓΆΓΆΓΆΓΆΓΆΓΆΓΆ
>> -rw-r--r-- 2 ced staden  4 Nov 23 11:31 ''$'\360\235\222\257'
>> -rw-r--r-- 2 ced staden  4 Nov 23 11:31 ''$'\360\235\222\257\360\235\222\257'
>>
>> Looks like the Cygwin locale has a problem with non-BMP chars.
> find(1) is even worse:
> $ find .
> .
> ./ΓΆΓΆΓΆΓΆΓΆΓΆΓΆ
> ./????
> ./x??x
>
> The Microsoft Explorer GUI shows the file names correctly, so IMO this
> is not a Windows or Win32 API problem.

Slightly different filename problem which may be related or not:
https://sourceware.org/pipermail/cygwin/2024-September/256451.html

-- 
Regards,
Christian


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