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Message-ID:	<1de245fd-88e6-404b-b538-e31e7344ab92@maxrnd.com>
Date:	Mon, 29 Sep 2025 15:47:45 -0700
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Subject:	Re: sed in Cygwin 3.6.4 cannot handle Unicode characters beyond BMP
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From:	Mark Geisert via Cygwin <cygwin AT cygwin DOT com>
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Hello Mariusz,

On 9/26/2025 3:31 AM, Mariusz Wodzicki via Cygwin wrote:
> An example of the behavior:
> 
> echo "A" | sed "s/A/𝐀/g"
> 
> produces (in mintty and in Windows Terminal, both running bash)
> 
> sed: is_mb_char: mbrtowc (0x80) returned 3
> 
> My understanding is that this is due to the issue reported by Thomas Wolff
> on July 22:
> https://cygwin.com/pipermail/cygwin/2025-July/258513.html
> 
> Any news about when this bug in Cygwin 3.6.4 will be fixed?

It appears the original issue report by Thomas was never answered.
I will follow up on that email thread.

I cannot tell if the issue has been fixed in (the yet unreleased) 3.6.5 
but your example behaves correctly in test release 3.7.0-dev-139.
Thanks for the reminder!

..mark

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