bug#81487: problem rendering thai text from a utf8 input file

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> From: Keith Hill <[email protected]>
> Date: Mon, 27 Jul 2026 01:00:24 +0000
> 
> The problem I saw was with a TTY frame; it was invoked from an Msys2 MINGW64 shell via "emacs -nw". The
> code page was already 65001 & I think there's evidence of that in the mail I sent.  FWIW: cat and less both
> render this file as intended. I'll can't tell which font is used, but it looks the same as what one sees via cat the
> file.  The file is rendering fine until the Thai block is reached.  Originally, I saw this using Microsoft Terminal.
> Now I also can see it using Msys2's mingw64.exe shell launcher. 

Please try starting Emacs in Command Prompt window, not in MSYS Bash
window.

Also, please use "emacs -Q -nw", to disable any customizations you
might have that could affect this.