Re: bug#55745: [PATCH] Add support for the Hanifi Rohingya script

[Eli Zaretskii]

> From: समीर सिंह Sameer Singh <lumarzeli30@gmail.com>
> Date: Wed, 1 Jun 2022 17:54:24 +0530
> 
> Also, please help me with another problem, I cannot get Emacs to display 
> tamil supplement characters.

With which font?  And what do you mean by "I cannot"? what happens if
you try?

> I have tried adding tamil supplement codepoints to the (tamil) script of 
> (script-representative-chars) function
> in lisp/international/fontset.el

Does the font you use support those characters?  Does it support Tamil
in general?

> I also added the tamil supplement codepoints to the tamil composition rules.

Composition rules have no effect on whether a character is displayed
as a glyph or as "tofu".

> I even added a separate tamil-supplement script to 
> (script-representative-chars) but nothing worked.

There's no tamil-supplement script, though.

  (aref char-script-table #x11fc0) => tamil

See lisp/international/charscript.el, a generated file.

> How can I fix this?

We need first to understand the problem.

P.S. I've moved this discussion out of the bug report to emacs-devel.