bug#53729: 29.0.50; Tamil text not shaped in modeline

[Visuwesh]

[ Resending message since it didn't appear in the archives.  ]

Eli Zaretskii <eliz@gnu.org> writes:

Hello, Eli

>> From: Visuwesh <visuweshm@gmail.com>
>> Date: Wed, 02 Feb 2022 22:25:48 +0530
>> 
>> Tamil text is not shaped properly in the modeline.  Please view the
>> attached file "Noto_Serif_modeline.jpg" to see what I mean.  I set
>> "tamil" script to use "Noto Serif Tamil" in the default fontset like so,
>> 
>>     (set-fontset-font "fontset-default" 'tamil '("Noto Serif Tamil"
>> . "iso10646-1"))
>> 
>> Changing the font to "Lohit Tamil" [1] does not fix the shaping issue so
>> Noto Serif Tamil is not the problem (See file
>> "Lohit_Tamil_modeline.png").
>> 
>> As shown in "Noto_Serif_Expected.png", the text is shaped as I would
>> expect, in the minibuffer.
>
> on the mode line, the buffer is shown in bold, so perhaps there's a
> problem with the bold variant of the Noto Serif Tamil font?  If you
> type the same text in a buffer, but give it the 'bold' face, do you
> see the same problem with buffer text as on the mode line?

No, when I give it the bold face and insert it in a buffer, the text is
shaped properly.  Then, I tried setting mode-line-format to
"அக்கிச்சிறகுகள்" and '(:propertize "அக்கிச்சிறகுகள்" face bold) and in both
cases, the text is shaped properly.  I'm not sure where the problem is
anymore.  I attached screenshots of the same as well.

Bold_text.png
Description: Bold text in buffer and in modeline

Regular_text_modeline.png
Description: Non-bold in modeline