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

[Eli Zaretskii]

> From: Visuwesh <visuweshm@gmail.com>
> Cc: 53729@debbugs.gnu.org
> Date: Fri, 18 Feb 2022 17:33:05 +0530
> 
> I have not tried reproducing it in other systems but I did try latest
> master, and the text is still not shaped.  However, I just noticed that
> I missed this warning message that was written to stdout (which is
> mostly why I did not notice it) when I close Emacs:
> 
>     Warning: Missing charsets in String to FontSet conversion
> 
> I tried quickly grepping for "Missing charsets" and "Warning: " in Emacs
> git repo but I don't see this particular warning in the results.

This is not an Emacs warning.  Searching for it on the Internet brings
these pages, please see if anything there is relevant to your setup:

  
https://www.ibm.com/support/pages/using-gui-results-missing-charsets-string-fontset-conversion-warning
  https://access.redhat.com/solutions/409033
  
https://superuser.com/questions/1531413/getting-warning-missing-charsets-in-string-to-fontset-conversion
  
https://gromnitsky.blogspot.com/2021/05/missing-charsets-in-string-to-fontset.html

After skimming those, it seems to be related to the X font setup, so
maybe it is relevant to the display problems you see.  Not sure.