Subject: bug#33729: 27.0.50; Partial glyphs not rendered for Gujarati with Harfbuzz enabled (renders fine using m17n)

From: Eli Zaretskii <[email-masked]>
Date: Fri, 14 Dec 2018 07:57:55 +0200

> From: Kaushal Modi <[email-masked]>
> Date: Thu, 13 Dec 2018 15:43:50 -0500
> Cc: [email-masked], [email-masked], [email-masked]
> 
>  For debugging the such rendering differences, the actual font used by
>  Emacs for a given part of the text need to be known,
> 
> I am using Mukta Vaani font for Gujarati. It is a free font and be downloaded from
> https://ektype.in/mukta-vaani.html.

Your data indicates that the m17n build performs character composition
at buffer position 34, whereas the harfbuzz build does not.  The
question is why.