Due to my mistake, I had overlooked the composition rules for the nasal vowels for the scripts which I had added.

Therefore I have attached a patch which will fix the problem.

Even though I did not notice the problem with the kaithi script, I have added the rule to that too.

I have also renamed "anusvara-candrabindu" as "nasal".

Steps to reproduce:

1. emacs -Q

2. Type:

     𑒅𑒿 𑒆𑓀
     𑆅𑇏 𑆏𑇏