Long standing problem with Vedic tone markers and post-base visarga/anusvara

[Richard Wordingham via Unicode]

On Sat, 4 Jan 2020 22:15:59 +0000
James Kass via Unicode <unicode at unicode.org> wrote:

> For the Grantha examples above, Grantha (1) displays much better
> here. It seems daft to put a spacing character between a base
> character and any mark which is supposed to combine with the base
> character.

Although it's not related to this issue, that happens in the USE scheme.
It puts vowels before vowel modifiers, which has this problem if any of
the vowel modifiers precede a vowel in visual order, as happens in Thai
and closely related writing systems. 

Richard.