Order of stacked diacritics with U+035F (Combining double macron below)

[adamiturabi]

Here is the input sequence: d, U+035F, U+0323, h

It is displayed thus:

I believe U+0323 (combining dot below) should be centered under U+035F (Combining double macron below), thus:

Thank you for your great work with this typeface.

[jvgaultney]

Thanks - we'll look in this.

[jvgaultney]

What typeface is your example of correct rendering in?

[jvgaultney]

There's a complicated technical explanation for why that sequence (0064 035F 0323 0068) doesn't work. During Unicode normalization, adjacent diacritics are sorted by their canonical combining order. In this and many similar cases the CCC value for the diacritic dot is less than that of the bridging macron, so the order becomes 0064 0323 035F 0068 which places the dot under the d and then the bridging macron under that, which is not what is wanted.

The proper solution - according to Unicode - is to place a Combining Grapheme Joiner (U+034F) between the two diacritics (0064 035F 034F 0323 0068). The CGJ interrupts the canonical sorting and retains the bridge and diacritic in the desired order.

Unfortunately this correct sequence using the CGJ doesn't currently work in our v6 fonts. The dot is centered, but appears above, not below the macron.

I'll be working to fix this in the next version.

(I'm still really curious what font you're using to produce the correct rendering from 0064 035F 0323 0068)

[adamiturabi]

Apologies for the late reply. I've gone through my notes but unfortunately I don't seem to remember how I came up with that rendering. I may have created it by moving around pixels in Paint. I'll try to update this if I'm able to remember. Thanks for your work on the update.