Placement of U+035F (Combining double macron below) needs correction

[adamiturabi]

It appears that the placement of U+035F (Combining double macron below) may need some correction. The example below shows the input sequence: t, U+035F, h:

There is too much space between the characters "th" and the macron. Also the macron juts out at the left.

However, with closer spacing, if the Latin character extends below the baseline, it will clash with the macron. I don't think that's too bad. Here is how the Brill typeface handles it:

Thank you for this great typeface!

[jvgaultney]

Thanks - it's difficult to make combining double diacritics work for all combinations without collisions, so we tend to place below ones low and above ones high. Horizontal positioning is also difficult when one of the two letters is significantly wider than the other, and the normal italic angle makes this example even worse. Improving this will take considerable work, so I can't guarantee we'll do it soon, but we'll add it to the queue.