I'm working on a document with diacritics. Everything was going well until I needed to use an Ḥ (H with a dot under) as a small capital for titles in the table of contents. These titles are set in small capitals.
At first, I thought that the font didn't have them. I spent quite some time looking for fonts that had support; I could not find any. I then decided to add them using Font Forge. After hunting for the Unicode address, I have come to the conclusion that this might not exist.
Case in point (XeLaTeX with Adobe Garamond Pro):
Is it true that Ḥ doesn't exist as a small capital?
I've checked the following: