KEDEBIDERI – Incorrect rendering of Beria Erfe combining diacritics (macron, dot above and grave accent)

Describe the bug

Beria Erfe characters containing combining diacritical marks are not rendered correctly in the Google Fonts specimen.

The problem affects three groups of combining marks:

1. Combining Macron (U+0304)

𖺠̄ 𖺣̄ 𖺯̄ 𖺧̄ 𖺶̄

2. Combining Dot Above (U+0307)

𖺠̇ 𖺣̇ 𖺧̇ 𖺶̇ 𖺯̇

3. Combining Grave Accent (U+0300)

𖺠̀ 𖺣̀ 𖺧̀ 𖺯̀ 𖺶̀

These diacritical marks are essential components of Beria orthography. They distinguish different vowel sounds and linguistic features and must be correctly displayed.

As shown in the attached screenshots, some combinations produce incorrect glyphs, missing-character symbols or improperly rendered characters.

To Reproduce

1. Open the font specimen page on Google Fonts.
2. Navigate to the Specimen section.
3. Paste or enter Beria Erfe text containing the combinations listed above.
4. Observe how the characters are displayed.
5. Repeat the test with the different combining marks.

Expected behavior

All Beria Erfe characters should render correctly with their respective combining diacritical marks.

Specifically:

• Combining macrons should appear correctly positioned above their base characters.
• Combining dots should be properly positioned and visually distinguishable.
• Combining grave accents should appear correctly above their respective characters.
• All combinations should be rendered as complete characters without missing-glyph symbols, replacement characters or unintended spacing.

The font should support proper Unicode combining-mark behavior, including correct mark positioning and anchor attachment.

Screenshots

Two screenshots are attached:

• Screenshot 1: Google Fonts specimen showing the rendering problem.
• Screenshot 2: Comparison showing the intended appearance of the Beria Erfe characters and their diacritics.

Additional context

Beria (also known as Zaghawa) is a language spoken primarily in Chad and Sudan.

Its writing system uses the Beria Erfe script, and accurate representation of its characters is important for digital literacy, education, documentation and language preservation.

The affected characters are not decorative variations. The combining marks carry linguistic information and are necessary for correct written communication.

We would appreciate an investigation and correction of the font's Unicode combining-mark support, particularly the glyph positioning and rendering of these specific combinations.

Thank you for helping improve support for Beria Erfe and its digital accessibility.