IBM Plex Sans Arabic supports Central Kurdish, but the shape of digit 2 does not match the form normally used in Sorani Kurdish.
CLDR uses the arab numbering system for ckb, so the Sorani digits are U+0660–U+0669. That makes digit two:
٢ — U+0662 ARABIC-INDIC DIGIT TWO
The character already exists in IBM Plex Sans Arabic. The issue is the glyph shape, not Unicode coverage.
Comparison
Two widely used Kurdish fonts, Rudaw and NRT, both encode the Sorani digit two as U+0662 and draw it using the Kurdish form.
I checked the font files directly:
Rudaw:
U+0662 → uni0662
U+06F2 → not present
NRT:
U+0662 → uni0662
U+06F2 → not present
IBM Plex Sans Arabic:
U+0662 → uni0662
The difference is visible in the glyphs:
Rudaw
NRT
IBM Plex Sans Arabic
It would be great if Plex could provide the Sorani form of U+0662 when the language is Central Kurdish (ckb), presumably through the appropriate OpenType language-specific localization.
Real-world usage
IBM Plex Sans Arabic is already used in high-visibility Sorani Kurdish products, including:
Kurdistan Regional Government Services The main public services portal for the Kurdistan Regional Government
AVA Media The largest Sorani Kurdish TV and media networks
This means Central Kurdish content is already being published at scale with IBM Plex Sans Arabic, so improving the Sorani digit forms would have an immediate real-world impact.
There is also an existing broader issue about Central Kurdish support: #597.
A related Noto discussion exists around the Kurdish form of digit two in notofonts/arabic#273, although that issue discusses U+06F2. In practice, CLDR and the Rudaw/NRT fonts above use U+0662 for Central Kurdish.
References
IBM Plex Sans Arabic supports Central Kurdish, but the shape of digit 2 does not match the form normally used in Sorani Kurdish.
CLDR uses the
arabnumbering system forckb, so the Sorani digits areU+0660–U+0669. That makes digit two:The character already exists in IBM Plex Sans Arabic. The issue is the glyph shape, not Unicode coverage.
Comparison
Two widely used Kurdish fonts, Rudaw and NRT, both encode the Sorani digit two as
U+0662and draw it using the Kurdish form.I checked the font files directly:
The difference is visible in the glyphs:
Rudaw
NRT
IBM Plex Sans Arabic
It would be great if Plex could provide the Sorani form of
U+0662when the language is Central Kurdish (ckb), presumably through the appropriate OpenType language-specific localization.Real-world usage
IBM Plex Sans Arabic is already used in high-visibility Sorani Kurdish products, including:
Kurdistan Regional Government Services The main public services portal for the Kurdistan Regional Government
AVA Media The largest Sorani Kurdish TV and media networks
This means Central Kurdish content is already being published at scale with IBM Plex Sans Arabic, so improving the Sorani digit forms would have an immediate real-world impact.
There is also an existing broader issue about Central Kurdish support: #597.
A related Noto discussion exists around the Kurdish form of digit two in notofonts/arabic#273, although that issue discusses
U+06F2. In practice, CLDR and the Rudaw/NRT fonts above useU+0662for Central Kurdish.References
ckb) uses thearabnumbering system