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Ligature issues. #19
Description
Defect Report
Noto fonts can be obtained from https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://fonts.google.com/noto/specimen/Noto%2BSans%2BTifinagh&ved=2ahUKEwjhx8_av96EAxXUhf0HHQLIA5kQFnoECBoQAQ&usg=AOvVaw2zS6-BLGqq9Rfa-rLX9wRM
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Title
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Font
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Where the font came from, and when
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Site: https://noto-website-2.storage.googleapis.com/pkgs/NotoSansArmenian-hinted.zip
Date: 2017-04-10 (preferred format)
Font Version
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- Linux -- use (Gnome) Font Viewer: open a font and click on Info tab.
OS name and version
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Application name and version
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Issue
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- Expected results
- Additional information
Unicode chart, technical specs, shaping info, comparison with non-Noto fonts, comparison with earlier version of the same font (regression cases)
Character data
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Screenshot
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Tools for reporting bugs
Harfbuzz hb-view and hb-shape
These are part of the HarfBuzz distribution and can help isolate if an issue is in the app/OS, shaping engine, or font.
- hb-view renders the text with the exact font (for example, to see how ligatured characters shape) using your installed version of HarfBuzz.
For example:
hb-view --font-file {path to font} --text-file {path to text file} --output-file '{sample}.png'
- hb-shape shows glyph selection and positioning
Fontview
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Fontdiff
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Activity
abdelhaqueidali commentedon Mar 24, 2024
For the previous ligature, it seems that right to left one is used instead of keeping it as it is for left to right. So it is mirrored in the new font while it is taken into consideration writing Left to right which is used for tifinagh now. Also some ligatures have some issues like ⵎ + ⴱ = ⵎ⵿ⴱ (looks exactly like ⴱ)
ⵔ+ⴱ = ⵔ⵿ⴱ (the letter ⵔ contains letter ⵀ inside instead of ⴱ) as you may know neo-tifinagh has used letter ⵀ for Yah instead of Yab. So letter Yab is ⴱ, therefore the ligature should use ⴱ regardless of old tifinagh usage of letter ⵀ in this ligature, because that letter ⵀ is no longer the letter yab, it is yah. that ligature should be used for ⵔ+ⵀ and for ⵔ+ⴱ the shape of letter ⴱ should be the one inside ⵔ
For ⵔ+ⴷ = ⵔ⵿ⴷ (letter ⴹ inside ⵔ) this legature should be resulted from ⵔ+ⴹ. And for the ⵔ+ⴷ it should give the letter ⴷ inside ⵔ this if there is a ligature for it.
[-]Hello, I found an issue with a ligature, it is mentioned in the file attached[/-][+]Ligature issues.[/+]