Braille Character (Points 4, 5, 6) Alignment

[ghost]

Font: NotoSansSymbols-Regular.ttf Site: https://noto-website.storage.googleapis.com/pkgs/NotoSansSymbols-unhinted.zip Date: 2017-06-02 Version: 1.09 uh OS: Microsoft Windows 8.1 Software: Google Chrome 58.0.3029.110 (64-bit)

Issue: I linked to the Noto Sans Symbols file from an HTML page and set the font face of the page to Noto Sans Symbols. I wrote the following three Braille symbols: ⠿⠨⠿ (u283F, u2828, u283F). The expected result is to see two full cells (points 1-2-3-4-5-6) around two right-aligned points (points 4-6). The sequence, however, renders two left-aligned points (points 1-3), which is equivalent to ⠿⠅⠿ (u283F, u2805, u283F).

The top text is Arial and the bottom is the same text from Noto Sans Symbols.

[TidharC]

This is also reproducible with TextEdit on Mac.

[marekjez86]

u2828 and u2805 are currently identical in Symbols2 ; u2828 should be "mirror symmetric" to u2805

[roozbehp]

This apparently also happens with U+2808, U+2818, U+2838, etc basically making Noto unusable for Braille. Please fix.

[dougfelt]

So, the thing to do is look at https://github.com/googlei18n/noto-fonts-alpha/blob/master/from-pipeline/unhinted/ttf/sans/NotoSansSymbols2-Regular.ttf and see if this is still a problem there.

On Thu, Jul 27, 2017 at 10:46 AM, Roozbeh Pournader < notifications@github.com> wrote:

This apparently also happens with U+2808, U+2818, U+2838, etc basically making Noto unusable for Braille. Please fix.

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[marekjez86]

@waksmonskiMT : 2828 and 2805 are the same. 2828 should be symmetric to 2805 across the vertical axe.

Also bad: 2808, 2818, 2838, 2830, 28B8, 2898, 28A8, 2888, 2810, 28B0, 2890, 2820, 28A0, 2880

In summary: the most recent version of Symbols2 has the following Braille characters wrong: 2808, 2810, 2818, 2820, 2828, 2830, 2838, 2880, 2888, 2890, 2898, 28A0, 28A8, 28B0, 28B8

In general anything using only a subset of dots 4,5,6,8 is positioned incorrectly (it is located where dots 1,2,3,7 are).

Note there might be other Braille issues.

[marekjez86]

I also checked the source (to make sure that the incorrect characters are not result of the pipeline/fontmake problems). These issues are present in the source:

[marekjez86]

for the fixed fonts please see https://github.com/googlei18n/noto-fonts-alpha/blob/master/from-pipeline/unhinted/ttf/sans/NotoSansSymbols2-Regular.ttf