[HarfBuzz] Windows 10 monbaiti.ttf upgrade (5.01 -> 5.51) caused loss of diacritical marks when shaped with harfbuz

[Roozbeh Pournader]

Would you please file a bug at https://github.com/behdad/harfbuzz/issues?
That would make sure we don't lose it. Thanks in advance!

On Fri, Dec 4, 2015 at 9:14 AM, Tom Hindle <tom_hindle at sil.org> wrote:

> Hi,
>
> I noticed in windows 10 that when using System Mongolian Baiti Font, text
> shaping via harfbuz (seen in firefox + chrome) no longer displayed the dots
> bellow the words.
>
> Tested using hg-view.exe using harfbuz 1.1.2
>
> Attached pngs of output from hb-view using both the windows 10 font (5.51)
> and the windows 7 font (5.01).
>
>
> hb-view.exe Windows7Font_monbaiti.ttf --text-file=Mongolian.txt
> outtput-format=png --output-file=file-monbaiti_5.01-harfbuzz-1.1.2.png
>
> hb-view.exe Windows10Font_monbaiti.ttf --text-file=Mongolian.txt
> outtput-format=png --output-file=file-monbaiti_5.51-harfbuzz-1.1.2.png
>
> Installing the Windows 7 font on windows 10 fixed the behavior in harfbuz
> based application (eg. firefox).
>
> Windows 10's IE (11) + Edge both displayed the dots regardless of which
> font was used.
>
> Thanks
> Tom
>
>
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>
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