Khaled Hosny

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• Posts1
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• Re: Combining marks advance width

  Khaled Hosny

  September 2019
  FontForge will try to guess the GDEF glyph class and most of time it will correctly set mark class for mark glyphs. Some layout engines (e.g. Uniscribe and HarfBuzz) will zero the width of glyphs wi…
  2

• Re: Zero width joiner can be omitted from GSUB?

  Khaled Hosny

  September 2019
  HarfBuzz skips ZWJ and few other control code points (like soft hyphen) when applying GSUB lookups to better match the Unicode expected behavior. AFAIK no other commonly used layout engine does that.
  2

• Re: How many glyphs sequence can an OpenType lookup/feature include?

  Khaled Hosny

  September 2019
  You are probably pre-maturely optimizing here. Shaping is not usually that slow, even for relatively big paragraphs.Shaping a filewith 20574 words (one per line), using hb-shape utility from HarfBuzz…
  1

• Re: How many glyphs sequence can an OpenType lookup/feature include?

  Khaled Hosny

  September 2019
  See this discussion https://github.com/harfbuzz/harfbuzz/issues/1463
  1

• Re: Windows doesn't use bitmaps embedded in .TTF/.OTF (FontForge)

  Khaled Hosny

  September 2019
  My mistake. OTS silently drops the tables it does not support, so you want see anything in the console in this case.
  1

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