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<div class="moz-cite-prefix">On 10/7/2020 14:50, Behdad Esfahbod
wrote:<br>
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<div dir="ltr">On Wed, Oct 7, 2020 at 3:35 PM Levantovsky,
Vladimir <<a
href="mailto:Vladimir.Levantovsky@monotype.com"
moz-do-not-send="true">Vladimir.Levantovsky@monotype.com</a>>
wrote:<br>
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<p class="MsoNormal"><span
style="font-size:11pt;font-family:Calibri,sans-serif">On
Wednesday, August 19, 2020 12:40 AM Behdad
Esfahbod wrote:<br>
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<p class="MsoNormal" style="margin-left:0.5in">Moreover,
I suggest CFF and CFF2 be removed from OFF. The
claim-to-superiority of CFF format is: 1. better
hinting, and 2. better compression. Re
better-hinting, the interpretation of CFF hints is
NOT specified anywhere.</p>
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<p> This frequently repeated argument for the removal of CFF/CFF2 is
lack of specification for how hints are used. <br>
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<p>I'm confused by this because it seems quite clear that
rasterization issues are not part of the MPEG-OTSPEC area of
responsibility.</p>
<br>
<p>The same suggestion could be made to remove TrueType
instructions because they are completely ignored or interpreted in
unspecified ways by major implementations. <br>
</p>
<p>I'm a retired rasterizer implementer with production code
experience for both TrueType and CFF. A skill clearly
underrepresented in these discussions.<br>
</p>
<p> Terence Dowling<br>
</p>
<br>
<p> P.S. It is worth noting that the hinting structure and general
information philosophy was publicly documented in 1990 <br>
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<p>see: <a class="moz-txt-link-freetext"
href="https://www.adobe.com/content/dam/acom/en/devnet/font/pdfs/T1_SPEC.pdf">https://www.adobe.com/content/dam/acom/en/devnet/font/pdfs/T1_SPEC.pdf</a>
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<p>It has been public for about 30 years.</p>
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cite="mid:CAF63+7WzGJrs70SvGvstB6gEwXYXomG9ARwJ6Dj6qJwrTrQdRw@mail.gmail.com">
<pre class="moz-quote-pre" wrap="">mpeg-otspec mailing list
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