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Re: [ft-devel] merged CFF and Type1 hinting code now in master

From: Nikolaus Waxweiler
Subject: Re: [ft-devel] merged CFF and Type1 hinting code now in master
Date: Mon, 20 Nov 2017 21:20:43 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0

Blue zones are simply a declaration of font properties that the
designer specifies.  It is up to the hint interpreter to decide how
to use that data.  For example, there is a heuristic in the Adobe
CFF interpreter that synthesizes charstring hints from blue zone

Very interesting!  This is exactly what Nikolaus proposes, too.  Can
you provide some details?

This would also help with fonts that have incomplete hints, like the URW fonts shipping with Ghostscript. They have blue zones and hints, just... not everywhere they need to be. Some figures in Nimbus Sans and the rest of the family miss hints at the top of glyphs, which currently messes with hinting.

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