[HarfBuzz] Don't render control characters?

Behdad Esfahbod behdad at behdad.org
Wed Mar 5 15:04:30 PST 2014

Any objection to not rendering Unicode GC=Cc, same way that we don't render
Default_Ignorables?  That's the U+0000..001F and U+007F and U+0080..U+009F
ones.  In Chromium that would save us some trouble as currently we have to
rewrite those to make sure we don't get any glyph for them.


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