From: James Kass (thunder-bird@earthlink.net)
Date: Fri Aug 24 2007 - 11:10:20 CDT
Mark Davis wrote,
>A similar annoyance is the fact that so many fonts don't map the
>default-ignorable code points (like variation selectors) to a zero-width
>invisible glyph by default.
It's up to individual font developers to weigh the pros and cons
of including control picture glyphs for such characters, as it
should be.
Mapping characters like VS to zero-width no outline glyphs would
mean, for one thing, that applications which give the user the
option of displaying control characters (and related items) would
not be able to get appropriate outlines for such characters from
the font. Opinions on this differ, as discussed on this list in years
past.
If an OpenType font supports a sequence which involves a VS, the
user won't see the control picture. If the font doesn't support
the particular sequence, it can be helpful if that is reflected in
the display.
Best regards,
James Kass
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