On Wed, Sep 5, 2018 at 3:10 AM Werner LEMBERG <[email protected]> wrote:
>
> >> IMHO, there should be some default width for glyph having zero
> >> width.  What's your opinion?
> >
> > 1/2 ppem?

> Another suggestion: zero-width glyphs get a default spacing (say, the
> width of the space glyph), and are coloured.

0.5 Em is about the width of space but readily available. Color is ok.
I think "advance +1" is used to deal with this issue too, so it might
be removed.

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