Taco Hoekwater wrote:
That one doesn't actually work (it is never called). There are
interesting issues when it comes to the timing of this, and that made
me stop when I first looked at it (seems like a long time ago).
The original goal of this callback was to provide a method to create
missing glyphs on the fly, but it was surprisingly hard to find the
right time to do that check.
Just after hyphenation and before the kerning/ligaturing step would
be a good moment, but since those are all callbacks now themselves,
maybe I should just forget about char_exists completely.
if i remember right we dropped the idea char_exists in favour of the
ability to add (virtual) characters to a font (only once per char) but
we put than wish on the long term wishlist
Hans
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Hans Hagen | PRAGMA ADE
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