>> I didn't trace through the code; do I need to do anything special
>> to enable those checksum tests?
>
> Assuming that the family name for subsetted fonts in PDF files is
> not reliable, you should temporarily set `face->family_name' to NULL
> so that the check for the font's family name is skipped, making the
> trickyness check rely on table checksums only.
Uh, oh, this isn't a helpful answer at all, sorry – you can't do that
before FreeType has loaded the face. To make `FT_Open_Face' skip the
family name test, I would have to add an FT_PARAM_TAG_TRICKY_CHECKSUMS
flag. This is not a big deal, but I wonder whether it really solves
your issue, so please do some experiments.
Werner
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