Re: Font Problems

[Eric Mader <mader jtcsv com>]

At 12:08 PM 8/23/2002, Owen Taylor wrote:
> How is an "empty LangSys" represented in a font? I'm not opposed
> to adding in some sort of tolerance if it's pretty clean, but if
> there is a LangSys pointing off the end of the font or something,
> then I think we should definitely refuse to load the font.
>
> In general, I think we should be strict about validation of fonts
> until we actually have reports about production fonts that are
> causing problems ... otherwise, we are just encouraging (in a small
> way) such broken fonts.

In this particular font, it had a default LangSys with no features, and the 
LangSys count was zero. So, one could argue that this is well formed, but 
just useless. (I guess it's a stub left around by an early version of some 
font building tool...) My patch just skips over the offending script and 
continues to read the other one, which is fine. (It will reject the font if 
there are *no* vaild scripts.)

I don't have a stong feeling about this one way or the other, so I'm OK 
with not including the patch.


> Regards,
>                                         Owen

Regards,
Eric