On Fri, 31 May 2024 22:57:30 -0400 Alexei Podtelezhnikov <apodt...@gmail.com> wrote:
> Derek, > > On Fri, May 31, 2024 at 2:23 PM Derek B. Noonburg > <der...@glyphandcog.com> wrote: > > For what it's worth, I've encountered the same problem in a few PDF > > files. In all the cases I've seen, the OpenType file contains just > > the 'CFF ' table. My code checks for a missing 'head' table, and in > > that case it extracts the CFF blob and handles it as a CFF (not > > OpenType) font. > > > > I haven't run into a font that has 'head' and 'CFF ', but not > > 'cmap'. If that's what you have, it would be a problem for my code, > > too. > > Please leave a comment at > https://gitlab.freedesktop.org/freetype/freetype/-/issues/1278 > If you can attach an example PDF file with such font. It'd be even > better if you proposed an MR. I only have a couple example files, and they were both received from customers under NDA, unfortunately. I can extract a font if you're interested, but I don't think that will really prove anything to you. It looks like some software (my sample files are ~10 years old) decided to wrap a CFF font into an sfnt structure, with the single 'CFF ' table, and call it an OpenType font. I see a lot of dodgy fonts in PDF files; I imagine you have similar stories as a FreeType maintainer... For the record, I don't consider this particular case a FreeType bug, but rather a bug in the PDF file. I added the workaround in my Xpdf code long ago. - Derek
