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. - Derek On Fri, 24 May 2024 16:28:12 +0000 Honnesh Ramachandra <hramachan...@adobe.com> wrote: > Hello, > > This issue relates to PDF specification and its usage of CFF based > embedded fonts for it Type0 fonts. For Type0 fonts containing > CID-keyed descendant CFF-based fonts, the glyph index is the CID > present in the content stream. As a result, there is no requirement > for a ‘cmap’ table to be present in the font since the glyph indices > are derived directly from the CIDs. FreeType 2.13.2 throws an error > when it doesn’t find a ‘cmap’ table for such an Open Type font > containing CFF outlines. I suggest relaxing this requirement for a > ‘cmap’ table for such fonts. I have attached my suggested fix with > this email. For legal reasons, I have not attached the embedded font > that encounters this problem. Here is a diff to highlight the > proposed change > > [A screenshot of a computer Description automatically generated] > > Thank you for your time and consideration. > > Honnesh Ramachandra
