How to confirm a TrueType PDF font is missing glyphs
问题 I have a PDF which renders fine in Acrobat but fails to print during the PDF to PS conversion process on our printer's RIP. After uncompressing with pdftk and editing I've found if I replace the usage of a certain font it will print. The font is a strange one, a TrueType subset with a single character (space). If I pass the PDF through Ghostscript it reports no errors, however an Acrobat pre-flight check will report a missing glyph for space. This error is not reported for the original file.