If rinohtype doesn't yet implement support for an OpenType table format, exit with a more informative message. For substitution tables, we could also ignore them but issue a warning to the user that the particular font will lack (some) glyph substitutions.
If rinohtype doesn't yet implement support for an OpenType table format, exit with a more informative message. For substitution tables, we could also ignore them but issue a warning to the user that the particular font will lack (some) glyph substitutions.