font_encode_char  276 src/font.c     static unsigned font_encode_char (Lisp_Object, int);
font_encode_char 2283 src/font.c     		      if (font_encode_char (font, XFIXNAT (XCAR (val2)))
font_encode_char 2295 src/font.c     		      if (font_encode_char (font, XFIXNAT (AREF (val2, i)))
font_encode_char 3754 src/font.c           if (font_encode_char (font_object, c) == FONT_INVALID_CODE)