ftfont_filter_properties  945 src/font.h     extern void ftfont_filter_properties (Lisp_Object, Lisp_Object);
ftfont_filter_properties  736 src/ftcrfont.c   .filter_properties = ftfont_filter_properties,
ftfont_filter_properties 3144 src/ftfont.c     .filter_properties = ftfont_filter_properties,
ftfont_filter_properties  780 src/xftfont.c      .filter_properties = ftfont_filter_properties,