FcBool xftCharExists(Display *dpy, XftFont *pub, FcChar32 ucs4);
void xftTextExtents8(Display *dpy, XftFont *pub,
_Xconst FcChar8 *string, int len, XGlyphInfo *extents);
FcBool xftCharExists(Display *dpy, XftFont *pub, FcChar32 ucs4);
void xftTextExtents8(Display *dpy, XftFont *pub,
_Xconst FcChar8 *string, int len, XGlyphInfo *extents);