font_prop_validate_spacing  558 src/font.c     static Lisp_Object font_prop_validate_spacing (Lisp_Object, Lisp_Object);
font_prop_validate_spacing  696 src/font.c         { SYMBOL_INDEX (QCspacing), font_prop_validate_spacing },
font_prop_validate_spacing 1158 src/font.c     	  val = font_prop_validate_spacing (QCspacing, val);
font_prop_validate_spacing 1245 src/font.c     	  val = font_prop_validate_spacing (QCspacing,