LFACE_UNDERLINE  3306 src/xfaces.c         old_value = LFACE_UNDERLINE (lface);
LFACE_UNDERLINE  4132 src/xfaces.c       value = LFACE_UNDERLINE (lface);
LFACE_UNDERLINE  5863 src/xfaces.c     if (UNSPECIFIEDP (LFACE_UNDERLINE (lface)))