glyphcache_underline
glyphcache_underline(&sc->sc_gc, x, y, attr);
glyphcache_underline(&sc->sc_gc, x, y, attr);
glyphcache_underline(&sc->sc_gc, x, y, attr);
glyphcache_underline(&sc->sc_gc, x, y, attr);
glyphcache_underline(&sc->sc_gc, x, y, attr);
glyphcache_underline(&sc->sc_gc, x, y, attr);
glyphcache_underline(gc, x, y, gc->gc_underline);
glyphcache_underline(gc, x, y, attr);
void glyphcache_underline(glyphcache *, int, int, long);