gui_set_unsplittable 1690 src/frame.h    extern void gui_set_unsplittable (struct frame *, Lisp_Object, Lisp_Object);
gui_set_unsplittable 3122 src/haikufns.c     gui_set_unsplittable,
gui_set_unsplittable  973 src/pgtkfns.c      gui_set_unsplittable,	/* generic OK */
gui_set_unsplittable 10542 src/w32fns.c     gui_set_unsplittable,
gui_set_unsplittable 9824 src/xfns.c       gui_set_unsplittable,