adjust_overlays_for_insert  315 src/insdel.c     adjust_overlays_for_insert (from, to - from, before_markers);
adjust_overlays_for_insert  373 src/insdel.c     adjust_overlays_for_insert (from + old_chars, new_chars, true);
adjust_overlays_for_insert 4708 src/lisp.h     extern void adjust_overlays_for_insert (ptrdiff_t, ptrdiff_t, bool);
adjust_overlays_for_insert 4071 test/manual/etags/c-src/emacs/src/lisp.h extern void adjust_overlays_for_insert (ptrdiff_t, ptrdiff_t);