hashfn_user_defined 5320 src/fns.c            testdesc.hashfn = hashfn_user_defined;
hashfn_user_defined 4028 src/lisp.h     Lisp_Object hashfn_user_defined (Lisp_Object, struct Lisp_Hash_Table *);
hashfn_user_defined 2654 src/pdumper.c    if (h->test.hashfn == hashfn_user_defined)