Write load-history into etc/fns-VERSION.el, then clear it.

diff --git a/lisp/loadup.el b/lisp/loadup.el
index cbc1ba5c314a31c3ff7bc48961cfc461ff886a24..79b812c2ba393c9b3834fd0ce15903bb79eddb03 100644 (file)
--- a/lisp/loadup.el
+++ b/lisp/loadup.el
@@ -209,6 +209,27 @@
 ;;;See also "site-load" above.
 (load "site-init" t)
 (setq current-load-list nil)
+
+;; Write the value of load-history into etc/LOADHIST.el,
+;; the clear out load-history.
+(let ((buffer-undo-list t))
+  (princ "(setq load-history\n" (current-buffer))
+  (princ "      (nconc load-history\n" (current-buffer))
+  (princ "             '(" (current-buffer))
+  (let ((tem load-history))
+    (while tem
+      (prin1 (car tem) (current-buffer))
+      (terpri (current-buffer))
+      (if (cdr tem)
+         (princ "               " (current-buffer)))
+      (setq tem (cdr tem))))
+  (princ ")))" (current-buffer))
+  (write-region (point-min) (point-max)
+               (expand-file-name (format "fns-%s.el" emacs-version)
+                                 data-directory))
+  (erase-buffer))
+(setq load-history nil)
+
 (garbage-collect)
 
 ;;; At this point, we're ready to resume undo recording for scratch.