X-Git-Url: http://git.chise.org/gitweb/?a=blobdiff_plain;f=APEL-ELS;h=4d637401207f512aebf1fd6bdd9196854090e95f;hb=ad3ba73586a7e06f1311726585c1e2c86995bda2;hp=4b931c2fb521f1b0e57f5148d7daf93f64655829;hpb=03739d5506e30d0d44b5f73f6a5b7c67835597a4;p=elisp%2Fapel.git

diff --git a/APEL-ELS b/APEL-ELS
index 4b931c2..4d63740 100644
--- a/APEL-ELS
+++ b/APEL-ELS
@@ -1,23 +1,43 @@
-;;; -*-Emacs-Lisp-*-
+;;; APEL-ELS --- list of APEL modules to install. -*-Emacs-Lisp-*-
 
-;; APEL-ELS: list of APEL modules to install
+;;; Commentary:
+
+;; APEL-MK imports `apel-modules' from here.
 
 ;;; Code:
 
-(setq apel-modules '(product apel-ver
-			     alist calist
-			     path-util filename install
-			     mule-caesar
-			     
+(defvar apel-modules '(product apel-ver
+			       alist calist path-util filename install
+			     ;; "mule-caesar" is version-dependent.
+			     ;; moved to EMU-ELS.
+			     ;; mule-caesar
+
 			     ;; [obsoleted modules] If you would like to
 			     ;; install following, please activate them.
-
 			     ;; atype file-detect
-			     ))
+			       ))
 
 (if (or (< emacs-major-version 19)
 	(and (eq emacs-major-version 19) (< emacs-minor-version 16)))
     (setq apel-modules (cons 'time-stamp apel-modules))
   )
 
+(condition-case nil
+    (let ((load-path (delete (expand-file-name ".")
+                             (copy-sequence load-path))))
+      ;; v18 does not have timezone.el.
+      (require 'timezone)
+      ;; Is timezone.el APEL version?
+      (if (product-find 'timezone)
+	  (error "timezone.el is APEL version. Install newer version."))
+      ;; Y2K test.
+      (or (string= (aref (timezone-parse-date "Sat, 1 Jan 00 00:00:00 GMT")
+                         0)
+                   "2000")
+	  (error "timezone.el has Y2K problem. Install fixed version."))
+      ;; another test here.
+      )
+  (error
+   (setq apel-modules (cons 'timezone apel-modules))))
+
 ;;; APEL-ELS ends here