From 6f1993df390517e34ddbeb5fa894e047a672e457 Mon Sep 17 00:00:00 2001
From: okada <okada>
Date: Sat, 19 Jan 2002 12:11:04 +0000
Subject: [PATCH] * wl-vars.el (wl-message-buffer-prefetch-depth): Default is
 3. wl.el (wl-check-variables): Rename from `wl-check-type'.
 (wl-check-variables-alist): Rename from
 `wl-check-type-variables'. (wl-check-variables-2): New
 function. (wl): Call `wl-check-variables-2'.

---
 wl/ChangeLog     |    8 ++++++++
 wl/wl-message.el |    1 +
 wl/wl-vars.el    |    2 +-
 wl/wl.el         |   19 +++++++++++++++----
 4 files changed, 25 insertions(+), 5 deletions(-)

diff --git a/wl/ChangeLog b/wl/ChangeLog
index 176ff94..e279c47 100644
--- a/wl/ChangeLog
+++ b/wl/ChangeLog
@@ -1,3 +1,11 @@
+2002-01-19  Kenichi OKADA  <okada@opaopa.org>
+
+	* wl-vars.el (wl-message-buffer-prefetch-depth): Default is 3.
+	wl.el (wl-check-variables): Rename from `wl-check-type'.
+	(wl-check-variables-alist): Rename from `wl-check-type-variables'.
+	(wl-check-variables-2): New function.
+	(wl): Call `wl-check-variables-2'.
+
 2002-01-19  Yoichi NAKAYAMA  <yoichi@eken.phys.nagoya-u.ac.jp>
 
 	* wl-fldmgr.el (wl-fldmgr-rename): Fixed around message appear
diff --git a/wl/wl-message.el b/wl/wl-message.el
index 26e1f51..ad257ce 100644
--- a/wl/wl-message.el
+++ b/wl/wl-message.el
@@ -559,6 +559,7 @@ Returns non-nil if bottom of message."
 		(when (sit-for wl-message-buffer-prefetch-idle-time)
 		  (wl-message-buffer-prefetch
 		   folder next count summary charset))
+	      (setq wl-message-buffer-prefetch-timer nil)
 	      (unless wl-message-buffer-prefetch-timer
 		(setq wl-message-buffer-prefetch-timer
 		      (run-with-idle-timer
diff --git a/wl/wl-vars.el b/wl/wl-vars.el
index fde78a9..34a99bf 100644
--- a/wl/wl-vars.el
+++ b/wl/wl-vars.el
@@ -1695,7 +1695,7 @@ e.x.
   :type '(repeat (regexp :tag "Folder Regexp"))
   :group 'wl-pref)
 
-(defcustom wl-message-buffer-prefetch-depth 5
+(defcustom wl-message-buffer-prefetch-depth 3
   "*Depth of buffer prefetch in summary mode."
   :type 'integer
   :group 'wl-pref)
diff --git a/wl/wl.el b/wl/wl.el
index 4aa2123..cb0315e 100644
--- a/wl/wl.el
+++ b/wl/wl.el
@@ -761,7 +761,7 @@ Entering Plugged mode calls the value of `wl-plugged-mode-hook'."
 	    (make-directory wl-temporary-file-directory)
 	  (error "Temp directory is not created"))))))
 
-(defconst wl-check-type-variables
+(defconst wl-check-variables-alist
   '((numberp . elmo-pop3-default-port)
     (symbolp . elmo-pop3-default-authenticate-type)
     (numberp . elmo-imap4-default-port)
@@ -770,8 +770,8 @@ Entering Plugged mode calls the value of `wl-plugged-mode-hook'."
     (numberp . wl-pop-before-smtp-port)
     (symbolp . wl-pop-before-smtp-authenticate-type)))
 
-(defun wl-check-type ()
-  (let ((type-variables wl-check-type-variables)
+(defun wl-check-variables ()
+  (let ((type-variables wl-check-variables-alist)
 	type)
     (while (setq type (car type-variables))
       (if (and (eval (cdr type))
@@ -783,6 +783,16 @@ Entering Plugged mode calls the value of `wl-plugged-mode-hook'."
 		 (eval (cdr type))))
       (setq type-variables (cdr type-variables)))))
 
+(defun wl-check-variables-2 ()
+  (if (< wl-message-buffer-cache-size 1)
+      (error "`wl-message-buffer-cache-size' must be larger than 0."))
+  (when wl-message-buffer-prefetch-depth
+    (if (not (< wl-message-buffer-prefetch-depth
+		wl-message-buffer-cache-size))
+	(error (concat
+		"`wl-message-buffer-prefetch-depth' must be smaller than "
+		"`wl-message-buffer-cache-size' - 1.")))))
+
 ;;;###autoload
 (defun wl (&optional arg)
   "Start Wanderlust -- Yet Another Message Interface On Emacsen.
@@ -805,7 +815,8 @@ If ARG (prefix argument) is specified, folder checkings are skipped."
 		(wl-check-environment arg)
 		(message "Checking environment...done")
 		(message "Checking type of variables...")
-		(wl-check-type)
+		(wl-check-variables)
+		(wl-check-variables-2)
 		(message "Checking type of variables...done")))
 	  (wl-plugged-init (wl-folder arg))
 	  (unless arg
-- 
1.7.10.4