[PATCH] w3m-search POST support

[Yuya Nishida <yuya@xxxxxxx>]

雄也と申します．

Amazon の検索を emacs-w3m でしたいので，
POST メソッドを使う検索エンジンに対応させてみました．
もしよろしければ取り込んで下さい．

このパッチでは w3m-search.el の w3m-search-engine-alist で
POST-DATA の指定を省略可能にするために
customize では sexp として設定するようになっています．
string 風に設定を行えるようにしたかったのですが，
うまい方法が思いつきませんでした．

---
Yuya.Nishida.
http://www.j96.org/~yuya/

Index: w3m-search.el
===================================================================
RCS file: /storage/cvsroot/emacs-w3m/w3m-search.el,v
retrieving revision 1.34
diff -u -r1.34 w3m-search.el
--- w3m-search.el	8 Jan 2004 15:39:32 -0000	1.34
+++ w3m-search.el	31 Mar 2004 03:43:29 -0000
@@ -116,13 +116,18 @@
 	 "http://dictionary.goo.ne.jp/cgi-bin/dict_search.cgi?MT=%s&sw=2";
 	 euc-japan)
 	("eiei"
-	 "http://www.dictionary.com/cgi-bin/dict.pl?term=%s&r=67";)))
+	 "http://www.dictionary.com/cgi-bin/dict.pl?term=%s&r=67";)
+	("amazon"
+	 "http://www.amazon.co.jp/exec/obidos/search-handle-form/250-7496892-7797857";
+	 nil
+	 "url=index=blended&search-type=quick-search&field-keywords=%s")))
   "*An alist of search engines.
-Each element looks like (ENGINE ACTION CODING)
+Each element looks like (ENGINE ACTION CODING POST-DATA)
 ENGINE is a string, the name of the search engine.
 ACTION is a string, the URL that performs a search.
 ACTION must contain a \"%s\", which is substituted by a query string.
 CODING is optional value which is coding system for query string.
+POST-DATA is optional value which is a string for POST method search engine.
 If omitted, `w3m-default-coding-system' is used.
 "
   :group 'w3m
@@ -130,7 +135,8 @@
 	  (group :indent 2
 		 (string :format "Engine: %v\n" :size 0)
 		 (string :format "       Action: %v\n" :size 0)
-		 (coding-system :format "%t: %v\n" :size 0))))
+		 (coding-system :format "%t: %v\n" :size 0)
+		 (sexp :format "     PostData: %v\n"))))
 
 (defcustom w3m-search-default-engine "google"
   "*Name of the default search engine.
@@ -200,9 +206,14 @@
   (unless (string= query "")
     (let ((info (assoc search-engine w3m-search-engine-alist)))
       (if info
-	  (w3m-goto-url
-	   (format (cadr info)
-		   (w3m-search-escape-query-string query (caddr info))))
+	  (let ((query-string (w3m-search-escape-query-string query
+							      (caddr info)))
+		(post-data (cadddr info)))
+	    (w3m-goto-url
+	     (format (cadr info) query-string)
+	     post-data
+	     nil
+	     (and post-data (format post-data query-string))))
 	(error "Unknown search engine: %s" search-engine)))))
 
 ;;;###autoload