From: Mark Wooding <mdw@distorted.org.uk>
Date: Wed, 22 Jan 2014 15:56:32 +0000 (+0000)
Subject: dot/ercrc.el: Function for looking for things in alists by regexps.
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/profile/commitdiff_plain/1cf7ff229a7c7f2fb9e9c543a3dfbe5889ce7ff0?ds=sidebyside;hp=-c

dot/ercrc.el: Function for looking for things in alists by regexps.

We'll want more of these later.
---

1cf7ff229a7c7f2fb9e9c543a3dfbe5889ce7ff0
diff --git a/dot/ercrc.el b/dot/ercrc.el
index 5b573e0..9ed001a 100644
--- a/dot/ercrc.el
+++ b/dot/ercrc.el
@@ -50,12 +50,20 @@ (defun mdw-define-bot-greeting (server bot greeting)
 		       :test #'string= :key #'car))))
 (load "~/.erc-auth.el")
 
+(defun mdw-assoc-regexp (regexp alist)
+  "Return the association in ALIST whose car matches REGEXP."
+  (let ((answer nil))
+    (dolist (l alist)
+      (when (string-match (car l) regexp)
+	(setq answer l)))
+    answer))
+
 (defun mdw-erc-auto-greet-bots (server nick)
   "Send greeting message to bots."
-  (dolist (l mdw-erc-auto-greet-bots-alist)
-    (when (string-match (car l) server)
-      (let ((bot (cadr l))
-	    (message (caddr l)))
+  (let ((a (mdw-assoc-regexp server mdw-erc-auto-greet-bots-alist)))
+    (when a
+      (let ((bot (cadr a))
+	    (message (caddr a)))
 	(erc-server-send (concat "PRIVMSG " bot " :" message))))))
 (add-hook 'erc-after-connect 'mdw-erc-auto-greet-bots)