Question

I am using the below elisp code to modify incoming messages from ERC

(defun my-modify (msg)
  (replace-regexp-in-string "abc" "xyz" msg))
(add-hook 'erc-insert-modify-hook 'my-modify)

I am getting the following error

error in process filter: Wrong number of arguments: (lambda (msg) 
(replace-regexp-in-string "abc" "xyz" msg)), 0

Answer 1

I am not sure what’s wrong in my previous code, but I was able to modify incoming messages using this code (from http://mwolson.org/projects/emacs-config/erc-init.el)

(defun my-modify (proc parsed)
  (let ((msg (erc-response.contents parsed)))
    (when (stringp msg)
      (setf (erc-response.contents parsed)
            (erc-replace-regexp-in-string "abc" "xyz" msg))
      nil)))
(add-hook 'erc-server-PRIVMSG-functions 'my-modify)

This works as expected, but what I really wanted was to strip away a particular nick and display only the message. However I don’t think that’s possible at ERC level. Rather I will have to try it at the buffer level.