Use erc-display-message instead of erc-make-notice

* lisp/erc/erc-backend.el (erc-server-JOIN): Let `erc-display-message'
handle formatting instead of baking out a string.  The text ultimately
inserted remains unchanged, but forwarding the original `format-spec'
arguments now has the side effect of influencing text properties, which
conveys richer meaning for modules to act upon when doing things like
deciding whether to hide a given message.
* lisp/erc/erc.el (erc-cmd-IGNORE, erc-cmd-UNIGNORE,
erc--unignore-user, erc-cmd-IDLE, erc-cmd-BANLIST, erc-cmd-MASSUNBAN):
Use `erc-display-message' with `notice' for the TYPE parameter instead
of composing `erc-make-notice' and `erc-display-line'.

lisp/erc/erc-backend.el

@@ -164,7 +164,6 @@
 (declare-function erc-is-message-ctcp-p "erc" (message))
 (declare-function erc-log-irc-protocol "erc" (string &optional outbound))
 (declare-function erc-login "erc" nil)
-(declare-function erc-make-notice "erc" (message))
 (declare-function erc-network "erc-networks" nil)
 (declare-function erc-networks--id-given "erc-networks" (arg &rest args))
 (declare-function erc-networks--id-reload "erc-networks" (arg &rest args))
@@ -1718,7 +1717,7 @@ add things to `%s' instead."
       (if (string-match "^\\(.*\\)\^g.*$" chnl)
           (setq chnl (match-string 1 chnl)))
       (save-excursion
-        (let* ((str (cond
+        (let ((args (cond
                      ;; If I have joined a channel
                      ((erc-current-nick-p nick)
                       (let ((erc--display-context
@@ -1735,18 +1734,15 @@ add things to `%s' instead."
                         (erc-channel-begin-receiving-names))
                       (erc-update-mode-line)
                       (run-hooks 'erc-join-hook)
-                      (erc-make-notice
-                       (erc-format-message 'JOIN-you ?c chnl)))
+                      (list 'JOIN-you ?c chnl))
                      (t
                       (setq buffer (erc-get-buffer chnl proc))
-                      (erc-make-notice
-                       (erc-format-message
-                        'JOIN ?n nick ?u login ?h host ?c chnl))))))
+                      (list 'JOIN ?n nick ?u login ?h host ?c chnl)))))
           (when buffer (set-buffer buffer))
           (erc-update-channel-member chnl nick nick t nil nil nil nil nil host login)
           ;; on join, we want to stay in the new channel buffer
           ;;(set-buffer ob)
-          (erc-display-message parsed nil buffer str))))))
+          (apply #'erc-display-message parsed 'notice buffer args))))))
 
 (define-erc-response-handler (KICK)
   "Handle kick messages received from the server." nil

lisp/erc/erc.el

@@ -3609,16 +3609,14 @@ If no USER argument is specified, list the contents of `erc-ignore-list'."
             (run-at-time timeout nil
                          (lambda ()
                            (erc--unignore-user user buffer))))
-          (erc-display-line
-           (erc-make-notice (format "Now ignoring %s" user))
-           'active)
+          (erc-display-message nil 'notice 'active
+                               (format "Now ignoring %s" user))
           (erc-with-server-buffer (add-to-list 'erc-ignore-list user))))
     (if (null (erc-with-server-buffer erc-ignore-list))
-        (erc-display-line (erc-make-notice "Ignore list is empty") 'active)
-      (erc-display-line (erc-make-notice "Ignore list:") 'active)
+        (erc-display-message nil 'notice 'active "Ignore list is empty")
+      (erc-display-message nil 'notice 'active "Ignore list:")
       (mapc (lambda (item)
-              (erc-display-line (erc-make-notice item)
-                             'active))
+              (erc-display-message nil 'notice 'active item))
             (erc-with-server-buffer erc-ignore-list))))
   t)
 
@@ -3632,9 +3630,8 @@ If no USER argument is specified, list the contents of `erc-ignore-list'."
           (unless (y-or-n-p (format "Remove this regexp (%s)? "
                                     ignored-nick))
             (setq ignored-nick nil))
-        (erc-display-line
-         (erc-make-notice (format "%s is not currently ignored!" user))
-         'active)))
+        (erc-display-message nil 'notice 'active
+                             (format "%s is not currently ignored!" user))))
     (when ignored-nick
       (erc--unignore-user user (current-buffer))))
   t)
@@ -3642,9 +3639,8 @@ If no USER argument is specified, list the contents of `erc-ignore-list'."
 (defun erc--unignore-user (user buffer)
   (when (buffer-live-p buffer)
     (with-current-buffer buffer
-      (erc-display-line
-       (erc-make-notice (format "No longer ignoring %s" user))
-       'active)
+      (erc-display-message nil 'notice 'active
+                           (format "No longer ignoring %s" user))
       (erc-with-server-buffer
         (setq erc-ignore-list (delete user erc-ignore-list))))))
 
@@ -4129,12 +4125,10 @@ See `erc-cmd-WHOIS' for more details."
                             (string-to-number
                              (cl-third
                               (erc-response.command-args parsed)))))
-                       (erc-display-line
-                        (erc-make-notice
+                       (erc-display-message nil 'notice origbuf
                          (format "%s has been idle for %s."
                                  (erc-string-no-properties nick)
                                  (erc-seconds-to-string idleseconds)))
-                        origbuf)
                        t)))
                   'erc-server-317-functions)
             symlist)
@@ -4683,8 +4677,7 @@ The ban list is fetched from the server if necessary."
 
     (cond
      ((not (erc-channel-p chnl))
-      (erc-display-line (erc-make-notice "You're not on a channel\n")
-                        'active))
+      (erc-display-message nil 'notice 'active "You're not on a channel\n"))
 
      ((not (get 'erc-channel-banlist 'received-from-server))
       (let ((old-367-hook erc-server-367-functions))
@@ -4703,9 +4696,8 @@ The ban list is fetched from the server if necessary."
           (erc-server-send (format "MODE %s b" chnl)))))
 
      ((null erc-channel-banlist)
-      (erc-display-line (erc-make-notice
-                         (format "No bans for channel: %s\n" chnl))
-                        'active)
+      (erc-display-message nil 'notice 'active
+                           (format "No bans for channel: %s\n" chnl))
       (put 'erc-channel-banlist 'received-from-server nil))
 
      (t
@@ -4719,10 +4711,9 @@ The ban list is fetched from the server if necessary."
                    "%-" (number-to-string (/ erc-fill-column 2)) "s"
                    "%" (number-to-string (/ erc-fill-column 2)) "s")))
 
-        (erc-display-line
-         (erc-make-notice (format "Ban list for channel: %s\n"
-                                  (erc-default-target)))
-         'active)
+        (erc-display-message
+         nil 'notice 'active
+         (format "Ban list for channel: %s\n" (erc-default-target)))
 
         (erc-display-line separator 'active)
         (erc-display-line (format fmt "Ban Mask" "Banned By") 'active)
@@ -4739,8 +4730,7 @@ The ban list is fetched from the server if necessary."
             'active))
          erc-channel-banlist)
 
-        (erc-display-line (erc-make-notice "End of Ban list")
-                          'active)
+        (erc-display-message nil 'notice 'active "End of Ban list")
         (put 'erc-channel-banlist 'received-from-server nil)))))
   t)
 
@@ -4754,9 +4744,7 @@ Unban all currently banned users in the current channel."
     (cond
 
      ((not (erc-channel-p chnl))
-      (erc-display-line
-       (erc-make-notice "You're not on a channel\n")
-       'active))
+      (erc-display-message nil 'notice 'active "You're not on a channel\n"))
 
      ((not (get 'erc-channel-banlist 'received-from-server))
       (let ((old-367-hook erc-server-367-functions))