Be safer about "%" in message formats

* lisp/calc/calc-store.el (calc-copy-special-constant):
* lisp/net/rcirc.el (rcirc-handler-PART, rcirc-handler-KICK):
* lisp/org/org-agenda.el (org-agenda):
* lisp/org/org-clock.el (org-clock-out, org-clock-display):
* lisp/org/org.el (org-refile):
* lisp/progmodes/ada-xref.el (ada-goto-declaration):
* lisp/progmodes/idlwave.el (idlwave-scan-library-catalogs):
Don’t trust arbitrary strings to not contain "%" or "`" in
(message (concat STRING1 STRING2 ...)).

lisp/calc/calc-store.el

@@ -405,8 +405,8 @@
                                     sconst))))
        (if var
            (let ((msg (calc-store-value var value "")))
-             (message (concat "Special constant \"%s\" copied to \"%s\"" msg)
-                      sconst (calc-var-name var)))))))))
+	     (message "Special constant \"%s\" copied to \"%s\"%s"
+		      sconst (calc-var-name var) msg))))))))
 
 (defun calc-copy-variable (&optional var1 var2)
   (interactive)

lisp/net/rcirc.el

@@ -2685,7 +2685,7 @@ the only argument."
 (defun rcirc-handler-PART (process sender args _text)
   (let* ((channel (car args))
 	 (reason (cadr args))
-	 (message (concat channel " " reason)))
+	 (message "%s %s" channel reason))
     (rcirc-print process sender "PART" channel message)
     ;; print in private chat buffer if it exists
     (when (rcirc-get-buffer (rcirc-buffer-process) sender)
@@ -2697,7 +2697,7 @@ the only argument."
   (let* ((channel (car args))
 	 (nick (cadr args))
 	 (reason (nth 2 args))
-	 (message (concat nick " " channel " " reason)))
+	 (message "%s %s %s" nick channel reason))
     (rcirc-print process sender "KICK" channel message t)
     ;; print in private chat buffer if it exists
     (when (rcirc-get-buffer (rcirc-buffer-process) nick)

lisp/org/org-agenda.el

@@ -2882,13 +2882,12 @@ Pressing `<' twice means to restrict to the current subtree or region
 	     (let* ((m (org-agenda-get-any-marker))
 		    (note (and m (org-entry-get m "THEFLAGGINGNOTE"))))
 	       (when note
-		 (message (concat
-			   "FLAGGING-NOTE ([?] for more info): "
-			   (org-add-props
-			       (replace-regexp-in-string
-				"\\\\n" "//"
-				(copy-sequence note))
-			       nil 'face 'org-warning)))))))
+		 (message "FLAGGING-NOTE ([?] for more info): %s"
+			  (org-add-props
+			   (replace-regexp-in-string
+			    "\\\\n" "//"
+			    (copy-sequence note))
+			   nil 'face 'org-warning))))))
 	 t t))
        ((equal org-keys "#") (call-interactively 'org-agenda-list-stuck-projects))
        ((equal org-keys "/") (call-interactively 'org-occur-in-agenda-files))

lisp/org/org-clock.el

@@ -1622,9 +1622,10 @@ to, overriding the existing value of `org-clock-out-switch-to-state'."
 						"\\>"))))
 		  (org-todo org-clock-out-switch-to-state))))))
 	  (force-mode-line-update)
-	  (message (concat "Clock stopped at %s after "
-			   (org-duration-from-minutes (+ (* 60 h) m)) "%s")
-		   te (if remove " => LINE REMOVED" ""))
+	  (message (if remove
+		       "Clock stopped at %s after %s => LINE REMOVED"
+		     "Clock stopped at %s after %s")
+		   te (org-duration-from-minutes (+ (* 60 h) m)))
 	  (run-hooks 'org-clock-out-hook)
 	  (unless (org-clocking-p)
 	    (setq org-clock-current-task nil)))))))
@@ -1925,13 +1926,14 @@ Use `\\[org-clock-remove-overlays]' to remove the subtree times."
 		    nil 'local))))
     (let* ((h (/ org-clock-file-total-minutes 60))
 	   (m (- org-clock-file-total-minutes (* 60 h))))
-      (message (concat (format "Total file time%s: "
-			       (cond (todayp " for today")
-				     (customp " (custom)")
-				     (t "")))
-		       (org-duration-from-minutes
-			org-clock-file-total-minutes)
-		       " (%d hours and %d minutes)")
+      (message (cond
+		(todayp
+		 "Total file time for today: %s (%d hours and %d minutes)")
+		(customp
+		 "Total file time (custom): %s (%d hours and %d minutes)")
+		(t
+		 "Total file time: %s (%d hours and %d minutes)"))
+	       (org-duration-from-minutes org-clock-file-total-minutes)
 	       h m))))
 
 (defvar-local org-clock-overlays nil)

lisp/org/org.el

@@ -11878,7 +11878,8 @@ prefix argument (`C-u C-u C-u C-c C-w')."
 	    (when (featurep 'org-inlinetask)
 	      (org-inlinetask-remove-END-maybe))
 	    (setq org-markers-to-move nil)
-	    (message (concat actionmsg " to \"%s\" in file %s: done") (car it) file)))))))
+	    (message "%s to \"%s\" in file %s: done" actionmsg
+		     (car it) file)))))))
 
 (defun org-refile-goto-last-stored ()
   "Go to the location where the last refile was stored."

lisp/progmodes/ada-xref.el

@@ -1133,8 +1133,7 @@ If OTHER-FRAME is non-nil, display the cross-reference in another frame."
 	(ada-find-in-ali identlist other-frame)
       ;; File not found: print explicit error message
       (ada-error-file-not-found
-       (message (concat (error-message-string err)
-			(nthcdr 1 err))))
+       (message "%s%s" (error-message-string err) (nthcdr 1 err)))
 
       (error
        (let ((ali-file (ada-get-ali-file-name (ada-file-of identlist))))

lisp/progmodes/idlwave.el

@@ -5588,7 +5588,7 @@ be set to nil to disable library catalog scanning."
 	     (mapcar 'car idlwave-path-alist)))
 	  (old-libname "")
 	  dir-entry dir catalog all-routines)
-      (if message-base (message message-base))
+      (if message-base (message "%s" message-base))
       (while (setq dir (pop dirs))
 	(catch 'continue
 	  (when (file-readable-p
@@ -5603,8 +5603,7 @@ be set to nil to disable library catalog scanning."
 		     message-base
 		     (not (string= idlwave-library-catalog-libname
 				   old-libname)))
-		(message "%s" (concat message-base
-				      idlwave-library-catalog-libname))
+		(message "%s%s" message-base idlwave-library-catalog-libname)
 		(setq old-libname idlwave-library-catalog-libname))
 	      (when idlwave-library-catalog-routines
 		(setq all-routines
@@ -5618,7 +5617,7 @@ be set to nil to disable library catalog scanning."
 		       (setq dir-entry (assoc dir idlwave-path-alist)))
 	      (idlwave-path-alist-add-flag dir-entry 'lib)))))
       (unless no-load (setq idlwave-library-catalog-routines all-routines))
-      (if message-base (message (concat message-base "done"))))))
+      (if message-base (message "%sdone" message-base)))))
 
 ;;----- Communicating with the Shell -------------------