(minibuffer-message): Make sure we can put-text-property.

2 files changed, 6 insertions, 2 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index c6102575cf6..cc9ee1d1f7a 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,5 +1,7 @@
 2008-04-14  Stefan Monnier  <monnier@iro.umontreal.ca>
 
+        * minibuffer.el (minibuffer-message): Make sure we can put-text-property.
+
         * emacs-lisp/crm.el: Complete rewrite.
 
         * tmm.el (tmm-completion-delete-prompt): Don't hardcode point-min==1.
diff --git a/lisp/minibuffer.el b/lisp/minibuffer.el
index 7429af3248d..2fec4238230 100644
--- a/lisp/minibuffer.el
+++ b/lisp/minibuffer.el
@@ -172,8 +172,10 @@ Enclose MESSAGE in [...] if this is not yet the case.
 If ARGS are provided, then pass MESSAGE through `format'."
   ;; Clear out any old echo-area message to make way for our new thing.
   (message nil)
-  (unless (and (null args) (string-match "\\[.+\\]" message))
-    (setq message (concat " [" message "]")))
+  (setq message (if (and (null args) (string-match "\\[.+\\]" message))
+                    ;; Make sure we can put-text-property.
+                    (copy-sequence message)
+                  (concat " [" message "]")))
   (when args (setq message (apply 'format message args)))
   (let ((ol (make-overlay (point-max) (point-max) nil t t)))
     (unwind-protect