`mode-name' is no longer guaranteed to be a string.

69df9d6d · Glenn Morris · d92c6c85 · 69df9d6d
Commit 69df9d6d authored Feb 10, 2008 by Glenn Morris
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--- a/etc/NEWS
+++ b/etc/NEWS
@@ -471,6 +471,9 @@ checking/manipulating elements directly, use the new functions
 `byte-compile-warning-enabled-p', `byte-compile-disable-warning', and
 `byte-compile-enable-warning.'

+** `mode-name' is no longer guaranteed to be a string.
+Use `(format-mode-line mode-name)' to ensure a string value.
+

 * Lisp Changes in Emacs 23.1