+2012-09-04 Lars Ingebrigtsen <larsi@gnus.org>
+
+ * eval.c (call_debugger): Make the function non-static so that we
+ can call it from set_message.
+
+ * xdisp.c (set_message): Implement the new variable `debug-on-message'.
+ (syms_of_xdisp): Defvar it and `inhibit-debug-on-message'.
+
2012-09-04 Paul Eggert <eggert@cs.ucla.edu>
Give more-useful info on a fatal error (Bug#12328).