* emacs-lisp/edebug.el (edebug-safe-prin1-to-string): Capture

	error from printing circular structures.

lisp/ChangeLog

+2005-12-17  Chong Yidong  <cyd@stupidchicken.com>
+
+	* emacs-lisp/edebug.el (edebug-safe-prin1-to-string): Capture
+	error from printing circular structures.
+
 2005-12-17  Martin Rudalics  <rudalics@gmx.at>  (tiny change)
 	* wid-edit.el (widget-checkbox-action): Clear undo info.

lisp/emacs-lisp/edebug.el

@@ -3711,7 +3711,9 @@ Return the result of the last expression."
 	(print-level (or edebug-print-level print-level))
 	(print-circle (or edebug-print-circle print-circle))
 	(print-readably nil)) ;; lemacs uses this.
-    (edebug-prin1-to-string value)))
+    (condition-case nil
+	(edebug-prin1-to-string value)
+      (error "#Apparently circular structure#"))))
 
 (defun edebug-compute-previous-result (edebug-previous-value)
   (if edebug-unwrap-results