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From: Kyle Jones <kyle_jones@wonderworks.com>
To: xemacs-beta@xemacs.org
Subject: 20.0: recipe for extent_changed_for_redisplay crash

This is a recipe for the crash that causes
extent_changed_for_redisplay to recurse until XEmacs exceeds its
stacksize resource limit.

$ xemacs -nw -q -l ./crash

where ./crash contains

(switch-to-buffer (get-buffer-create "ook"))
(insert "abcdefg")
(setq e (make-extent 1 4))
(set-extent-property e 'face 'bold)
(set-extent-property e 'duplicable t)
(set-extent-property e 'replicating t)
(insert (buffer-string))
(delete-region 8 9)

