Bug causes bomb in MacWrite 4.6

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Article #23776

#23776

From: Bill Lipa
Date: Thu, 07 Jan 1988 22:56

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I have here a true, repeatable bug in MacWrite 4.6, which abruptly intruded
on my existence when it ate 2 hours of work (I know, I know, save and make
backups). To cause a bomb, type "This is a piece of work". Move the insertion
point to the middle of this string and type "shoddy" before the word "piece".
Now, select Undo to remove the word "shoddy". Move the insertion point to the
LEFT using the ARROW KEYS. Select Redo to add the word "shoddy" again. Bombola.
Sometimes the bug does not cause a crash -- just do it a few more times and
it will, I swear. The mistake seems to be that moving the insertion keys with
the left and right arrows does not cause Undo to become Can't Undo, unlike
moving the insertion point with the mouse or the up and down arrows. This is
on a Mac Plus with MacWrite 4.6 and MultiFinder. If this is old hat, sorry.

Bill Lipa
Bitnet: p.priapus%macbeth@forsythe.stanford.edu
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From: P.PRIAPUS@MACBETH.STANFORD.EDU (Bill Lipa)
Newsgroups: comp.sys.mac
Subject: Bug causes bomb in MacWrite 4.6
Message-ID: <12364796688.311.P.PRIAPUS@MACBETH.STANFORD.EDU>
Date: 7 Jan 88 22:56:48 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
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