Problem with vi

[David Herron, NPR Lover]

Index: vi version 3.7, BRL-Unix Release 3 (Basically 4.2BSD)

Problem:  Encryption mode in vi is causing flaky behavior.

Description:  Our department secretaries use the Vax to type letters,
	etc, and get them typed out on the laser printer.  In this
	particular case, we have a copy of the CS101's first fall
	exam being prepared (And, of course, it's being kept encrypted).
	The file got up to around 700 lines yesterday, and all afternoon
	she was having problems with vi dying in different ways.

	The way it would always start is that part of the buffer would
	become "encrypted".  And vi would display those characters as
	the bare control characters.  (Normally, it translates them
	so printable sequences).  So this is what confused her at
	first, the cursor would jump around to a few strange places
	then settle down to yet another strange place.

	(Which I can re-create by encrypting a large file and
	editting it, or by encrypting a smaller file and editting
	THAT, and adding other files to it while in encryption).
	The files I was playing with were around 50 to 100 k size.

	I also got a core dump once.  Unfortunately there isn't
	a symbol table in /usr/ucb/vi so I wasn't able to get a
	stack trace.  I'll fix that shortly.  I also got a strange
	message out.  But I didn't have the presence of mind to
	write it down.  I looked through all the error messages
	in the source and didn't see anything that looked familiar.

	Any of this sound familiar??????


-- 
--- David Herron
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