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From: bak@csd-v.UUCP (Bruce A. Kern)
Newsgroups: comp.unix.questions,comp.bugs.sys5
Subject: Re: vi `ei:' (`modeline')
Keywords: vi passwd lookout
Message-ID: <176@csd-v.UUCP>
Date: 9 Oct 88 02:36:55 GMT
References: <3394@dunkshot.mips.COM> <1235@cbnews.ATT.COM> <13215@hqda-ai.ARPA> <13905@mimsy.UUCP>
Reply-To: bak@csd-v.UUCP (000-Bruce A. Kern)
Organization: Computer Systems Design, Sandy Hook, Ct.
Lines: 35

>In article <13215@hqda-ai.ARPA> jay@hqda-ai.ARPA (Jay Hiser) writes:
>>... but SysV vi has an interesting bug/feature that can cause a problem.
>>
	[description of modeline follows...]
>
>Now, the code that checks for `mode lines' is rather sloppy.  Not only
>does it match on `ex' and `vi', it also matches on `ei' and `vx'.  And
>in 4.2BSD (and perhaps some SysV releases---no telling which ones since
>the release numbering is so bizarre) you cannot turn it off!  More modern
>Domain:	chris@mimsy.umd.edu	Path:	uunet!mimsy!chris

Just a note to report that the entire feature seems to be absent in
the Microport V/AT 2.3-U version of vi.  Executing

:set all

inside vi reports nothing about a [no]modeline option and editing the
following file:

0
ex:% s/0/abc/
1
2
3
4
ex:% s/0/abc/

produces nothing interesting.


-- 
Bruce A. Kern                                  1-203-270-0399 
Computer Systems Design                        Voice: 730 - 1700 Mon. thru Fri.
29 High Rock Road                              Data:  All other times  
Sandy Hook, Ct.  06482