Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10 beta 3/9/83; site mot.UUCP
Path: utzoo!utcs!mnetor!mot!al
From: al@mot.UUCP (Al Filipski)
Newsgroups: net.bugs
Subject: In vi, ZZ is not :wq
Message-ID: <269@mot.UUCP>
Date: Fri, 13-Sep-85 16:53:06 EDT
Article-I.D.: mot.269
Posted: Fri Sep 13 16:53:06 1985
Date-Received: Fri, 13-Sep-85 20:24:34 EDT
References: <2073@ukma.UUCP> <153@chinet.UUCP>, <572@baylor.UUCP>
Organization: Motorola Microsystems, Phoenix AZ
Lines: 34

*
In "Re: Re: Vi isn't nasty enough, so user looses lines", there is the
exchange:
> 
> > ZZ is shorthand for :wq
> > :wq means write it out & quit
> 
> ZZ is shorthand for :x<CR>
> 
ZZ is NOT equivalent to either :wq or :x on our System V.2 vi,
but differs from the latter two (which seem to be equivalent) in
an insidious way. For example, for an existing file foo,

vi foo
<change some things>
:w bar
ZZ

does NOT cause the changes to be written to foo.  However,

vi foo
<change some things>
:w bar
:wq

DOES. ZZ apparently tries to be smart and avoid unnecessary writes,
but I would expect it to write the file being edited in the case 
above. A bug, I'd call it.

--------------------------------
Alan Filipski, UNIX group, Motorola Microsystems, Tempe, AZ U.S.A
{seismo|ihnp4}!ut-sally!oakhill!mot!al
ucbvax!arizona!asuvax!mot!al
--------------------------------