Bug in vi-applet: ZZ command does not recognize read-only files

[Bernhard Fischer]

On Mon, Mar 27, 2006 at 08:36:43AM -0500, Paul Fox wrote:
> > 
> > When I open a file in vi and modify it in the buffer (although it's
> > readonly) and afterwards try to save it using the ":wq" command, I get
> > the error message that the file is read-only. If I do ":wq!", I get
> > another error message from the write command itself that the file can't
> > be written, so far so good.
> > 
> > When I do the same with the "ZZ" command (which should be an equivalent
> > to :wq or :x) I don't get an error message that the file is not
> > writable, vi simply quits and returns 0 to the shell and makes me think
> > that everything is ok.
>
>i'll take a look at this.  when i fixed the read-only behavior of
>:wq last year, i didn't notice that ZZ had the same problem.
>
>i'll look at your ":wn" as well.

I rediffed the :wn patch (see patch #1) and corrected the :version
command (see patch #2) here:
http://busybox.net/lists/busybox/2006-March/019494.html

Please apply if you think it makes sense, TIA.

PS: perhaps it would make sense to convert the other strncasecmp to the
expanded checks as the latter did produce slightly smaller code for me
(see numbers in the mail above).