RE: Completion problems on cygwin when nocaseglob is set

["John Cooper" <John.Cooper@xxxxxxxxxx>]

Excellent - I can confirm "mkdir /c" does provide a workaround, and "ls
/c/<TAB>" now works.

However, with "setopt nocaseglob", I can no longer complete using "ls
c:/<TAB>" regardless of whether I "mount -c /" or "mount -c /cygdrive".
If I "setopt caseglob", I can then complete using "ls c:/<TAB>". This
again also used to work fine with "setopt nocaseglob" in zsh 4.2.6 (with
earlier cygwin library) on WinXP.

I've tried setting the following but they don't help:
$ zstyle 
fake-files
        :completion:* /:c /:d /:b /:o /:w /:r /:v
accept-exact
        :completion:*:paths c: d: b: o: w: r: v:


Btw, thanks very much for all the time you've spent looking into this.

    --- John.

-----Original Message-----
From: Peter Stephenson [mailto:pws@xxxxxxx] 
Sent: 23 October 2007 12:56
To: Zsh Users
Subject: Re: Completion problems on cygwin when nocaseglob is set

"John Cooper" wrote:
> Setting the fake-files zstyle doesn't help.

That's very strange, since that's got nothing to do with Cygwin and it
does work elsewhere.  But I can see that too, and I can see that
fake-files does produce files that actually aren't there (e.g. if I use
"/:a b c" I get a and b).  However, unfortunately the setting in
question
disappears into the horrors of compfiles.  This looks like a bug that
may or may not be associated with the other problems.

> "print /*" does not include "/c" after I "mount -c /" (I don't know
> whether it should?).

This is likely to be the cause of why this case is different (even if
the shell is doing something a bit weird, too).  If globbing can't see
it compfiles won't.  What's more, with this knowledge I can reproduce
your problem: I had a directory /c that I was using for mount c:
directly and with "cygpath -c /" this was appearing for globbing an the
completion system.  This gives a workaround, at least: "mkdir /c".

I can't see why /c wouldn't appear to globbing, but it doesn't in bash
either so presumably readdir() doesn't return it.  This is a question
for the Cygwin people.  Since, as you say

> If I "mount -c /cygdrive" then "print /*" includes "/cygdrive" (and
> completion works), and "print /cygdrive/*" lists all my mounted
drives.

this looks to me like a bug, or at the least a limitation of overlaying
the drives on an existing directory.

> However, with zsh 4.2.6 (and an earlier version of cygwin) on WinXP,
> "print /*" also does not include "/c", but completion works here.

I've no idea why this would be different.  None of the changes I can see
in compfiles look like they would make a difference.  It ought to be
possible (even easy, if you know how to do it) to add a special case so
that a statable file is always added as a match.  However, maybe it
should
be doing that anyway.  If anybody understood compfiles they might be
able to answer this.  I hesitate to do this without more thought.

It would help if I could debug this on a native Unix operating system.

-- 
Peter Stephenson <pws@xxxxxxx>                  Software Engineer
CSR PLC, Churchill House, Cambridge Business Park, Cowley Road
Cambridge, CB4 0WZ, UK                          Tel: +44 (0)1223 692070