Unexpected behavior with case insensitive completion under cygwin

Unexpected behavior with case insensitive completion under cygwin

[John Cooper]

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[I'm using zsh 4.2.0, compiled under a recent cygwin, on WinXP SP1]

Earlier in the week I was experiencing the following problem:

Run `zsh -f' followed by:
$ autoload -U compinit
$ compinit -C
$ ls c:/WIN<tab>    => c:/WINDOWS/
$ ls c:/win<tab>    => doesn't complete, as expected

$ zstyle ':completion:*' matcher-list 'm:{a-z}={A-Z}'

$ ls c:/WIN<tab>    => doesn't complete - is this a bug?
$ ls c:/win<tab>    => doesn't complete - is this a bug?

It also no longer completes when using the cygdrive prefix:

$ ls /cygdrive/c/WIN<tab>  => doesn't complete, but it did before the zstyle
command above.

Note however, that it will now complete case-insensitively when completing
relative paths:
$ cd c:/
$ ls WIN<tab>   => WINDOWS/
$ ls win<tab>   => WINDOWS/


I've spent quite a while trying various things, and found this morning that
the following will fix the problem:

$ zstyle ':completion:*:paths' accept-exact true

Now:
$ ls /cygdrive/c/win<tab>  => /cygdrive/c/WINDOWS/
$ ls c:/win<tab>  => c:/WINDOWS/



This is great, but can anyone explain what's going on?

Thanks,

John.

Re: Unexpected behavior with case insensitive completion under cygwin

[Peter Stephenson]

> This is great, but can anyone explain what's going on?

Unfortunately using matcher styles makes the already hard-to-understand
_path_files even more difficult.

You could try running ^x? (_complete_debug) in place of completion.
That will at least show you what it's executing.  Unfortunately the
output is likely to be the size of the telephone directory.

Have you tried setting the new option nocaseglob?

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR Ltd., Science Park, Milton Road,
Cambridge, CB4 0WH, UK                          Tel: +44 (0)1223 692070


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