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Date:	Thu, 05 Jul 2001 11:25:15 +0200
To:	"Andrej Borsenkow" <Andrej DOT Borsenkow AT mow DOT siemens DOT ru>, <cygwin AT cygwin DOT com>
From:	Michael Schaap <cygwin AT mscha DOT com>
Subject:	RE: Zsh observations
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At 07:59 5-7-2001, Andrej Borsenkow wrote:
>Zsh relies on system execve to find command. Basically, it does
>
>for dir in path
>   execve dir/cmd
>
>until it succeeds. We recently have a brief discussion on zsh-workers about
>it. Irrespectivley if you consider it a bug or feature this was around for a
>very long time. So the above lets suspect problem in Cygwin exec - sometimes
>it fails to execute /a/hello.exe. Can you reliably reproduce it?

Yes, I've figured it out.
It only happens when "setopt correct" is set, the first instance of a file 
in the PATH has a .exe extension, and the second doesn't.  Here's how to 
reproduce it.

I created an executable /tmp/a/dummy.exe which prints "a", and a script 
"/tmp/b/dummy" which prints "b".

Move all zsh initialisation files (/etc/z* and ~/.z*) away, and open a new 
zsh window.

Now type:
         % PATH=/usr/bin:/tmp/a:/tmp/b
         % dummy
         a

Open a new zsh window, and type:
         % PATH=/usr/bin:/tmp/a:/tmp/b
         % setopt correct
         % dummy
         b

Conclusion: don't use "setopt correct" under Cygwin. :-(

  - Michael


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