Strange effect under 3.1.1

Strange effect under 3.1.1

[Helmut Jarausch]

Hi,

I just noticed a very strange effect after having switched to 3.1.1 .
Please tell, what's going on here.
Thanks,
Helmut Jarausch.


I have a symbolic link   /bin/shell  ->  /bin/zsh

This script works as expected

With fileA
#!/bin/zsh
echo $ZSH_VERSION
echo $argv[-1]

fileA 1 2 3
prints (as expected)

3.1.1
3


BUT  with
fileB
#!/bin/shell
echo $ZSH_VERSION
echo $argv[2]

fileB 1 2 3
prints (not so expected)

3.1.1
[-1]               <====================== what's going on here ?



--
Helmut Jarausch
Lehrstuhl f. Numerische Mathematik
Institute of Technology
RWTH Aachen
D 52056 Aachen, Germany

Re: Strange effect under 3.1.1

[Zefram]

Helmut Jarausch wrote:
>I have a symbolic link   /bin/shell  ->  /bin/zsh

When zsh is invoked as "shell" -- or anything else starting with "s" --
it emulates the POSIX shell.

-zefram

Re: Strange effect under 3.1.1

[Juergen Christoffel]

   From: Zoltan Hidvegi <hzoli@cs.elte.hu>
   Date: Mon, 3 Feb 1997 21:07:10 +0100 (MET)

   > When zsh is invoked as "shell" -- or anything else starting with "s" --
   > it emulates the POSIX shell.

   Yes.  I should have mentioned this change, sorry.  Now the emulation
   mode is determined after examining the first letter of the name used
   to invoke zsh.

Hmm, may I ask what's the rationale to use only the first letter to
make that decision? 

Just imagine a poor unsuspecting soul who links his zsh to something
like coolsh and then wonders what has happened to his shell... 

It shouldn't be too costly to compare the whole name after the last /
on startup, or would it?

	--jc

Re: Strange effect under 3.1.1

[Zefram]

Zoltan Hidvegi wrote:
>If the first letter is c, csh emulation options are used,

Perhaps 't' (for tcsh) should also be added.

-zefram

Re: Strange effect under 3.1.1

[Zoltan Hidvegi]

> When zsh is invoked as "shell" -- or anything else starting with "s" --
> it emulates the POSIX shell.

Yes.  I should have mentioned this change, sorry.  Now the emulation
mode is determined after examining the first letter of the name used
to invoke zsh.  If the first letter is s or b zsh enters sh emulation
mode..  Perhaps p should be added to this list (some systems use psh
for POSIX shell).

If the first letter is k, ksh emulation is turen on.

If the first letter is c, csh emulation options are used, otherwise it
uses native mode.

Zoltan