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Date: Mon, 14 Dec 2009 12:40:05 +0100
From: =?iso-8859-1?Q?J=F6rg?= Sommer <joerg@alea.gnuu.de>
To: zsh-workers@zsh.org
Subject: Re: [PATCH] run-help: ugly workaround for run-help-$X with alias
 for $X
Message-ID: <20091214114004.GA31015@alea.gnuu.de>
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Hi Peter,

Peter Stephenson <pws@csr.com> wrote:
> Index: Functions/Misc/run-help
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> RCS file: /cvsroot/zsh/zsh/Functions/Misc/run-help,v
> retrieving revision 1.16
> diff -u -r1.16 run-help
> --- Functions/Misc/run-help	5 Jun 2009 11:18:01 -0000	1.16
> +++ Functions/Misc/run-help	10 Dec 2009 09:48:44 -0000
> @@ -49,6 +49,7 @@
>    noalias=3D1
>  fi
> =20
> +{
>  while ((i++ < $#places))
>  do
>      what=3D$places[$i]
> @@ -56,7 +57,8 @@
>      builtin print -r $what
>      case $what in
>      (*( is an alias)*)
> -	[[ ${what[(w)6]:t} !=3D ${what[(w)1]} ]] && run-help ${what[(w)6]:t}
> +	[[ ${what[(w)6]:t} !=3D ${what[(w)1]} ]] &&
> +	  run_help_orig_cmd=3D${what[(w)1]} run-help ${what[(w)6]:t}

> +} always {
> +  unset run_help_orig_cmd
> +}

Why do you need the unset here? In Posix shell an expression =E2=80=9CVAR=
=3Dxy
cmd=E2=80=9D exports the variable VAR only to the command cmd, but doesn't =
export
or set it in the current environment. I zsh different here?

Bye, J=C3=B6rg.
--=20
IRC: Der [Prof. Andreas Pfitzmann, TU Dresden] hat gerade vorgeschlagen, sie
  sollen doch statt Trojanern die elektromagnetische Abstrahlung nutzen. Das
  sei nicht massenf=C3=A4hig, ginge ohne Eingriff ins System, sei zielgeric=
htet,
  und, der Hammer, das funktioniere ja bei Wahlcomputern schon sehr gut.

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