From: Zoltan Hidvegi <hzoli@cs.elte.hu>
To: dunc@ucc.gu.uwa.edu.au (Duncan Sargeant)
Cc: zsh-workers@math.gatech.edu (Zsh workers list)
Subject: Re: Mailpath notification message
Date: Thu, 24 Oct 1996 11:37:46 +0200 (MET DST) [thread overview]
Message-ID: <199610240937.LAA23445@bolyai.cs.elte.hu> (raw)
In-Reply-To: <199610240841.QAA00731@mermaid.ucc.gu.uwa.edu.au> from Duncan Sargeant at "Oct 24, 96 04:41:16 pm"
Duncan Sargeant wrote:
> I usually overcome this problem by using $HOME in my scripts. I
> think this is a better way because you can put it in the middle of
> double-quote quoted strings (but not single quotes.)
>
> export MAILPATH="$HOME/mailspool/rusty:$HOME/Mail/z?Zsh mail."
>
> IMHO its a good habit to get into.
>
> better understand parameter expansion??
>
> echo $HOME "$HOME" '$HOME' ~ "~" '~'
>
> /home/wheel/dunc /home/wheel/dunc $HOME /home/wheel/dunc ~ ~
>
>
> PS: what was the rationale behind quoting tildes? Not critising
> it, but this means it isn't a short parameter ... so what is
> it?
Quoting rules are described quite precisely in POSIX which just documents
the usuall shell behaviour. Note that in a strict POSIX shell
export MAILPATH=~/mbox:~/Mail/zsh does not expand the tildes but zsh does
similarily to other shells (but bash/ksh/pdksh probably disables this
expansion when POSIXLY_CORRECT is set). The most portable is
MAILPATH=~/mbox:~/Mail/zsh ; export MAILPATH
About MAILPATH: bash does expand the mailpath component before checking the
file so in bash MAILPATH=~/mbox:~/Mail/zsh" works. However AT&T ksh, pdksh
and zsh does not do that.
Zoltan
parent reply other threads:[~1996-10-24 9:41 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <199610240841.QAA00731@mermaid.ucc.gu.uwa.edu.au>]
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