From: Bart Schaefer <schaefer@brasslantern.com>
To: Zsh-workers <zsh-workers@sunsite.dk>
Subject: Re: Regexp replace on all arguments.
Date: Sat, 11 Feb 2006 19:20:04 +0000 [thread overview]
Message-ID: <1060211192004.ZM6032@candle.brasslantern.com> (raw)
In-Reply-To: <20060211182105.GA7789@lxlabs.com>
On Feb 11, 11:51pm, Ligesh wrote:
> Subject: Re: Regexp replace on all arguments.
>
> On Sat, Feb 11, 2006 at 05:38:19PM +0000, Stephane Chazelas wrote:
> > winexec() {
> > local cmd=$1
> > shift || return
> > argv=("${@//#\/(#b)([a-zA-Z])\//$match:}")
> > "$cmd" "$@"
> > }
> >
>
> I couldn't get it to work. There is no substitution happening at all.
winexec () {
setopt localoptions extendedglob
local cmd=$1
shift || return
argv=("${@//#\/(#b)([a-zA-Z])\//$match:}")
"$cmd" "$@"
}
> What's the /#?
You're parsing it wrong.
@ The variable to expand
// Replace all occurrences of
#\/(#b)([a-zA-Z])\/ this pattern
/ with
$match: this expansion (see "backreference" below)
> what's (#b)?
The pattern is
# Anchor at beginning
\/ a slash
(#b) activate "backreferences"
([a-zA-Z]) create a backreference to one alphabetic
\/ another slash
The backreference stuff requires extendedglob. It's actually not
useful to use the // for replace-all because there can only be one
match when anchored at the beginning, so just ${@/#.../...} would
have been OK.
(This question really should have been asked on zsh-users.)
prev parent reply other threads:[~2006-02-11 19:20 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-11 17:36 Ligesh
2006-02-11 17:38 ` Stephane Chazelas
2006-02-11 18:21 ` Ligesh
2006-02-11 19:20 ` Bart Schaefer [this message]
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