From: Vin Shelton <acs@alumni.princeton.edu>
To: Mark van Dijk <lists+zsh@internecto.net>
Cc: "zsh-users@zsh.org" <zsh-users@zsh.org>
Subject: Re: Regular expression expanding and matching
Date: Sun, 25 Nov 2012 13:30:45 -0500 [thread overview]
Message-ID: <CACeGjnWHP4pYSbjRrvZGCpd8tOCEpuYaTODZ1=LiZuJO5tNTuw@mail.gmail.com> (raw)
In-Reply-To: <50B23D2D.9060603@internecto.net>
On Sun, Nov 25, 2012 at 10:45 AM, Mark van Dijk
<lists+zsh@internecto.net> wrote:
> Apparently there is no expansion of ${todaysday} and ${yesterday}.
> This is not really surprising because in regular expressions many
> characters have a different meaning.
>So what's the proper way to achieve this type of expression matching?
Enclosing the expressions in double quotes seems to work for me:
if [[ $somestring -pcre-match "\d{4}${todaysday}" ]]; then
echo "somestring matches today"
elif [[ $somestring -pcre-match "\d{4}${yesterday}" ]]; then
echo "somestring matches yesterday"
fi
+./tt:8> [[ $somestring -pcre-match "\d{4}${todaysday}" ]]
+./tt:9> echo 'somestring matches today'
somestring matches today
Regards,
Vin
next prev parent reply other threads:[~2012-11-25 18:36 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-25 15:45 Mark van Dijk
2012-11-25 18:30 ` Vin Shelton [this message]
2012-11-25 19:09 ` Mark van Dijk
2012-11-25 18:57 ` Peter Stephenson
2012-11-25 19:18 ` Vin Shelton
2012-11-25 19:30 ` Bart Schaefer
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