From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] How to do this with [acme | sam | sed ] ?
Date: Fri, 11 Jan 2013 09:24:05 -0500 [thread overview]
Message-ID: <b628c3fe860d2900eaac0867c4f50f91@brasstown.quanstro.net> (raw)
In-Reply-To: <CAOEdRO14t_zLS5Z9pQ7LQUA+kya8DADUDmsgCCukx_sMGtB6Dg@mail.gmail.com>
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> # remove outermost pair of braces: abcd(x+(y-z))efgh --> abcdx+(y-z)efgh
> [ no idea :-( ]
this is made simple since * is "greedy":
Edit s:\((.*)\):\1:g
On Fri Jan 11 06:45:39 EST 2013, rudolf.sykora@gmail.com wrote:
> On 11 January 2013 12:19, Peter A. Cejchan <tyapca7@gmail.com> wrote:
> > # remove outermost pair of braces: abcd(x+(y-z))efgh --> abcdx+(y-z)efgh
>
> This, I believe, can't be achieved only with regexps. I'd write a
> small external program and use it as a filter.
>
> > # prefix to postfix operator: ++i --> i++
> > [ Edit s/\+\+[a-zA-Z]+[0-9a-zA-Z]*/&++/ Edit s/\+\+/d]
>
> using the \1 (used to be undocumented on plan9) may be sometimes easier
> Edit s/\+\+([A-Za-z]+[A-Za-z0-9])*/\1++/
should be "Edit s/\+\+([A-Za-z]+[A-Za-z0-9]*)/\1++/"
ideally one should include _ and ¡-￿.
- erik
next prev parent reply other threads:[~2013-01-11 14:24 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-11 11:19 Peter A. Cejchan
2013-01-11 11:44 ` Rudolf Sykora
2013-01-11 12:24 ` Peter A. Cejchan
2013-01-11 12:27 ` dexen deVries
2013-01-11 12:38 ` Bence Fábián
2013-01-11 14:24 ` erik quanstrom [this message]
2013-01-11 15:16 ` Rudolf Sykora
2013-01-11 11:46 ` Bence Fábián
2013-01-11 12:07 ` Peter A. Cejchan
2013-01-11 12:09 ` Nicolas Bercher
2013-01-11 13:10 ` Peter A. Cejchan
2013-01-11 13:24 ` Nicolas Bercher
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