From: Charles Forsyth <forsyth@terzarima.net>
To: 9fans@9fans.net
Subject: Re: [9fans] non greedy regular expressions
Date: Fri, 24 Oct 2008 23:54:50 +0100 [thread overview]
Message-ID: <e8ce09f02b6789c5fa6114c5ffe4c260@terzarima.net> (raw)
In-Reply-To: <a560a5d00810241504m442ba788u8f9a34218d18576f@mail.gmail.com>
although it can be satisfying to do things in one instruction (one command)
i confess i often find it quicker to split up the problem in sam or acme:
1. delete everything not between delimiters
,y/ABC([^C]|C[^B]|CB[^A]|\n)+CBA/d
2. delete the delimeters
,x/ABC|CBA/d
3. look to decide if i missed a boundary case for my input
it would be easier if the delimiters weren't words, or your sections didn't span lines.
i didn't spend any time deciding whether there was a better way
to express the trailing word delimiter. it's too late.
an example actually using the () [submatch] to extract and exchange two fields on each line:
,x s/([^,]*),(.*)/\2,\1/
next prev parent reply other threads:[~2008-10-24 22:54 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-23 18:58 Rudolf Sykora
2008-10-23 19:05 ` erik quanstrom
2008-10-24 8:08 ` Rudolf Sykora
2008-10-24 12:23 ` erik quanstrom
2008-10-24 16:11 ` Rudolf Sykora
2008-10-24 16:54 ` erik quanstrom
2008-10-24 17:02 ` John Stalker
2008-10-24 17:15 ` Rob Pike
2008-10-24 17:41 ` Rudolf Sykora
2008-10-24 18:01 ` Russ Cox
2008-10-24 19:56 ` Rudolf Sykora
2008-10-24 21:10 ` Russ Cox
2008-10-24 21:40 ` Rudolf Sykora
2008-10-24 21:47 ` erik quanstrom
2008-10-24 22:04 ` Rudolf Sykora
2008-10-24 22:38 ` Gabriel Diaz Lopez de la Llave
2008-10-24 22:54 ` Charles Forsyth [this message]
2008-10-24 22:59 ` Charles Forsyth
2008-10-24 23:52 ` Tom Simons
2008-10-25 22:35 ` Rudolf Sykora
2008-10-25 23:02 ` Steve Simon
2008-10-26 8:57 ` John Stalker
2008-10-26 18:36 ` Eris Discordia
2008-10-27 4:55 ` Russ Cox
2008-10-27 8:28 ` Rudolf Sykora
2008-10-27 10:18 ` Charles Forsyth
2008-10-27 13:13 ` Eris Discordia
2008-10-27 13:23 ` erik quanstrom
2008-10-27 19:42 ` Eris Discordia
2008-10-27 16:13 ` Brian L. Stuart
2008-11-30 8:29 ` Yard Ape
2008-12-11 16:32 ` Rudolf Sykora
2008-10-24 18:02 ` John Stalker
2008-10-24 17:10 ` Uriel
2008-10-24 19:56 ` Charles Forsyth
2008-10-24 19:56 ` Rudolf Sykora
2008-10-26 21:23 ` Rob Pike
2008-10-24 11:27 Aharon Robbins
2008-10-27 19:23 Aharon Robbins
2008-10-27 20:15 ` Eris Discordia
2008-10-27 20:00 Eris Discordia
2008-10-28 14:51 ` Brian L. Stuart
2008-10-28 15:07 ` Eris Discordia
2008-10-27 21:08 Aharon Robbins
2008-10-28 14:53 ` Eris Discordia
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