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Re: --only-match
From: |
Daiki Ueno |
Subject: |
Re: --only-match |
Date: |
10 May 2001 18:07:12 +0900 |
User-agent: |
T-gnus/6.15.3 (based on Oort Gnus v0.03) |
>>>>> In <address@hidden>
>>>>> Miles Bader <address@hidden> wrote:
> Daiki Ueno <address@hidden> writes:
> > > My english writing skills are flaky but "--only-match" does not
> > > sound right. Sorry I do not have any better alternative.
> >
> > Okay, how about "--matching-string"?
> I think that's worse, in the sense that the option name gives me no good
> sense what it actually does. I don't think the extra verbosity of
> `matching string' over `match' is useful.
> I like Paul's suggestion, although some people might think it's odd to
> use the --context option for such a special case.
I've heard that the perl script mg (stands for "multiline grep") has
similar option -c0, for example:
$ cat test.txt
aaatestaaatestbbb
abatestbaa
$ mg -c0 -E '[abc]+' test.txt
aaa
aaa
bbb
aba
baa
(Mg is available from ftp://ftp.iij.ad.jp/pub/IIJ/dist/utashiro/perl/)
I'm not well aware of uses of --context, but --context=0 is still
useful? In current implementation of context control, it seems hard to
change the semantics of the context control options -C, -A, -B, because
the commonly used function context_length_arg only accepts a positive
integer.
Regards,
--
Daiki Ueno