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devel / comp.lang.perl.misc / Re: bal() (was Re: regex)

SubjectAuthor
* bal() (was Re: regex)Otto J. Makela
`- Re: bal() (was Re: regex)Jim Gibson

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bal() (was Re: regex)

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From: om...@iki.fi (Otto J. Makela)
Newsgroups: comp.lang.perl.misc
Subject: bal() (was Re: regex)
Date: Tue, 04 May 2021 15:10:36 +0300
Organization: Games and Theory
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 by: Otto J. Makela - Tue, 4 May 2021 12:10 UTC

It would be nice to have bal() which was a pattern matching primitive
which matched balanced quote-like separators (including ones where you
had different left and right quotes, eg () or []). This was a standard
primitive in languages like Snobol4 and Icon, where the pattern matching
wasn't regex-derived.

Of course making an ersatz version in regex isn't impossible:

https://www.andrewzammit.com/blog/regexp-matching-balanced-parenthesis-and-quotes-greedy-non-recursive/
--
/* * * Otto J. Makela <om@iki.fi> * * * * * * * * * */
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Re: bal() (was Re: regex)

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From: jimsgib...@gmail.com (Jim Gibson)
Newsgroups: comp.lang.perl.misc
Subject: Re: bal() (was Re: regex)
Date: 5 May 2021 05:37:02 GMT
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 by: Jim Gibson - Wed, 5 May 2021 05:37 UTC

On May 4, 2021 at 5:10:36 AM PDT, "Otto J. Makela" <Otto J. Makela> wrote:

> It would be nice to have bal() which was a pattern matching primitive
> which matched balanced quote-like separators (including ones where you
> had different left and right quotes, eg () or []). This was a standard
> primitive in languages like Snobol4 and Icon, where the pattern matching
> wasn't regex-derived.
>
> Of course making an ersatz version in regex isn't impossible:
>
>
> https://www.andrewzammit.com/blog/regexp-matching-balanced-parenthesis-and-quotes-greedy-non-recursive/

There is a module for that:

https://metacpan.org/pod/Text::Balanced

--
Jim Gibson

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