Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!yale!cmcl2!kramden.acf.nyu.edu!brnstnd
From: brnstnd@kramden.acf.nyu.edu (Dan Bernstein)
Newsgroups: comp.lang.perl
Subject: Re: Matching parentheses
Message-ID: <2890:Dec122:35:1290@kramden.acf.nyu.edu>
Date: 1 Dec 90 22:35:12 GMT
References: <12435:Nov3011:26:5990@kramden.acf.nyu.edu> <13858:Nov3016:23:4790@kramden.acf.nyu.edu> <1990Dec1.105725.28029@robobar.co.uk>
Organization: IR
Lines: 13

In article <1990Dec1.105725.28029@robobar.co.uk> ronald@robobar.co.uk (Ronald S H Khoo) writes:
> brnstnd@kramden.acf.nyu.edu (Dan Bernstein) writes:
> > #!/bin/sh
> > ( echo '0'; echo '0'; fold -1 | sed 's,[^()],,
> What's fold ?

A program that wraps its input to a specific line length. fold -1 just
puts a newline after each character.

This is somewhat off the subject, though; I was just illustrating one
way to code the parenthesis-counting technique.

---Dan


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