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From: lewis@tramp.Colorado.EDU (LEWIS WILLIAM M JR)
Newsgroups: comp.editors
Subject: Re: VI question
Message-ID: <1991Apr17.175446.20190@colorado.edu>
Date: 17 Apr 91 17:54:46 GMT
References: <1991Apr16.234809.23553@massey.ac.nz>
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In article <1991Apr16.234809.23553@massey.ac.nz> R.Singh@massey.ac.nz (R. Singh) writes:
>Get VI to recognize a pattern of two 4 lettered uppercase words and insert
>a comma in them
>
>for eg
>
>XHLP XCEL
>APPL XCEL
>
>and make them
>
>XHLP,XCEL
>APPL,XCEL
>
Examples abbreviated.  Instead of vi, use any AT&T version of 'ed' later
than V7:

	g/[A-Z]\{4\} [A-Z]\{4\}/s/ /,/g

If you don't know about \{n,m\} closures, see McGilton and Morgan "Introducing
the Unix System" and if the version of 'ed' that came with your UNIX system
doesn't support closures, get the real thing.