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From: brad@SSD.CSD.HARRIS.COM (Brad Appleton)
Newsgroups: comp.sources.wanted
Subject: Re: Another kind of diff output
Keywords: weird diff software toy
Message-ID: <3335@hcx1.SSD.CSD.HARRIS.COM>
Date: 19 Mar 90 19:11:31 GMT
References: <24897@ut-emx.UUCP> <2467@infinet.UUCP>
Sender: news@hcx1.SSD.CSD.HARRIS.COM
Distribution: usa
Organization: Harris Computer Systems, Fort Lauderdale, FL
Lines: 29

In article <2467@infinet.UUCP> sena@infinet.UUCP (Fred Sena) writes:
>I have a weird request.  Does anyone have a program which can compare two
>files and produce as output one of the input files with the changes added and
>highlighted.  Diff just shows the changes between two files, without the
>similar text.
>
>
>I want the program to compare source code versions to see what changes were
>made to the code.  I suppose it could also be used to compare text files.  In
>fact, I think that it would be useful for showing revisions of documents.
>

Look at "sdiff" and "diffmk" if they are on your system.

sdiff will compare two files sise-by-side (2up) marking lines in one 
file but not the other with '<' or '>' and marking changed lines with '|'

diffmk will produce a third file from the first two which contains 
change marks (formatted for nroff or troff)

PS -- If you have access to a Silicon Graphics machine ...
their "gdiff" is by far the best diff I have encountered.

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