deleting some empty lines with sed

[Dave Hammond]

In article <1991Apr27.143519.26256 at daimi.aau.dk> datpete at daimi.aau.dk (Peter Andersen) writes:
>I have some source-files that I produce documentation from.
>
>I use sed to make a few changes to the text. I have figured
>most of it out, but I have one problem remaining:
>If two or more blank lines appear, I want to remove all but
>one of these.
>[sed example deleted]
>Does anyone have a way of doing this, perhaps using something
>else but sed. I'm not a perl-guru, but if its possible in perl
>I'd like to hear about that too.

Perhaps I'm oversimplifying the problem, but wouldn't

tr -s '\012'

squeeze multiple, consecutive newlines to a single newline?

--
Dave Hammond
daveh at marob.uucp
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