RE: sed/vi how to concatenate all non-empty lines?

[OZAWA -Crouton- Sakuro <crouton@example.com>]

At Wed, 25 Jul 2001 08:28:04 +0000,
Jean-Christian Imbeault wrote:

> col and the script you provided work fined, except that it removed all blank 
> lines :) I was hoping to keep the blank lines as they separated the 
> paragraphs from each other . . .

$ cat -s text.txt | sed -f join.sed | sed -n 'p;g;p'

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