From owner-freebsd-bugs@FreeBSD.ORG  Tue Oct 12 11:55:32 2010
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Date: Tue, 12 Oct 2010 11:55:31 GMT
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Subject: Re: bin/151384: rs(1) damages data
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Synopsis: rs(1) damages data

Responsible-Changed-From-To: freebsd-bugs->uqs
Responsible-Changed-By: uqs
Responsible-Changed-When: Tue Oct 12 11:53:22 UTC 2010
Responsible-Changed-Why: 
I'll have a look at this.

Can you please specify when this broke, ie. for which release did this work?

Also, you may want to use xargs(1) to deal with overly long lines. Your example
works fine like this:
  
  jot -s\  -b 01234567 1000 | xargs -n1 | grep -vxF 01234567


http://www.freebsd.org/cgi/query-pr.cgi?pr=151384