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Date: Tue,  5 Jul 2011 16:01:23 +0200
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From: Rudolf Sykora <rudolf.sykora@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
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Subject: Re: [9fans] grep (or perhaps regex(6)) question
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> there should be no match to the re $junk.
> it's impossible for there to be text after then
> end of line.

1) from the regexp grammer, $junk is a valid regexp
2) grep checks input line-by-line
3) the answer to a question whether a *line* complies with '$whatever'
is --- I believe --- undefined. (It definitely should match '$';
however comparing with '$whatever' gets us outside the definitions).

Ruda