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Re: [perl #119095] Empty regular expression does not match in somecases

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Aristotle Pagaltzis
August 6, 2013 06:41
Re: [perl #119095] Empty regular expression does not match in somecases
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* Aaron Crane <> [2013-08-05 20:10]:
> Aristotle Pagaltzis <> wrote:
> > And even when I say all this, I am almost certainly being
> > ahistorical – I do not know in detail the lineage and history of ed
> > and all its next of kin (ex/vi, grep, sed, patch etc) and would
> > actually be surprised if the story weren’t more intertwined and
> > complex than my portrayal, even WRT just this one aspect.
> >
> > (I expect Aaron to come up behind me and embarrass me now. :-) )
> Nope, your summary pretty much covers it. :-)

Wow, there’s an actual straightforward corner within Unix history. :-)

> So this aspect of Perl can be dated back to code written no later than
> 1970, for a text editor running on an operating system that I suspect
> noone subscribed to this list has ever used.

Which, to be explicit, means it predates Perl (1.0 in 1987) by nearly
two decades. Not bad…

> Enjoy!

I did, thank you.  :-)   I hadn’t heard of em! Nor qed, of course, but
I wouldn’t have expected to anyway. And d’oh, it was diff that I meant
to mention, not patch (though patch too).

Aristotle Pagaltzis // <>

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