From: "Hal E. Fulton" <hal9000@...>
Date: 2003-07-10T14:31:07+09:00
Subject: Re: Ruby T-Shirt Idea

----- Original Message ----- 
From: "Daniel Carrera" <dcarrera@math.umd.edu>
To: "ruby-talk ML" <ruby-talk@ruby-lang.org>
Sent: Thursday, July 10, 2003 12:27 AM
Subject: Re: Ruby T-Shirt Idea


> I just thought of a dead give-away:
> 
> dcarrera ~ $ cat myfile 
> cat
> dog
> horse
> zebra
> tiger
> dcarrera ~ $ grep a myfile 
> cat
> zebra
> dcarrera ~ $ ruby -e 'puts ARGF.grep(/a/)' myfile
> cat
> zebra

Quite right.

The part I can't remember was one of those
"implicit loop" things that I never use...

BTW, var = Regexp.new(Regexp.escape(var)) will
also do that conversion... probably more than
two ways... ;)

As for interpolating a variable into a regex,
I'm not sure whether it does automatic escaping
or not. I'd like to think it does, but there 
may be some good reason it doesn't. Too lazy to
test right now...

Hal

--
Hal Fulton
hal9000@hypermetrics.com