From: Logan Capaldo <logancapaldo@...>
Date: 2006-02-08T04:13:50+09:00
Subject: Re: Grep via Ruby


On Feb 7, 2006, at 9:30 AM, James Edward Gray II wrote:

> On Feb 7, 2006, at 7:08 AM, ralf wrote:
>
>> I'd like to have a "grep" with case-insensitive match.
>
> You can turn options on/off inside a pattern.  For example, here is  
> a pattern that matches the word file, regardless of case:
>
>   (?i:file)
>
>> Maybe this can be done a lot easier by using ARGF??
>
> Yes it can.  Your input loop can be replaced with:
>
>   ARGF.grep(pattern) do |line|
>     puts "#{ARGF.filename} #{ARGF.lineno}: #{line}"
>   end
>
> Hope that helps.
>
> James Edward Gray II
>
>

Minor suggestion, line is going to end in an nl anyway. I would use  
print, unless you want all that extra whitespace in the output.