From: James Edward Gray II <james@...>
Date: 2006-12-12T07:56:17+09:00
Subject: Re: Is there something like Regexp#match_all

On Dec 11, 2006, at 4:50 PM, Andi Schacke wrote:

> Robert Klemme wrote:
>> On 11.12.2006 22:26, Andi Schacke wrote:
>>> is there a possibility to return all the matches of a regexp? or in
>>> other words is there a way to apply a block to all matches at once?
>>> Something like String#gsub but where I can specifiy what to do  
>>> with the
>>> matches...
>>
>> What exactly do you want to do with matches?
>>
>>   robert
>
> I'd like to build a small web-tool for myself to highlight all the
> matches of a regexp against a specified string (e.g. the matches  
> should
> be in a different color). But I think I found a solution:
>
> source_string.gsub(regexp) {|match| "<span
> style=\"color:red;\">#{match}</span>"}

You don't really need the block form for such a simple replacement.   
This is the same thing:

source_string.gsub(regexp, '<span color="red">\&</span>')

James Edward Gray II