From: Robert Klemme <shortcutter@...>
Date: 2012-08-29T16:35:28+09:00
Subject: Re: Regex Non Greedy Match

On Wed, Aug 29, 2012 at 3:48 AM, Regis d'Aubarede <lists@ruby-forum.com> wrote:
>> re = /@\[Subject:\d+\|(.*)\]/
>
> try :
> re = /@\[Subject:\d+\|(.*?)\]/
>
> test :
> str2.scan re
> => [["My_Subject"], ["Your_Subject"]]

In this case we can also use a character class which excludes closing
square bracket:

irb(main):004:0> [str1,str2].each {|s| printf "%s -> %p\n", s,
s.scan(/\[Subject:\d+\|([^\]]*)\]/)}
Hi, @[Subject:13|My_Subject] -> [["My_Subject"]]
Hi, @[Subject:13|My_Subject], and @[Subject:45|Your_Subject] ->
[["My_Subject"], ["Your_Subject"]]

irb(main):005:0> [str1,str2].each {|s| printf "%s -> %p\n", s,
s.scan(/\[Subject:\d+\|([^\]]*)\]/).flatten}
Hi, @[Subject:13|My_Subject] -> ["My_Subject"]
Hi, @[Subject:13|My_Subject], and @[Subject:45|Your_Subject] ->
["My_Subject", "Your_Subject"]

Kind regards

robert

-- 
remember.guy do |as, often| as.you_can - without end
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