Surprising Regexp Behavior

ruby-talk
1

Also see http://www.zenspider.com/Languages/Ruby/QuickRef.html#10

Thank Ryan Davis. :slight_smile:

Regards,

Dan

···

-----Original Message-----
From: Ara.T.Howard [mailto:Ara.T.Howard@noaa.gov]
Sent: Tuesday, September 13, 2005 12:53 PM
To: ruby-talk ML
Subject: Re: Surprising Regexp Behavior

On Wed, 14 Sep 2005, James Edward Gray II wrote:

> On Sep 13, 2005, at 1:46 PM, Berger, Daniel wrote:
>
>> In the former, sub != gsub. In the latter, you need
multi-line mode
>> because of the "\n\n":
>>
>> # Without /m
>> irb(main):026:0> html =~ /<p>(.*?)<\/p>(.*)/
>> => 0
>> irb(main):027:0> $1
>> => "one"
>> irb(main):028:0> $2
>> => ""
>>
>> # With /m
>> irb(main):023:0> html =~ /<p>(.*?)<\/p>(.*)/m
>> => 0
>> irb(main):024:0> $1
>> => "one"
>> irb(main):025:0> $2
>> => "\n\n<p>two</p>"
>
> Yep, that's what I was forgetting. Thanks for the lesson.

thank dave thomas - the pickaxe (html version I) is always
open in my browser
- but far the most oft used page is the one on regex syntax.
it just happend to be open :wink: