Esteemed Monks,

In my searches of regexp and Perl, I am not finding the answer to this-- is it possible to flip the order of lines based on their matching a given pattern? What I have in mind is this-- you have a file with the follwing contents: 

1. text'1'
2. text'2'
3. text'3'
...

[download]

With sed, you could reverse the order of the lines thus:

/'1'/{ 
h      
d      
}      
/'2'/G 
/'2'/{ 
h      
d      
}      
/'3'/G 
/'3'/{ 
h      
d      
}

[download]

and end up with the file

3.text'3'
2.text'2'
1.text'1'

[download]

Is there a similar capability with Perl? I was working earlier today on making a program interactive with vi (see my earlier question), and this is a similar thing-- I need it to do this within a "while" construction and spit out all the lines back into the file I'm editing when I'm done. Can this be done?

Thanks.

In reply to Sed to perl conversion-- flipping lines in a file by NovMonk

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