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From: Vagn Johansen <gonz808@hotmail.com>
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Subject: Re: Perldo in Emacs
Date: Thu, 03 Mar 2011 19:32:19 +0100
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Yuri Khan <yurivkhan@gmail.com> writes:

> 2011/3/3 Alberto Simões <hashashin@gmail.com>:
>
>> It is a matter of running the buffer with
>>
>>  perl -i -pe ' ... '    < buffer > newbuffer
>>
>> where ... is the perl code instroduced by the user in emacs
>> (minibuffer, probably).
>
> shell-command-on-region will almost do what you want, you will just
> need to pass it a newly created buffer for output.
>

Type C-u first

 C-u M-| ..

-- 
Vagn Johansen