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From: Stefan Monnier <monnier@iro.umontreal.ca>
Newsgroups: gmane.emacs.help
Subject: Re: terminal-emulator breaking functions?
Date: Mon, 18 Jul 2011 00:13:56 -0400
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>> `terminal-emulator' is a very round-about way to run a program, unless
>> you really want the program's output to be displayed according to the
>> rules of a terminal (i.e. interpreting the various escape code for
>> cursor motion and things like that).  Otherwise, you'll want things like
>> call-process, start-process, and shell-command.

> The problem lies in not being able to pipe the contents of a buffer to
> an external program.  How do I do that?

Take a look at process-send-region and process-send-string.


        Stefan