Re: Re: org-babel: interactive terminal support

From: Dan Davison <davison@stats.ox.ac.uk>
To: Benjamin Andresen <benny@in-ulm.de>
Cc: emacs-orgmode@gnu.org
Subject: Re: Re: org-babel: interactive terminal support
Date: Mon, 28 Sep 2009 15:55:04 -0400	[thread overview]
Message-ID: <87tyym9753.fsf@stats.ox.ac.uk> (raw)
In-Reply-To: <873a6aob6z.fsf@in-ulm.de> (Benjamin Andresen's message of "Sat, 26 Sep 2009 01:29:24 +0200")

Benjamin Andresen <benny@in-ulm.de> writes:

> Hey Dan,
>
> Dan Davison <davison@stats.ox.ac.uk> writes:
>
>> Hi Benny,
>>
>> This looks very interesting and I think it's extremely likely that we'll
>> want to include your code -- thanks very much. Having said that, I'm
>> being a bit dense: would you mind expanding a bit on what this currently
>> does, and what it has the potential to do?
>
> All it currently does it show you a terminal which gets the source
> code block send to. Just like an inferior process.

Hi Benny,

Thanks a lot for that, it looks really promising. Do you want to create
a branch in a publicly accessible org-mode repo containing your
additions?  I've created an org mode fork for org-babel development at

git://repo.or.cz/org-mode/babel.git

webpage

http://repo.or.cz/w/org-mode/babel.git

which you could use (I'll send you the admin password offline so you can
give yourself push rights).

Dan

>
> I've made a gif of the channels.org example from my first mail:
> http://github.com/bandresen/org-babel-screen/blob/master/channels.anim.gif
>
> The way I currently see it, it somehow works as an interactive makefile.
>
> An example of a use that I have is that want to extract several frames
> out of a video file and convert them to a gif animation.
>
> It's a commented org file with several steps such as:
>
> * find the part you want to extract
> #+begin_src screen :session create-gif
>   mplayer -ao null -osdlevel 3 /tmp/videofile.avi 
> #+end_src
> [...snip...]
> * convert selected frames to gif
> #+begin_src screen :session create-gif
>   convert -delay 100 -loop 0 .qiv-select/* animation.gif
> #+end_src
>
> I don't know how useful it is to other people, but because it basically
> gives you the power over a terminal emulator you could do anything in it
> that you can do in a normal terminal. Except better controlled and
> documented.
>
> Or one could use a standardized notation for keypresses and let screen
> translate them for you. Example:
>
> #+begin_src screen :session vimtutorial
>   vimtutor
>   85G
>   fcx
>   EEx
>   llx
>   ^Vjjjjlllx
> #+end_src
>
> Which might be useful in some way.
>
> Another thing that might be possible is to simulate an 'expect' like
> behavior by using screen's capability to dump the output of commands.
> It's certainly possible, but replacing an app like 'expect' is no small
> task. :-)

>
> br,
> benny
>
>
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