From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rafael <rvf0068@gmail.com>
Subject: Re: Hang on incomplete input
Date: Wed, 30 Nov 2011 17:12:23 -0600
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References: <21A5E1E970CD46459ECBE86D6CC4B28C52E23B34@spexch01.WindLogics.local>
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	(Ken Williams's message of "Wed, 30 Nov 2011 16:41:50 -0600")
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To: Ken Williams <Ken.Williams@windlogics.com>
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Ken Williams <Ken.Williams@windlogics.com> writes:

> Apparently, org-mode Babel (or maybe Emacs, or ESS) will hang when
> given incomplete input, like the following:
>
> #+begin_src R
> ddply(x,
> #+end_src
>
> I was just tearing my hair out trying to figure out why my code was
> hanging, because of course it's much longer and I didn't notice the
> missing paren.
>
> Is this replicable on other people's platforms too?  I'm using GNU
> Emacs on Windows, with org-mode 7.7 and ESS 5.14.
>
> There are other situations where I really wish org-mode (or Emacs, or
> ESS) didn't freeze up while evaluating R code - for example if I
> accidentally did 'debug()' on a function that's now being called, or
> even just on long-running calculations.  Any chance evaluation could
> be done in a separate thread or something?

In Ubuntu 10.10, emacs 23.2 and recent org, I get an *Org-Babel Error
Output* buffer, saying:

Error: unexpected '}' in:
"ddply(x,
}"
Execution halted