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From: "Charles C. Berry" <ccberry@ucsd.edu>
To: Andreas Kiermeier <andreas.kiermeier@gmail.com>
Cc: emacs-orgmode@gnu.org
Subject: Re: R code block produces only partial output
Date: Tue, 5 Aug 2014 19:21:44 -0700	[thread overview]
Message-ID: <alpine.OSX.2.00.1408051840070.1184@charles-berrys-macbook.local> (raw)
In-Reply-To: <CAN7vk5S_MdyEnbJKhA0vzsqmhkVPUU38VYs6YBRyFm_Xpjte6A@mail.gmail.com>

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On Tue, 5 Aug 2014, Andreas Kiermeier wrote:

> ​
> On 6 August 2014 03:35, Charles Berry <ccberry@ucsd.edu> wrote:
> ​[snip]​
>
>> org-babel-R-evaluate-session uses
>>
>>  (string-match "^\\([ ]*[>+\\.][ ]?\\)+\\([[0-9]+\\|[ ]\\)" line)
>>
>> to find the start of R output in the session.
>>
[snip]

> ​
> Thanks Charles for finding this.
>
> I do use R quite a bit, and I can only think of ">
> ​ ​
> " (at beginning of the line) as the command prompt, along with "+
> ​ ​
> " (at beginning of the line) as a continuation prompt for multi-line
> commands. I don't know what
> ​ ​
> "\" or
> ​ ​
> "." provide
> ​ (I don't think this has changed over the various R versions)​
>
> ​.
>
> ​A ​
> complication might be that the user can change the command prompt (and
> continuation prompt) to something else they like (
> ​see here: ​
> http://cran.r-project.org/doc/manuals/r-release/R-intro.html#Customizing-the-environment
> ​)​.
>
> ​For the time being I've taken the "\\." out of my local version of ob-R.el
> (then byte compiled and loaded) and it seems to work fine.
>
> ​Maybe this is a question for the ESS developers who use R extensively and
> probably might be able to provide some more definitive guidance on this
> than I can?


Here is the docstring from ESS's inferior-S-prompt:

inferior-S-prompt is a variable defined in `ess-custom.el'.
Its value is "[]a-zA-Z0-9.[]*\\([>+.] \\)*> "

Documentation:
Regexp used in S and R inferior and transcript buffers for prompt 
navigation.
Customise it to make `comint-previous-prompt' quiqly navigate to
interesting portions of the buffer.


You can customize this variable.

----

Note that there is a space *required* after the [>+.], but the hard coded 
regex in `org-babel-R-evaluate-session' lets the space be optional.

I am guessing the a-zA-Z stuff is there to strip 'Browse[1]> ' prompts and 
such, which probably isn't an issue for babel.

Just before the defcustom for inferior-S-prompt, I see this comment
in ess-custom.el:

;; need to recognise  + + + > > >
;; and "+ . + " in tracebug prompt

Ha! The '.' seems to be for ess-tracebug. I am guessing that nobody will 
need to output tracebug sessions from babel. So maybe it is safe to delete 
the "." after all - or at least require the space after it.

Maybe the regex should be put in a defcustom.

p.s. There is also `inferior-ess-prompt' which on my system is the same as 
inferior-S-prompt (in an R buffer - its buffer local)



HTH,

Chuck

  reply	other threads:[~2014-08-06  2:21 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-04 11:18 R code block produces only partial output Andreas Kiermeier
2014-08-04 11:53 ` Eric Schulte
2014-08-04 12:23   ` Andreas Kiermeier
2014-08-04 13:10     ` Eric Schulte
2014-08-05  0:46       ` Andreas Kiermeier
2014-08-05  4:00         ` John Hendy
2014-08-05  4:31           ` Andreas Kiermeier
2014-08-05 18:05       ` Charles Berry
2014-08-05 19:02         ` Eric Schulte
2014-08-05 19:11           ` John Hendy
2014-08-05 19:57             ` Nick Dokos
2014-08-05 20:10               ` Nick Dokos
2014-08-05 22:21             ` Charles C. Berry
2014-08-06  3:32           ` Aaron Ecay
2014-08-06 11:30             ` Eric Schulte
2014-08-07  6:00               ` Aaron Ecay
2014-08-07 17:42                 ` Charles C. Berry
2014-08-07 18:06                   ` Aaron Ecay
2014-08-07 18:42                     ` Charles C. Berry
2014-08-07 19:06                       ` Thomas S. Dye
2014-08-09  8:54                       ` Rainer M Krug
2014-08-16  5:05                     ` Aaron Ecay
2014-08-16 18:50                       ` Charles C. Berry
2014-08-16 20:58                         ` Aaron Ecay
2014-08-17  6:03                           ` Achim Gratz
2014-08-19  0:13                             ` Aaron Ecay
2014-08-19  5:36                               ` Achim Gratz
2014-08-23  8:32                                 ` Aaron Ecay
2014-08-23  9:24                                   ` Andreas Kiermeier
2014-08-23 17:10                                   ` Aaron Ecay
2014-08-23 18:35                                   ` Thomas S. Dye
2014-08-23 19:37                                     ` Ista Zahn
2014-08-24  0:10                           ` Charles C. Berry
2014-08-28  5:24                             ` Aaron Ecay
2014-09-01  5:00                               ` Aaron Ecay
2014-09-01 16:08                                 ` Charles C. Berry
2014-08-09  8:48                   ` Rainer M Krug
2014-08-06  1:11         ` Andreas Kiermeier
2014-08-06  2:21           ` Charles C. Berry [this message]
2014-08-06  3:24             ` Aaron Ecay
2014-08-06 15:59               ` Charles C. Berry

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