Re: suppress leading ":" in org-babel output

[Nick Dokos <ndokos@gmail.com>]

"Berry, Charles" <ccberry@ucsd.edu> writes:

>> On May 27, 2019, at 7:17 PM, Nick Dokos <ndokos@gmail.com> wrote:
>> 
>> Jeremie Juste <jeremiejuste@gmail.com> writes:
>> 
>>> Hello,
>>> 
>>> I recall seeing this thread on the mailing list but I cannot find it
>>> back.
>>> 
>>> I would like to suppress the first line leading ":" in the following output
>>> 
>>> 
>>> #+NAME:mean_purchase_per_shopping_trip
>>> 
>>> #+BEGIN_SRC R :var x=6 :results output :session *R*
>>> a <-sprintf("%.2f",12.234324)
>>> cat(a,sep="\n")
>>> #+END_SRC
>>> 
>>> #+RESULTS: mean_purchase_per_shopping_trip
>>> : 
>>> 
>>> : 12.23
>>> 
>> 
>> FWIW, I just get the last line:
>> 
>> #+NAME:mean_purchase_per_shopping_trip
>> 
>> #+BEGIN_SRC R :var x=6 :results output :session *R*
>> a <-sprintf("%.2f",12.234324)
>> cat(a,sep="\n")
>> #+END_SRC
>> 
>> #+RESULTS:
>> : 12.23
>> 
>> This is with 
>> 
>>   GNU Emacs 27.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 2.24.32) of 2019-05-01
>>   Org mode version 9.2.3 (release_9.2.3-367-gd79e80 @ /home/nick/elisp/org-mode/lisp/)
>>   R version 3.5.3 (2019-03-11) -- "Great Truth"
>> 
>> on Fedora 29.
>> 
>
> I get what Jeremie reports (but he has a blank line inserted after the first line, IIUC)
>
> This is with:
>
> GNU Emacs 26.1 
> Org 9.2.3
> ess-version: 18.10.3
> R version 3.6.0 (2019-04-26)
>
> I believe this is new-ish behavior. I see some older files without the
> extra line. Also, I think there are recent changes in ESS that pertain
> to comint sessions.
>
> FWIW, here is a clip from my session:
>
>> x <- 6L
> a <-sprintf("%.2f",12.234324)
> cat(a,sep="\n")
> 'org_babel_R_eoe'
>> > 
> 12.23
>> 
> [1] "org_babel_R_eoe"
>
>
> If Nick sees something different maybe a change in ESS is the culprit.
>

Here's what I see in the session buffer:

,----
| > > if (identical(getOption('pager'), file.path(R.home('bin'), 'pager'))) options(pager='cat') # rather take the ESS one 
| > options(STERM='iESS', str.dendrogram.last="'", editor='emacsclient', show.error.locations=TRUE)
| > x <- 6L
| a <-sprintf("%.2f",12.234324)
| cat(a,sep="\n")
| 'org_babel_R_eoe'
| x <- 6L
| > a <-sprintf("%.2f",12.234324)
| > cat(a,sep="\n")
| 12.23
| > 'org_babel_R_eoe'
| [1] "org_babel_R_eoe"
| > 
`----

-- 
Nick

"There are only two hard problems in computer science: cache
invalidation, naming things, and off-by-one errors." -Martin Fowler