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From: "Berry, Charles" via "General discussions about Org-mode." <emacs-orgmode@gnu.org>
To: Brett Presnell <presnell@member.fsf.org>
Cc: "emacs-orgmode@gnu.org" <emacs-orgmode@gnu.org>
Subject: Re: na=\"nil\" in ob-R.elo
Date: Sat, 16 Jan 2021 00:19:05 +0000	[thread overview]
Message-ID: <97F6B6F8-E109-4089-8C21-03E087AA4AD3@health.ucsd.edu> (raw)
In-Reply-To: <87h7njdr0x.fsf@ufl.edu>

> On Jan 14, 2021, at 3:42 PM, Brett Presnell <presnell@member.fsf.org> wrote:
> Probably a silly question, but in ob-R.el, what is the reason for
> setting na=\"nil\" when defining org-babel-R-write-object-command?  Is
> this an elisp compatibility thing?

I don't get it either. The value corresponding to the NA becomes a string in emacs-lisp whether \"nil\" or \"\" is used.

So when passed to elisp via a :post header referencing an emacs-lisp src block, its treated as a string.   

> Regardless, I generally (always?) want na=\"\" for this, so I am finding
> all those "nil"s very annoying, and the only way that I see to defeat
> them is to redefine org-babel-R-write-object-command.
> If there is no reason for the current behavior (doubtful I know) and if
> I am not missing an obvious work-around, then I would like to suggest
> changing this behavior.  Otherwise, would it be feasible to add an
> option for R code blocks (:nastring?) where one could specify the NA
> replacement string?
> What do you think?  It's easy to suggest I know and certainly beyond my
> elisp coding skills at present, but I am supposing that someone more
> fluent in elisp could do this safely without too much trouble.

You can use a :post header to customize outputs like this to make them more pleasing. Or just use your own `org-babel-R-write-object-command'.

Adding another header arg qualifies as feature creep and in this case would require non-trivial work to implement.



  reply	other threads:[~2021-01-16  0:20 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-14 23:42 Brett Presnell
2021-01-16  0:19 ` Berry, Charles via General discussions about Org-mode. [this message]
2021-01-16 13:35   ` Jeremie Juste
2021-01-17 21:48     ` Brett Presnell
2021-02-06 20:05   ` Jeremie Juste

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